| 1 | /* simulator.c -- Interface for the AArch64 simulator. |
| 2 | |
| 3 | Copyright (C) 2015-2016 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Red Hat. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "config.h" |
| 23 | #include <stdlib.h> |
| 24 | #include <stdio.h> |
| 25 | #include <string.h> |
| 26 | #include <sys/types.h> |
| 27 | #include <math.h> |
| 28 | #include <time.h> |
| 29 | #include <limits.h> |
| 30 | |
| 31 | #include "simulator.h" |
| 32 | #include "cpustate.h" |
| 33 | #include "memory.h" |
| 34 | |
| 35 | #define NO_SP 0 |
| 36 | #define SP_OK 1 |
| 37 | |
| 38 | #define TST(_flag) (aarch64_test_CPSR_bit (cpu, _flag)) |
| 39 | #define IS_SET(_X) (TST (( _X )) ? 1 : 0) |
| 40 | #define IS_CLEAR(_X) (TST (( _X )) ? 0 : 1) |
| 41 | |
| 42 | /* Space saver macro. */ |
| 43 | #define INSTR(HIGH, LOW) uimm (aarch64_get_instr (cpu), (HIGH), (LOW)) |
| 44 | |
| 45 | #define HALT_UNALLOC \ |
| 46 | do \ |
| 47 | { \ |
| 48 | TRACE_DISASM (cpu, aarch64_get_PC (cpu)); \ |
| 49 | TRACE_INSN (cpu, \ |
| 50 | "Unallocated instruction detected at sim line %d," \ |
| 51 | " exe addr %" PRIx64, \ |
| 52 | __LINE__, aarch64_get_PC (cpu)); \ |
| 53 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),\ |
| 54 | sim_stopped, SIM_SIGILL); \ |
| 55 | } \ |
| 56 | while (0) |
| 57 | |
| 58 | #define HALT_NYI \ |
| 59 | do \ |
| 60 | { \ |
| 61 | TRACE_DISASM (cpu, aarch64_get_PC (cpu)); \ |
| 62 | TRACE_INSN (cpu, \ |
| 63 | "Unimplemented instruction detected at sim line %d," \ |
| 64 | " exe addr %" PRIx64, \ |
| 65 | __LINE__, aarch64_get_PC (cpu)); \ |
| 66 | if (! TRACE_ANY_P (cpu)) \ |
| 67 | { \ |
| 68 | sim_io_eprintf (CPU_STATE (cpu), "SIM Error: Unimplemented instruction: "); \ |
| 69 | trace_disasm (CPU_STATE (cpu), cpu, aarch64_get_PC (cpu)); \ |
| 70 | } \ |
| 71 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu),\ |
| 72 | sim_stopped, SIM_SIGABRT); \ |
| 73 | } \ |
| 74 | while (0) |
| 75 | |
| 76 | #define NYI_assert(HI, LO, EXPECTED) \ |
| 77 | do \ |
| 78 | { \ |
| 79 | if (INSTR ((HI), (LO)) != (EXPECTED)) \ |
| 80 | HALT_NYI; \ |
| 81 | } \ |
| 82 | while (0) |
| 83 | |
| 84 | /* Helper functions used by expandLogicalImmediate. */ |
| 85 | |
| 86 | /* for i = 1, ... N result<i-1> = 1 other bits are zero */ |
| 87 | static inline uint64_t |
| 88 | ones (int N) |
| 89 | { |
| 90 | return (N == 64 ? (uint64_t)-1UL : ((1UL << N) - 1)); |
| 91 | } |
| 92 | |
| 93 | /* result<0> to val<N> */ |
| 94 | static inline uint64_t |
| 95 | pickbit (uint64_t val, int N) |
| 96 | { |
| 97 | return pickbits64 (val, N, N); |
| 98 | } |
| 99 | |
| 100 | static uint64_t |
| 101 | expand_logical_immediate (uint32_t S, uint32_t R, uint32_t N) |
| 102 | { |
| 103 | uint64_t mask; |
| 104 | uint64_t imm; |
| 105 | unsigned simd_size; |
| 106 | |
| 107 | /* The immediate value is S+1 bits to 1, left rotated by SIMDsize - R |
| 108 | (in other words, right rotated by R), then replicated. */ |
| 109 | if (N != 0) |
| 110 | { |
| 111 | simd_size = 64; |
| 112 | mask = 0xffffffffffffffffull; |
| 113 | } |
| 114 | else |
| 115 | { |
| 116 | switch (S) |
| 117 | { |
| 118 | case 0x00 ... 0x1f: /* 0xxxxx */ simd_size = 32; break; |
| 119 | case 0x20 ... 0x2f: /* 10xxxx */ simd_size = 16; S &= 0xf; break; |
| 120 | case 0x30 ... 0x37: /* 110xxx */ simd_size = 8; S &= 0x7; break; |
| 121 | case 0x38 ... 0x3b: /* 1110xx */ simd_size = 4; S &= 0x3; break; |
| 122 | case 0x3c ... 0x3d: /* 11110x */ simd_size = 2; S &= 0x1; break; |
| 123 | default: return 0; |
| 124 | } |
| 125 | mask = (1ull << simd_size) - 1; |
| 126 | /* Top bits are IGNORED. */ |
| 127 | R &= simd_size - 1; |
| 128 | } |
| 129 | |
| 130 | /* NOTE: if S = simd_size - 1 we get 0xf..f which is rejected. */ |
| 131 | if (S == simd_size - 1) |
| 132 | return 0; |
| 133 | |
| 134 | /* S+1 consecutive bits to 1. */ |
| 135 | /* NOTE: S can't be 63 due to detection above. */ |
| 136 | imm = (1ull << (S + 1)) - 1; |
| 137 | |
| 138 | /* Rotate to the left by simd_size - R. */ |
| 139 | if (R != 0) |
| 140 | imm = ((imm << (simd_size - R)) & mask) | (imm >> R); |
| 141 | |
| 142 | /* Replicate the value according to SIMD size. */ |
| 143 | switch (simd_size) |
| 144 | { |
| 145 | case 2: imm = (imm << 2) | imm; |
| 146 | case 4: imm = (imm << 4) | imm; |
| 147 | case 8: imm = (imm << 8) | imm; |
| 148 | case 16: imm = (imm << 16) | imm; |
| 149 | case 32: imm = (imm << 32) | imm; |
| 150 | case 64: break; |
| 151 | default: return 0; |
| 152 | } |
| 153 | |
| 154 | return imm; |
| 155 | } |
| 156 | |
| 157 | /* Instr[22,10] encodes N immr and imms. we want a lookup table |
| 158 | for each possible combination i.e. 13 bits worth of int entries. */ |
| 159 | #define LI_TABLE_SIZE (1 << 13) |
| 160 | static uint64_t LITable[LI_TABLE_SIZE]; |
| 161 | |
| 162 | void |
| 163 | aarch64_init_LIT_table (void) |
| 164 | { |
| 165 | unsigned index; |
| 166 | |
| 167 | for (index = 0; index < LI_TABLE_SIZE; index++) |
| 168 | { |
| 169 | uint32_t N = uimm (index, 12, 12); |
| 170 | uint32_t immr = uimm (index, 11, 6); |
| 171 | uint32_t imms = uimm (index, 5, 0); |
| 172 | |
| 173 | LITable [index] = expand_logical_immediate (imms, immr, N); |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | static void |
| 178 | dexNotify (sim_cpu *cpu) |
| 179 | { |
| 180 | /* instr[14,0] == type : 0 ==> method entry, 1 ==> method reentry |
| 181 | 2 ==> exit Java, 3 ==> start next bytecode. */ |
| 182 | uint32_t type = INSTR (14, 0); |
| 183 | |
| 184 | TRACE_EVENTS (cpu, "Notify Insn encountered, type = 0x%x", type); |
| 185 | |
| 186 | switch (type) |
| 187 | { |
| 188 | case 0: |
| 189 | /* aarch64_notifyMethodEntry (aarch64_get_reg_u64 (cpu, R23, 0), |
| 190 | aarch64_get_reg_u64 (cpu, R22, 0)); */ |
| 191 | break; |
| 192 | case 1: |
| 193 | /* aarch64_notifyMethodReentry (aarch64_get_reg_u64 (cpu, R23, 0), |
| 194 | aarch64_get_reg_u64 (cpu, R22, 0)); */ |
| 195 | break; |
| 196 | case 2: |
| 197 | /* aarch64_notifyMethodExit (); */ |
| 198 | break; |
| 199 | case 3: |
| 200 | /* aarch64_notifyBCStart (aarch64_get_reg_u64 (cpu, R23, 0), |
| 201 | aarch64_get_reg_u64 (cpu, R22, 0)); */ |
| 202 | break; |
| 203 | } |
| 204 | } |
| 205 | |
| 206 | /* secondary decode within top level groups */ |
| 207 | |
| 208 | static void |
| 209 | dexPseudo (sim_cpu *cpu) |
| 210 | { |
| 211 | /* assert instr[28,27] = 00 |
| 212 | |
| 213 | We provide 2 pseudo instructions: |
| 214 | |
| 215 | HALT stops execution of the simulator causing an immediate |
| 216 | return to the x86 code which entered it. |
| 217 | |
| 218 | CALLOUT initiates recursive entry into x86 code. A register |
| 219 | argument holds the address of the x86 routine. Immediate |
| 220 | values in the instruction identify the number of general |
| 221 | purpose and floating point register arguments to be passed |
| 222 | and the type of any value to be returned. */ |
| 223 | |
| 224 | uint32_t PSEUDO_HALT = 0xE0000000U; |
| 225 | uint32_t PSEUDO_CALLOUT = 0x00018000U; |
| 226 | uint32_t PSEUDO_CALLOUTR = 0x00018001U; |
| 227 | uint32_t PSEUDO_NOTIFY = 0x00014000U; |
| 228 | uint32_t dispatch; |
| 229 | |
| 230 | if (aarch64_get_instr (cpu) == PSEUDO_HALT) |
| 231 | { |
| 232 | TRACE_EVENTS (cpu, " Pseudo Halt Instruction"); |
| 233 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu), |
| 234 | sim_stopped, SIM_SIGTRAP); |
| 235 | } |
| 236 | |
| 237 | dispatch = INSTR (31, 15); |
| 238 | |
| 239 | /* We do not handle callouts at the moment. */ |
| 240 | if (dispatch == PSEUDO_CALLOUT || dispatch == PSEUDO_CALLOUTR) |
| 241 | { |
| 242 | TRACE_EVENTS (cpu, " Callout"); |
| 243 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu), |
| 244 | sim_stopped, SIM_SIGABRT); |
| 245 | } |
| 246 | |
| 247 | else if (dispatch == PSEUDO_NOTIFY) |
| 248 | dexNotify (cpu); |
| 249 | |
| 250 | else |
| 251 | HALT_UNALLOC; |
| 252 | } |
| 253 | |
| 254 | /* Load-store single register (unscaled offset) |
| 255 | These instructions employ a base register plus an unscaled signed |
| 256 | 9 bit offset. |
| 257 | |
| 258 | N.B. the base register (source) can be Xn or SP. all other |
| 259 | registers may not be SP. */ |
| 260 | |
| 261 | /* 32 bit load 32 bit unscaled signed 9 bit. */ |
| 262 | static void |
| 263 | ldur32 (sim_cpu *cpu, int32_t offset) |
| 264 | { |
| 265 | unsigned rn = INSTR (9, 5); |
| 266 | unsigned rt = INSTR (4, 0); |
| 267 | |
| 268 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 269 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u32 |
| 270 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 271 | + offset)); |
| 272 | } |
| 273 | |
| 274 | /* 64 bit load 64 bit unscaled signed 9 bit. */ |
| 275 | static void |
| 276 | ldur64 (sim_cpu *cpu, int32_t offset) |
| 277 | { |
| 278 | unsigned rn = INSTR (9, 5); |
| 279 | unsigned rt = INSTR (4, 0); |
| 280 | |
| 281 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 282 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u64 |
| 283 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 284 | + offset)); |
| 285 | } |
| 286 | |
| 287 | /* 32 bit load zero-extended byte unscaled signed 9 bit. */ |
| 288 | static void |
| 289 | ldurb32 (sim_cpu *cpu, int32_t offset) |
| 290 | { |
| 291 | unsigned rn = INSTR (9, 5); |
| 292 | unsigned rt = INSTR (4, 0); |
| 293 | |
| 294 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 295 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u8 |
| 296 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 297 | + offset)); |
| 298 | } |
| 299 | |
| 300 | /* 32 bit load sign-extended byte unscaled signed 9 bit. */ |
| 301 | static void |
| 302 | ldursb32 (sim_cpu *cpu, int32_t offset) |
| 303 | { |
| 304 | unsigned rn = INSTR (9, 5); |
| 305 | unsigned rt = INSTR (4, 0); |
| 306 | |
| 307 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 308 | aarch64_set_reg_u64 (cpu, rt, NO_SP, (uint32_t) aarch64_get_mem_s8 |
| 309 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 310 | + offset)); |
| 311 | } |
| 312 | |
| 313 | /* 64 bit load sign-extended byte unscaled signed 9 bit. */ |
| 314 | static void |
| 315 | ldursb64 (sim_cpu *cpu, int32_t offset) |
| 316 | { |
| 317 | unsigned rn = INSTR (9, 5); |
| 318 | unsigned rt = INSTR (4, 0); |
| 319 | |
| 320 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 321 | aarch64_set_reg_s64 (cpu, rt, NO_SP, aarch64_get_mem_s8 |
| 322 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 323 | + offset)); |
| 324 | } |
| 325 | |
| 326 | /* 32 bit load zero-extended short unscaled signed 9 bit */ |
| 327 | static void |
| 328 | ldurh32 (sim_cpu *cpu, int32_t offset) |
| 329 | { |
| 330 | unsigned rn = INSTR (9, 5); |
| 331 | unsigned rd = INSTR (4, 0); |
| 332 | |
| 333 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 334 | aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_mem_u16 |
| 335 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 336 | + offset)); |
| 337 | } |
| 338 | |
| 339 | /* 32 bit load sign-extended short unscaled signed 9 bit */ |
| 340 | static void |
| 341 | ldursh32 (sim_cpu *cpu, int32_t offset) |
| 342 | { |
| 343 | unsigned rn = INSTR (9, 5); |
| 344 | unsigned rd = INSTR (4, 0); |
| 345 | |
| 346 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 347 | aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) aarch64_get_mem_s16 |
| 348 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 349 | + offset)); |
| 350 | } |
| 351 | |
| 352 | /* 64 bit load sign-extended short unscaled signed 9 bit */ |
| 353 | static void |
| 354 | ldursh64 (sim_cpu *cpu, int32_t offset) |
| 355 | { |
| 356 | unsigned rn = INSTR (9, 5); |
| 357 | unsigned rt = INSTR (4, 0); |
| 358 | |
| 359 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 360 | aarch64_set_reg_s64 (cpu, rt, NO_SP, aarch64_get_mem_s16 |
| 361 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 362 | + offset)); |
| 363 | } |
| 364 | |
| 365 | /* 64 bit load sign-extended word unscaled signed 9 bit */ |
| 366 | static void |
| 367 | ldursw (sim_cpu *cpu, int32_t offset) |
| 368 | { |
| 369 | unsigned rn = INSTR (9, 5); |
| 370 | unsigned rd = INSTR (4, 0); |
| 371 | |
| 372 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 373 | aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) aarch64_get_mem_s32 |
| 374 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 375 | + offset)); |
| 376 | } |
| 377 | |
| 378 | /* N.B. with stores the value in source is written to the address |
| 379 | identified by source2 modified by offset. */ |
| 380 | |
| 381 | /* 32 bit store 32 bit unscaled signed 9 bit. */ |
| 382 | static void |
| 383 | stur32 (sim_cpu *cpu, int32_t offset) |
| 384 | { |
| 385 | unsigned rn = INSTR (9, 5); |
| 386 | unsigned rd = INSTR (4, 0); |
| 387 | |
| 388 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 389 | aarch64_set_mem_u32 (cpu, |
| 390 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset, |
| 391 | aarch64_get_reg_u32 (cpu, rd, NO_SP)); |
| 392 | } |
| 393 | |
| 394 | /* 64 bit store 64 bit unscaled signed 9 bit */ |
| 395 | static void |
| 396 | stur64 (sim_cpu *cpu, int32_t offset) |
| 397 | { |
| 398 | unsigned rn = INSTR (9, 5); |
| 399 | unsigned rd = INSTR (4, 0); |
| 400 | |
| 401 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 402 | aarch64_set_mem_u64 (cpu, |
| 403 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset, |
| 404 | aarch64_get_reg_u64 (cpu, rd, NO_SP)); |
| 405 | } |
| 406 | |
| 407 | /* 32 bit store byte unscaled signed 9 bit */ |
| 408 | static void |
| 409 | sturb (sim_cpu *cpu, int32_t offset) |
| 410 | { |
| 411 | unsigned rn = INSTR (9, 5); |
| 412 | unsigned rd = INSTR (4, 0); |
| 413 | |
| 414 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 415 | aarch64_set_mem_u8 (cpu, |
| 416 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset, |
| 417 | aarch64_get_reg_u8 (cpu, rd, NO_SP)); |
| 418 | } |
| 419 | |
| 420 | /* 32 bit store short unscaled signed 9 bit */ |
| 421 | static void |
| 422 | sturh (sim_cpu *cpu, int32_t offset) |
| 423 | { |
| 424 | unsigned rn = INSTR (9, 5); |
| 425 | unsigned rd = INSTR (4, 0); |
| 426 | |
| 427 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 428 | aarch64_set_mem_u16 (cpu, |
| 429 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset, |
| 430 | aarch64_get_reg_u16 (cpu, rd, NO_SP)); |
| 431 | } |
| 432 | |
| 433 | /* Load single register pc-relative label |
| 434 | Offset is a signed 19 bit immediate count in words |
| 435 | rt may not be SP. */ |
| 436 | |
| 437 | /* 32 bit pc-relative load */ |
| 438 | static void |
| 439 | ldr32_pcrel (sim_cpu *cpu, int32_t offset) |
| 440 | { |
| 441 | unsigned rd = INSTR (4, 0); |
| 442 | |
| 443 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 444 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 445 | aarch64_get_mem_u32 |
| 446 | (cpu, aarch64_get_PC (cpu) + offset * 4)); |
| 447 | } |
| 448 | |
| 449 | /* 64 bit pc-relative load */ |
| 450 | static void |
| 451 | ldr_pcrel (sim_cpu *cpu, int32_t offset) |
| 452 | { |
| 453 | unsigned rd = INSTR (4, 0); |
| 454 | |
| 455 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 456 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 457 | aarch64_get_mem_u64 |
| 458 | (cpu, aarch64_get_PC (cpu) + offset * 4)); |
| 459 | } |
| 460 | |
| 461 | /* sign extended 32 bit pc-relative load */ |
| 462 | static void |
| 463 | ldrsw_pcrel (sim_cpu *cpu, int32_t offset) |
| 464 | { |
| 465 | unsigned rd = INSTR (4, 0); |
| 466 | |
| 467 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 468 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 469 | aarch64_get_mem_s32 |
| 470 | (cpu, aarch64_get_PC (cpu) + offset * 4)); |
| 471 | } |
| 472 | |
| 473 | /* float pc-relative load */ |
| 474 | static void |
| 475 | fldrs_pcrel (sim_cpu *cpu, int32_t offset) |
| 476 | { |
| 477 | unsigned int rd = INSTR (4, 0); |
| 478 | |
| 479 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 480 | aarch64_set_vec_u32 (cpu, rd, 0, |
| 481 | aarch64_get_mem_u32 |
| 482 | (cpu, aarch64_get_PC (cpu) + offset * 4)); |
| 483 | } |
| 484 | |
| 485 | /* double pc-relative load */ |
| 486 | static void |
| 487 | fldrd_pcrel (sim_cpu *cpu, int32_t offset) |
| 488 | { |
| 489 | unsigned int st = INSTR (4, 0); |
| 490 | |
| 491 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 492 | aarch64_set_vec_u64 (cpu, st, 0, |
| 493 | aarch64_get_mem_u64 |
| 494 | (cpu, aarch64_get_PC (cpu) + offset * 4)); |
| 495 | } |
| 496 | |
| 497 | /* long double pc-relative load. */ |
| 498 | static void |
| 499 | fldrq_pcrel (sim_cpu *cpu, int32_t offset) |
| 500 | { |
| 501 | unsigned int st = INSTR (4, 0); |
| 502 | uint64_t addr = aarch64_get_PC (cpu) + offset * 4; |
| 503 | FRegister a; |
| 504 | |
| 505 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 506 | aarch64_get_mem_long_double (cpu, addr, & a); |
| 507 | aarch64_set_FP_long_double (cpu, st, a); |
| 508 | } |
| 509 | |
| 510 | /* This can be used to scale an offset by applying |
| 511 | the requisite shift. the second argument is either |
| 512 | 16, 32 or 64. */ |
| 513 | |
| 514 | #define SCALE(_offset, _elementSize) \ |
| 515 | ((_offset) << ScaleShift ## _elementSize) |
| 516 | |
| 517 | /* This can be used to optionally scale a register derived offset |
| 518 | by applying the requisite shift as indicated by the Scaling |
| 519 | argument. The second argument is either Byte, Short, Word |
| 520 | or Long. The third argument is either Scaled or Unscaled. |
| 521 | N.B. when _Scaling is Scaled the shift gets ANDed with |
| 522 | all 1s while when it is Unscaled it gets ANDed with 0. */ |
| 523 | |
| 524 | #define OPT_SCALE(_offset, _elementType, _Scaling) \ |
| 525 | ((_offset) << (_Scaling ? ScaleShift ## _elementType : 0)) |
| 526 | |
| 527 | /* This can be used to zero or sign extend a 32 bit register derived |
| 528 | value to a 64 bit value. the first argument must be the value as |
| 529 | a uint32_t and the second must be either UXTW or SXTW. The result |
| 530 | is returned as an int64_t. */ |
| 531 | |
| 532 | static inline int64_t |
| 533 | extend (uint32_t value, Extension extension) |
| 534 | { |
| 535 | union |
| 536 | { |
| 537 | uint32_t u; |
| 538 | int32_t n; |
| 539 | } x; |
| 540 | |
| 541 | /* A branchless variant of this ought to be possible. */ |
| 542 | if (extension == UXTW || extension == NoExtension) |
| 543 | return value; |
| 544 | |
| 545 | x.u = value; |
| 546 | return x.n; |
| 547 | } |
| 548 | |
| 549 | /* Scalar Floating Point |
| 550 | |
| 551 | FP load/store single register (4 addressing modes) |
| 552 | |
| 553 | N.B. the base register (source) can be the stack pointer. |
| 554 | The secondary source register (source2) can only be an Xn register. */ |
| 555 | |
| 556 | /* Load 32 bit unscaled signed 9 bit with pre- or post-writeback. */ |
| 557 | static void |
| 558 | fldrs_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 559 | { |
| 560 | unsigned rn = INSTR (9, 5); |
| 561 | unsigned st = INSTR (4, 0); |
| 562 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 563 | |
| 564 | if (wb != Post) |
| 565 | address += offset; |
| 566 | |
| 567 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 568 | aarch64_set_vec_u32 (cpu, st, 0, aarch64_get_mem_u32 (cpu, address)); |
| 569 | if (wb == Post) |
| 570 | address += offset; |
| 571 | |
| 572 | if (wb != NoWriteBack) |
| 573 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 574 | } |
| 575 | |
| 576 | /* Load 8 bit with unsigned 12 bit offset. */ |
| 577 | static void |
| 578 | fldrb_abs (sim_cpu *cpu, uint32_t offset) |
| 579 | { |
| 580 | unsigned rd = INSTR (4, 0); |
| 581 | unsigned rn = INSTR (9, 5); |
| 582 | uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset; |
| 583 | |
| 584 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 585 | aarch64_set_vec_u8 (cpu, rd, 0, aarch64_get_mem_u32 (cpu, addr)); |
| 586 | } |
| 587 | |
| 588 | /* Load 16 bit scaled unsigned 12 bit. */ |
| 589 | static void |
| 590 | fldrh_abs (sim_cpu *cpu, uint32_t offset) |
| 591 | { |
| 592 | unsigned rd = INSTR (4, 0); |
| 593 | unsigned rn = INSTR (9, 5); |
| 594 | uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 16); |
| 595 | |
| 596 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 597 | aarch64_set_vec_u16 (cpu, rd, 0, aarch64_get_mem_u16 (cpu, addr)); |
| 598 | } |
| 599 | |
| 600 | /* Load 32 bit scaled unsigned 12 bit. */ |
| 601 | static void |
| 602 | fldrs_abs (sim_cpu *cpu, uint32_t offset) |
| 603 | { |
| 604 | unsigned rd = INSTR (4, 0); |
| 605 | unsigned rn = INSTR (9, 5); |
| 606 | uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 32); |
| 607 | |
| 608 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 609 | aarch64_set_vec_u32 (cpu, rd, 0, aarch64_get_mem_u32 (cpu, addr)); |
| 610 | } |
| 611 | |
| 612 | /* Load 64 bit scaled unsigned 12 bit. */ |
| 613 | static void |
| 614 | fldrd_abs (sim_cpu *cpu, uint32_t offset) |
| 615 | { |
| 616 | unsigned rd = INSTR (4, 0); |
| 617 | unsigned rn = INSTR (9, 5); |
| 618 | uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 64); |
| 619 | |
| 620 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 621 | aarch64_set_vec_u64 (cpu, rd, 0, aarch64_get_mem_u64 (cpu, addr)); |
| 622 | } |
| 623 | |
| 624 | /* Load 128 bit scaled unsigned 12 bit. */ |
| 625 | static void |
| 626 | fldrq_abs (sim_cpu *cpu, uint32_t offset) |
| 627 | { |
| 628 | unsigned rd = INSTR (4, 0); |
| 629 | unsigned rn = INSTR (9, 5); |
| 630 | uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 128); |
| 631 | |
| 632 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 633 | aarch64_set_vec_u64 (cpu, rd, 0, aarch64_get_mem_u64 (cpu, addr)); |
| 634 | aarch64_set_vec_u64 (cpu, rd, 1, aarch64_get_mem_u64 (cpu, addr + 8)); |
| 635 | } |
| 636 | |
| 637 | /* Load 32 bit scaled or unscaled zero- or sign-extended |
| 638 | 32-bit register offset. */ |
| 639 | static void |
| 640 | fldrs_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 641 | { |
| 642 | unsigned rm = INSTR (20, 16); |
| 643 | unsigned rn = INSTR (9, 5); |
| 644 | unsigned st = INSTR (4, 0); |
| 645 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 646 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 647 | uint64_t displacement = OPT_SCALE (extended, 32, scaling); |
| 648 | |
| 649 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 650 | aarch64_set_vec_u32 (cpu, st, 0, aarch64_get_mem_u32 |
| 651 | (cpu, address + displacement)); |
| 652 | } |
| 653 | |
| 654 | /* Load 64 bit unscaled signed 9 bit with pre- or post-writeback. */ |
| 655 | static void |
| 656 | fldrd_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 657 | { |
| 658 | unsigned rn = INSTR (9, 5); |
| 659 | unsigned st = INSTR (4, 0); |
| 660 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 661 | |
| 662 | if (wb != Post) |
| 663 | address += offset; |
| 664 | |
| 665 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 666 | aarch64_set_vec_u64 (cpu, st, 0, aarch64_get_mem_u64 (cpu, address)); |
| 667 | |
| 668 | if (wb == Post) |
| 669 | address += offset; |
| 670 | |
| 671 | if (wb != NoWriteBack) |
| 672 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 673 | } |
| 674 | |
| 675 | /* Load 64 bit scaled or unscaled zero- or sign-extended 32-bit register offset. */ |
| 676 | static void |
| 677 | fldrd_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 678 | { |
| 679 | unsigned rm = INSTR (20, 16); |
| 680 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 681 | uint64_t displacement = OPT_SCALE (extended, 64, scaling); |
| 682 | |
| 683 | fldrd_wb (cpu, displacement, NoWriteBack); |
| 684 | } |
| 685 | |
| 686 | /* Load 128 bit unscaled signed 9 bit with pre- or post-writeback. */ |
| 687 | static void |
| 688 | fldrq_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 689 | { |
| 690 | FRegister a; |
| 691 | unsigned rn = INSTR (9, 5); |
| 692 | unsigned st = INSTR (4, 0); |
| 693 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 694 | |
| 695 | if (wb != Post) |
| 696 | address += offset; |
| 697 | |
| 698 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 699 | aarch64_get_mem_long_double (cpu, address, & a); |
| 700 | aarch64_set_FP_long_double (cpu, st, a); |
| 701 | |
| 702 | if (wb == Post) |
| 703 | address += offset; |
| 704 | |
| 705 | if (wb != NoWriteBack) |
| 706 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 707 | } |
| 708 | |
| 709 | /* Load 128 bit scaled or unscaled zero- or sign-extended 32-bit register offset */ |
| 710 | static void |
| 711 | fldrq_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 712 | { |
| 713 | unsigned rm = INSTR (20, 16); |
| 714 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 715 | uint64_t displacement = OPT_SCALE (extended, 128, scaling); |
| 716 | |
| 717 | fldrq_wb (cpu, displacement, NoWriteBack); |
| 718 | } |
| 719 | |
| 720 | /* Memory Access |
| 721 | |
| 722 | load-store single register |
| 723 | There are four addressing modes available here which all employ a |
| 724 | 64 bit source (base) register. |
| 725 | |
| 726 | N.B. the base register (source) can be the stack pointer. |
| 727 | The secondary source register (source2)can only be an Xn register. |
| 728 | |
| 729 | Scaled, 12-bit, unsigned immediate offset, without pre- and |
| 730 | post-index options. |
| 731 | Unscaled, 9-bit, signed immediate offset with pre- or post-index |
| 732 | writeback. |
| 733 | scaled or unscaled 64-bit register offset. |
| 734 | scaled or unscaled 32-bit extended register offset. |
| 735 | |
| 736 | All offsets are assumed to be raw from the decode i.e. the |
| 737 | simulator is expected to adjust scaled offsets based on the |
| 738 | accessed data size with register or extended register offset |
| 739 | versions the same applies except that in the latter case the |
| 740 | operation may also require a sign extend. |
| 741 | |
| 742 | A separate method is provided for each possible addressing mode. */ |
| 743 | |
| 744 | /* 32 bit load 32 bit scaled unsigned 12 bit */ |
| 745 | static void |
| 746 | ldr32_abs (sim_cpu *cpu, uint32_t offset) |
| 747 | { |
| 748 | unsigned rn = INSTR (9, 5); |
| 749 | unsigned rt = INSTR (4, 0); |
| 750 | |
| 751 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 752 | /* The target register may not be SP but the source may be. */ |
| 753 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u32 |
| 754 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 755 | + SCALE (offset, 32))); |
| 756 | } |
| 757 | |
| 758 | /* 32 bit load 32 bit unscaled signed 9 bit with pre- or post-writeback. */ |
| 759 | static void |
| 760 | ldr32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 761 | { |
| 762 | unsigned rn = INSTR (9, 5); |
| 763 | unsigned rt = INSTR (4, 0); |
| 764 | uint64_t address; |
| 765 | |
| 766 | if (rn == rt && wb != NoWriteBack) |
| 767 | HALT_UNALLOC; |
| 768 | |
| 769 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 770 | |
| 771 | if (wb != Post) |
| 772 | address += offset; |
| 773 | |
| 774 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 775 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u32 (cpu, address)); |
| 776 | |
| 777 | if (wb == Post) |
| 778 | address += offset; |
| 779 | |
| 780 | if (wb != NoWriteBack) |
| 781 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 782 | } |
| 783 | |
| 784 | /* 32 bit load 32 bit scaled or unscaled |
| 785 | zero- or sign-extended 32-bit register offset */ |
| 786 | static void |
| 787 | ldr32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 788 | { |
| 789 | unsigned rm = INSTR (20, 16); |
| 790 | unsigned rn = INSTR (9, 5); |
| 791 | unsigned rt = INSTR (4, 0); |
| 792 | /* rn may reference SP, rm and rt must reference ZR */ |
| 793 | |
| 794 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 795 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 796 | uint64_t displacement = OPT_SCALE (extended, 32, scaling); |
| 797 | |
| 798 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 799 | aarch64_set_reg_u64 (cpu, rt, NO_SP, |
| 800 | aarch64_get_mem_u32 (cpu, address + displacement)); |
| 801 | } |
| 802 | |
| 803 | /* 64 bit load 64 bit scaled unsigned 12 bit */ |
| 804 | static void |
| 805 | ldr_abs (sim_cpu *cpu, uint32_t offset) |
| 806 | { |
| 807 | unsigned rn = INSTR (9, 5); |
| 808 | unsigned rt = INSTR (4, 0); |
| 809 | |
| 810 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 811 | /* The target register may not be SP but the source may be. */ |
| 812 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u64 |
| 813 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 814 | + SCALE (offset, 64))); |
| 815 | } |
| 816 | |
| 817 | /* 64 bit load 64 bit unscaled signed 9 bit with pre- or post-writeback. */ |
| 818 | static void |
| 819 | ldr_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 820 | { |
| 821 | unsigned rn = INSTR (9, 5); |
| 822 | unsigned rt = INSTR (4, 0); |
| 823 | uint64_t address; |
| 824 | |
| 825 | if (rn == rt && wb != NoWriteBack) |
| 826 | HALT_UNALLOC; |
| 827 | |
| 828 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 829 | |
| 830 | if (wb != Post) |
| 831 | address += offset; |
| 832 | |
| 833 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 834 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u64 (cpu, address)); |
| 835 | |
| 836 | if (wb == Post) |
| 837 | address += offset; |
| 838 | |
| 839 | if (wb != NoWriteBack) |
| 840 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 841 | } |
| 842 | |
| 843 | /* 64 bit load 64 bit scaled or unscaled zero- |
| 844 | or sign-extended 32-bit register offset. */ |
| 845 | static void |
| 846 | ldr_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 847 | { |
| 848 | unsigned rm = INSTR (20, 16); |
| 849 | unsigned rn = INSTR (9, 5); |
| 850 | unsigned rt = INSTR (4, 0); |
| 851 | /* rn may reference SP, rm and rt must reference ZR */ |
| 852 | |
| 853 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 854 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 855 | uint64_t displacement = OPT_SCALE (extended, 64, scaling); |
| 856 | |
| 857 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 858 | aarch64_set_reg_u64 (cpu, rt, NO_SP, |
| 859 | aarch64_get_mem_u64 (cpu, address + displacement)); |
| 860 | } |
| 861 | |
| 862 | /* 32 bit load zero-extended byte scaled unsigned 12 bit. */ |
| 863 | static void |
| 864 | ldrb32_abs (sim_cpu *cpu, uint32_t offset) |
| 865 | { |
| 866 | unsigned rn = INSTR (9, 5); |
| 867 | unsigned rt = INSTR (4, 0); |
| 868 | |
| 869 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 870 | /* The target register may not be SP but the source may be |
| 871 | there is no scaling required for a byte load. */ |
| 872 | aarch64_set_reg_u64 (cpu, rt, NO_SP, |
| 873 | aarch64_get_mem_u8 |
| 874 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset)); |
| 875 | } |
| 876 | |
| 877 | /* 32 bit load zero-extended byte unscaled signed 9 bit with pre- or post-writeback. */ |
| 878 | static void |
| 879 | ldrb32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 880 | { |
| 881 | unsigned rn = INSTR (9, 5); |
| 882 | unsigned rt = INSTR (4, 0); |
| 883 | uint64_t address; |
| 884 | |
| 885 | if (rn == rt && wb != NoWriteBack) |
| 886 | HALT_UNALLOC; |
| 887 | |
| 888 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 889 | |
| 890 | if (wb != Post) |
| 891 | address += offset; |
| 892 | |
| 893 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 894 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u8 (cpu, address)); |
| 895 | |
| 896 | if (wb == Post) |
| 897 | address += offset; |
| 898 | |
| 899 | if (wb != NoWriteBack) |
| 900 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 901 | } |
| 902 | |
| 903 | /* 32 bit load zero-extended byte scaled or unscaled zero- |
| 904 | or sign-extended 32-bit register offset. */ |
| 905 | static void |
| 906 | ldrb32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 907 | { |
| 908 | unsigned rm = INSTR (20, 16); |
| 909 | unsigned rn = INSTR (9, 5); |
| 910 | unsigned rt = INSTR (4, 0); |
| 911 | /* rn may reference SP, rm and rt must reference ZR */ |
| 912 | |
| 913 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 914 | int64_t displacement = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 915 | extension); |
| 916 | |
| 917 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 918 | /* There is no scaling required for a byte load. */ |
| 919 | aarch64_set_reg_u64 (cpu, rt, NO_SP, |
| 920 | aarch64_get_mem_u8 (cpu, address + displacement)); |
| 921 | } |
| 922 | |
| 923 | /* 64 bit load sign-extended byte unscaled signed 9 bit |
| 924 | with pre- or post-writeback. */ |
| 925 | static void |
| 926 | ldrsb_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 927 | { |
| 928 | unsigned rn = INSTR (9, 5); |
| 929 | unsigned rt = INSTR (4, 0); |
| 930 | uint64_t address; |
| 931 | int64_t val; |
| 932 | |
| 933 | if (rn == rt && wb != NoWriteBack) |
| 934 | HALT_UNALLOC; |
| 935 | |
| 936 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 937 | |
| 938 | if (wb != Post) |
| 939 | address += offset; |
| 940 | |
| 941 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 942 | val = aarch64_get_mem_s8 (cpu, address); |
| 943 | aarch64_set_reg_s64 (cpu, rt, NO_SP, val); |
| 944 | |
| 945 | if (wb == Post) |
| 946 | address += offset; |
| 947 | |
| 948 | if (wb != NoWriteBack) |
| 949 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 950 | } |
| 951 | |
| 952 | /* 64 bit load sign-extended byte scaled unsigned 12 bit. */ |
| 953 | static void |
| 954 | ldrsb_abs (sim_cpu *cpu, uint32_t offset) |
| 955 | { |
| 956 | ldrsb_wb (cpu, offset, NoWriteBack); |
| 957 | } |
| 958 | |
| 959 | /* 64 bit load sign-extended byte scaled or unscaled zero- |
| 960 | or sign-extended 32-bit register offset. */ |
| 961 | static void |
| 962 | ldrsb_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 963 | { |
| 964 | unsigned rm = INSTR (20, 16); |
| 965 | unsigned rn = INSTR (9, 5); |
| 966 | unsigned rt = INSTR (4, 0); |
| 967 | /* rn may reference SP, rm and rt must reference ZR */ |
| 968 | |
| 969 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 970 | int64_t displacement = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 971 | extension); |
| 972 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 973 | /* There is no scaling required for a byte load. */ |
| 974 | aarch64_set_reg_s64 (cpu, rt, NO_SP, |
| 975 | aarch64_get_mem_s8 (cpu, address + displacement)); |
| 976 | } |
| 977 | |
| 978 | /* 32 bit load zero-extended short scaled unsigned 12 bit. */ |
| 979 | static void |
| 980 | ldrh32_abs (sim_cpu *cpu, uint32_t offset) |
| 981 | { |
| 982 | unsigned rn = INSTR (9, 5); |
| 983 | unsigned rt = INSTR (4, 0); |
| 984 | uint32_t val; |
| 985 | |
| 986 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 987 | /* The target register may not be SP but the source may be. */ |
| 988 | val = aarch64_get_mem_u16 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 989 | + SCALE (offset, 16)); |
| 990 | aarch64_set_reg_u32 (cpu, rt, NO_SP, val); |
| 991 | } |
| 992 | |
| 993 | /* 32 bit load zero-extended short unscaled signed 9 bit |
| 994 | with pre- or post-writeback. */ |
| 995 | static void |
| 996 | ldrh32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 997 | { |
| 998 | unsigned rn = INSTR (9, 5); |
| 999 | unsigned rt = INSTR (4, 0); |
| 1000 | uint64_t address; |
| 1001 | |
| 1002 | if (rn == rt && wb != NoWriteBack) |
| 1003 | HALT_UNALLOC; |
| 1004 | |
| 1005 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1006 | |
| 1007 | if (wb != Post) |
| 1008 | address += offset; |
| 1009 | |
| 1010 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1011 | aarch64_set_reg_u32 (cpu, rt, NO_SP, aarch64_get_mem_u16 (cpu, address)); |
| 1012 | |
| 1013 | if (wb == Post) |
| 1014 | address += offset; |
| 1015 | |
| 1016 | if (wb != NoWriteBack) |
| 1017 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 1018 | } |
| 1019 | |
| 1020 | /* 32 bit load zero-extended short scaled or unscaled zero- |
| 1021 | or sign-extended 32-bit register offset. */ |
| 1022 | static void |
| 1023 | ldrh32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 1024 | { |
| 1025 | unsigned rm = INSTR (20, 16); |
| 1026 | unsigned rn = INSTR (9, 5); |
| 1027 | unsigned rt = INSTR (4, 0); |
| 1028 | /* rn may reference SP, rm and rt must reference ZR */ |
| 1029 | |
| 1030 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1031 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 1032 | uint64_t displacement = OPT_SCALE (extended, 16, scaling); |
| 1033 | |
| 1034 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1035 | aarch64_set_reg_u32 (cpu, rt, NO_SP, |
| 1036 | aarch64_get_mem_u16 (cpu, address + displacement)); |
| 1037 | } |
| 1038 | |
| 1039 | /* 32 bit load sign-extended short scaled unsigned 12 bit. */ |
| 1040 | static void |
| 1041 | ldrsh32_abs (sim_cpu *cpu, uint32_t offset) |
| 1042 | { |
| 1043 | unsigned rn = INSTR (9, 5); |
| 1044 | unsigned rt = INSTR (4, 0); |
| 1045 | int32_t val; |
| 1046 | |
| 1047 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1048 | /* The target register may not be SP but the source may be. */ |
| 1049 | val = aarch64_get_mem_s16 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 1050 | + SCALE (offset, 16)); |
| 1051 | aarch64_set_reg_s32 (cpu, rt, NO_SP, val); |
| 1052 | } |
| 1053 | |
| 1054 | /* 32 bit load sign-extended short unscaled signed 9 bit |
| 1055 | with pre- or post-writeback. */ |
| 1056 | static void |
| 1057 | ldrsh32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 1058 | { |
| 1059 | unsigned rn = INSTR (9, 5); |
| 1060 | unsigned rt = INSTR (4, 0); |
| 1061 | uint64_t address; |
| 1062 | |
| 1063 | if (rn == rt && wb != NoWriteBack) |
| 1064 | HALT_UNALLOC; |
| 1065 | |
| 1066 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1067 | |
| 1068 | if (wb != Post) |
| 1069 | address += offset; |
| 1070 | |
| 1071 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1072 | aarch64_set_reg_s32 (cpu, rt, NO_SP, |
| 1073 | (int32_t) aarch64_get_mem_s16 (cpu, address)); |
| 1074 | |
| 1075 | if (wb == Post) |
| 1076 | address += offset; |
| 1077 | |
| 1078 | if (wb != NoWriteBack) |
| 1079 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 1080 | } |
| 1081 | |
| 1082 | /* 32 bit load sign-extended short scaled or unscaled zero- |
| 1083 | or sign-extended 32-bit register offset. */ |
| 1084 | static void |
| 1085 | ldrsh32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 1086 | { |
| 1087 | unsigned rm = INSTR (20, 16); |
| 1088 | unsigned rn = INSTR (9, 5); |
| 1089 | unsigned rt = INSTR (4, 0); |
| 1090 | /* rn may reference SP, rm and rt must reference ZR */ |
| 1091 | |
| 1092 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1093 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 1094 | uint64_t displacement = OPT_SCALE (extended, 16, scaling); |
| 1095 | |
| 1096 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1097 | aarch64_set_reg_s32 (cpu, rt, NO_SP, |
| 1098 | (int32_t) aarch64_get_mem_s16 |
| 1099 | (cpu, address + displacement)); |
| 1100 | } |
| 1101 | |
| 1102 | /* 64 bit load sign-extended short scaled unsigned 12 bit. */ |
| 1103 | static void |
| 1104 | ldrsh_abs (sim_cpu *cpu, uint32_t offset) |
| 1105 | { |
| 1106 | unsigned rn = INSTR (9, 5); |
| 1107 | unsigned rt = INSTR (4, 0); |
| 1108 | int64_t val; |
| 1109 | |
| 1110 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1111 | /* The target register may not be SP but the source may be. */ |
| 1112 | val = aarch64_get_mem_s16 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 1113 | + SCALE (offset, 16)); |
| 1114 | aarch64_set_reg_s64 (cpu, rt, NO_SP, val); |
| 1115 | } |
| 1116 | |
| 1117 | /* 64 bit load sign-extended short unscaled signed 9 bit |
| 1118 | with pre- or post-writeback. */ |
| 1119 | static void |
| 1120 | ldrsh64_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 1121 | { |
| 1122 | unsigned rn = INSTR (9, 5); |
| 1123 | unsigned rt = INSTR (4, 0); |
| 1124 | uint64_t address; |
| 1125 | int64_t val; |
| 1126 | |
| 1127 | if (rn == rt && wb != NoWriteBack) |
| 1128 | HALT_UNALLOC; |
| 1129 | |
| 1130 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1131 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1132 | |
| 1133 | if (wb != Post) |
| 1134 | address += offset; |
| 1135 | |
| 1136 | val = aarch64_get_mem_s16 (cpu, address); |
| 1137 | aarch64_set_reg_s64 (cpu, rt, NO_SP, val); |
| 1138 | |
| 1139 | if (wb == Post) |
| 1140 | address += offset; |
| 1141 | |
| 1142 | if (wb != NoWriteBack) |
| 1143 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 1144 | } |
| 1145 | |
| 1146 | /* 64 bit load sign-extended short scaled or unscaled zero- |
| 1147 | or sign-extended 32-bit register offset. */ |
| 1148 | static void |
| 1149 | ldrsh_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 1150 | { |
| 1151 | unsigned rm = INSTR (20, 16); |
| 1152 | unsigned rn = INSTR (9, 5); |
| 1153 | unsigned rt = INSTR (4, 0); |
| 1154 | |
| 1155 | /* rn may reference SP, rm and rt must reference ZR */ |
| 1156 | |
| 1157 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1158 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 1159 | uint64_t displacement = OPT_SCALE (extended, 16, scaling); |
| 1160 | int64_t val; |
| 1161 | |
| 1162 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1163 | val = aarch64_get_mem_s16 (cpu, address + displacement); |
| 1164 | aarch64_set_reg_s64 (cpu, rt, NO_SP, val); |
| 1165 | } |
| 1166 | |
| 1167 | /* 64 bit load sign-extended 32 bit scaled unsigned 12 bit. */ |
| 1168 | static void |
| 1169 | ldrsw_abs (sim_cpu *cpu, uint32_t offset) |
| 1170 | { |
| 1171 | unsigned rn = INSTR (9, 5); |
| 1172 | unsigned rt = INSTR (4, 0); |
| 1173 | int64_t val; |
| 1174 | |
| 1175 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1176 | val = aarch64_get_mem_s32 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 1177 | + SCALE (offset, 32)); |
| 1178 | /* The target register may not be SP but the source may be. */ |
| 1179 | return aarch64_set_reg_s64 (cpu, rt, NO_SP, val); |
| 1180 | } |
| 1181 | |
| 1182 | /* 64 bit load sign-extended 32 bit unscaled signed 9 bit |
| 1183 | with pre- or post-writeback. */ |
| 1184 | static void |
| 1185 | ldrsw_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 1186 | { |
| 1187 | unsigned rn = INSTR (9, 5); |
| 1188 | unsigned rt = INSTR (4, 0); |
| 1189 | uint64_t address; |
| 1190 | |
| 1191 | if (rn == rt && wb != NoWriteBack) |
| 1192 | HALT_UNALLOC; |
| 1193 | |
| 1194 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1195 | |
| 1196 | if (wb != Post) |
| 1197 | address += offset; |
| 1198 | |
| 1199 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1200 | aarch64_set_reg_s64 (cpu, rt, NO_SP, aarch64_get_mem_s32 (cpu, address)); |
| 1201 | |
| 1202 | if (wb == Post) |
| 1203 | address += offset; |
| 1204 | |
| 1205 | if (wb != NoWriteBack) |
| 1206 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 1207 | } |
| 1208 | |
| 1209 | /* 64 bit load sign-extended 32 bit scaled or unscaled zero- |
| 1210 | or sign-extended 32-bit register offset. */ |
| 1211 | static void |
| 1212 | ldrsw_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 1213 | { |
| 1214 | unsigned rm = INSTR (20, 16); |
| 1215 | unsigned rn = INSTR (9, 5); |
| 1216 | unsigned rt = INSTR (4, 0); |
| 1217 | /* rn may reference SP, rm and rt must reference ZR */ |
| 1218 | |
| 1219 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1220 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 1221 | uint64_t displacement = OPT_SCALE (extended, 32, scaling); |
| 1222 | |
| 1223 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1224 | aarch64_set_reg_s64 (cpu, rt, NO_SP, |
| 1225 | aarch64_get_mem_s32 (cpu, address + displacement)); |
| 1226 | } |
| 1227 | |
| 1228 | /* N.B. with stores the value in source is written to the |
| 1229 | address identified by source2 modified by source3/offset. */ |
| 1230 | |
| 1231 | /* 32 bit store scaled unsigned 12 bit. */ |
| 1232 | static void |
| 1233 | str32_abs (sim_cpu *cpu, uint32_t offset) |
| 1234 | { |
| 1235 | unsigned rn = INSTR (9, 5); |
| 1236 | unsigned rt = INSTR (4, 0); |
| 1237 | |
| 1238 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1239 | /* The target register may not be SP but the source may be. */ |
| 1240 | aarch64_set_mem_u32 (cpu, (aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 1241 | + SCALE (offset, 32)), |
| 1242 | aarch64_get_reg_u32 (cpu, rt, NO_SP)); |
| 1243 | } |
| 1244 | |
| 1245 | /* 32 bit store unscaled signed 9 bit with pre- or post-writeback. */ |
| 1246 | static void |
| 1247 | str32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 1248 | { |
| 1249 | unsigned rn = INSTR (9, 5); |
| 1250 | unsigned rt = INSTR (4, 0); |
| 1251 | uint64_t address; |
| 1252 | |
| 1253 | if (rn == rt && wb != NoWriteBack) |
| 1254 | HALT_UNALLOC; |
| 1255 | |
| 1256 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1257 | if (wb != Post) |
| 1258 | address += offset; |
| 1259 | |
| 1260 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1261 | aarch64_set_mem_u32 (cpu, address, aarch64_get_reg_u32 (cpu, rt, NO_SP)); |
| 1262 | |
| 1263 | if (wb == Post) |
| 1264 | address += offset; |
| 1265 | |
| 1266 | if (wb != NoWriteBack) |
| 1267 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 1268 | } |
| 1269 | |
| 1270 | /* 32 bit store scaled or unscaled zero- or |
| 1271 | sign-extended 32-bit register offset. */ |
| 1272 | static void |
| 1273 | str32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 1274 | { |
| 1275 | unsigned rm = INSTR (20, 16); |
| 1276 | unsigned rn = INSTR (9, 5); |
| 1277 | unsigned rt = INSTR (4, 0); |
| 1278 | |
| 1279 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1280 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 1281 | uint64_t displacement = OPT_SCALE (extended, 32, scaling); |
| 1282 | |
| 1283 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1284 | aarch64_set_mem_u32 (cpu, address + displacement, |
| 1285 | aarch64_get_reg_u64 (cpu, rt, NO_SP)); |
| 1286 | } |
| 1287 | |
| 1288 | /* 64 bit store scaled unsigned 12 bit. */ |
| 1289 | static void |
| 1290 | str_abs (sim_cpu *cpu, uint32_t offset) |
| 1291 | { |
| 1292 | unsigned rn = INSTR (9, 5); |
| 1293 | unsigned rt = INSTR (4, 0); |
| 1294 | |
| 1295 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1296 | aarch64_set_mem_u64 (cpu, |
| 1297 | aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 1298 | + SCALE (offset, 64), |
| 1299 | aarch64_get_reg_u64 (cpu, rt, NO_SP)); |
| 1300 | } |
| 1301 | |
| 1302 | /* 64 bit store unscaled signed 9 bit with pre- or post-writeback. */ |
| 1303 | static void |
| 1304 | str_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 1305 | { |
| 1306 | unsigned rn = INSTR (9, 5); |
| 1307 | unsigned rt = INSTR (4, 0); |
| 1308 | uint64_t address; |
| 1309 | |
| 1310 | if (rn == rt && wb != NoWriteBack) |
| 1311 | HALT_UNALLOC; |
| 1312 | |
| 1313 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1314 | |
| 1315 | if (wb != Post) |
| 1316 | address += offset; |
| 1317 | |
| 1318 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1319 | aarch64_set_mem_u64 (cpu, address, aarch64_get_reg_u64 (cpu, rt, NO_SP)); |
| 1320 | |
| 1321 | if (wb == Post) |
| 1322 | address += offset; |
| 1323 | |
| 1324 | if (wb != NoWriteBack) |
| 1325 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 1326 | } |
| 1327 | |
| 1328 | /* 64 bit store scaled or unscaled zero- |
| 1329 | or sign-extended 32-bit register offset. */ |
| 1330 | static void |
| 1331 | str_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 1332 | { |
| 1333 | unsigned rm = INSTR (20, 16); |
| 1334 | unsigned rn = INSTR (9, 5); |
| 1335 | unsigned rt = INSTR (4, 0); |
| 1336 | /* rn may reference SP, rm and rt must reference ZR */ |
| 1337 | |
| 1338 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1339 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 1340 | extension); |
| 1341 | uint64_t displacement = OPT_SCALE (extended, 64, scaling); |
| 1342 | |
| 1343 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1344 | aarch64_set_mem_u64 (cpu, address + displacement, |
| 1345 | aarch64_get_reg_u64 (cpu, rt, NO_SP)); |
| 1346 | } |
| 1347 | |
| 1348 | /* 32 bit store byte scaled unsigned 12 bit. */ |
| 1349 | static void |
| 1350 | strb_abs (sim_cpu *cpu, uint32_t offset) |
| 1351 | { |
| 1352 | unsigned rn = INSTR (9, 5); |
| 1353 | unsigned rt = INSTR (4, 0); |
| 1354 | |
| 1355 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1356 | /* The target register may not be SP but the source may be. |
| 1357 | There is no scaling required for a byte load. */ |
| 1358 | aarch64_set_mem_u8 (cpu, |
| 1359 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset, |
| 1360 | aarch64_get_reg_u8 (cpu, rt, NO_SP)); |
| 1361 | } |
| 1362 | |
| 1363 | /* 32 bit store byte unscaled signed 9 bit with pre- or post-writeback. */ |
| 1364 | static void |
| 1365 | strb_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 1366 | { |
| 1367 | unsigned rn = INSTR (9, 5); |
| 1368 | unsigned rt = INSTR (4, 0); |
| 1369 | uint64_t address; |
| 1370 | |
| 1371 | if (rn == rt && wb != NoWriteBack) |
| 1372 | HALT_UNALLOC; |
| 1373 | |
| 1374 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1375 | |
| 1376 | if (wb != Post) |
| 1377 | address += offset; |
| 1378 | |
| 1379 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1380 | aarch64_set_mem_u8 (cpu, address, aarch64_get_reg_u8 (cpu, rt, NO_SP)); |
| 1381 | |
| 1382 | if (wb == Post) |
| 1383 | address += offset; |
| 1384 | |
| 1385 | if (wb != NoWriteBack) |
| 1386 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 1387 | } |
| 1388 | |
| 1389 | /* 32 bit store byte scaled or unscaled zero- |
| 1390 | or sign-extended 32-bit register offset. */ |
| 1391 | static void |
| 1392 | strb_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 1393 | { |
| 1394 | unsigned rm = INSTR (20, 16); |
| 1395 | unsigned rn = INSTR (9, 5); |
| 1396 | unsigned rt = INSTR (4, 0); |
| 1397 | /* rn may reference SP, rm and rt must reference ZR */ |
| 1398 | |
| 1399 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1400 | int64_t displacement = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 1401 | extension); |
| 1402 | |
| 1403 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1404 | /* There is no scaling required for a byte load. */ |
| 1405 | aarch64_set_mem_u8 (cpu, address + displacement, |
| 1406 | aarch64_get_reg_u8 (cpu, rt, NO_SP)); |
| 1407 | } |
| 1408 | |
| 1409 | /* 32 bit store short scaled unsigned 12 bit. */ |
| 1410 | static void |
| 1411 | strh_abs (sim_cpu *cpu, uint32_t offset) |
| 1412 | { |
| 1413 | unsigned rn = INSTR (9, 5); |
| 1414 | unsigned rt = INSTR (4, 0); |
| 1415 | |
| 1416 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1417 | /* The target register may not be SP but the source may be. */ |
| 1418 | aarch64_set_mem_u16 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 1419 | + SCALE (offset, 16), |
| 1420 | aarch64_get_reg_u16 (cpu, rt, NO_SP)); |
| 1421 | } |
| 1422 | |
| 1423 | /* 32 bit store short unscaled signed 9 bit with pre- or post-writeback. */ |
| 1424 | static void |
| 1425 | strh_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 1426 | { |
| 1427 | unsigned rn = INSTR (9, 5); |
| 1428 | unsigned rt = INSTR (4, 0); |
| 1429 | uint64_t address; |
| 1430 | |
| 1431 | if (rn == rt && wb != NoWriteBack) |
| 1432 | HALT_UNALLOC; |
| 1433 | |
| 1434 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1435 | |
| 1436 | if (wb != Post) |
| 1437 | address += offset; |
| 1438 | |
| 1439 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1440 | aarch64_set_mem_u16 (cpu, address, aarch64_get_reg_u16 (cpu, rt, NO_SP)); |
| 1441 | |
| 1442 | if (wb == Post) |
| 1443 | address += offset; |
| 1444 | |
| 1445 | if (wb != NoWriteBack) |
| 1446 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 1447 | } |
| 1448 | |
| 1449 | /* 32 bit store short scaled or unscaled zero- |
| 1450 | or sign-extended 32-bit register offset. */ |
| 1451 | static void |
| 1452 | strh_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 1453 | { |
| 1454 | unsigned rm = INSTR (20, 16); |
| 1455 | unsigned rn = INSTR (9, 5); |
| 1456 | unsigned rt = INSTR (4, 0); |
| 1457 | /* rn may reference SP, rm and rt must reference ZR */ |
| 1458 | |
| 1459 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1460 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), extension); |
| 1461 | uint64_t displacement = OPT_SCALE (extended, 16, scaling); |
| 1462 | |
| 1463 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1464 | aarch64_set_mem_u16 (cpu, address + displacement, |
| 1465 | aarch64_get_reg_u16 (cpu, rt, NO_SP)); |
| 1466 | } |
| 1467 | |
| 1468 | /* Prefetch unsigned 12 bit. */ |
| 1469 | static void |
| 1470 | prfm_abs (sim_cpu *cpu, uint32_t offset) |
| 1471 | { |
| 1472 | /* instr[4,0] = prfop : 00000 ==> PLDL1KEEP, 00001 ==> PLDL1STRM, |
| 1473 | 00010 ==> PLDL2KEEP, 00001 ==> PLDL2STRM, |
| 1474 | 00100 ==> PLDL3KEEP, 00101 ==> PLDL3STRM, |
| 1475 | 10000 ==> PSTL1KEEP, 10001 ==> PSTL1STRM, |
| 1476 | 10010 ==> PSTL2KEEP, 10001 ==> PSTL2STRM, |
| 1477 | 10100 ==> PSTL3KEEP, 10101 ==> PSTL3STRM, |
| 1478 | ow ==> UNALLOC |
| 1479 | PrfOp prfop = prfop (instr, 4, 0); |
| 1480 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 1481 | + SCALE (offset, 64). */ |
| 1482 | |
| 1483 | /* TODO : implement prefetch of address. */ |
| 1484 | } |
| 1485 | |
| 1486 | /* Prefetch scaled or unscaled zero- or sign-extended 32-bit register offset. */ |
| 1487 | static void |
| 1488 | prfm_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 1489 | { |
| 1490 | /* instr[4,0] = prfop : 00000 ==> PLDL1KEEP, 00001 ==> PLDL1STRM, |
| 1491 | 00010 ==> PLDL2KEEP, 00001 ==> PLDL2STRM, |
| 1492 | 00100 ==> PLDL3KEEP, 00101 ==> PLDL3STRM, |
| 1493 | 10000 ==> PSTL1KEEP, 10001 ==> PSTL1STRM, |
| 1494 | 10010 ==> PSTL2KEEP, 10001 ==> PSTL2STRM, |
| 1495 | 10100 ==> PSTL3KEEP, 10101 ==> PSTL3STRM, |
| 1496 | ow ==> UNALLOC |
| 1497 | rn may reference SP, rm may only reference ZR |
| 1498 | PrfOp prfop = prfop (instr, 4, 0); |
| 1499 | uint64_t base = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1500 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 1501 | extension); |
| 1502 | uint64_t displacement = OPT_SCALE (extended, 64, scaling); |
| 1503 | uint64_t address = base + displacement. */ |
| 1504 | |
| 1505 | /* TODO : implement prefetch of address */ |
| 1506 | } |
| 1507 | |
| 1508 | /* 64 bit pc-relative prefetch. */ |
| 1509 | static void |
| 1510 | prfm_pcrel (sim_cpu *cpu, int32_t offset) |
| 1511 | { |
| 1512 | /* instr[4,0] = prfop : 00000 ==> PLDL1KEEP, 00001 ==> PLDL1STRM, |
| 1513 | 00010 ==> PLDL2KEEP, 00001 ==> PLDL2STRM, |
| 1514 | 00100 ==> PLDL3KEEP, 00101 ==> PLDL3STRM, |
| 1515 | 10000 ==> PSTL1KEEP, 10001 ==> PSTL1STRM, |
| 1516 | 10010 ==> PSTL2KEEP, 10001 ==> PSTL2STRM, |
| 1517 | 10100 ==> PSTL3KEEP, 10101 ==> PSTL3STRM, |
| 1518 | ow ==> UNALLOC |
| 1519 | PrfOp prfop = prfop (instr, 4, 0); |
| 1520 | uint64_t address = aarch64_get_PC (cpu) + offset. */ |
| 1521 | |
| 1522 | /* TODO : implement this */ |
| 1523 | } |
| 1524 | |
| 1525 | /* Load-store exclusive. */ |
| 1526 | |
| 1527 | static void |
| 1528 | ldxr (sim_cpu *cpu) |
| 1529 | { |
| 1530 | unsigned rn = INSTR (9, 5); |
| 1531 | unsigned rt = INSTR (4, 0); |
| 1532 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1533 | int size = INSTR (31, 30); |
| 1534 | /* int ordered = INSTR (15, 15); */ |
| 1535 | /* int exclusive = ! INSTR (23, 23); */ |
| 1536 | |
| 1537 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1538 | switch (size) |
| 1539 | { |
| 1540 | case 0: |
| 1541 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u8 (cpu, address)); |
| 1542 | break; |
| 1543 | case 1: |
| 1544 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u16 (cpu, address)); |
| 1545 | break; |
| 1546 | case 2: |
| 1547 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u32 (cpu, address)); |
| 1548 | break; |
| 1549 | case 3: |
| 1550 | aarch64_set_reg_u64 (cpu, rt, NO_SP, aarch64_get_mem_u64 (cpu, address)); |
| 1551 | break; |
| 1552 | } |
| 1553 | } |
| 1554 | |
| 1555 | static void |
| 1556 | stxr (sim_cpu *cpu) |
| 1557 | { |
| 1558 | unsigned rn = INSTR (9, 5); |
| 1559 | unsigned rt = INSTR (4, 0); |
| 1560 | unsigned rs = INSTR (20, 16); |
| 1561 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1562 | int size = INSTR (31, 30); |
| 1563 | uint64_t data = aarch64_get_reg_u64 (cpu, rt, NO_SP); |
| 1564 | |
| 1565 | switch (size) |
| 1566 | { |
| 1567 | case 0: aarch64_set_mem_u8 (cpu, address, data); break; |
| 1568 | case 1: aarch64_set_mem_u16 (cpu, address, data); break; |
| 1569 | case 2: aarch64_set_mem_u32 (cpu, address, data); break; |
| 1570 | case 3: aarch64_set_mem_u64 (cpu, address, data); break; |
| 1571 | } |
| 1572 | |
| 1573 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1574 | aarch64_set_reg_u64 (cpu, rs, NO_SP, 0); /* Always exclusive... */ |
| 1575 | } |
| 1576 | |
| 1577 | static void |
| 1578 | dexLoadLiteral (sim_cpu *cpu) |
| 1579 | { |
| 1580 | /* instr[29,27] == 011 |
| 1581 | instr[25,24] == 00 |
| 1582 | instr[31,30:26] = opc: 000 ==> LDRW, 001 ==> FLDRS |
| 1583 | 010 ==> LDRX, 011 ==> FLDRD |
| 1584 | 100 ==> LDRSW, 101 ==> FLDRQ |
| 1585 | 110 ==> PRFM, 111 ==> UNALLOC |
| 1586 | instr[26] ==> V : 0 ==> GReg, 1 ==> FReg |
| 1587 | instr[23, 5] == simm19 */ |
| 1588 | |
| 1589 | /* unsigned rt = INSTR (4, 0); */ |
| 1590 | uint32_t dispatch = (INSTR (31, 30) << 1) | INSTR (26, 26); |
| 1591 | int32_t imm = simm32 (aarch64_get_instr (cpu), 23, 5); |
| 1592 | |
| 1593 | switch (dispatch) |
| 1594 | { |
| 1595 | case 0: ldr32_pcrel (cpu, imm); break; |
| 1596 | case 1: fldrs_pcrel (cpu, imm); break; |
| 1597 | case 2: ldr_pcrel (cpu, imm); break; |
| 1598 | case 3: fldrd_pcrel (cpu, imm); break; |
| 1599 | case 4: ldrsw_pcrel (cpu, imm); break; |
| 1600 | case 5: fldrq_pcrel (cpu, imm); break; |
| 1601 | case 6: prfm_pcrel (cpu, imm); break; |
| 1602 | case 7: |
| 1603 | default: |
| 1604 | HALT_UNALLOC; |
| 1605 | } |
| 1606 | } |
| 1607 | |
| 1608 | /* Immediate arithmetic |
| 1609 | The aimm argument is a 12 bit unsigned value or a 12 bit unsigned |
| 1610 | value left shifted by 12 bits (done at decode). |
| 1611 | |
| 1612 | N.B. the register args (dest, source) can normally be Xn or SP. |
| 1613 | the exception occurs for flag setting instructions which may |
| 1614 | only use Xn for the output (dest). */ |
| 1615 | |
| 1616 | /* 32 bit add immediate. */ |
| 1617 | static void |
| 1618 | add32 (sim_cpu *cpu, uint32_t aimm) |
| 1619 | { |
| 1620 | unsigned rn = INSTR (9, 5); |
| 1621 | unsigned rd = INSTR (4, 0); |
| 1622 | |
| 1623 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1624 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 1625 | aarch64_get_reg_u32 (cpu, rn, SP_OK) + aimm); |
| 1626 | } |
| 1627 | |
| 1628 | /* 64 bit add immediate. */ |
| 1629 | static void |
| 1630 | add64 (sim_cpu *cpu, uint32_t aimm) |
| 1631 | { |
| 1632 | unsigned rn = INSTR (9, 5); |
| 1633 | unsigned rd = INSTR (4, 0); |
| 1634 | |
| 1635 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1636 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 1637 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + aimm); |
| 1638 | } |
| 1639 | |
| 1640 | static void |
| 1641 | set_flags_for_add32 (sim_cpu *cpu, int32_t value1, int32_t value2) |
| 1642 | { |
| 1643 | int32_t result = value1 + value2; |
| 1644 | int64_t sresult = (int64_t) value1 + (int64_t) value2; |
| 1645 | uint64_t uresult = (uint64_t)(uint32_t) value1 |
| 1646 | + (uint64_t)(uint32_t) value2; |
| 1647 | uint32_t flags = 0; |
| 1648 | |
| 1649 | if (result == 0) |
| 1650 | flags |= Z; |
| 1651 | |
| 1652 | if (result & (1 << 31)) |
| 1653 | flags |= N; |
| 1654 | |
| 1655 | if (uresult != result) |
| 1656 | flags |= C; |
| 1657 | |
| 1658 | if (sresult != result) |
| 1659 | flags |= V; |
| 1660 | |
| 1661 | aarch64_set_CPSR (cpu, flags); |
| 1662 | } |
| 1663 | |
| 1664 | static void |
| 1665 | set_flags_for_add64 (sim_cpu *cpu, uint64_t value1, uint64_t value2) |
| 1666 | { |
| 1667 | int64_t sval1 = value1; |
| 1668 | int64_t sval2 = value2; |
| 1669 | uint64_t result = value1 + value2; |
| 1670 | int64_t sresult = sval1 + sval2; |
| 1671 | uint32_t flags = 0; |
| 1672 | |
| 1673 | if (result == 0) |
| 1674 | flags |= Z; |
| 1675 | |
| 1676 | if (result & (1ULL << 63)) |
| 1677 | flags |= N; |
| 1678 | |
| 1679 | if (sval1 < 0) |
| 1680 | { |
| 1681 | if (sval2 < 0) |
| 1682 | { |
| 1683 | /* Negative plus a negative. Overflow happens if |
| 1684 | the result is greater than either of the operands. */ |
| 1685 | if (sresult > sval1 || sresult > sval2) |
| 1686 | flags |= V; |
| 1687 | } |
| 1688 | /* else Negative plus a positive. Overflow cannot happen. */ |
| 1689 | } |
| 1690 | else /* value1 is +ve. */ |
| 1691 | { |
| 1692 | if (sval2 < 0) |
| 1693 | { |
| 1694 | /* Overflow can only occur if we computed "0 - MININT". */ |
| 1695 | if (sval1 == 0 && sval2 == (1LL << 63)) |
| 1696 | flags |= V; |
| 1697 | } |
| 1698 | else |
| 1699 | { |
| 1700 | /* Postive plus positive - overflow has happened if the |
| 1701 | result is smaller than either of the operands. */ |
| 1702 | if (result < value1 || result < value2) |
| 1703 | flags |= V | C; |
| 1704 | } |
| 1705 | } |
| 1706 | |
| 1707 | aarch64_set_CPSR (cpu, flags); |
| 1708 | } |
| 1709 | |
| 1710 | #define NEG(a) (((a) & signbit) == signbit) |
| 1711 | #define POS(a) (((a) & signbit) == 0) |
| 1712 | |
| 1713 | static void |
| 1714 | set_flags_for_sub32 (sim_cpu *cpu, uint32_t value1, uint32_t value2) |
| 1715 | { |
| 1716 | uint32_t result = value1 - value2; |
| 1717 | uint32_t flags = 0; |
| 1718 | uint32_t signbit = 1U << 31; |
| 1719 | |
| 1720 | if (result == 0) |
| 1721 | flags |= Z; |
| 1722 | |
| 1723 | if (NEG (result)) |
| 1724 | flags |= N; |
| 1725 | |
| 1726 | if ( (NEG (value1) && POS (value2)) |
| 1727 | || (NEG (value1) && POS (result)) |
| 1728 | || (POS (value2) && POS (result))) |
| 1729 | flags |= C; |
| 1730 | |
| 1731 | if ( (NEG (value1) && POS (value2) && POS (result)) |
| 1732 | || (POS (value1) && NEG (value2) && NEG (result))) |
| 1733 | flags |= V; |
| 1734 | |
| 1735 | aarch64_set_CPSR (cpu, flags); |
| 1736 | } |
| 1737 | |
| 1738 | static void |
| 1739 | set_flags_for_sub64 (sim_cpu *cpu, uint64_t value1, uint64_t value2) |
| 1740 | { |
| 1741 | uint64_t result = value1 - value2; |
| 1742 | uint32_t flags = 0; |
| 1743 | uint64_t signbit = 1ULL << 63; |
| 1744 | |
| 1745 | if (result == 0) |
| 1746 | flags |= Z; |
| 1747 | |
| 1748 | if (NEG (result)) |
| 1749 | flags |= N; |
| 1750 | |
| 1751 | if ( (NEG (value1) && POS (value2)) |
| 1752 | || (NEG (value1) && POS (result)) |
| 1753 | || (POS (value2) && POS (result))) |
| 1754 | flags |= C; |
| 1755 | |
| 1756 | if ( (NEG (value1) && POS (value2) && POS (result)) |
| 1757 | || (POS (value1) && NEG (value2) && NEG (result))) |
| 1758 | flags |= V; |
| 1759 | |
| 1760 | aarch64_set_CPSR (cpu, flags); |
| 1761 | } |
| 1762 | |
| 1763 | static void |
| 1764 | set_flags_for_binop32 (sim_cpu *cpu, uint32_t result) |
| 1765 | { |
| 1766 | uint32_t flags = 0; |
| 1767 | |
| 1768 | if (result == 0) |
| 1769 | flags |= Z; |
| 1770 | else |
| 1771 | flags &= ~ Z; |
| 1772 | |
| 1773 | if (result & (1 << 31)) |
| 1774 | flags |= N; |
| 1775 | else |
| 1776 | flags &= ~ N; |
| 1777 | |
| 1778 | aarch64_set_CPSR (cpu, flags); |
| 1779 | } |
| 1780 | |
| 1781 | static void |
| 1782 | set_flags_for_binop64 (sim_cpu *cpu, uint64_t result) |
| 1783 | { |
| 1784 | uint32_t flags = 0; |
| 1785 | |
| 1786 | if (result == 0) |
| 1787 | flags |= Z; |
| 1788 | else |
| 1789 | flags &= ~ Z; |
| 1790 | |
| 1791 | if (result & (1ULL << 63)) |
| 1792 | flags |= N; |
| 1793 | else |
| 1794 | flags &= ~ N; |
| 1795 | |
| 1796 | aarch64_set_CPSR (cpu, flags); |
| 1797 | } |
| 1798 | |
| 1799 | /* 32 bit add immediate set flags. */ |
| 1800 | static void |
| 1801 | adds32 (sim_cpu *cpu, uint32_t aimm) |
| 1802 | { |
| 1803 | unsigned rn = INSTR (9, 5); |
| 1804 | unsigned rd = INSTR (4, 0); |
| 1805 | /* TODO : do we need to worry about signs here? */ |
| 1806 | int32_t value1 = aarch64_get_reg_s32 (cpu, rn, SP_OK); |
| 1807 | |
| 1808 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1809 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + aimm); |
| 1810 | set_flags_for_add32 (cpu, value1, aimm); |
| 1811 | } |
| 1812 | |
| 1813 | /* 64 bit add immediate set flags. */ |
| 1814 | static void |
| 1815 | adds64 (sim_cpu *cpu, uint32_t aimm) |
| 1816 | { |
| 1817 | unsigned rn = INSTR (9, 5); |
| 1818 | unsigned rd = INSTR (4, 0); |
| 1819 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1820 | uint64_t value2 = aimm; |
| 1821 | |
| 1822 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1823 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2); |
| 1824 | set_flags_for_add64 (cpu, value1, value2); |
| 1825 | } |
| 1826 | |
| 1827 | /* 32 bit sub immediate. */ |
| 1828 | static void |
| 1829 | sub32 (sim_cpu *cpu, uint32_t aimm) |
| 1830 | { |
| 1831 | unsigned rn = INSTR (9, 5); |
| 1832 | unsigned rd = INSTR (4, 0); |
| 1833 | |
| 1834 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1835 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 1836 | aarch64_get_reg_u32 (cpu, rn, SP_OK) - aimm); |
| 1837 | } |
| 1838 | |
| 1839 | /* 64 bit sub immediate. */ |
| 1840 | static void |
| 1841 | sub64 (sim_cpu *cpu, uint32_t aimm) |
| 1842 | { |
| 1843 | unsigned rn = INSTR (9, 5); |
| 1844 | unsigned rd = INSTR (4, 0); |
| 1845 | |
| 1846 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1847 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 1848 | aarch64_get_reg_u64 (cpu, rn, SP_OK) - aimm); |
| 1849 | } |
| 1850 | |
| 1851 | /* 32 bit sub immediate set flags. */ |
| 1852 | static void |
| 1853 | subs32 (sim_cpu *cpu, uint32_t aimm) |
| 1854 | { |
| 1855 | unsigned rn = INSTR (9, 5); |
| 1856 | unsigned rd = INSTR (4, 0); |
| 1857 | uint32_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1858 | uint32_t value2 = aimm; |
| 1859 | |
| 1860 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1861 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2); |
| 1862 | set_flags_for_sub32 (cpu, value1, value2); |
| 1863 | } |
| 1864 | |
| 1865 | /* 64 bit sub immediate set flags. */ |
| 1866 | static void |
| 1867 | subs64 (sim_cpu *cpu, uint32_t aimm) |
| 1868 | { |
| 1869 | unsigned rn = INSTR (9, 5); |
| 1870 | unsigned rd = INSTR (4, 0); |
| 1871 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 1872 | uint32_t value2 = aimm; |
| 1873 | |
| 1874 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1875 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2); |
| 1876 | set_flags_for_sub64 (cpu, value1, value2); |
| 1877 | } |
| 1878 | |
| 1879 | /* Data Processing Register. */ |
| 1880 | |
| 1881 | /* First two helpers to perform the shift operations. */ |
| 1882 | |
| 1883 | static inline uint32_t |
| 1884 | shifted32 (uint32_t value, Shift shift, uint32_t count) |
| 1885 | { |
| 1886 | switch (shift) |
| 1887 | { |
| 1888 | default: |
| 1889 | case LSL: |
| 1890 | return (value << count); |
| 1891 | case LSR: |
| 1892 | return (value >> count); |
| 1893 | case ASR: |
| 1894 | { |
| 1895 | int32_t svalue = value; |
| 1896 | return (svalue >> count); |
| 1897 | } |
| 1898 | case ROR: |
| 1899 | { |
| 1900 | uint32_t top = value >> count; |
| 1901 | uint32_t bottom = value << (32 - count); |
| 1902 | return (bottom | top); |
| 1903 | } |
| 1904 | } |
| 1905 | } |
| 1906 | |
| 1907 | static inline uint64_t |
| 1908 | shifted64 (uint64_t value, Shift shift, uint32_t count) |
| 1909 | { |
| 1910 | switch (shift) |
| 1911 | { |
| 1912 | default: |
| 1913 | case LSL: |
| 1914 | return (value << count); |
| 1915 | case LSR: |
| 1916 | return (value >> count); |
| 1917 | case ASR: |
| 1918 | { |
| 1919 | int64_t svalue = value; |
| 1920 | return (svalue >> count); |
| 1921 | } |
| 1922 | case ROR: |
| 1923 | { |
| 1924 | uint64_t top = value >> count; |
| 1925 | uint64_t bottom = value << (64 - count); |
| 1926 | return (bottom | top); |
| 1927 | } |
| 1928 | } |
| 1929 | } |
| 1930 | |
| 1931 | /* Arithmetic shifted register. |
| 1932 | These allow an optional LSL, ASR or LSR to the second source |
| 1933 | register with a count up to the register bit count. |
| 1934 | |
| 1935 | N.B register args may not be SP. */ |
| 1936 | |
| 1937 | /* 32 bit ADD shifted register. */ |
| 1938 | static void |
| 1939 | add32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 1940 | { |
| 1941 | unsigned rm = INSTR (20, 16); |
| 1942 | unsigned rn = INSTR (9, 5); |
| 1943 | unsigned rd = INSTR (4, 0); |
| 1944 | |
| 1945 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1946 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 1947 | aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 1948 | + shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 1949 | shift, count)); |
| 1950 | } |
| 1951 | |
| 1952 | /* 64 bit ADD shifted register. */ |
| 1953 | static void |
| 1954 | add64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 1955 | { |
| 1956 | unsigned rm = INSTR (20, 16); |
| 1957 | unsigned rn = INSTR (9, 5); |
| 1958 | unsigned rd = INSTR (4, 0); |
| 1959 | |
| 1960 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1961 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 1962 | aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 1963 | + shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), |
| 1964 | shift, count)); |
| 1965 | } |
| 1966 | |
| 1967 | /* 32 bit ADD shifted register setting flags. */ |
| 1968 | static void |
| 1969 | adds32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 1970 | { |
| 1971 | unsigned rm = INSTR (20, 16); |
| 1972 | unsigned rn = INSTR (9, 5); |
| 1973 | unsigned rd = INSTR (4, 0); |
| 1974 | |
| 1975 | uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 1976 | uint32_t value2 = shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 1977 | shift, count); |
| 1978 | |
| 1979 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1980 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2); |
| 1981 | set_flags_for_add32 (cpu, value1, value2); |
| 1982 | } |
| 1983 | |
| 1984 | /* 64 bit ADD shifted register setting flags. */ |
| 1985 | static void |
| 1986 | adds64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 1987 | { |
| 1988 | unsigned rm = INSTR (20, 16); |
| 1989 | unsigned rn = INSTR (9, 5); |
| 1990 | unsigned rd = INSTR (4, 0); |
| 1991 | |
| 1992 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 1993 | uint64_t value2 = shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), |
| 1994 | shift, count); |
| 1995 | |
| 1996 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 1997 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2); |
| 1998 | set_flags_for_add64 (cpu, value1, value2); |
| 1999 | } |
| 2000 | |
| 2001 | /* 32 bit SUB shifted register. */ |
| 2002 | static void |
| 2003 | sub32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 2004 | { |
| 2005 | unsigned rm = INSTR (20, 16); |
| 2006 | unsigned rn = INSTR (9, 5); |
| 2007 | unsigned rd = INSTR (4, 0); |
| 2008 | |
| 2009 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2010 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 2011 | aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 2012 | - shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 2013 | shift, count)); |
| 2014 | } |
| 2015 | |
| 2016 | /* 64 bit SUB shifted register. */ |
| 2017 | static void |
| 2018 | sub64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 2019 | { |
| 2020 | unsigned rm = INSTR (20, 16); |
| 2021 | unsigned rn = INSTR (9, 5); |
| 2022 | unsigned rd = INSTR (4, 0); |
| 2023 | |
| 2024 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2025 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 2026 | aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 2027 | - shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), |
| 2028 | shift, count)); |
| 2029 | } |
| 2030 | |
| 2031 | /* 32 bit SUB shifted register setting flags. */ |
| 2032 | static void |
| 2033 | subs32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 2034 | { |
| 2035 | unsigned rm = INSTR (20, 16); |
| 2036 | unsigned rn = INSTR (9, 5); |
| 2037 | unsigned rd = INSTR (4, 0); |
| 2038 | |
| 2039 | uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 2040 | uint32_t value2 = shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 2041 | shift, count); |
| 2042 | |
| 2043 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2044 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2); |
| 2045 | set_flags_for_sub32 (cpu, value1, value2); |
| 2046 | } |
| 2047 | |
| 2048 | /* 64 bit SUB shifted register setting flags. */ |
| 2049 | static void |
| 2050 | subs64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 2051 | { |
| 2052 | unsigned rm = INSTR (20, 16); |
| 2053 | unsigned rn = INSTR (9, 5); |
| 2054 | unsigned rd = INSTR (4, 0); |
| 2055 | |
| 2056 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 2057 | uint64_t value2 = shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), |
| 2058 | shift, count); |
| 2059 | |
| 2060 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2061 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2); |
| 2062 | set_flags_for_sub64 (cpu, value1, value2); |
| 2063 | } |
| 2064 | |
| 2065 | /* First a couple more helpers to fetch the |
| 2066 | relevant source register element either |
| 2067 | sign or zero extended as required by the |
| 2068 | extension value. */ |
| 2069 | |
| 2070 | static uint32_t |
| 2071 | extreg32 (sim_cpu *cpu, unsigned int lo, Extension extension) |
| 2072 | { |
| 2073 | switch (extension) |
| 2074 | { |
| 2075 | case UXTB: return aarch64_get_reg_u8 (cpu, lo, NO_SP); |
| 2076 | case UXTH: return aarch64_get_reg_u16 (cpu, lo, NO_SP); |
| 2077 | case UXTW: /* Fall through. */ |
| 2078 | case UXTX: return aarch64_get_reg_u32 (cpu, lo, NO_SP); |
| 2079 | case SXTB: return aarch64_get_reg_s8 (cpu, lo, NO_SP); |
| 2080 | case SXTH: return aarch64_get_reg_s16 (cpu, lo, NO_SP); |
| 2081 | case SXTW: /* Fall through. */ |
| 2082 | case SXTX: /* Fall through. */ |
| 2083 | default: return aarch64_get_reg_s32 (cpu, lo, NO_SP); |
| 2084 | } |
| 2085 | } |
| 2086 | |
| 2087 | static uint64_t |
| 2088 | extreg64 (sim_cpu *cpu, unsigned int lo, Extension extension) |
| 2089 | { |
| 2090 | switch (extension) |
| 2091 | { |
| 2092 | case UXTB: return aarch64_get_reg_u8 (cpu, lo, NO_SP); |
| 2093 | case UXTH: return aarch64_get_reg_u16 (cpu, lo, NO_SP); |
| 2094 | case UXTW: return aarch64_get_reg_u32 (cpu, lo, NO_SP); |
| 2095 | case UXTX: return aarch64_get_reg_u64 (cpu, lo, NO_SP); |
| 2096 | case SXTB: return aarch64_get_reg_s8 (cpu, lo, NO_SP); |
| 2097 | case SXTH: return aarch64_get_reg_s16 (cpu, lo, NO_SP); |
| 2098 | case SXTW: return aarch64_get_reg_s32 (cpu, lo, NO_SP); |
| 2099 | case SXTX: |
| 2100 | default: return aarch64_get_reg_s64 (cpu, lo, NO_SP); |
| 2101 | } |
| 2102 | } |
| 2103 | |
| 2104 | /* Arithmetic extending register |
| 2105 | These allow an optional sign extension of some portion of the |
| 2106 | second source register followed by an optional left shift of |
| 2107 | between 1 and 4 bits (i.e. a shift of 0-4 bits???) |
| 2108 | |
| 2109 | N.B output (dest) and first input arg (source) may normally be Xn |
| 2110 | or SP. However, for flag setting operations dest can only be |
| 2111 | Xn. Second input registers are always Xn. */ |
| 2112 | |
| 2113 | /* 32 bit ADD extending register. */ |
| 2114 | static void |
| 2115 | add32_ext (sim_cpu *cpu, Extension extension, uint32_t shift) |
| 2116 | { |
| 2117 | unsigned rm = INSTR (20, 16); |
| 2118 | unsigned rn = INSTR (9, 5); |
| 2119 | unsigned rd = INSTR (4, 0); |
| 2120 | |
| 2121 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2122 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 2123 | aarch64_get_reg_u32 (cpu, rn, SP_OK) |
| 2124 | + (extreg32 (cpu, rm, extension) << shift)); |
| 2125 | } |
| 2126 | |
| 2127 | /* 64 bit ADD extending register. |
| 2128 | N.B. This subsumes the case with 64 bit source2 and UXTX #n or LSL #0. */ |
| 2129 | static void |
| 2130 | add64_ext (sim_cpu *cpu, Extension extension, uint32_t shift) |
| 2131 | { |
| 2132 | unsigned rm = INSTR (20, 16); |
| 2133 | unsigned rn = INSTR (9, 5); |
| 2134 | unsigned rd = INSTR (4, 0); |
| 2135 | |
| 2136 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2137 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 2138 | aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 2139 | + (extreg64 (cpu, rm, extension) << shift)); |
| 2140 | } |
| 2141 | |
| 2142 | /* 32 bit ADD extending register setting flags. */ |
| 2143 | static void |
| 2144 | adds32_ext (sim_cpu *cpu, Extension extension, uint32_t shift) |
| 2145 | { |
| 2146 | unsigned rm = INSTR (20, 16); |
| 2147 | unsigned rn = INSTR (9, 5); |
| 2148 | unsigned rd = INSTR (4, 0); |
| 2149 | |
| 2150 | uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, SP_OK); |
| 2151 | uint32_t value2 = extreg32 (cpu, rm, extension) << shift; |
| 2152 | |
| 2153 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2154 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2); |
| 2155 | set_flags_for_add32 (cpu, value1, value2); |
| 2156 | } |
| 2157 | |
| 2158 | /* 64 bit ADD extending register setting flags */ |
| 2159 | /* N.B. this subsumes the case with 64 bit source2 and UXTX #n or LSL #0 */ |
| 2160 | static void |
| 2161 | adds64_ext (sim_cpu *cpu, Extension extension, uint32_t shift) |
| 2162 | { |
| 2163 | unsigned rm = INSTR (20, 16); |
| 2164 | unsigned rn = INSTR (9, 5); |
| 2165 | unsigned rd = INSTR (4, 0); |
| 2166 | |
| 2167 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 2168 | uint64_t value2 = extreg64 (cpu, rm, extension) << shift; |
| 2169 | |
| 2170 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2171 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2); |
| 2172 | set_flags_for_add64 (cpu, value1, value2); |
| 2173 | } |
| 2174 | |
| 2175 | /* 32 bit SUB extending register. */ |
| 2176 | static void |
| 2177 | sub32_ext (sim_cpu *cpu, Extension extension, uint32_t shift) |
| 2178 | { |
| 2179 | unsigned rm = INSTR (20, 16); |
| 2180 | unsigned rn = INSTR (9, 5); |
| 2181 | unsigned rd = INSTR (4, 0); |
| 2182 | |
| 2183 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2184 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 2185 | aarch64_get_reg_u32 (cpu, rn, SP_OK) |
| 2186 | - (extreg32 (cpu, rm, extension) << shift)); |
| 2187 | } |
| 2188 | |
| 2189 | /* 64 bit SUB extending register. */ |
| 2190 | /* N.B. this subsumes the case with 64 bit source2 and UXTX #n or LSL #0. */ |
| 2191 | static void |
| 2192 | sub64_ext (sim_cpu *cpu, Extension extension, uint32_t shift) |
| 2193 | { |
| 2194 | unsigned rm = INSTR (20, 16); |
| 2195 | unsigned rn = INSTR (9, 5); |
| 2196 | unsigned rd = INSTR (4, 0); |
| 2197 | |
| 2198 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2199 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 2200 | aarch64_get_reg_u64 (cpu, rn, SP_OK) |
| 2201 | - (extreg64 (cpu, rm, extension) << shift)); |
| 2202 | } |
| 2203 | |
| 2204 | /* 32 bit SUB extending register setting flags. */ |
| 2205 | static void |
| 2206 | subs32_ext (sim_cpu *cpu, Extension extension, uint32_t shift) |
| 2207 | { |
| 2208 | unsigned rm = INSTR (20, 16); |
| 2209 | unsigned rn = INSTR (9, 5); |
| 2210 | unsigned rd = INSTR (4, 0); |
| 2211 | |
| 2212 | uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, SP_OK); |
| 2213 | uint32_t value2 = extreg32 (cpu, rm, extension) << shift; |
| 2214 | |
| 2215 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2216 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2); |
| 2217 | set_flags_for_sub32 (cpu, value1, value2); |
| 2218 | } |
| 2219 | |
| 2220 | /* 64 bit SUB extending register setting flags */ |
| 2221 | /* N.B. this subsumes the case with 64 bit source2 and UXTX #n or LSL #0 */ |
| 2222 | static void |
| 2223 | subs64_ext (sim_cpu *cpu, Extension extension, uint32_t shift) |
| 2224 | { |
| 2225 | unsigned rm = INSTR (20, 16); |
| 2226 | unsigned rn = INSTR (9, 5); |
| 2227 | unsigned rd = INSTR (4, 0); |
| 2228 | |
| 2229 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 2230 | uint64_t value2 = extreg64 (cpu, rm, extension) << shift; |
| 2231 | |
| 2232 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2233 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 - value2); |
| 2234 | set_flags_for_sub64 (cpu, value1, value2); |
| 2235 | } |
| 2236 | |
| 2237 | static void |
| 2238 | dexAddSubtractImmediate (sim_cpu *cpu) |
| 2239 | { |
| 2240 | /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 2241 | instr[30] = op : 0 ==> ADD, 1 ==> SUB |
| 2242 | instr[29] = set : 0 ==> no flags, 1 ==> set flags |
| 2243 | instr[28,24] = 10001 |
| 2244 | instr[23,22] = shift : 00 == LSL#0, 01 = LSL#12 1x = UNALLOC |
| 2245 | instr[21,10] = uimm12 |
| 2246 | instr[9,5] = Rn |
| 2247 | instr[4,0] = Rd */ |
| 2248 | |
| 2249 | /* N.B. the shift is applied at decode before calling the add/sub routine. */ |
| 2250 | uint32_t shift = INSTR (23, 22); |
| 2251 | uint32_t imm = INSTR (21, 10); |
| 2252 | uint32_t dispatch = INSTR (31, 29); |
| 2253 | |
| 2254 | NYI_assert (28, 24, 0x11); |
| 2255 | |
| 2256 | if (shift > 1) |
| 2257 | HALT_UNALLOC; |
| 2258 | |
| 2259 | if (shift) |
| 2260 | imm <<= 12; |
| 2261 | |
| 2262 | switch (dispatch) |
| 2263 | { |
| 2264 | case 0: add32 (cpu, imm); break; |
| 2265 | case 1: adds32 (cpu, imm); break; |
| 2266 | case 2: sub32 (cpu, imm); break; |
| 2267 | case 3: subs32 (cpu, imm); break; |
| 2268 | case 4: add64 (cpu, imm); break; |
| 2269 | case 5: adds64 (cpu, imm); break; |
| 2270 | case 6: sub64 (cpu, imm); break; |
| 2271 | case 7: subs64 (cpu, imm); break; |
| 2272 | } |
| 2273 | } |
| 2274 | |
| 2275 | static void |
| 2276 | dexAddSubtractShiftedRegister (sim_cpu *cpu) |
| 2277 | { |
| 2278 | /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 2279 | instr[30,29] = op : 00 ==> ADD, 01 ==> ADDS, 10 ==> SUB, 11 ==> SUBS |
| 2280 | instr[28,24] = 01011 |
| 2281 | instr[23,22] = shift : 0 ==> LSL, 1 ==> LSR, 2 ==> ASR, 3 ==> UNALLOC |
| 2282 | instr[21] = 0 |
| 2283 | instr[20,16] = Rm |
| 2284 | instr[15,10] = count : must be 0xxxxx for 32 bit |
| 2285 | instr[9,5] = Rn |
| 2286 | instr[4,0] = Rd */ |
| 2287 | |
| 2288 | uint32_t size = INSTR (31, 31); |
| 2289 | uint32_t count = INSTR (15, 10); |
| 2290 | Shift shiftType = INSTR (23, 22); |
| 2291 | |
| 2292 | NYI_assert (28, 24, 0x0B); |
| 2293 | NYI_assert (21, 21, 0); |
| 2294 | |
| 2295 | /* Shift encoded as ROR is unallocated. */ |
| 2296 | if (shiftType == ROR) |
| 2297 | HALT_UNALLOC; |
| 2298 | |
| 2299 | /* 32 bit operations must have count[5] = 0 |
| 2300 | or else we have an UNALLOC. */ |
| 2301 | if (size == 0 && uimm (count, 5, 5)) |
| 2302 | HALT_UNALLOC; |
| 2303 | |
| 2304 | /* Dispatch on size:op i.e instr [31,29]. */ |
| 2305 | switch (INSTR (31, 29)) |
| 2306 | { |
| 2307 | case 0: add32_shift (cpu, shiftType, count); break; |
| 2308 | case 1: adds32_shift (cpu, shiftType, count); break; |
| 2309 | case 2: sub32_shift (cpu, shiftType, count); break; |
| 2310 | case 3: subs32_shift (cpu, shiftType, count); break; |
| 2311 | case 4: add64_shift (cpu, shiftType, count); break; |
| 2312 | case 5: adds64_shift (cpu, shiftType, count); break; |
| 2313 | case 6: sub64_shift (cpu, shiftType, count); break; |
| 2314 | case 7: subs64_shift (cpu, shiftType, count); break; |
| 2315 | } |
| 2316 | } |
| 2317 | |
| 2318 | static void |
| 2319 | dexAddSubtractExtendedRegister (sim_cpu *cpu) |
| 2320 | { |
| 2321 | /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 2322 | instr[30] = op : 0 ==> ADD, 1 ==> SUB |
| 2323 | instr[29] = set? : 0 ==> no flags, 1 ==> set flags |
| 2324 | instr[28,24] = 01011 |
| 2325 | instr[23,22] = opt : 0 ==> ok, 1,2,3 ==> UNALLOC |
| 2326 | instr[21] = 1 |
| 2327 | instr[20,16] = Rm |
| 2328 | instr[15,13] = option : 000 ==> UXTB, 001 ==> UXTH, |
| 2329 | 000 ==> LSL|UXTW, 001 ==> UXTZ, |
| 2330 | 000 ==> SXTB, 001 ==> SXTH, |
| 2331 | 000 ==> SXTW, 001 ==> SXTX, |
| 2332 | instr[12,10] = shift : 0,1,2,3,4 ==> ok, 5,6,7 ==> UNALLOC |
| 2333 | instr[9,5] = Rn |
| 2334 | instr[4,0] = Rd */ |
| 2335 | |
| 2336 | Extension extensionType = INSTR (15, 13); |
| 2337 | uint32_t shift = INSTR (12, 10); |
| 2338 | |
| 2339 | NYI_assert (28, 24, 0x0B); |
| 2340 | NYI_assert (21, 21, 1); |
| 2341 | |
| 2342 | /* Shift may not exceed 4. */ |
| 2343 | if (shift > 4) |
| 2344 | HALT_UNALLOC; |
| 2345 | |
| 2346 | /* Dispatch on size:op:set?. */ |
| 2347 | switch (INSTR (31, 29)) |
| 2348 | { |
| 2349 | case 0: add32_ext (cpu, extensionType, shift); break; |
| 2350 | case 1: adds32_ext (cpu, extensionType, shift); break; |
| 2351 | case 2: sub32_ext (cpu, extensionType, shift); break; |
| 2352 | case 3: subs32_ext (cpu, extensionType, shift); break; |
| 2353 | case 4: add64_ext (cpu, extensionType, shift); break; |
| 2354 | case 5: adds64_ext (cpu, extensionType, shift); break; |
| 2355 | case 6: sub64_ext (cpu, extensionType, shift); break; |
| 2356 | case 7: subs64_ext (cpu, extensionType, shift); break; |
| 2357 | } |
| 2358 | } |
| 2359 | |
| 2360 | /* Conditional data processing |
| 2361 | Condition register is implicit 3rd source. */ |
| 2362 | |
| 2363 | /* 32 bit add with carry. */ |
| 2364 | /* N.B register args may not be SP. */ |
| 2365 | |
| 2366 | static void |
| 2367 | adc32 (sim_cpu *cpu) |
| 2368 | { |
| 2369 | unsigned rm = INSTR (20, 16); |
| 2370 | unsigned rn = INSTR (9, 5); |
| 2371 | unsigned rd = INSTR (4, 0); |
| 2372 | |
| 2373 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2374 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 2375 | aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 2376 | + aarch64_get_reg_u32 (cpu, rm, NO_SP) |
| 2377 | + IS_SET (C)); |
| 2378 | } |
| 2379 | |
| 2380 | /* 64 bit add with carry */ |
| 2381 | static void |
| 2382 | adc64 (sim_cpu *cpu) |
| 2383 | { |
| 2384 | unsigned rm = INSTR (20, 16); |
| 2385 | unsigned rn = INSTR (9, 5); |
| 2386 | unsigned rd = INSTR (4, 0); |
| 2387 | |
| 2388 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2389 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 2390 | aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 2391 | + aarch64_get_reg_u64 (cpu, rm, NO_SP) |
| 2392 | + IS_SET (C)); |
| 2393 | } |
| 2394 | |
| 2395 | /* 32 bit add with carry setting flags. */ |
| 2396 | static void |
| 2397 | adcs32 (sim_cpu *cpu) |
| 2398 | { |
| 2399 | unsigned rm = INSTR (20, 16); |
| 2400 | unsigned rn = INSTR (9, 5); |
| 2401 | unsigned rd = INSTR (4, 0); |
| 2402 | |
| 2403 | uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 2404 | uint32_t value2 = aarch64_get_reg_u32 (cpu, rm, NO_SP); |
| 2405 | uint32_t carry = IS_SET (C); |
| 2406 | |
| 2407 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2408 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2 + carry); |
| 2409 | set_flags_for_add32 (cpu, value1, value2 + carry); |
| 2410 | } |
| 2411 | |
| 2412 | /* 64 bit add with carry setting flags. */ |
| 2413 | static void |
| 2414 | adcs64 (sim_cpu *cpu) |
| 2415 | { |
| 2416 | unsigned rm = INSTR (20, 16); |
| 2417 | unsigned rn = INSTR (9, 5); |
| 2418 | unsigned rd = INSTR (4, 0); |
| 2419 | |
| 2420 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 2421 | uint64_t value2 = aarch64_get_reg_u64 (cpu, rm, NO_SP); |
| 2422 | uint64_t carry = IS_SET (C); |
| 2423 | |
| 2424 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2425 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 + value2 + carry); |
| 2426 | set_flags_for_add64 (cpu, value1, value2 + carry); |
| 2427 | } |
| 2428 | |
| 2429 | /* 32 bit sub with carry. */ |
| 2430 | static void |
| 2431 | sbc32 (sim_cpu *cpu) |
| 2432 | { |
| 2433 | unsigned rm = INSTR (20, 16); |
| 2434 | unsigned rn = INSTR (9, 5); /* ngc iff rn == 31. */ |
| 2435 | unsigned rd = INSTR (4, 0); |
| 2436 | |
| 2437 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2438 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 2439 | aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 2440 | - aarch64_get_reg_u32 (cpu, rm, NO_SP) |
| 2441 | - 1 + IS_SET (C)); |
| 2442 | } |
| 2443 | |
| 2444 | /* 64 bit sub with carry */ |
| 2445 | static void |
| 2446 | sbc64 (sim_cpu *cpu) |
| 2447 | { |
| 2448 | unsigned rm = INSTR (20, 16); |
| 2449 | unsigned rn = INSTR (9, 5); |
| 2450 | unsigned rd = INSTR (4, 0); |
| 2451 | |
| 2452 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2453 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 2454 | aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 2455 | - aarch64_get_reg_u64 (cpu, rm, NO_SP) |
| 2456 | - 1 + IS_SET (C)); |
| 2457 | } |
| 2458 | |
| 2459 | /* 32 bit sub with carry setting flags */ |
| 2460 | static void |
| 2461 | sbcs32 (sim_cpu *cpu) |
| 2462 | { |
| 2463 | unsigned rm = INSTR (20, 16); |
| 2464 | unsigned rn = INSTR (9, 5); |
| 2465 | unsigned rd = INSTR (4, 0); |
| 2466 | |
| 2467 | uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 2468 | uint32_t value2 = aarch64_get_reg_u32 (cpu, rm, NO_SP); |
| 2469 | uint32_t carry = IS_SET (C); |
| 2470 | uint32_t result = value1 - value2 + 1 - carry; |
| 2471 | |
| 2472 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2473 | aarch64_set_reg_u64 (cpu, rd, NO_SP, result); |
| 2474 | set_flags_for_sub32 (cpu, value1, value2 + 1 - carry); |
| 2475 | } |
| 2476 | |
| 2477 | /* 64 bit sub with carry setting flags */ |
| 2478 | static void |
| 2479 | sbcs64 (sim_cpu *cpu) |
| 2480 | { |
| 2481 | unsigned rm = INSTR (20, 16); |
| 2482 | unsigned rn = INSTR (9, 5); |
| 2483 | unsigned rd = INSTR (4, 0); |
| 2484 | |
| 2485 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 2486 | uint64_t value2 = aarch64_get_reg_u64 (cpu, rm, NO_SP); |
| 2487 | uint64_t carry = IS_SET (C); |
| 2488 | uint64_t result = value1 - value2 + 1 - carry; |
| 2489 | |
| 2490 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2491 | aarch64_set_reg_u64 (cpu, rd, NO_SP, result); |
| 2492 | set_flags_for_sub64 (cpu, value1, value2 + 1 - carry); |
| 2493 | } |
| 2494 | |
| 2495 | static void |
| 2496 | dexAddSubtractWithCarry (sim_cpu *cpu) |
| 2497 | { |
| 2498 | /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 2499 | instr[30] = op : 0 ==> ADC, 1 ==> SBC |
| 2500 | instr[29] = set? : 0 ==> no flags, 1 ==> set flags |
| 2501 | instr[28,21] = 1 1010 000 |
| 2502 | instr[20,16] = Rm |
| 2503 | instr[15,10] = op2 : 00000 ==> ok, ow ==> UNALLOC |
| 2504 | instr[9,5] = Rn |
| 2505 | instr[4,0] = Rd */ |
| 2506 | |
| 2507 | uint32_t op2 = INSTR (15, 10); |
| 2508 | |
| 2509 | NYI_assert (28, 21, 0xD0); |
| 2510 | |
| 2511 | if (op2 != 0) |
| 2512 | HALT_UNALLOC; |
| 2513 | |
| 2514 | /* Dispatch on size:op:set?. */ |
| 2515 | switch (INSTR (31, 29)) |
| 2516 | { |
| 2517 | case 0: adc32 (cpu); break; |
| 2518 | case 1: adcs32 (cpu); break; |
| 2519 | case 2: sbc32 (cpu); break; |
| 2520 | case 3: sbcs32 (cpu); break; |
| 2521 | case 4: adc64 (cpu); break; |
| 2522 | case 5: adcs64 (cpu); break; |
| 2523 | case 6: sbc64 (cpu); break; |
| 2524 | case 7: sbcs64 (cpu); break; |
| 2525 | } |
| 2526 | } |
| 2527 | |
| 2528 | static uint32_t |
| 2529 | testConditionCode (sim_cpu *cpu, CondCode cc) |
| 2530 | { |
| 2531 | /* This should be reduceable to branchless logic |
| 2532 | by some careful testing of bits in CC followed |
| 2533 | by the requisite masking and combining of bits |
| 2534 | from the flag register. |
| 2535 | |
| 2536 | For now we do it with a switch. */ |
| 2537 | int res; |
| 2538 | |
| 2539 | switch (cc) |
| 2540 | { |
| 2541 | case EQ: res = IS_SET (Z); break; |
| 2542 | case NE: res = IS_CLEAR (Z); break; |
| 2543 | case CS: res = IS_SET (C); break; |
| 2544 | case CC: res = IS_CLEAR (C); break; |
| 2545 | case MI: res = IS_SET (N); break; |
| 2546 | case PL: res = IS_CLEAR (N); break; |
| 2547 | case VS: res = IS_SET (V); break; |
| 2548 | case VC: res = IS_CLEAR (V); break; |
| 2549 | case HI: res = IS_SET (C) && IS_CLEAR (Z); break; |
| 2550 | case LS: res = IS_CLEAR (C) || IS_SET (Z); break; |
| 2551 | case GE: res = IS_SET (N) == IS_SET (V); break; |
| 2552 | case LT: res = IS_SET (N) != IS_SET (V); break; |
| 2553 | case GT: res = IS_CLEAR (Z) && (IS_SET (N) == IS_SET (V)); break; |
| 2554 | case LE: res = IS_SET (Z) || (IS_SET (N) != IS_SET (V)); break; |
| 2555 | case AL: |
| 2556 | case NV: |
| 2557 | default: |
| 2558 | res = 1; |
| 2559 | break; |
| 2560 | } |
| 2561 | return res; |
| 2562 | } |
| 2563 | |
| 2564 | static void |
| 2565 | CondCompare (sim_cpu *cpu) /* aka: ccmp and ccmn */ |
| 2566 | { |
| 2567 | /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 2568 | instr[30] = compare with positive (1) or negative value (0) |
| 2569 | instr[29,21] = 1 1101 0010 |
| 2570 | instr[20,16] = Rm or const |
| 2571 | instr[15,12] = cond |
| 2572 | instr[11] = compare reg (0) or const (1) |
| 2573 | instr[10] = 0 |
| 2574 | instr[9,5] = Rn |
| 2575 | instr[4] = 0 |
| 2576 | instr[3,0] = value for CPSR bits if the comparison does not take place. */ |
| 2577 | signed int negate; |
| 2578 | unsigned rm; |
| 2579 | unsigned rn; |
| 2580 | |
| 2581 | NYI_assert (29, 21, 0x1d2); |
| 2582 | NYI_assert (10, 10, 0); |
| 2583 | NYI_assert (4, 4, 0); |
| 2584 | |
| 2585 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2586 | if (! testConditionCode (cpu, INSTR (15, 12))) |
| 2587 | { |
| 2588 | aarch64_set_CPSR (cpu, INSTR (3, 0)); |
| 2589 | return; |
| 2590 | } |
| 2591 | |
| 2592 | negate = INSTR (30, 30) ? 1 : -1; |
| 2593 | rm = INSTR (20, 16); |
| 2594 | rn = INSTR ( 9, 5); |
| 2595 | |
| 2596 | if (INSTR (31, 31)) |
| 2597 | { |
| 2598 | if (INSTR (11, 11)) |
| 2599 | set_flags_for_sub64 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK), |
| 2600 | negate * (uint64_t) rm); |
| 2601 | else |
| 2602 | set_flags_for_sub64 (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK), |
| 2603 | negate * aarch64_get_reg_u64 (cpu, rm, SP_OK)); |
| 2604 | } |
| 2605 | else |
| 2606 | { |
| 2607 | if (INSTR (11, 11)) |
| 2608 | set_flags_for_sub32 (cpu, aarch64_get_reg_u32 (cpu, rn, SP_OK), |
| 2609 | negate * rm); |
| 2610 | else |
| 2611 | set_flags_for_sub32 (cpu, aarch64_get_reg_u32 (cpu, rn, SP_OK), |
| 2612 | negate * aarch64_get_reg_u32 (cpu, rm, SP_OK)); |
| 2613 | } |
| 2614 | } |
| 2615 | |
| 2616 | static void |
| 2617 | do_vec_MOV_whole_vector (sim_cpu *cpu) |
| 2618 | { |
| 2619 | /* MOV Vd.T, Vs.T (alias for ORR Vd.T, Vn.T, Vm.T where Vn == Vm) |
| 2620 | |
| 2621 | instr[31] = 0 |
| 2622 | instr[30] = half(0)/full(1) |
| 2623 | instr[29,21] = 001110101 |
| 2624 | instr[20,16] = Vs |
| 2625 | instr[15,10] = 000111 |
| 2626 | instr[9,5] = Vs |
| 2627 | instr[4,0] = Vd */ |
| 2628 | |
| 2629 | unsigned vs = INSTR (9, 5); |
| 2630 | unsigned vd = INSTR (4, 0); |
| 2631 | |
| 2632 | NYI_assert (29, 21, 0x075); |
| 2633 | NYI_assert (15, 10, 0x07); |
| 2634 | |
| 2635 | if (INSTR (20, 16) != vs) |
| 2636 | HALT_NYI; |
| 2637 | |
| 2638 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2639 | if (INSTR (30, 30)) |
| 2640 | aarch64_set_vec_u64 (cpu, vd, 1, aarch64_get_vec_u64 (cpu, vs, 1)); |
| 2641 | |
| 2642 | aarch64_set_vec_u64 (cpu, vd, 0, aarch64_get_vec_u64 (cpu, vs, 0)); |
| 2643 | } |
| 2644 | |
| 2645 | static void |
| 2646 | do_vec_MOV_into_scalar (sim_cpu *cpu) |
| 2647 | { |
| 2648 | /* instr[31] = 0 |
| 2649 | instr[30] = word(0)/long(1) |
| 2650 | instr[29,21] = 00 1110 000 |
| 2651 | instr[20,18] = element size and index |
| 2652 | instr[17,10] = 00 0011 11 |
| 2653 | instr[9,5] = V source |
| 2654 | instr[4,0] = R dest */ |
| 2655 | |
| 2656 | unsigned vs = INSTR (9, 5); |
| 2657 | unsigned rd = INSTR (4, 0); |
| 2658 | |
| 2659 | NYI_assert (29, 21, 0x070); |
| 2660 | NYI_assert (17, 10, 0x0F); |
| 2661 | |
| 2662 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2663 | switch (INSTR (20, 18)) |
| 2664 | { |
| 2665 | case 0x2: |
| 2666 | aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_vec_u64 (cpu, vs, 0)); |
| 2667 | break; |
| 2668 | |
| 2669 | case 0x6: |
| 2670 | aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_vec_u64 (cpu, vs, 1)); |
| 2671 | break; |
| 2672 | |
| 2673 | case 0x1: |
| 2674 | case 0x3: |
| 2675 | case 0x5: |
| 2676 | case 0x7: |
| 2677 | aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_vec_u32 |
| 2678 | (cpu, vs, INSTR (20, 19))); |
| 2679 | break; |
| 2680 | |
| 2681 | default: |
| 2682 | HALT_NYI; |
| 2683 | } |
| 2684 | } |
| 2685 | |
| 2686 | static void |
| 2687 | do_vec_INS (sim_cpu *cpu) |
| 2688 | { |
| 2689 | /* instr[31,21] = 01001110000 |
| 2690 | instr[20,16] = element size and index |
| 2691 | instr[15,10] = 000111 |
| 2692 | instr[9,5] = W source |
| 2693 | instr[4,0] = V dest */ |
| 2694 | |
| 2695 | int index; |
| 2696 | unsigned rs = INSTR (9, 5); |
| 2697 | unsigned vd = INSTR (4, 0); |
| 2698 | |
| 2699 | NYI_assert (31, 21, 0x270); |
| 2700 | NYI_assert (15, 10, 0x07); |
| 2701 | |
| 2702 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2703 | if (INSTR (16, 16)) |
| 2704 | { |
| 2705 | index = INSTR (20, 17); |
| 2706 | aarch64_set_vec_u8 (cpu, vd, index, |
| 2707 | aarch64_get_reg_u8 (cpu, rs, NO_SP)); |
| 2708 | } |
| 2709 | else if (INSTR (17, 17)) |
| 2710 | { |
| 2711 | index = INSTR (20, 18); |
| 2712 | aarch64_set_vec_u16 (cpu, vd, index, |
| 2713 | aarch64_get_reg_u16 (cpu, rs, NO_SP)); |
| 2714 | } |
| 2715 | else if (INSTR (18, 18)) |
| 2716 | { |
| 2717 | index = INSTR (20, 19); |
| 2718 | aarch64_set_vec_u32 (cpu, vd, index, |
| 2719 | aarch64_get_reg_u32 (cpu, rs, NO_SP)); |
| 2720 | } |
| 2721 | else if (INSTR (19, 19)) |
| 2722 | { |
| 2723 | index = INSTR (20, 20); |
| 2724 | aarch64_set_vec_u64 (cpu, vd, index, |
| 2725 | aarch64_get_reg_u64 (cpu, rs, NO_SP)); |
| 2726 | } |
| 2727 | else |
| 2728 | HALT_NYI; |
| 2729 | } |
| 2730 | |
| 2731 | static void |
| 2732 | do_vec_DUP_vector_into_vector (sim_cpu *cpu) |
| 2733 | { |
| 2734 | /* instr[31] = 0 |
| 2735 | instr[30] = half(0)/full(1) |
| 2736 | instr[29,21] = 00 1110 000 |
| 2737 | instr[20,16] = element size and index |
| 2738 | instr[15,10] = 0000 01 |
| 2739 | instr[9,5] = V source |
| 2740 | instr[4,0] = V dest. */ |
| 2741 | |
| 2742 | unsigned full = INSTR (30, 30); |
| 2743 | unsigned vs = INSTR (9, 5); |
| 2744 | unsigned vd = INSTR (4, 0); |
| 2745 | int i, index; |
| 2746 | |
| 2747 | NYI_assert (29, 21, 0x070); |
| 2748 | NYI_assert (15, 10, 0x01); |
| 2749 | |
| 2750 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2751 | if (INSTR (16, 16)) |
| 2752 | { |
| 2753 | index = INSTR (20, 17); |
| 2754 | |
| 2755 | for (i = 0; i < (full ? 16 : 8); i++) |
| 2756 | aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u8 (cpu, vs, index)); |
| 2757 | } |
| 2758 | else if (INSTR (17, 17)) |
| 2759 | { |
| 2760 | index = INSTR (20, 18); |
| 2761 | |
| 2762 | for (i = 0; i < (full ? 8 : 4); i++) |
| 2763 | aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vs, index)); |
| 2764 | } |
| 2765 | else if (INSTR (18, 18)) |
| 2766 | { |
| 2767 | index = INSTR (20, 19); |
| 2768 | |
| 2769 | for (i = 0; i < (full ? 4 : 2); i++) |
| 2770 | aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vs, index)); |
| 2771 | } |
| 2772 | else |
| 2773 | { |
| 2774 | if (INSTR (19, 19) == 0) |
| 2775 | HALT_UNALLOC; |
| 2776 | |
| 2777 | if (! full) |
| 2778 | HALT_UNALLOC; |
| 2779 | |
| 2780 | index = INSTR (20, 20); |
| 2781 | |
| 2782 | for (i = 0; i < 2; i++) |
| 2783 | aarch64_set_vec_u64 (cpu, vd, i, aarch64_get_vec_u64 (cpu, vs, index)); |
| 2784 | } |
| 2785 | } |
| 2786 | |
| 2787 | static void |
| 2788 | do_vec_TBL (sim_cpu *cpu) |
| 2789 | { |
| 2790 | /* instr[31] = 0 |
| 2791 | instr[30] = half(0)/full(1) |
| 2792 | instr[29,21] = 00 1110 000 |
| 2793 | instr[20,16] = Vm |
| 2794 | instr[15] = 0 |
| 2795 | instr[14,13] = vec length |
| 2796 | instr[12,10] = 000 |
| 2797 | instr[9,5] = V start |
| 2798 | instr[4,0] = V dest */ |
| 2799 | |
| 2800 | int full = INSTR (30, 30); |
| 2801 | int len = INSTR (14, 13) + 1; |
| 2802 | unsigned vm = INSTR (20, 16); |
| 2803 | unsigned vn = INSTR (9, 5); |
| 2804 | unsigned vd = INSTR (4, 0); |
| 2805 | unsigned i; |
| 2806 | |
| 2807 | NYI_assert (29, 21, 0x070); |
| 2808 | NYI_assert (12, 10, 0); |
| 2809 | |
| 2810 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2811 | for (i = 0; i < (full ? 16 : 8); i++) |
| 2812 | { |
| 2813 | unsigned int selector = aarch64_get_vec_u8 (cpu, vm, i); |
| 2814 | uint8_t val; |
| 2815 | |
| 2816 | if (selector < 16) |
| 2817 | val = aarch64_get_vec_u8 (cpu, vn, selector); |
| 2818 | else if (selector < 32) |
| 2819 | val = len < 2 ? 0 : aarch64_get_vec_u8 (cpu, vn + 1, selector - 16); |
| 2820 | else if (selector < 48) |
| 2821 | val = len < 3 ? 0 : aarch64_get_vec_u8 (cpu, vn + 2, selector - 32); |
| 2822 | else if (selector < 64) |
| 2823 | val = len < 4 ? 0 : aarch64_get_vec_u8 (cpu, vn + 3, selector - 48); |
| 2824 | else |
| 2825 | val = 0; |
| 2826 | |
| 2827 | aarch64_set_vec_u8 (cpu, vd, i, val); |
| 2828 | } |
| 2829 | } |
| 2830 | |
| 2831 | static void |
| 2832 | do_vec_TRN (sim_cpu *cpu) |
| 2833 | { |
| 2834 | /* instr[31] = 0 |
| 2835 | instr[30] = half(0)/full(1) |
| 2836 | instr[29,24] = 00 1110 |
| 2837 | instr[23,22] = size |
| 2838 | instr[21] = 0 |
| 2839 | instr[20,16] = Vm |
| 2840 | instr[15] = 0 |
| 2841 | instr[14] = TRN1 (0) / TRN2 (1) |
| 2842 | instr[13,10] = 1010 |
| 2843 | instr[9,5] = V source |
| 2844 | instr[4,0] = V dest. */ |
| 2845 | |
| 2846 | int full = INSTR (30, 30); |
| 2847 | int second = INSTR (14, 14); |
| 2848 | unsigned vm = INSTR (20, 16); |
| 2849 | unsigned vn = INSTR (9, 5); |
| 2850 | unsigned vd = INSTR (4, 0); |
| 2851 | unsigned i; |
| 2852 | |
| 2853 | NYI_assert (29, 24, 0x0E); |
| 2854 | NYI_assert (13, 10, 0xA); |
| 2855 | |
| 2856 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2857 | switch (INSTR (23, 22)) |
| 2858 | { |
| 2859 | case 0: |
| 2860 | for (i = 0; i < (full ? 8 : 4); i++) |
| 2861 | { |
| 2862 | aarch64_set_vec_u8 |
| 2863 | (cpu, vd, i * 2, |
| 2864 | aarch64_get_vec_u8 (cpu, second ? vm : vn, i * 2)); |
| 2865 | aarch64_set_vec_u8 |
| 2866 | (cpu, vd, 1 * 2 + 1, |
| 2867 | aarch64_get_vec_u8 (cpu, second ? vn : vm, i * 2 + 1)); |
| 2868 | } |
| 2869 | break; |
| 2870 | |
| 2871 | case 1: |
| 2872 | for (i = 0; i < (full ? 4 : 2); i++) |
| 2873 | { |
| 2874 | aarch64_set_vec_u16 |
| 2875 | (cpu, vd, i * 2, |
| 2876 | aarch64_get_vec_u16 (cpu, second ? vm : vn, i * 2)); |
| 2877 | aarch64_set_vec_u16 |
| 2878 | (cpu, vd, 1 * 2 + 1, |
| 2879 | aarch64_get_vec_u16 (cpu, second ? vn : vm, i * 2 + 1)); |
| 2880 | } |
| 2881 | break; |
| 2882 | |
| 2883 | case 2: |
| 2884 | aarch64_set_vec_u32 |
| 2885 | (cpu, vd, 0, aarch64_get_vec_u32 (cpu, second ? vm : vn, 0)); |
| 2886 | aarch64_set_vec_u32 |
| 2887 | (cpu, vd, 1, aarch64_get_vec_u32 (cpu, second ? vn : vm, 1)); |
| 2888 | aarch64_set_vec_u32 |
| 2889 | (cpu, vd, 2, aarch64_get_vec_u32 (cpu, second ? vm : vn, 2)); |
| 2890 | aarch64_set_vec_u32 |
| 2891 | (cpu, vd, 3, aarch64_get_vec_u32 (cpu, second ? vn : vm, 3)); |
| 2892 | break; |
| 2893 | |
| 2894 | case 3: |
| 2895 | if (! full) |
| 2896 | HALT_UNALLOC; |
| 2897 | |
| 2898 | aarch64_set_vec_u64 (cpu, vd, 0, |
| 2899 | aarch64_get_vec_u64 (cpu, second ? vm : vn, 0)); |
| 2900 | aarch64_set_vec_u64 (cpu, vd, 1, |
| 2901 | aarch64_get_vec_u64 (cpu, second ? vn : vm, 1)); |
| 2902 | break; |
| 2903 | } |
| 2904 | } |
| 2905 | |
| 2906 | static void |
| 2907 | do_vec_DUP_scalar_into_vector (sim_cpu *cpu) |
| 2908 | { |
| 2909 | /* instr[31] = 0 |
| 2910 | instr[30] = 0=> zero top 64-bits, 1=> duplicate into top 64-bits |
| 2911 | [must be 1 for 64-bit xfer] |
| 2912 | instr[29,20] = 00 1110 0000 |
| 2913 | instr[19,16] = element size: 0001=> 8-bits, 0010=> 16-bits, |
| 2914 | 0100=> 32-bits. 1000=>64-bits |
| 2915 | instr[15,10] = 0000 11 |
| 2916 | instr[9,5] = W source |
| 2917 | instr[4,0] = V dest. */ |
| 2918 | |
| 2919 | unsigned i; |
| 2920 | unsigned Vd = INSTR (4, 0); |
| 2921 | unsigned Rs = INSTR (9, 5); |
| 2922 | int both = INSTR (30, 30); |
| 2923 | |
| 2924 | NYI_assert (29, 20, 0x0E0); |
| 2925 | NYI_assert (15, 10, 0x03); |
| 2926 | |
| 2927 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2928 | switch (INSTR (19, 16)) |
| 2929 | { |
| 2930 | case 1: |
| 2931 | for (i = 0; i < (both ? 16 : 8); i++) |
| 2932 | aarch64_set_vec_u8 (cpu, Vd, i, aarch64_get_reg_u8 (cpu, Rs, NO_SP)); |
| 2933 | break; |
| 2934 | |
| 2935 | case 2: |
| 2936 | for (i = 0; i < (both ? 8 : 4); i++) |
| 2937 | aarch64_set_vec_u16 (cpu, Vd, i, aarch64_get_reg_u16 (cpu, Rs, NO_SP)); |
| 2938 | break; |
| 2939 | |
| 2940 | case 4: |
| 2941 | for (i = 0; i < (both ? 4 : 2); i++) |
| 2942 | aarch64_set_vec_u32 (cpu, Vd, i, aarch64_get_reg_u32 (cpu, Rs, NO_SP)); |
| 2943 | break; |
| 2944 | |
| 2945 | case 8: |
| 2946 | if (!both) |
| 2947 | HALT_NYI; |
| 2948 | aarch64_set_vec_u64 (cpu, Vd, 0, aarch64_get_reg_u64 (cpu, Rs, NO_SP)); |
| 2949 | aarch64_set_vec_u64 (cpu, Vd, 1, aarch64_get_reg_u64 (cpu, Rs, NO_SP)); |
| 2950 | break; |
| 2951 | |
| 2952 | default: |
| 2953 | HALT_NYI; |
| 2954 | } |
| 2955 | } |
| 2956 | |
| 2957 | static void |
| 2958 | do_vec_UZP (sim_cpu *cpu) |
| 2959 | { |
| 2960 | /* instr[31] = 0 |
| 2961 | instr[30] = half(0)/full(1) |
| 2962 | instr[29,24] = 00 1110 |
| 2963 | instr[23,22] = size: byte(00), half(01), word (10), long (11) |
| 2964 | instr[21] = 0 |
| 2965 | instr[20,16] = Vm |
| 2966 | instr[15] = 0 |
| 2967 | instr[14] = lower (0) / upper (1) |
| 2968 | instr[13,10] = 0110 |
| 2969 | instr[9,5] = Vn |
| 2970 | instr[4,0] = Vd. */ |
| 2971 | |
| 2972 | int full = INSTR (30, 30); |
| 2973 | int upper = INSTR (14, 14); |
| 2974 | |
| 2975 | unsigned vm = INSTR (20, 16); |
| 2976 | unsigned vn = INSTR (9, 5); |
| 2977 | unsigned vd = INSTR (4, 0); |
| 2978 | |
| 2979 | uint64_t val_m1 = aarch64_get_vec_u64 (cpu, vm, 0); |
| 2980 | uint64_t val_m2 = aarch64_get_vec_u64 (cpu, vm, 1); |
| 2981 | uint64_t val_n1 = aarch64_get_vec_u64 (cpu, vn, 0); |
| 2982 | uint64_t val_n2 = aarch64_get_vec_u64 (cpu, vn, 1); |
| 2983 | |
| 2984 | uint64_t val1 = 0; |
| 2985 | uint64_t val2 = 0; |
| 2986 | |
| 2987 | uint64_t input1 = upper ? val_n1 : val_m1; |
| 2988 | uint64_t input2 = upper ? val_n2 : val_m2; |
| 2989 | unsigned i; |
| 2990 | |
| 2991 | NYI_assert (29, 24, 0x0E); |
| 2992 | NYI_assert (21, 21, 0); |
| 2993 | NYI_assert (15, 15, 0); |
| 2994 | NYI_assert (13, 10, 6); |
| 2995 | |
| 2996 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 2997 | switch (INSTR (23, 23)) |
| 2998 | { |
| 2999 | case 0: |
| 3000 | for (i = 0; i < 8; i++) |
| 3001 | { |
| 3002 | val1 |= (input1 >> (i * 8)) & (0xFFULL << (i * 8)); |
| 3003 | val2 |= (input2 >> (i * 8)) & (0xFFULL << (i * 8)); |
| 3004 | } |
| 3005 | break; |
| 3006 | |
| 3007 | case 1: |
| 3008 | for (i = 0; i < 4; i++) |
| 3009 | { |
| 3010 | val1 |= (input1 >> (i * 16)) & (0xFFFFULL << (i * 16)); |
| 3011 | val2 |= (input2 >> (i * 16)) & (0xFFFFULL << (i * 16)); |
| 3012 | } |
| 3013 | break; |
| 3014 | |
| 3015 | case 2: |
| 3016 | val1 = ((input1 & 0xFFFFFFFF) | ((input1 >> 32) & 0xFFFFFFFF00000000ULL)); |
| 3017 | val2 = ((input2 & 0xFFFFFFFF) | ((input2 >> 32) & 0xFFFFFFFF00000000ULL)); |
| 3018 | |
| 3019 | case 3: |
| 3020 | val1 = input1; |
| 3021 | val2 = input2; |
| 3022 | break; |
| 3023 | } |
| 3024 | |
| 3025 | aarch64_set_vec_u64 (cpu, vd, 0, val1); |
| 3026 | if (full) |
| 3027 | aarch64_set_vec_u64 (cpu, vd, 1, val2); |
| 3028 | } |
| 3029 | |
| 3030 | static void |
| 3031 | do_vec_ZIP (sim_cpu *cpu) |
| 3032 | { |
| 3033 | /* instr[31] = 0 |
| 3034 | instr[30] = half(0)/full(1) |
| 3035 | instr[29,24] = 00 1110 |
| 3036 | instr[23,22] = size: byte(00), hald(01), word (10), long (11) |
| 3037 | instr[21] = 0 |
| 3038 | instr[20,16] = Vm |
| 3039 | instr[15] = 0 |
| 3040 | instr[14] = lower (0) / upper (1) |
| 3041 | instr[13,10] = 1110 |
| 3042 | instr[9,5] = Vn |
| 3043 | instr[4,0] = Vd. */ |
| 3044 | |
| 3045 | int full = INSTR (30, 30); |
| 3046 | int upper = INSTR (14, 14); |
| 3047 | |
| 3048 | unsigned vm = INSTR (20, 16); |
| 3049 | unsigned vn = INSTR (9, 5); |
| 3050 | unsigned vd = INSTR (4, 0); |
| 3051 | |
| 3052 | uint64_t val_m1 = aarch64_get_vec_u64 (cpu, vm, 0); |
| 3053 | uint64_t val_m2 = aarch64_get_vec_u64 (cpu, vm, 1); |
| 3054 | uint64_t val_n1 = aarch64_get_vec_u64 (cpu, vn, 0); |
| 3055 | uint64_t val_n2 = aarch64_get_vec_u64 (cpu, vn, 1); |
| 3056 | |
| 3057 | uint64_t val1 = 0; |
| 3058 | uint64_t val2 = 0; |
| 3059 | |
| 3060 | uint64_t input1 = upper ? val_n1 : val_m1; |
| 3061 | uint64_t input2 = upper ? val_n2 : val_m2; |
| 3062 | |
| 3063 | NYI_assert (29, 24, 0x0E); |
| 3064 | NYI_assert (21, 21, 0); |
| 3065 | NYI_assert (15, 15, 0); |
| 3066 | NYI_assert (13, 10, 0xE); |
| 3067 | |
| 3068 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3069 | switch (INSTR (23, 23)) |
| 3070 | { |
| 3071 | case 0: |
| 3072 | val1 = |
| 3073 | ((input1 << 0) & (0xFF << 0)) |
| 3074 | | ((input2 << 8) & (0xFF << 8)) |
| 3075 | | ((input1 << 8) & (0xFF << 16)) |
| 3076 | | ((input2 << 16) & (0xFF << 24)) |
| 3077 | | ((input1 << 16) & (0xFFULL << 32)) |
| 3078 | | ((input2 << 24) & (0xFFULL << 40)) |
| 3079 | | ((input1 << 24) & (0xFFULL << 48)) |
| 3080 | | ((input2 << 32) & (0xFFULL << 56)); |
| 3081 | |
| 3082 | val2 = |
| 3083 | ((input1 >> 32) & (0xFF << 0)) |
| 3084 | | ((input2 >> 24) & (0xFF << 8)) |
| 3085 | | ((input1 >> 24) & (0xFF << 16)) |
| 3086 | | ((input2 >> 16) & (0xFF << 24)) |
| 3087 | | ((input1 >> 16) & (0xFFULL << 32)) |
| 3088 | | ((input2 >> 8) & (0xFFULL << 40)) |
| 3089 | | ((input1 >> 8) & (0xFFULL << 48)) |
| 3090 | | ((input2 >> 0) & (0xFFULL << 56)); |
| 3091 | break; |
| 3092 | |
| 3093 | case 1: |
| 3094 | val1 = |
| 3095 | ((input1 << 0) & (0xFFFF << 0)) |
| 3096 | | ((input2 << 16) & (0xFFFF << 16)) |
| 3097 | | ((input1 << 16) & (0xFFFFULL << 32)) |
| 3098 | | ((input2 << 32) & (0xFFFFULL << 48)); |
| 3099 | |
| 3100 | val2 = |
| 3101 | ((input1 >> 32) & (0xFFFF << 0)) |
| 3102 | | ((input2 >> 16) & (0xFFFF << 16)) |
| 3103 | | ((input1 >> 16) & (0xFFFFULL << 32)) |
| 3104 | | ((input2 >> 0) & (0xFFFFULL << 48)); |
| 3105 | break; |
| 3106 | |
| 3107 | case 2: |
| 3108 | val1 = (input1 & 0xFFFFFFFFULL) | (input2 << 32); |
| 3109 | val2 = (input2 & 0xFFFFFFFFULL) | (input1 << 32); |
| 3110 | break; |
| 3111 | |
| 3112 | case 3: |
| 3113 | val1 = input1; |
| 3114 | val2 = input2; |
| 3115 | break; |
| 3116 | } |
| 3117 | |
| 3118 | aarch64_set_vec_u64 (cpu, vd, 0, val1); |
| 3119 | if (full) |
| 3120 | aarch64_set_vec_u64 (cpu, vd, 1, val2); |
| 3121 | } |
| 3122 | |
| 3123 | /* Floating point immediates are encoded in 8 bits. |
| 3124 | fpimm[7] = sign bit. |
| 3125 | fpimm[6:4] = signed exponent. |
| 3126 | fpimm[3:0] = fraction (assuming leading 1). |
| 3127 | i.e. F = s * 1.f * 2^(e - b). */ |
| 3128 | |
| 3129 | static float |
| 3130 | fp_immediate_for_encoding_32 (uint32_t imm8) |
| 3131 | { |
| 3132 | float u; |
| 3133 | uint32_t s, e, f, i; |
| 3134 | |
| 3135 | s = (imm8 >> 7) & 0x1; |
| 3136 | e = (imm8 >> 4) & 0x7; |
| 3137 | f = imm8 & 0xf; |
| 3138 | |
| 3139 | /* The fp value is s * n/16 * 2r where n is 16+e. */ |
| 3140 | u = (16.0 + f) / 16.0; |
| 3141 | |
| 3142 | /* N.B. exponent is signed. */ |
| 3143 | if (e < 4) |
| 3144 | { |
| 3145 | int epos = e; |
| 3146 | |
| 3147 | for (i = 0; i <= epos; i++) |
| 3148 | u *= 2.0; |
| 3149 | } |
| 3150 | else |
| 3151 | { |
| 3152 | int eneg = 7 - e; |
| 3153 | |
| 3154 | for (i = 0; i < eneg; i++) |
| 3155 | u /= 2.0; |
| 3156 | } |
| 3157 | |
| 3158 | if (s) |
| 3159 | u = - u; |
| 3160 | |
| 3161 | return u; |
| 3162 | } |
| 3163 | |
| 3164 | static double |
| 3165 | fp_immediate_for_encoding_64 (uint32_t imm8) |
| 3166 | { |
| 3167 | double u; |
| 3168 | uint32_t s, e, f, i; |
| 3169 | |
| 3170 | s = (imm8 >> 7) & 0x1; |
| 3171 | e = (imm8 >> 4) & 0x7; |
| 3172 | f = imm8 & 0xf; |
| 3173 | |
| 3174 | /* The fp value is s * n/16 * 2r where n is 16+e. */ |
| 3175 | u = (16.0 + f) / 16.0; |
| 3176 | |
| 3177 | /* N.B. exponent is signed. */ |
| 3178 | if (e < 4) |
| 3179 | { |
| 3180 | int epos = e; |
| 3181 | |
| 3182 | for (i = 0; i <= epos; i++) |
| 3183 | u *= 2.0; |
| 3184 | } |
| 3185 | else |
| 3186 | { |
| 3187 | int eneg = 7 - e; |
| 3188 | |
| 3189 | for (i = 0; i < eneg; i++) |
| 3190 | u /= 2.0; |
| 3191 | } |
| 3192 | |
| 3193 | if (s) |
| 3194 | u = - u; |
| 3195 | |
| 3196 | return u; |
| 3197 | } |
| 3198 | |
| 3199 | static void |
| 3200 | do_vec_MOV_immediate (sim_cpu *cpu) |
| 3201 | { |
| 3202 | /* instr[31] = 0 |
| 3203 | instr[30] = full/half selector |
| 3204 | instr[29,19] = 00111100000 |
| 3205 | instr[18,16] = high 3 bits of uimm8 |
| 3206 | instr[15,12] = size & shift: |
| 3207 | 0000 => 32-bit |
| 3208 | 0010 => 32-bit + LSL#8 |
| 3209 | 0100 => 32-bit + LSL#16 |
| 3210 | 0110 => 32-bit + LSL#24 |
| 3211 | 1010 => 16-bit + LSL#8 |
| 3212 | 1000 => 16-bit |
| 3213 | 1101 => 32-bit + MSL#16 |
| 3214 | 1100 => 32-bit + MSL#8 |
| 3215 | 1110 => 8-bit |
| 3216 | 1111 => double |
| 3217 | instr[11,10] = 01 |
| 3218 | instr[9,5] = low 5-bits of uimm8 |
| 3219 | instr[4,0] = Vd. */ |
| 3220 | |
| 3221 | int full = INSTR (30, 30); |
| 3222 | unsigned vd = INSTR (4, 0); |
| 3223 | unsigned val = (INSTR (18, 16) << 5) | INSTR (9, 5); |
| 3224 | unsigned i; |
| 3225 | |
| 3226 | NYI_assert (29, 19, 0x1E0); |
| 3227 | NYI_assert (11, 10, 1); |
| 3228 | |
| 3229 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3230 | switch (INSTR (15, 12)) |
| 3231 | { |
| 3232 | case 0x0: /* 32-bit, no shift. */ |
| 3233 | case 0x2: /* 32-bit, shift by 8. */ |
| 3234 | case 0x4: /* 32-bit, shift by 16. */ |
| 3235 | case 0x6: /* 32-bit, shift by 24. */ |
| 3236 | val <<= (8 * INSTR (14, 13)); |
| 3237 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3238 | aarch64_set_vec_u32 (cpu, vd, i, val); |
| 3239 | break; |
| 3240 | |
| 3241 | case 0xa: /* 16-bit, shift by 8. */ |
| 3242 | val <<= 8; |
| 3243 | /* Fall through. */ |
| 3244 | case 0x8: /* 16-bit, no shift. */ |
| 3245 | for (i = 0; i < (full ? 8 : 4); i++) |
| 3246 | aarch64_set_vec_u16 (cpu, vd, i, val); |
| 3247 | /* Fall through. */ |
| 3248 | case 0xd: /* 32-bit, mask shift by 16. */ |
| 3249 | val <<= 8; |
| 3250 | val |= 0xFF; |
| 3251 | /* Fall through. */ |
| 3252 | case 0xc: /* 32-bit, mask shift by 8. */ |
| 3253 | val <<= 8; |
| 3254 | val |= 0xFF; |
| 3255 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3256 | aarch64_set_vec_u32 (cpu, vd, i, val); |
| 3257 | break; |
| 3258 | |
| 3259 | case 0xe: /* 8-bit, no shift. */ |
| 3260 | for (i = 0; i < (full ? 16 : 8); i++) |
| 3261 | aarch64_set_vec_u8 (cpu, vd, i, val); |
| 3262 | break; |
| 3263 | |
| 3264 | case 0xf: /* FMOV Vs.{2|4}S, #fpimm. */ |
| 3265 | { |
| 3266 | float u = fp_immediate_for_encoding_32 (val); |
| 3267 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3268 | aarch64_set_vec_float (cpu, vd, i, u); |
| 3269 | break; |
| 3270 | } |
| 3271 | |
| 3272 | default: |
| 3273 | HALT_NYI; |
| 3274 | } |
| 3275 | } |
| 3276 | |
| 3277 | static void |
| 3278 | do_vec_MVNI (sim_cpu *cpu) |
| 3279 | { |
| 3280 | /* instr[31] = 0 |
| 3281 | instr[30] = full/half selector |
| 3282 | instr[29,19] = 10111100000 |
| 3283 | instr[18,16] = high 3 bits of uimm8 |
| 3284 | instr[15,12] = selector |
| 3285 | instr[11,10] = 01 |
| 3286 | instr[9,5] = low 5-bits of uimm8 |
| 3287 | instr[4,0] = Vd. */ |
| 3288 | |
| 3289 | int full = INSTR (30, 30); |
| 3290 | unsigned vd = INSTR (4, 0); |
| 3291 | unsigned val = (INSTR (18, 16) << 5) | INSTR (9, 5); |
| 3292 | unsigned i; |
| 3293 | |
| 3294 | NYI_assert (29, 19, 0x5E0); |
| 3295 | NYI_assert (11, 10, 1); |
| 3296 | |
| 3297 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3298 | switch (INSTR (15, 12)) |
| 3299 | { |
| 3300 | case 0x0: /* 32-bit, no shift. */ |
| 3301 | case 0x2: /* 32-bit, shift by 8. */ |
| 3302 | case 0x4: /* 32-bit, shift by 16. */ |
| 3303 | case 0x6: /* 32-bit, shift by 24. */ |
| 3304 | val <<= (8 * INSTR (14, 13)); |
| 3305 | val = ~ val; |
| 3306 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3307 | aarch64_set_vec_u32 (cpu, vd, i, val); |
| 3308 | return; |
| 3309 | |
| 3310 | case 0xa: /* 16-bit, 8 bit shift. */ |
| 3311 | val <<= 8; |
| 3312 | case 0x8: /* 16-bit, no shift. */ |
| 3313 | val = ~ val; |
| 3314 | for (i = 0; i < (full ? 8 : 4); i++) |
| 3315 | aarch64_set_vec_u16 (cpu, vd, i, val); |
| 3316 | return; |
| 3317 | |
| 3318 | case 0xd: /* 32-bit, mask shift by 16. */ |
| 3319 | val <<= 8; |
| 3320 | val |= 0xFF; |
| 3321 | case 0xc: /* 32-bit, mask shift by 8. */ |
| 3322 | val <<= 8; |
| 3323 | val |= 0xFF; |
| 3324 | val = ~ val; |
| 3325 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3326 | aarch64_set_vec_u32 (cpu, vd, i, val); |
| 3327 | return; |
| 3328 | |
| 3329 | case 0xE: /* MOVI Dn, #mask64 */ |
| 3330 | { |
| 3331 | uint64_t mask = 0; |
| 3332 | |
| 3333 | for (i = 0; i < 8; i++) |
| 3334 | if (val & (1 << i)) |
| 3335 | mask |= (0xFFUL << (i * 8)); |
| 3336 | aarch64_set_vec_u64 (cpu, vd, 0, mask); |
| 3337 | aarch64_set_vec_u64 (cpu, vd, 1, mask); |
| 3338 | return; |
| 3339 | } |
| 3340 | |
| 3341 | case 0xf: /* FMOV Vd.2D, #fpimm. */ |
| 3342 | { |
| 3343 | double u = fp_immediate_for_encoding_64 (val); |
| 3344 | |
| 3345 | if (! full) |
| 3346 | HALT_UNALLOC; |
| 3347 | |
| 3348 | aarch64_set_vec_double (cpu, vd, 0, u); |
| 3349 | aarch64_set_vec_double (cpu, vd, 1, u); |
| 3350 | return; |
| 3351 | } |
| 3352 | |
| 3353 | default: |
| 3354 | HALT_NYI; |
| 3355 | } |
| 3356 | } |
| 3357 | |
| 3358 | #define ABS(A) ((A) < 0 ? - (A) : (A)) |
| 3359 | |
| 3360 | static void |
| 3361 | do_vec_ABS (sim_cpu *cpu) |
| 3362 | { |
| 3363 | /* instr[31] = 0 |
| 3364 | instr[30] = half(0)/full(1) |
| 3365 | instr[29,24] = 00 1110 |
| 3366 | instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit, 11=> 64-bit |
| 3367 | instr[21,10] = 10 0000 1011 10 |
| 3368 | instr[9,5] = Vn |
| 3369 | instr[4.0] = Vd. */ |
| 3370 | |
| 3371 | unsigned vn = INSTR (9, 5); |
| 3372 | unsigned vd = INSTR (4, 0); |
| 3373 | unsigned full = INSTR (30, 30); |
| 3374 | unsigned i; |
| 3375 | |
| 3376 | NYI_assert (29, 24, 0x0E); |
| 3377 | NYI_assert (21, 10, 0x82E); |
| 3378 | |
| 3379 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3380 | switch (INSTR (23, 22)) |
| 3381 | { |
| 3382 | case 0: |
| 3383 | for (i = 0; i < (full ? 16 : 8); i++) |
| 3384 | aarch64_set_vec_s8 (cpu, vd, i, |
| 3385 | ABS (aarch64_get_vec_s8 (cpu, vn, i))); |
| 3386 | break; |
| 3387 | |
| 3388 | case 1: |
| 3389 | for (i = 0; i < (full ? 8 : 4); i++) |
| 3390 | aarch64_set_vec_s16 (cpu, vd, i, |
| 3391 | ABS (aarch64_get_vec_s16 (cpu, vn, i))); |
| 3392 | break; |
| 3393 | |
| 3394 | case 2: |
| 3395 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3396 | aarch64_set_vec_s32 (cpu, vd, i, |
| 3397 | ABS (aarch64_get_vec_s32 (cpu, vn, i))); |
| 3398 | break; |
| 3399 | |
| 3400 | case 3: |
| 3401 | if (! full) |
| 3402 | HALT_NYI; |
| 3403 | for (i = 0; i < 2; i++) |
| 3404 | aarch64_set_vec_s64 (cpu, vd, i, |
| 3405 | ABS (aarch64_get_vec_s64 (cpu, vn, i))); |
| 3406 | break; |
| 3407 | } |
| 3408 | } |
| 3409 | |
| 3410 | static void |
| 3411 | do_vec_ADDV (sim_cpu *cpu) |
| 3412 | { |
| 3413 | /* instr[31] = 0 |
| 3414 | instr[30] = full/half selector |
| 3415 | instr[29,24] = 00 1110 |
| 3416 | instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit, 11=> 64-bit |
| 3417 | instr[21,10] = 11 0001 1011 10 |
| 3418 | instr[9,5] = Vm |
| 3419 | instr[4.0] = Rd. */ |
| 3420 | |
| 3421 | unsigned vm = INSTR (9, 5); |
| 3422 | unsigned rd = INSTR (4, 0); |
| 3423 | unsigned i; |
| 3424 | uint64_t val = 0; |
| 3425 | int full = INSTR (30, 30); |
| 3426 | |
| 3427 | NYI_assert (29, 24, 0x0E); |
| 3428 | NYI_assert (21, 10, 0xC6E); |
| 3429 | |
| 3430 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3431 | switch (INSTR (23, 22)) |
| 3432 | { |
| 3433 | case 0: |
| 3434 | for (i = 0; i < (full ? 16 : 8); i++) |
| 3435 | val += aarch64_get_vec_u8 (cpu, vm, i); |
| 3436 | aarch64_set_reg_u64 (cpu, rd, NO_SP, val); |
| 3437 | return; |
| 3438 | |
| 3439 | case 1: |
| 3440 | for (i = 0; i < (full ? 8 : 4); i++) |
| 3441 | val += aarch64_get_vec_u16 (cpu, vm, i); |
| 3442 | aarch64_set_reg_u64 (cpu, rd, NO_SP, val); |
| 3443 | return; |
| 3444 | |
| 3445 | case 2: |
| 3446 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3447 | val += aarch64_get_vec_u32 (cpu, vm, i); |
| 3448 | aarch64_set_reg_u64 (cpu, rd, NO_SP, val); |
| 3449 | return; |
| 3450 | |
| 3451 | case 3: |
| 3452 | if (! full) |
| 3453 | HALT_UNALLOC; |
| 3454 | val = aarch64_get_vec_u64 (cpu, vm, 0); |
| 3455 | val += aarch64_get_vec_u64 (cpu, vm, 1); |
| 3456 | aarch64_set_reg_u64 (cpu, rd, NO_SP, val); |
| 3457 | return; |
| 3458 | } |
| 3459 | } |
| 3460 | |
| 3461 | static void |
| 3462 | do_vec_ins_2 (sim_cpu *cpu) |
| 3463 | { |
| 3464 | /* instr[31,21] = 01001110000 |
| 3465 | instr[20,18] = size & element selector |
| 3466 | instr[17,14] = 0000 |
| 3467 | instr[13] = direction: to vec(0), from vec (1) |
| 3468 | instr[12,10] = 111 |
| 3469 | instr[9,5] = Vm |
| 3470 | instr[4,0] = Vd. */ |
| 3471 | |
| 3472 | unsigned elem; |
| 3473 | unsigned vm = INSTR (9, 5); |
| 3474 | unsigned vd = INSTR (4, 0); |
| 3475 | |
| 3476 | NYI_assert (31, 21, 0x270); |
| 3477 | NYI_assert (17, 14, 0); |
| 3478 | NYI_assert (12, 10, 7); |
| 3479 | |
| 3480 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3481 | if (INSTR (13, 13) == 1) |
| 3482 | { |
| 3483 | if (INSTR (18, 18) == 1) |
| 3484 | { |
| 3485 | /* 32-bit moves. */ |
| 3486 | elem = INSTR (20, 19); |
| 3487 | aarch64_set_reg_u64 (cpu, vd, NO_SP, |
| 3488 | aarch64_get_vec_u32 (cpu, vm, elem)); |
| 3489 | } |
| 3490 | else |
| 3491 | { |
| 3492 | /* 64-bit moves. */ |
| 3493 | if (INSTR (19, 19) != 1) |
| 3494 | HALT_NYI; |
| 3495 | |
| 3496 | elem = INSTR (20, 20); |
| 3497 | aarch64_set_reg_u64 (cpu, vd, NO_SP, |
| 3498 | aarch64_get_vec_u64 (cpu, vm, elem)); |
| 3499 | } |
| 3500 | } |
| 3501 | else |
| 3502 | { |
| 3503 | if (INSTR (18, 18) == 1) |
| 3504 | { |
| 3505 | /* 32-bit moves. */ |
| 3506 | elem = INSTR (20, 19); |
| 3507 | aarch64_set_vec_u32 (cpu, vd, elem, |
| 3508 | aarch64_get_reg_u32 (cpu, vm, NO_SP)); |
| 3509 | } |
| 3510 | else |
| 3511 | { |
| 3512 | /* 64-bit moves. */ |
| 3513 | if (INSTR (19, 19) != 1) |
| 3514 | HALT_NYI; |
| 3515 | |
| 3516 | elem = INSTR (20, 20); |
| 3517 | aarch64_set_vec_u64 (cpu, vd, elem, |
| 3518 | aarch64_get_reg_u64 (cpu, vm, NO_SP)); |
| 3519 | } |
| 3520 | } |
| 3521 | } |
| 3522 | |
| 3523 | #define DO_VEC_WIDENING_MUL(N, DST_TYPE, READ_TYPE, WRITE_TYPE) \ |
| 3524 | do \ |
| 3525 | { \ |
| 3526 | DST_TYPE a[N], b[N]; \ |
| 3527 | \ |
| 3528 | for (i = 0; i < (N); i++) \ |
| 3529 | { \ |
| 3530 | a[i] = aarch64_get_vec_##READ_TYPE (cpu, vn, i + bias); \ |
| 3531 | b[i] = aarch64_get_vec_##READ_TYPE (cpu, vm, i + bias); \ |
| 3532 | } \ |
| 3533 | for (i = 0; i < (N); i++) \ |
| 3534 | aarch64_set_vec_##WRITE_TYPE (cpu, vd, i, a[i] * b[i]); \ |
| 3535 | } \ |
| 3536 | while (0) |
| 3537 | |
| 3538 | static void |
| 3539 | do_vec_mull (sim_cpu *cpu) |
| 3540 | { |
| 3541 | /* instr[31] = 0 |
| 3542 | instr[30] = lower(0)/upper(1) selector |
| 3543 | instr[29] = signed(0)/unsigned(1) |
| 3544 | instr[28,24] = 0 1110 |
| 3545 | instr[23,22] = size: 8-bit (00), 16-bit (01), 32-bit (10) |
| 3546 | instr[21] = 1 |
| 3547 | instr[20,16] = Vm |
| 3548 | instr[15,10] = 11 0000 |
| 3549 | instr[9,5] = Vn |
| 3550 | instr[4.0] = Vd. */ |
| 3551 | |
| 3552 | int unsign = INSTR (29, 29); |
| 3553 | int bias = INSTR (30, 30); |
| 3554 | unsigned vm = INSTR (20, 16); |
| 3555 | unsigned vn = INSTR ( 9, 5); |
| 3556 | unsigned vd = INSTR ( 4, 0); |
| 3557 | unsigned i; |
| 3558 | |
| 3559 | NYI_assert (28, 24, 0x0E); |
| 3560 | NYI_assert (15, 10, 0x30); |
| 3561 | |
| 3562 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3563 | /* NB: Read source values before writing results, in case |
| 3564 | the source and destination vectors are the same. */ |
| 3565 | switch (INSTR (23, 22)) |
| 3566 | { |
| 3567 | case 0: |
| 3568 | if (bias) |
| 3569 | bias = 8; |
| 3570 | if (unsign) |
| 3571 | DO_VEC_WIDENING_MUL (8, uint16_t, u8, u16); |
| 3572 | else |
| 3573 | DO_VEC_WIDENING_MUL (8, int16_t, s8, s16); |
| 3574 | return; |
| 3575 | |
| 3576 | case 1: |
| 3577 | if (bias) |
| 3578 | bias = 4; |
| 3579 | if (unsign) |
| 3580 | DO_VEC_WIDENING_MUL (4, uint32_t, u16, u32); |
| 3581 | else |
| 3582 | DO_VEC_WIDENING_MUL (4, int32_t, s16, s32); |
| 3583 | return; |
| 3584 | |
| 3585 | case 2: |
| 3586 | if (bias) |
| 3587 | bias = 2; |
| 3588 | if (unsign) |
| 3589 | DO_VEC_WIDENING_MUL (2, uint64_t, u32, u64); |
| 3590 | else |
| 3591 | DO_VEC_WIDENING_MUL (2, int64_t, s32, s64); |
| 3592 | return; |
| 3593 | |
| 3594 | case 3: |
| 3595 | HALT_NYI; |
| 3596 | } |
| 3597 | } |
| 3598 | |
| 3599 | static void |
| 3600 | do_vec_fadd (sim_cpu *cpu) |
| 3601 | { |
| 3602 | /* instr[31] = 0 |
| 3603 | instr[30] = half(0)/full(1) |
| 3604 | instr[29,24] = 001110 |
| 3605 | instr[23] = FADD(0)/FSUB(1) |
| 3606 | instr[22] = float (0)/double(1) |
| 3607 | instr[21] = 1 |
| 3608 | instr[20,16] = Vm |
| 3609 | instr[15,10] = 110101 |
| 3610 | instr[9,5] = Vn |
| 3611 | instr[4.0] = Vd. */ |
| 3612 | |
| 3613 | unsigned vm = INSTR (20, 16); |
| 3614 | unsigned vn = INSTR (9, 5); |
| 3615 | unsigned vd = INSTR (4, 0); |
| 3616 | unsigned i; |
| 3617 | int full = INSTR (30, 30); |
| 3618 | |
| 3619 | NYI_assert (29, 24, 0x0E); |
| 3620 | NYI_assert (21, 21, 1); |
| 3621 | NYI_assert (15, 10, 0x35); |
| 3622 | |
| 3623 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3624 | if (INSTR (23, 23)) |
| 3625 | { |
| 3626 | if (INSTR (22, 22)) |
| 3627 | { |
| 3628 | if (! full) |
| 3629 | HALT_NYI; |
| 3630 | |
| 3631 | for (i = 0; i < 2; i++) |
| 3632 | aarch64_set_vec_double (cpu, vd, i, |
| 3633 | aarch64_get_vec_double (cpu, vn, i) |
| 3634 | - aarch64_get_vec_double (cpu, vm, i)); |
| 3635 | } |
| 3636 | else |
| 3637 | { |
| 3638 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3639 | aarch64_set_vec_float (cpu, vd, i, |
| 3640 | aarch64_get_vec_float (cpu, vn, i) |
| 3641 | - aarch64_get_vec_float (cpu, vm, i)); |
| 3642 | } |
| 3643 | } |
| 3644 | else |
| 3645 | { |
| 3646 | if (INSTR (22, 22)) |
| 3647 | { |
| 3648 | if (! full) |
| 3649 | HALT_NYI; |
| 3650 | |
| 3651 | for (i = 0; i < 2; i++) |
| 3652 | aarch64_set_vec_double (cpu, vd, i, |
| 3653 | aarch64_get_vec_double (cpu, vm, i) |
| 3654 | + aarch64_get_vec_double (cpu, vn, i)); |
| 3655 | } |
| 3656 | else |
| 3657 | { |
| 3658 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3659 | aarch64_set_vec_float (cpu, vd, i, |
| 3660 | aarch64_get_vec_float (cpu, vm, i) |
| 3661 | + aarch64_get_vec_float (cpu, vn, i)); |
| 3662 | } |
| 3663 | } |
| 3664 | } |
| 3665 | |
| 3666 | static void |
| 3667 | do_vec_add (sim_cpu *cpu) |
| 3668 | { |
| 3669 | /* instr[31] = 0 |
| 3670 | instr[30] = full/half selector |
| 3671 | instr[29,24] = 001110 |
| 3672 | instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit, 11=> 64-bit |
| 3673 | instr[21] = 1 |
| 3674 | instr[20,16] = Vn |
| 3675 | instr[15,10] = 100001 |
| 3676 | instr[9,5] = Vm |
| 3677 | instr[4.0] = Vd. */ |
| 3678 | |
| 3679 | unsigned vm = INSTR (20, 16); |
| 3680 | unsigned vn = INSTR (9, 5); |
| 3681 | unsigned vd = INSTR (4, 0); |
| 3682 | unsigned i; |
| 3683 | int full = INSTR (30, 30); |
| 3684 | |
| 3685 | NYI_assert (29, 24, 0x0E); |
| 3686 | NYI_assert (21, 21, 1); |
| 3687 | NYI_assert (15, 10, 0x21); |
| 3688 | |
| 3689 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3690 | switch (INSTR (23, 22)) |
| 3691 | { |
| 3692 | case 0: |
| 3693 | for (i = 0; i < (full ? 16 : 8); i++) |
| 3694 | aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u8 (cpu, vn, i) |
| 3695 | + aarch64_get_vec_u8 (cpu, vm, i)); |
| 3696 | return; |
| 3697 | |
| 3698 | case 1: |
| 3699 | for (i = 0; i < (full ? 8 : 4); i++) |
| 3700 | aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vn, i) |
| 3701 | + aarch64_get_vec_u16 (cpu, vm, i)); |
| 3702 | return; |
| 3703 | |
| 3704 | case 2: |
| 3705 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3706 | aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vn, i) |
| 3707 | + aarch64_get_vec_u32 (cpu, vm, i)); |
| 3708 | return; |
| 3709 | |
| 3710 | case 3: |
| 3711 | if (! full) |
| 3712 | HALT_UNALLOC; |
| 3713 | aarch64_set_vec_u64 (cpu, vd, 0, aarch64_get_vec_u64 (cpu, vn, 0) |
| 3714 | + aarch64_get_vec_u64 (cpu, vm, 0)); |
| 3715 | aarch64_set_vec_u64 (cpu, vd, 1, |
| 3716 | aarch64_get_vec_u64 (cpu, vn, 1) |
| 3717 | + aarch64_get_vec_u64 (cpu, vm, 1)); |
| 3718 | return; |
| 3719 | } |
| 3720 | } |
| 3721 | |
| 3722 | static void |
| 3723 | do_vec_mul (sim_cpu *cpu) |
| 3724 | { |
| 3725 | /* instr[31] = 0 |
| 3726 | instr[30] = full/half selector |
| 3727 | instr[29,24] = 00 1110 |
| 3728 | instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit |
| 3729 | instr[21] = 1 |
| 3730 | instr[20,16] = Vn |
| 3731 | instr[15,10] = 10 0111 |
| 3732 | instr[9,5] = Vm |
| 3733 | instr[4.0] = Vd. */ |
| 3734 | |
| 3735 | unsigned vm = INSTR (20, 16); |
| 3736 | unsigned vn = INSTR (9, 5); |
| 3737 | unsigned vd = INSTR (4, 0); |
| 3738 | unsigned i; |
| 3739 | int full = INSTR (30, 30); |
| 3740 | int bias = 0; |
| 3741 | |
| 3742 | NYI_assert (29, 24, 0x0E); |
| 3743 | NYI_assert (21, 21, 1); |
| 3744 | NYI_assert (15, 10, 0x27); |
| 3745 | |
| 3746 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3747 | switch (INSTR (23, 22)) |
| 3748 | { |
| 3749 | case 0: |
| 3750 | DO_VEC_WIDENING_MUL (full ? 16 : 8, uint16_t, u8, u16); |
| 3751 | return; |
| 3752 | |
| 3753 | case 1: |
| 3754 | DO_VEC_WIDENING_MUL (full ? 8 : 4, uint32_t, u16, u32); |
| 3755 | return; |
| 3756 | |
| 3757 | case 2: |
| 3758 | DO_VEC_WIDENING_MUL (full ? 4 : 2, uint64_t, u32, u64); |
| 3759 | return; |
| 3760 | |
| 3761 | case 3: |
| 3762 | HALT_UNALLOC; |
| 3763 | } |
| 3764 | } |
| 3765 | |
| 3766 | static void |
| 3767 | do_vec_MLA (sim_cpu *cpu) |
| 3768 | { |
| 3769 | /* instr[31] = 0 |
| 3770 | instr[30] = full/half selector |
| 3771 | instr[29,24] = 00 1110 |
| 3772 | instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit |
| 3773 | instr[21] = 1 |
| 3774 | instr[20,16] = Vn |
| 3775 | instr[15,10] = 1001 01 |
| 3776 | instr[9,5] = Vm |
| 3777 | instr[4.0] = Vd. */ |
| 3778 | |
| 3779 | unsigned vm = INSTR (20, 16); |
| 3780 | unsigned vn = INSTR (9, 5); |
| 3781 | unsigned vd = INSTR (4, 0); |
| 3782 | unsigned i; |
| 3783 | int full = INSTR (30, 30); |
| 3784 | |
| 3785 | NYI_assert (29, 24, 0x0E); |
| 3786 | NYI_assert (21, 21, 1); |
| 3787 | NYI_assert (15, 10, 0x25); |
| 3788 | |
| 3789 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3790 | switch (INSTR (23, 22)) |
| 3791 | { |
| 3792 | case 0: |
| 3793 | { |
| 3794 | uint16_t a[16], b[16]; |
| 3795 | |
| 3796 | for (i = 0; i < (full ? 16 : 8); i++) |
| 3797 | { |
| 3798 | a[i] = aarch64_get_vec_u8 (cpu, vn, i); |
| 3799 | b[i] = aarch64_get_vec_u8 (cpu, vm, i); |
| 3800 | } |
| 3801 | |
| 3802 | for (i = 0; i < (full ? 16 : 8); i++) |
| 3803 | { |
| 3804 | uint16_t v = aarch64_get_vec_u8 (cpu, vd, i); |
| 3805 | |
| 3806 | aarch64_set_vec_u16 (cpu, vd, i, v + (a[i] * b[i])); |
| 3807 | } |
| 3808 | } |
| 3809 | return; |
| 3810 | |
| 3811 | case 1: |
| 3812 | { |
| 3813 | uint32_t a[8], b[8]; |
| 3814 | |
| 3815 | for (i = 0; i < (full ? 8 : 4); i++) |
| 3816 | { |
| 3817 | a[i] = aarch64_get_vec_u16 (cpu, vn, i); |
| 3818 | b[i] = aarch64_get_vec_u16 (cpu, vm, i); |
| 3819 | } |
| 3820 | |
| 3821 | for (i = 0; i < (full ? 8 : 4); i++) |
| 3822 | { |
| 3823 | uint32_t v = aarch64_get_vec_u16 (cpu, vd, i); |
| 3824 | |
| 3825 | aarch64_set_vec_u32 (cpu, vd, i, v + (a[i] * b[i])); |
| 3826 | } |
| 3827 | } |
| 3828 | return; |
| 3829 | |
| 3830 | case 2: |
| 3831 | { |
| 3832 | uint64_t a[4], b[4]; |
| 3833 | |
| 3834 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3835 | { |
| 3836 | a[i] = aarch64_get_vec_u32 (cpu, vn, i); |
| 3837 | b[i] = aarch64_get_vec_u32 (cpu, vm, i); |
| 3838 | } |
| 3839 | |
| 3840 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3841 | { |
| 3842 | uint64_t v = aarch64_get_vec_u32 (cpu, vd, i); |
| 3843 | |
| 3844 | aarch64_set_vec_u64 (cpu, vd, i, v + (a[i] * b[i])); |
| 3845 | } |
| 3846 | } |
| 3847 | return; |
| 3848 | |
| 3849 | case 3: |
| 3850 | HALT_UNALLOC; |
| 3851 | } |
| 3852 | } |
| 3853 | |
| 3854 | static float |
| 3855 | fmaxnm (float a, float b) |
| 3856 | { |
| 3857 | if (fpclassify (a) == FP_NORMAL) |
| 3858 | { |
| 3859 | if (fpclassify (b) == FP_NORMAL) |
| 3860 | return a > b ? a : b; |
| 3861 | return a; |
| 3862 | } |
| 3863 | else if (fpclassify (b) == FP_NORMAL) |
| 3864 | return b; |
| 3865 | return a; |
| 3866 | } |
| 3867 | |
| 3868 | static float |
| 3869 | fminnm (float a, float b) |
| 3870 | { |
| 3871 | if (fpclassify (a) == FP_NORMAL) |
| 3872 | { |
| 3873 | if (fpclassify (b) == FP_NORMAL) |
| 3874 | return a < b ? a : b; |
| 3875 | return a; |
| 3876 | } |
| 3877 | else if (fpclassify (b) == FP_NORMAL) |
| 3878 | return b; |
| 3879 | return a; |
| 3880 | } |
| 3881 | |
| 3882 | static double |
| 3883 | dmaxnm (double a, double b) |
| 3884 | { |
| 3885 | if (fpclassify (a) == FP_NORMAL) |
| 3886 | { |
| 3887 | if (fpclassify (b) == FP_NORMAL) |
| 3888 | return a > b ? a : b; |
| 3889 | return a; |
| 3890 | } |
| 3891 | else if (fpclassify (b) == FP_NORMAL) |
| 3892 | return b; |
| 3893 | return a; |
| 3894 | } |
| 3895 | |
| 3896 | static double |
| 3897 | dminnm (double a, double b) |
| 3898 | { |
| 3899 | if (fpclassify (a) == FP_NORMAL) |
| 3900 | { |
| 3901 | if (fpclassify (b) == FP_NORMAL) |
| 3902 | return a < b ? a : b; |
| 3903 | return a; |
| 3904 | } |
| 3905 | else if (fpclassify (b) == FP_NORMAL) |
| 3906 | return b; |
| 3907 | return a; |
| 3908 | } |
| 3909 | |
| 3910 | static void |
| 3911 | do_vec_FminmaxNMP (sim_cpu *cpu) |
| 3912 | { |
| 3913 | /* instr [31] = 0 |
| 3914 | instr [30] = half (0)/full (1) |
| 3915 | instr [29,24] = 10 1110 |
| 3916 | instr [23] = max(0)/min(1) |
| 3917 | instr [22] = float (0)/double (1) |
| 3918 | instr [21] = 1 |
| 3919 | instr [20,16] = Vn |
| 3920 | instr [15,10] = 1100 01 |
| 3921 | instr [9,5] = Vm |
| 3922 | instr [4.0] = Vd. */ |
| 3923 | |
| 3924 | unsigned vm = INSTR (20, 16); |
| 3925 | unsigned vn = INSTR (9, 5); |
| 3926 | unsigned vd = INSTR (4, 0); |
| 3927 | int full = INSTR (30, 30); |
| 3928 | |
| 3929 | NYI_assert (29, 24, 0x2E); |
| 3930 | NYI_assert (21, 21, 1); |
| 3931 | NYI_assert (15, 10, 0x31); |
| 3932 | |
| 3933 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3934 | if (INSTR (22, 22)) |
| 3935 | { |
| 3936 | double (* fn)(double, double) = INSTR (23, 23) |
| 3937 | ? dminnm : dmaxnm; |
| 3938 | |
| 3939 | if (! full) |
| 3940 | HALT_NYI; |
| 3941 | aarch64_set_vec_double (cpu, vd, 0, |
| 3942 | fn (aarch64_get_vec_double (cpu, vn, 0), |
| 3943 | aarch64_get_vec_double (cpu, vn, 1))); |
| 3944 | aarch64_set_vec_double (cpu, vd, 0, |
| 3945 | fn (aarch64_get_vec_double (cpu, vm, 0), |
| 3946 | aarch64_get_vec_double (cpu, vm, 1))); |
| 3947 | } |
| 3948 | else |
| 3949 | { |
| 3950 | float (* fn)(float, float) = INSTR (23, 23) |
| 3951 | ? fminnm : fmaxnm; |
| 3952 | |
| 3953 | aarch64_set_vec_float (cpu, vd, 0, |
| 3954 | fn (aarch64_get_vec_float (cpu, vn, 0), |
| 3955 | aarch64_get_vec_float (cpu, vn, 1))); |
| 3956 | if (full) |
| 3957 | aarch64_set_vec_float (cpu, vd, 1, |
| 3958 | fn (aarch64_get_vec_float (cpu, vn, 2), |
| 3959 | aarch64_get_vec_float (cpu, vn, 3))); |
| 3960 | |
| 3961 | aarch64_set_vec_float (cpu, vd, (full ? 2 : 1), |
| 3962 | fn (aarch64_get_vec_float (cpu, vm, 0), |
| 3963 | aarch64_get_vec_float (cpu, vm, 1))); |
| 3964 | if (full) |
| 3965 | aarch64_set_vec_float (cpu, vd, 3, |
| 3966 | fn (aarch64_get_vec_float (cpu, vm, 2), |
| 3967 | aarch64_get_vec_float (cpu, vm, 3))); |
| 3968 | } |
| 3969 | } |
| 3970 | |
| 3971 | static void |
| 3972 | do_vec_AND (sim_cpu *cpu) |
| 3973 | { |
| 3974 | /* instr[31] = 0 |
| 3975 | instr[30] = half (0)/full (1) |
| 3976 | instr[29,21] = 001110001 |
| 3977 | instr[20,16] = Vm |
| 3978 | instr[15,10] = 000111 |
| 3979 | instr[9,5] = Vn |
| 3980 | instr[4.0] = Vd. */ |
| 3981 | |
| 3982 | unsigned vm = INSTR (20, 16); |
| 3983 | unsigned vn = INSTR (9, 5); |
| 3984 | unsigned vd = INSTR (4, 0); |
| 3985 | unsigned i; |
| 3986 | int full = INSTR (30, 30); |
| 3987 | |
| 3988 | NYI_assert (29, 21, 0x071); |
| 3989 | NYI_assert (15, 10, 0x07); |
| 3990 | |
| 3991 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 3992 | for (i = 0; i < (full ? 4 : 2); i++) |
| 3993 | aarch64_set_vec_u32 (cpu, vd, i, |
| 3994 | aarch64_get_vec_u32 (cpu, vn, i) |
| 3995 | & aarch64_get_vec_u32 (cpu, vm, i)); |
| 3996 | } |
| 3997 | |
| 3998 | static void |
| 3999 | do_vec_BSL (sim_cpu *cpu) |
| 4000 | { |
| 4001 | /* instr[31] = 0 |
| 4002 | instr[30] = half (0)/full (1) |
| 4003 | instr[29,21] = 101110011 |
| 4004 | instr[20,16] = Vm |
| 4005 | instr[15,10] = 000111 |
| 4006 | instr[9,5] = Vn |
| 4007 | instr[4.0] = Vd. */ |
| 4008 | |
| 4009 | unsigned vm = INSTR (20, 16); |
| 4010 | unsigned vn = INSTR (9, 5); |
| 4011 | unsigned vd = INSTR (4, 0); |
| 4012 | unsigned i; |
| 4013 | int full = INSTR (30, 30); |
| 4014 | |
| 4015 | NYI_assert (29, 21, 0x173); |
| 4016 | NYI_assert (15, 10, 0x07); |
| 4017 | |
| 4018 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4019 | for (i = 0; i < (full ? 16 : 8); i++) |
| 4020 | aarch64_set_vec_u8 (cpu, vd, i, |
| 4021 | ( aarch64_get_vec_u8 (cpu, vd, i) |
| 4022 | & aarch64_get_vec_u8 (cpu, vn, i)) |
| 4023 | | ((~ aarch64_get_vec_u8 (cpu, vd, i)) |
| 4024 | & aarch64_get_vec_u8 (cpu, vm, i))); |
| 4025 | } |
| 4026 | |
| 4027 | static void |
| 4028 | do_vec_EOR (sim_cpu *cpu) |
| 4029 | { |
| 4030 | /* instr[31] = 0 |
| 4031 | instr[30] = half (0)/full (1) |
| 4032 | instr[29,21] = 10 1110 001 |
| 4033 | instr[20,16] = Vm |
| 4034 | instr[15,10] = 000111 |
| 4035 | instr[9,5] = Vn |
| 4036 | instr[4.0] = Vd. */ |
| 4037 | |
| 4038 | unsigned vm = INSTR (20, 16); |
| 4039 | unsigned vn = INSTR (9, 5); |
| 4040 | unsigned vd = INSTR (4, 0); |
| 4041 | unsigned i; |
| 4042 | int full = INSTR (30, 30); |
| 4043 | |
| 4044 | NYI_assert (29, 21, 0x171); |
| 4045 | NYI_assert (15, 10, 0x07); |
| 4046 | |
| 4047 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4048 | for (i = 0; i < (full ? 4 : 2); i++) |
| 4049 | aarch64_set_vec_u32 (cpu, vd, i, |
| 4050 | aarch64_get_vec_u32 (cpu, vn, i) |
| 4051 | ^ aarch64_get_vec_u32 (cpu, vm, i)); |
| 4052 | } |
| 4053 | |
| 4054 | static void |
| 4055 | do_vec_bit (sim_cpu *cpu) |
| 4056 | { |
| 4057 | /* instr[31] = 0 |
| 4058 | instr[30] = half (0)/full (1) |
| 4059 | instr[29,23] = 10 1110 1 |
| 4060 | instr[22] = BIT (0) / BIF (1) |
| 4061 | instr[21] = 1 |
| 4062 | instr[20,16] = Vm |
| 4063 | instr[15,10] = 0001 11 |
| 4064 | instr[9,5] = Vn |
| 4065 | instr[4.0] = Vd. */ |
| 4066 | |
| 4067 | unsigned vm = INSTR (20, 16); |
| 4068 | unsigned vn = INSTR (9, 5); |
| 4069 | unsigned vd = INSTR (4, 0); |
| 4070 | unsigned full = INSTR (30, 30); |
| 4071 | unsigned test_false = INSTR (22, 22); |
| 4072 | unsigned i; |
| 4073 | |
| 4074 | NYI_assert (29, 23, 0x5D); |
| 4075 | NYI_assert (21, 21, 1); |
| 4076 | NYI_assert (15, 10, 0x07); |
| 4077 | |
| 4078 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4079 | if (test_false) |
| 4080 | { |
| 4081 | for (i = 0; i < (full ? 16 : 8); i++) |
| 4082 | if (aarch64_get_vec_u32 (cpu, vn, i) == 0) |
| 4083 | aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vm, i)); |
| 4084 | } |
| 4085 | else |
| 4086 | { |
| 4087 | for (i = 0; i < (full ? 16 : 8); i++) |
| 4088 | if (aarch64_get_vec_u32 (cpu, vn, i) != 0) |
| 4089 | aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vm, i)); |
| 4090 | } |
| 4091 | } |
| 4092 | |
| 4093 | static void |
| 4094 | do_vec_ORN (sim_cpu *cpu) |
| 4095 | { |
| 4096 | /* instr[31] = 0 |
| 4097 | instr[30] = half (0)/full (1) |
| 4098 | instr[29,21] = 00 1110 111 |
| 4099 | instr[20,16] = Vm |
| 4100 | instr[15,10] = 00 0111 |
| 4101 | instr[9,5] = Vn |
| 4102 | instr[4.0] = Vd. */ |
| 4103 | |
| 4104 | unsigned vm = INSTR (20, 16); |
| 4105 | unsigned vn = INSTR (9, 5); |
| 4106 | unsigned vd = INSTR (4, 0); |
| 4107 | unsigned i; |
| 4108 | int full = INSTR (30, 30); |
| 4109 | |
| 4110 | NYI_assert (29, 21, 0x077); |
| 4111 | NYI_assert (15, 10, 0x07); |
| 4112 | |
| 4113 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4114 | for (i = 0; i < (full ? 16 : 8); i++) |
| 4115 | aarch64_set_vec_u8 (cpu, vd, i, |
| 4116 | aarch64_get_vec_u8 (cpu, vn, i) |
| 4117 | | ~ aarch64_get_vec_u8 (cpu, vm, i)); |
| 4118 | } |
| 4119 | |
| 4120 | static void |
| 4121 | do_vec_ORR (sim_cpu *cpu) |
| 4122 | { |
| 4123 | /* instr[31] = 0 |
| 4124 | instr[30] = half (0)/full (1) |
| 4125 | instr[29,21] = 00 1110 101 |
| 4126 | instr[20,16] = Vm |
| 4127 | instr[15,10] = 0001 11 |
| 4128 | instr[9,5] = Vn |
| 4129 | instr[4.0] = Vd. */ |
| 4130 | |
| 4131 | unsigned vm = INSTR (20, 16); |
| 4132 | unsigned vn = INSTR (9, 5); |
| 4133 | unsigned vd = INSTR (4, 0); |
| 4134 | unsigned i; |
| 4135 | int full = INSTR (30, 30); |
| 4136 | |
| 4137 | NYI_assert (29, 21, 0x075); |
| 4138 | NYI_assert (15, 10, 0x07); |
| 4139 | |
| 4140 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4141 | for (i = 0; i < (full ? 16 : 8); i++) |
| 4142 | aarch64_set_vec_u8 (cpu, vd, i, |
| 4143 | aarch64_get_vec_u8 (cpu, vn, i) |
| 4144 | | aarch64_get_vec_u8 (cpu, vm, i)); |
| 4145 | } |
| 4146 | |
| 4147 | static void |
| 4148 | do_vec_BIC (sim_cpu *cpu) |
| 4149 | { |
| 4150 | /* instr[31] = 0 |
| 4151 | instr[30] = half (0)/full (1) |
| 4152 | instr[29,21] = 00 1110 011 |
| 4153 | instr[20,16] = Vm |
| 4154 | instr[15,10] = 00 0111 |
| 4155 | instr[9,5] = Vn |
| 4156 | instr[4.0] = Vd. */ |
| 4157 | |
| 4158 | unsigned vm = INSTR (20, 16); |
| 4159 | unsigned vn = INSTR (9, 5); |
| 4160 | unsigned vd = INSTR (4, 0); |
| 4161 | unsigned i; |
| 4162 | int full = INSTR (30, 30); |
| 4163 | |
| 4164 | NYI_assert (29, 21, 0x073); |
| 4165 | NYI_assert (15, 10, 0x07); |
| 4166 | |
| 4167 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4168 | for (i = 0; i < (full ? 16 : 8); i++) |
| 4169 | aarch64_set_vec_u8 (cpu, vd, i, |
| 4170 | aarch64_get_vec_u8 (cpu, vn, i) |
| 4171 | & ~ aarch64_get_vec_u8 (cpu, vm, i)); |
| 4172 | } |
| 4173 | |
| 4174 | static void |
| 4175 | do_vec_XTN (sim_cpu *cpu) |
| 4176 | { |
| 4177 | /* instr[31] = 0 |
| 4178 | instr[30] = first part (0)/ second part (1) |
| 4179 | instr[29,24] = 00 1110 |
| 4180 | instr[23,22] = size: byte(00), half(01), word (10) |
| 4181 | instr[21,10] = 1000 0100 1010 |
| 4182 | instr[9,5] = Vs |
| 4183 | instr[4,0] = Vd. */ |
| 4184 | |
| 4185 | unsigned vs = INSTR (9, 5); |
| 4186 | unsigned vd = INSTR (4, 0); |
| 4187 | unsigned bias = INSTR (30, 30); |
| 4188 | unsigned i; |
| 4189 | |
| 4190 | NYI_assert (29, 24, 0x0E); |
| 4191 | NYI_assert (21, 10, 0x84A); |
| 4192 | |
| 4193 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4194 | switch (INSTR (23, 22)) |
| 4195 | { |
| 4196 | case 0: |
| 4197 | if (bias) |
| 4198 | for (i = 0; i < 8; i++) |
| 4199 | aarch64_set_vec_u8 (cpu, vd, i + 8, |
| 4200 | aarch64_get_vec_u16 (cpu, vs, i) >> 8); |
| 4201 | else |
| 4202 | for (i = 0; i < 8; i++) |
| 4203 | aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vs, i)); |
| 4204 | return; |
| 4205 | |
| 4206 | case 1: |
| 4207 | if (bias) |
| 4208 | for (i = 0; i < 4; i++) |
| 4209 | aarch64_set_vec_u16 (cpu, vd, i + 4, |
| 4210 | aarch64_get_vec_u32 (cpu, vs, i) >> 16); |
| 4211 | else |
| 4212 | for (i = 0; i < 4; i++) |
| 4213 | aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vs, i)); |
| 4214 | return; |
| 4215 | |
| 4216 | case 2: |
| 4217 | if (bias) |
| 4218 | for (i = 0; i < 2; i++) |
| 4219 | aarch64_set_vec_u32 (cpu, vd, i + 4, |
| 4220 | aarch64_get_vec_u64 (cpu, vs, i) >> 32); |
| 4221 | else |
| 4222 | for (i = 0; i < 2; i++) |
| 4223 | aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u64 (cpu, vs, i)); |
| 4224 | return; |
| 4225 | } |
| 4226 | } |
| 4227 | |
| 4228 | static void |
| 4229 | do_vec_maxv (sim_cpu *cpu) |
| 4230 | { |
| 4231 | /* instr[31] = 0 |
| 4232 | instr[30] = half(0)/full(1) |
| 4233 | instr[29] = signed (0)/unsigned(1) |
| 4234 | instr[28,24] = 0 1110 |
| 4235 | instr[23,22] = size: byte(00), half(01), word (10) |
| 4236 | instr[21] = 1 |
| 4237 | instr[20,17] = 1 000 |
| 4238 | instr[16] = max(0)/min(1) |
| 4239 | instr[15,10] = 1010 10 |
| 4240 | instr[9,5] = V source |
| 4241 | instr[4.0] = R dest. */ |
| 4242 | |
| 4243 | unsigned vs = INSTR (9, 5); |
| 4244 | unsigned rd = INSTR (4, 0); |
| 4245 | unsigned full = INSTR (30, 30); |
| 4246 | unsigned i; |
| 4247 | |
| 4248 | NYI_assert (28, 24, 0x0E); |
| 4249 | NYI_assert (21, 21, 1); |
| 4250 | NYI_assert (20, 17, 8); |
| 4251 | NYI_assert (15, 10, 0x2A); |
| 4252 | |
| 4253 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4254 | switch ((INSTR (29, 29) << 1) | INSTR (16, 16)) |
| 4255 | { |
| 4256 | case 0: /* SMAXV. */ |
| 4257 | { |
| 4258 | int64_t smax; |
| 4259 | switch (INSTR (23, 22)) |
| 4260 | { |
| 4261 | case 0: |
| 4262 | smax = aarch64_get_vec_s8 (cpu, vs, 0); |
| 4263 | for (i = 1; i < (full ? 16 : 8); i++) |
| 4264 | smax = max (smax, aarch64_get_vec_s8 (cpu, vs, i)); |
| 4265 | break; |
| 4266 | case 1: |
| 4267 | smax = aarch64_get_vec_s16 (cpu, vs, 0); |
| 4268 | for (i = 1; i < (full ? 8 : 4); i++) |
| 4269 | smax = max (smax, aarch64_get_vec_s16 (cpu, vs, i)); |
| 4270 | break; |
| 4271 | case 2: |
| 4272 | smax = aarch64_get_vec_s32 (cpu, vs, 0); |
| 4273 | for (i = 1; i < (full ? 4 : 2); i++) |
| 4274 | smax = max (smax, aarch64_get_vec_s32 (cpu, vs, i)); |
| 4275 | break; |
| 4276 | case 3: |
| 4277 | HALT_UNALLOC; |
| 4278 | } |
| 4279 | aarch64_set_reg_s64 (cpu, rd, NO_SP, smax); |
| 4280 | return; |
| 4281 | } |
| 4282 | |
| 4283 | case 1: /* SMINV. */ |
| 4284 | { |
| 4285 | int64_t smin; |
| 4286 | switch (INSTR (23, 22)) |
| 4287 | { |
| 4288 | case 0: |
| 4289 | smin = aarch64_get_vec_s8 (cpu, vs, 0); |
| 4290 | for (i = 1; i < (full ? 16 : 8); i++) |
| 4291 | smin = min (smin, aarch64_get_vec_s8 (cpu, vs, i)); |
| 4292 | break; |
| 4293 | case 1: |
| 4294 | smin = aarch64_get_vec_s16 (cpu, vs, 0); |
| 4295 | for (i = 1; i < (full ? 8 : 4); i++) |
| 4296 | smin = min (smin, aarch64_get_vec_s16 (cpu, vs, i)); |
| 4297 | break; |
| 4298 | case 2: |
| 4299 | smin = aarch64_get_vec_s32 (cpu, vs, 0); |
| 4300 | for (i = 1; i < (full ? 4 : 2); i++) |
| 4301 | smin = min (smin, aarch64_get_vec_s32 (cpu, vs, i)); |
| 4302 | break; |
| 4303 | |
| 4304 | case 3: |
| 4305 | HALT_UNALLOC; |
| 4306 | } |
| 4307 | aarch64_set_reg_s64 (cpu, rd, NO_SP, smin); |
| 4308 | return; |
| 4309 | } |
| 4310 | |
| 4311 | case 2: /* UMAXV. */ |
| 4312 | { |
| 4313 | uint64_t umax; |
| 4314 | switch (INSTR (23, 22)) |
| 4315 | { |
| 4316 | case 0: |
| 4317 | umax = aarch64_get_vec_u8 (cpu, vs, 0); |
| 4318 | for (i = 1; i < (full ? 16 : 8); i++) |
| 4319 | umax = max (umax, aarch64_get_vec_u8 (cpu, vs, i)); |
| 4320 | break; |
| 4321 | case 1: |
| 4322 | umax = aarch64_get_vec_u16 (cpu, vs, 0); |
| 4323 | for (i = 1; i < (full ? 8 : 4); i++) |
| 4324 | umax = max (umax, aarch64_get_vec_u16 (cpu, vs, i)); |
| 4325 | break; |
| 4326 | case 2: |
| 4327 | umax = aarch64_get_vec_u32 (cpu, vs, 0); |
| 4328 | for (i = 1; i < (full ? 4 : 2); i++) |
| 4329 | umax = max (umax, aarch64_get_vec_u32 (cpu, vs, i)); |
| 4330 | break; |
| 4331 | |
| 4332 | case 3: |
| 4333 | HALT_UNALLOC; |
| 4334 | } |
| 4335 | aarch64_set_reg_u64 (cpu, rd, NO_SP, umax); |
| 4336 | return; |
| 4337 | } |
| 4338 | |
| 4339 | case 3: /* UMINV. */ |
| 4340 | { |
| 4341 | uint64_t umin; |
| 4342 | switch (INSTR (23, 22)) |
| 4343 | { |
| 4344 | case 0: |
| 4345 | umin = aarch64_get_vec_u8 (cpu, vs, 0); |
| 4346 | for (i = 1; i < (full ? 16 : 8); i++) |
| 4347 | umin = min (umin, aarch64_get_vec_u8 (cpu, vs, i)); |
| 4348 | break; |
| 4349 | case 1: |
| 4350 | umin = aarch64_get_vec_u16 (cpu, vs, 0); |
| 4351 | for (i = 1; i < (full ? 8 : 4); i++) |
| 4352 | umin = min (umin, aarch64_get_vec_u16 (cpu, vs, i)); |
| 4353 | break; |
| 4354 | case 2: |
| 4355 | umin = aarch64_get_vec_u32 (cpu, vs, 0); |
| 4356 | for (i = 1; i < (full ? 4 : 2); i++) |
| 4357 | umin = min (umin, aarch64_get_vec_u32 (cpu, vs, i)); |
| 4358 | break; |
| 4359 | |
| 4360 | case 3: |
| 4361 | HALT_UNALLOC; |
| 4362 | } |
| 4363 | aarch64_set_reg_u64 (cpu, rd, NO_SP, umin); |
| 4364 | return; |
| 4365 | } |
| 4366 | } |
| 4367 | } |
| 4368 | |
| 4369 | static void |
| 4370 | do_vec_fminmaxV (sim_cpu *cpu) |
| 4371 | { |
| 4372 | /* instr[31,24] = 0110 1110 |
| 4373 | instr[23] = max(0)/min(1) |
| 4374 | instr[22,14] = 011 0000 11 |
| 4375 | instr[13,12] = nm(00)/normal(11) |
| 4376 | instr[11,10] = 10 |
| 4377 | instr[9,5] = V source |
| 4378 | instr[4.0] = R dest. */ |
| 4379 | |
| 4380 | unsigned vs = INSTR (9, 5); |
| 4381 | unsigned rd = INSTR (4, 0); |
| 4382 | unsigned i; |
| 4383 | float res = aarch64_get_vec_float (cpu, vs, 0); |
| 4384 | |
| 4385 | NYI_assert (31, 24, 0x6E); |
| 4386 | NYI_assert (22, 14, 0x0C3); |
| 4387 | NYI_assert (11, 10, 2); |
| 4388 | |
| 4389 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4390 | if (INSTR (23, 23)) |
| 4391 | { |
| 4392 | switch (INSTR (13, 12)) |
| 4393 | { |
| 4394 | case 0: /* FMNINNMV. */ |
| 4395 | for (i = 1; i < 4; i++) |
| 4396 | res = fminnm (res, aarch64_get_vec_float (cpu, vs, i)); |
| 4397 | break; |
| 4398 | |
| 4399 | case 3: /* FMINV. */ |
| 4400 | for (i = 1; i < 4; i++) |
| 4401 | res = min (res, aarch64_get_vec_float (cpu, vs, i)); |
| 4402 | break; |
| 4403 | |
| 4404 | default: |
| 4405 | HALT_NYI; |
| 4406 | } |
| 4407 | } |
| 4408 | else |
| 4409 | { |
| 4410 | switch (INSTR (13, 12)) |
| 4411 | { |
| 4412 | case 0: /* FMNAXNMV. */ |
| 4413 | for (i = 1; i < 4; i++) |
| 4414 | res = fmaxnm (res, aarch64_get_vec_float (cpu, vs, i)); |
| 4415 | break; |
| 4416 | |
| 4417 | case 3: /* FMAXV. */ |
| 4418 | for (i = 1; i < 4; i++) |
| 4419 | res = max (res, aarch64_get_vec_float (cpu, vs, i)); |
| 4420 | break; |
| 4421 | |
| 4422 | default: |
| 4423 | HALT_NYI; |
| 4424 | } |
| 4425 | } |
| 4426 | |
| 4427 | aarch64_set_FP_float (cpu, rd, res); |
| 4428 | } |
| 4429 | |
| 4430 | static void |
| 4431 | do_vec_Fminmax (sim_cpu *cpu) |
| 4432 | { |
| 4433 | /* instr[31] = 0 |
| 4434 | instr[30] = half(0)/full(1) |
| 4435 | instr[29,24] = 00 1110 |
| 4436 | instr[23] = max(0)/min(1) |
| 4437 | instr[22] = float(0)/double(1) |
| 4438 | instr[21] = 1 |
| 4439 | instr[20,16] = Vm |
| 4440 | instr[15,14] = 11 |
| 4441 | instr[13,12] = nm(00)/normal(11) |
| 4442 | instr[11,10] = 01 |
| 4443 | instr[9,5] = Vn |
| 4444 | instr[4,0] = Vd. */ |
| 4445 | |
| 4446 | unsigned vm = INSTR (20, 16); |
| 4447 | unsigned vn = INSTR (9, 5); |
| 4448 | unsigned vd = INSTR (4, 0); |
| 4449 | unsigned full = INSTR (30, 30); |
| 4450 | unsigned min = INSTR (23, 23); |
| 4451 | unsigned i; |
| 4452 | |
| 4453 | NYI_assert (29, 24, 0x0E); |
| 4454 | NYI_assert (21, 21, 1); |
| 4455 | NYI_assert (15, 14, 3); |
| 4456 | NYI_assert (11, 10, 1); |
| 4457 | |
| 4458 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4459 | if (INSTR (22, 22)) |
| 4460 | { |
| 4461 | double (* func)(double, double); |
| 4462 | |
| 4463 | if (! full) |
| 4464 | HALT_NYI; |
| 4465 | |
| 4466 | if (INSTR (13, 12) == 0) |
| 4467 | func = min ? dminnm : dmaxnm; |
| 4468 | else if (INSTR (13, 12) == 3) |
| 4469 | func = min ? fmin : fmax; |
| 4470 | else |
| 4471 | HALT_NYI; |
| 4472 | |
| 4473 | for (i = 0; i < 2; i++) |
| 4474 | aarch64_set_vec_double (cpu, vd, i, |
| 4475 | func (aarch64_get_vec_double (cpu, vn, i), |
| 4476 | aarch64_get_vec_double (cpu, vm, i))); |
| 4477 | } |
| 4478 | else |
| 4479 | { |
| 4480 | float (* func)(float, float); |
| 4481 | |
| 4482 | if (INSTR (13, 12) == 0) |
| 4483 | func = min ? fminnm : fmaxnm; |
| 4484 | else if (INSTR (13, 12) == 3) |
| 4485 | func = min ? fminf : fmaxf; |
| 4486 | else |
| 4487 | HALT_NYI; |
| 4488 | |
| 4489 | for (i = 0; i < (full ? 4 : 2); i++) |
| 4490 | aarch64_set_vec_float (cpu, vd, i, |
| 4491 | func (aarch64_get_vec_float (cpu, vn, i), |
| 4492 | aarch64_get_vec_float (cpu, vm, i))); |
| 4493 | } |
| 4494 | } |
| 4495 | |
| 4496 | static void |
| 4497 | do_vec_SCVTF (sim_cpu *cpu) |
| 4498 | { |
| 4499 | /* instr[31] = 0 |
| 4500 | instr[30] = Q |
| 4501 | instr[29,23] = 00 1110 0 |
| 4502 | instr[22] = float(0)/double(1) |
| 4503 | instr[21,10] = 10 0001 1101 10 |
| 4504 | instr[9,5] = Vn |
| 4505 | instr[4,0] = Vd. */ |
| 4506 | |
| 4507 | unsigned vn = INSTR (9, 5); |
| 4508 | unsigned vd = INSTR (4, 0); |
| 4509 | unsigned full = INSTR (30, 30); |
| 4510 | unsigned size = INSTR (22, 22); |
| 4511 | unsigned i; |
| 4512 | |
| 4513 | NYI_assert (29, 23, 0x1C); |
| 4514 | NYI_assert (21, 10, 0x876); |
| 4515 | |
| 4516 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4517 | if (size) |
| 4518 | { |
| 4519 | if (! full) |
| 4520 | HALT_UNALLOC; |
| 4521 | |
| 4522 | for (i = 0; i < 2; i++) |
| 4523 | { |
| 4524 | double val = (double) aarch64_get_vec_u64 (cpu, vn, i); |
| 4525 | aarch64_set_vec_double (cpu, vd, i, val); |
| 4526 | } |
| 4527 | } |
| 4528 | else |
| 4529 | { |
| 4530 | for (i = 0; i < (full ? 4 : 2); i++) |
| 4531 | { |
| 4532 | float val = (float) aarch64_get_vec_u32 (cpu, vn, i); |
| 4533 | aarch64_set_vec_float (cpu, vd, i, val); |
| 4534 | } |
| 4535 | } |
| 4536 | } |
| 4537 | |
| 4538 | #define VEC_CMP(SOURCE, CMP) \ |
| 4539 | do \ |
| 4540 | { \ |
| 4541 | switch (size) \ |
| 4542 | { \ |
| 4543 | case 0: \ |
| 4544 | for (i = 0; i < (full ? 16 : 8); i++) \ |
| 4545 | aarch64_set_vec_u8 (cpu, vd, i, \ |
| 4546 | aarch64_get_vec_##SOURCE##8 (cpu, vn, i) \ |
| 4547 | CMP \ |
| 4548 | aarch64_get_vec_##SOURCE##8 (cpu, vm, i) \ |
| 4549 | ? -1 : 0); \ |
| 4550 | return; \ |
| 4551 | case 1: \ |
| 4552 | for (i = 0; i < (full ? 8 : 4); i++) \ |
| 4553 | aarch64_set_vec_u16 (cpu, vd, i, \ |
| 4554 | aarch64_get_vec_##SOURCE##16 (cpu, vn, i) \ |
| 4555 | CMP \ |
| 4556 | aarch64_get_vec_##SOURCE##16 (cpu, vm, i) \ |
| 4557 | ? -1 : 0); \ |
| 4558 | return; \ |
| 4559 | case 2: \ |
| 4560 | for (i = 0; i < (full ? 4 : 2); i++) \ |
| 4561 | aarch64_set_vec_u32 (cpu, vd, i, \ |
| 4562 | aarch64_get_vec_##SOURCE##32 (cpu, vn, i) \ |
| 4563 | CMP \ |
| 4564 | aarch64_get_vec_##SOURCE##32 (cpu, vm, i) \ |
| 4565 | ? -1 : 0); \ |
| 4566 | return; \ |
| 4567 | case 3: \ |
| 4568 | if (! full) \ |
| 4569 | HALT_UNALLOC; \ |
| 4570 | for (i = 0; i < 2; i++) \ |
| 4571 | aarch64_set_vec_u64 (cpu, vd, i, \ |
| 4572 | aarch64_get_vec_##SOURCE##64 (cpu, vn, i) \ |
| 4573 | CMP \ |
| 4574 | aarch64_get_vec_##SOURCE##64 (cpu, vm, i) \ |
| 4575 | ? -1ULL : 0); \ |
| 4576 | return; \ |
| 4577 | } \ |
| 4578 | } \ |
| 4579 | while (0) |
| 4580 | |
| 4581 | #define VEC_CMP0(SOURCE, CMP) \ |
| 4582 | do \ |
| 4583 | { \ |
| 4584 | switch (size) \ |
| 4585 | { \ |
| 4586 | case 0: \ |
| 4587 | for (i = 0; i < (full ? 16 : 8); i++) \ |
| 4588 | aarch64_set_vec_u8 (cpu, vd, i, \ |
| 4589 | aarch64_get_vec_##SOURCE##8 (cpu, vn, i) \ |
| 4590 | CMP 0 ? -1 : 0); \ |
| 4591 | return; \ |
| 4592 | case 1: \ |
| 4593 | for (i = 0; i < (full ? 8 : 4); i++) \ |
| 4594 | aarch64_set_vec_u16 (cpu, vd, i, \ |
| 4595 | aarch64_get_vec_##SOURCE##16 (cpu, vn, i) \ |
| 4596 | CMP 0 ? -1 : 0); \ |
| 4597 | return; \ |
| 4598 | case 2: \ |
| 4599 | for (i = 0; i < (full ? 4 : 2); i++) \ |
| 4600 | aarch64_set_vec_u32 (cpu, vd, i, \ |
| 4601 | aarch64_get_vec_##SOURCE##32 (cpu, vn, i) \ |
| 4602 | CMP 0 ? -1 : 0); \ |
| 4603 | return; \ |
| 4604 | case 3: \ |
| 4605 | if (! full) \ |
| 4606 | HALT_UNALLOC; \ |
| 4607 | for (i = 0; i < 2; i++) \ |
| 4608 | aarch64_set_vec_u64 (cpu, vd, i, \ |
| 4609 | aarch64_get_vec_##SOURCE##64 (cpu, vn, i) \ |
| 4610 | CMP 0 ? -1ULL : 0); \ |
| 4611 | return; \ |
| 4612 | } \ |
| 4613 | } \ |
| 4614 | while (0) |
| 4615 | |
| 4616 | #define VEC_FCMP0(CMP) \ |
| 4617 | do \ |
| 4618 | { \ |
| 4619 | if (vm != 0) \ |
| 4620 | HALT_NYI; \ |
| 4621 | if (INSTR (22, 22)) \ |
| 4622 | { \ |
| 4623 | if (! full) \ |
| 4624 | HALT_NYI; \ |
| 4625 | for (i = 0; i < 2; i++) \ |
| 4626 | aarch64_set_vec_u64 (cpu, vd, i, \ |
| 4627 | aarch64_get_vec_double (cpu, vn, i) \ |
| 4628 | CMP 0.0 ? -1 : 0); \ |
| 4629 | } \ |
| 4630 | else \ |
| 4631 | { \ |
| 4632 | for (i = 0; i < (full ? 4 : 2); i++) \ |
| 4633 | aarch64_set_vec_u32 (cpu, vd, i, \ |
| 4634 | aarch64_get_vec_float (cpu, vn, i) \ |
| 4635 | CMP 0.0 ? -1 : 0); \ |
| 4636 | } \ |
| 4637 | return; \ |
| 4638 | } \ |
| 4639 | while (0) |
| 4640 | |
| 4641 | #define VEC_FCMP(CMP) \ |
| 4642 | do \ |
| 4643 | { \ |
| 4644 | if (INSTR (22, 22)) \ |
| 4645 | { \ |
| 4646 | if (! full) \ |
| 4647 | HALT_NYI; \ |
| 4648 | for (i = 0; i < 2; i++) \ |
| 4649 | aarch64_set_vec_u64 (cpu, vd, i, \ |
| 4650 | aarch64_get_vec_double (cpu, vn, i) \ |
| 4651 | CMP \ |
| 4652 | aarch64_get_vec_double (cpu, vm, i) \ |
| 4653 | ? -1 : 0); \ |
| 4654 | } \ |
| 4655 | else \ |
| 4656 | { \ |
| 4657 | for (i = 0; i < (full ? 4 : 2); i++) \ |
| 4658 | aarch64_set_vec_u32 (cpu, vd, i, \ |
| 4659 | aarch64_get_vec_float (cpu, vn, i) \ |
| 4660 | CMP \ |
| 4661 | aarch64_get_vec_float (cpu, vm, i) \ |
| 4662 | ? -1 : 0); \ |
| 4663 | } \ |
| 4664 | return; \ |
| 4665 | } \ |
| 4666 | while (0) |
| 4667 | |
| 4668 | static void |
| 4669 | do_vec_compare (sim_cpu *cpu) |
| 4670 | { |
| 4671 | /* instr[31] = 0 |
| 4672 | instr[30] = half(0)/full(1) |
| 4673 | instr[29] = part-of-comparison-type |
| 4674 | instr[28,24] = 0 1110 |
| 4675 | instr[23,22] = size of integer compares: byte(00), half(01), word (10), long (11) |
| 4676 | type of float compares: single (-0) / double (-1) |
| 4677 | instr[21] = 1 |
| 4678 | instr[20,16] = Vm or 00000 (compare vs 0) |
| 4679 | instr[15,10] = part-of-comparison-type |
| 4680 | instr[9,5] = Vn |
| 4681 | instr[4.0] = Vd. */ |
| 4682 | |
| 4683 | int full = INSTR (30, 30); |
| 4684 | int size = INSTR (23, 22); |
| 4685 | unsigned vm = INSTR (20, 16); |
| 4686 | unsigned vn = INSTR (9, 5); |
| 4687 | unsigned vd = INSTR (4, 0); |
| 4688 | unsigned i; |
| 4689 | |
| 4690 | NYI_assert (28, 24, 0x0E); |
| 4691 | NYI_assert (21, 21, 1); |
| 4692 | |
| 4693 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4694 | if ((INSTR (11, 11) |
| 4695 | && INSTR (14, 14)) |
| 4696 | || ((INSTR (11, 11) == 0 |
| 4697 | && INSTR (10, 10) == 0))) |
| 4698 | { |
| 4699 | /* A compare vs 0. */ |
| 4700 | if (vm != 0) |
| 4701 | { |
| 4702 | if (INSTR (15, 10) == 0x2A) |
| 4703 | do_vec_maxv (cpu); |
| 4704 | else if (INSTR (15, 10) == 0x32 |
| 4705 | || INSTR (15, 10) == 0x3E) |
| 4706 | do_vec_fminmaxV (cpu); |
| 4707 | else if (INSTR (29, 23) == 0x1C |
| 4708 | && INSTR (21, 10) == 0x876) |
| 4709 | do_vec_SCVTF (cpu); |
| 4710 | else |
| 4711 | HALT_NYI; |
| 4712 | return; |
| 4713 | } |
| 4714 | } |
| 4715 | |
| 4716 | if (INSTR (14, 14)) |
| 4717 | { |
| 4718 | /* A floating point compare. */ |
| 4719 | unsigned decode = (INSTR (29, 29) << 5) | (INSTR (23, 23) << 4) |
| 4720 | | INSTR (13, 10); |
| 4721 | |
| 4722 | NYI_assert (15, 15, 1); |
| 4723 | |
| 4724 | switch (decode) |
| 4725 | { |
| 4726 | case /* 0b010010: GT#0 */ 0x12: VEC_FCMP0 (>); |
| 4727 | case /* 0b110010: GE#0 */ 0x32: VEC_FCMP0 (>=); |
| 4728 | case /* 0b010110: EQ#0 */ 0x16: VEC_FCMP0 (==); |
| 4729 | case /* 0b110110: LE#0 */ 0x36: VEC_FCMP0 (<=); |
| 4730 | case /* 0b011010: LT#0 */ 0x1A: VEC_FCMP0 (<); |
| 4731 | case /* 0b111001: GT */ 0x39: VEC_FCMP (>); |
| 4732 | case /* 0b101001: GE */ 0x29: VEC_FCMP (>=); |
| 4733 | case /* 0b001001: EQ */ 0x09: VEC_FCMP (==); |
| 4734 | |
| 4735 | default: |
| 4736 | HALT_NYI; |
| 4737 | } |
| 4738 | } |
| 4739 | else |
| 4740 | { |
| 4741 | unsigned decode = (INSTR (29, 29) << 6) | INSTR (15, 10); |
| 4742 | |
| 4743 | switch (decode) |
| 4744 | { |
| 4745 | case 0x0D: /* 0001101 GT */ VEC_CMP (s, > ); |
| 4746 | case 0x0F: /* 0001111 GE */ VEC_CMP (s, >= ); |
| 4747 | case 0x22: /* 0100010 GT #0 */ VEC_CMP0 (s, > ); |
| 4748 | case 0x26: /* 0100110 EQ #0 */ VEC_CMP0 (s, == ); |
| 4749 | case 0x2A: /* 0101010 LT #0 */ VEC_CMP0 (s, < ); |
| 4750 | case 0x4D: /* 1001101 HI */ VEC_CMP (u, > ); |
| 4751 | case 0x4F: /* 1001111 HS */ VEC_CMP (u, >= ); |
| 4752 | case 0x62: /* 1100010 GE #0 */ VEC_CMP0 (s, >= ); |
| 4753 | case 0x63: /* 1100011 EQ */ VEC_CMP (u, == ); |
| 4754 | case 0x66: /* 1100110 LE #0 */ VEC_CMP0 (s, <= ); |
| 4755 | default: |
| 4756 | if (vm == 0) |
| 4757 | HALT_NYI; |
| 4758 | do_vec_maxv (cpu); |
| 4759 | } |
| 4760 | } |
| 4761 | } |
| 4762 | |
| 4763 | static void |
| 4764 | do_vec_SSHL (sim_cpu *cpu) |
| 4765 | { |
| 4766 | /* instr[31] = 0 |
| 4767 | instr[30] = first part (0)/ second part (1) |
| 4768 | instr[29,24] = 00 1110 |
| 4769 | instr[23,22] = size: byte(00), half(01), word (10), long (11) |
| 4770 | instr[21] = 1 |
| 4771 | instr[20,16] = Vm |
| 4772 | instr[15,10] = 0100 01 |
| 4773 | instr[9,5] = Vn |
| 4774 | instr[4,0] = Vd. */ |
| 4775 | |
| 4776 | unsigned full = INSTR (30, 30); |
| 4777 | unsigned vm = INSTR (20, 16); |
| 4778 | unsigned vn = INSTR (9, 5); |
| 4779 | unsigned vd = INSTR (4, 0); |
| 4780 | unsigned i; |
| 4781 | signed int shift; |
| 4782 | |
| 4783 | NYI_assert (29, 24, 0x0E); |
| 4784 | NYI_assert (21, 21, 1); |
| 4785 | NYI_assert (15, 10, 0x11); |
| 4786 | |
| 4787 | /* FIXME: What is a signed shift left in this context ?. */ |
| 4788 | |
| 4789 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4790 | switch (INSTR (23, 22)) |
| 4791 | { |
| 4792 | case 0: |
| 4793 | for (i = 0; i < (full ? 16 : 8); i++) |
| 4794 | { |
| 4795 | shift = aarch64_get_vec_s8 (cpu, vm, i); |
| 4796 | if (shift >= 0) |
| 4797 | aarch64_set_vec_s8 (cpu, vd, i, aarch64_get_vec_s8 (cpu, vn, i) |
| 4798 | << shift); |
| 4799 | else |
| 4800 | aarch64_set_vec_s8 (cpu, vd, i, aarch64_get_vec_s8 (cpu, vn, i) |
| 4801 | >> - shift); |
| 4802 | } |
| 4803 | return; |
| 4804 | |
| 4805 | case 1: |
| 4806 | for (i = 0; i < (full ? 8 : 4); i++) |
| 4807 | { |
| 4808 | shift = aarch64_get_vec_s8 (cpu, vm, i * 2); |
| 4809 | if (shift >= 0) |
| 4810 | aarch64_set_vec_s16 (cpu, vd, i, aarch64_get_vec_s16 (cpu, vn, i) |
| 4811 | << shift); |
| 4812 | else |
| 4813 | aarch64_set_vec_s16 (cpu, vd, i, aarch64_get_vec_s16 (cpu, vn, i) |
| 4814 | >> - shift); |
| 4815 | } |
| 4816 | return; |
| 4817 | |
| 4818 | case 2: |
| 4819 | for (i = 0; i < (full ? 4 : 2); i++) |
| 4820 | { |
| 4821 | shift = aarch64_get_vec_s8 (cpu, vm, i * 4); |
| 4822 | if (shift >= 0) |
| 4823 | aarch64_set_vec_s32 (cpu, vd, i, aarch64_get_vec_s32 (cpu, vn, i) |
| 4824 | << shift); |
| 4825 | else |
| 4826 | aarch64_set_vec_s32 (cpu, vd, i, aarch64_get_vec_s32 (cpu, vn, i) |
| 4827 | >> - shift); |
| 4828 | } |
| 4829 | return; |
| 4830 | |
| 4831 | case 3: |
| 4832 | if (! full) |
| 4833 | HALT_UNALLOC; |
| 4834 | for (i = 0; i < 2; i++) |
| 4835 | { |
| 4836 | shift = aarch64_get_vec_s8 (cpu, vm, i * 8); |
| 4837 | if (shift >= 0) |
| 4838 | aarch64_set_vec_s64 (cpu, vd, i, aarch64_get_vec_s64 (cpu, vn, i) |
| 4839 | << shift); |
| 4840 | else |
| 4841 | aarch64_set_vec_s64 (cpu, vd, i, aarch64_get_vec_s64 (cpu, vn, i) |
| 4842 | >> - shift); |
| 4843 | } |
| 4844 | return; |
| 4845 | } |
| 4846 | } |
| 4847 | |
| 4848 | static void |
| 4849 | do_vec_USHL (sim_cpu *cpu) |
| 4850 | { |
| 4851 | /* instr[31] = 0 |
| 4852 | instr[30] = first part (0)/ second part (1) |
| 4853 | instr[29,24] = 10 1110 |
| 4854 | instr[23,22] = size: byte(00), half(01), word (10), long (11) |
| 4855 | instr[21] = 1 |
| 4856 | instr[20,16] = Vm |
| 4857 | instr[15,10] = 0100 01 |
| 4858 | instr[9,5] = Vn |
| 4859 | instr[4,0] = Vd */ |
| 4860 | |
| 4861 | unsigned full = INSTR (30, 30); |
| 4862 | unsigned vm = INSTR (20, 16); |
| 4863 | unsigned vn = INSTR (9, 5); |
| 4864 | unsigned vd = INSTR (4, 0); |
| 4865 | unsigned i; |
| 4866 | signed int shift; |
| 4867 | |
| 4868 | NYI_assert (29, 24, 0x2E); |
| 4869 | NYI_assert (15, 10, 0x11); |
| 4870 | |
| 4871 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4872 | switch (INSTR (23, 22)) |
| 4873 | { |
| 4874 | case 0: |
| 4875 | for (i = 0; i < (full ? 16 : 8); i++) |
| 4876 | { |
| 4877 | shift = aarch64_get_vec_s8 (cpu, vm, i); |
| 4878 | if (shift >= 0) |
| 4879 | aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u8 (cpu, vn, i) |
| 4880 | << shift); |
| 4881 | else |
| 4882 | aarch64_set_vec_u8 (cpu, vd, i, aarch64_get_vec_u8 (cpu, vn, i) |
| 4883 | >> - shift); |
| 4884 | } |
| 4885 | return; |
| 4886 | |
| 4887 | case 1: |
| 4888 | for (i = 0; i < (full ? 8 : 4); i++) |
| 4889 | { |
| 4890 | shift = aarch64_get_vec_s8 (cpu, vm, i * 2); |
| 4891 | if (shift >= 0) |
| 4892 | aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vn, i) |
| 4893 | << shift); |
| 4894 | else |
| 4895 | aarch64_set_vec_u16 (cpu, vd, i, aarch64_get_vec_u16 (cpu, vn, i) |
| 4896 | >> - shift); |
| 4897 | } |
| 4898 | return; |
| 4899 | |
| 4900 | case 2: |
| 4901 | for (i = 0; i < (full ? 4 : 2); i++) |
| 4902 | { |
| 4903 | shift = aarch64_get_vec_s8 (cpu, vm, i * 4); |
| 4904 | if (shift >= 0) |
| 4905 | aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vn, i) |
| 4906 | << shift); |
| 4907 | else |
| 4908 | aarch64_set_vec_u32 (cpu, vd, i, aarch64_get_vec_u32 (cpu, vn, i) |
| 4909 | >> - shift); |
| 4910 | } |
| 4911 | return; |
| 4912 | |
| 4913 | case 3: |
| 4914 | if (! full) |
| 4915 | HALT_UNALLOC; |
| 4916 | for (i = 0; i < 2; i++) |
| 4917 | { |
| 4918 | shift = aarch64_get_vec_s8 (cpu, vm, i * 8); |
| 4919 | if (shift >= 0) |
| 4920 | aarch64_set_vec_u64 (cpu, vd, i, aarch64_get_vec_u64 (cpu, vn, i) |
| 4921 | << shift); |
| 4922 | else |
| 4923 | aarch64_set_vec_u64 (cpu, vd, i, aarch64_get_vec_u64 (cpu, vn, i) |
| 4924 | >> - shift); |
| 4925 | } |
| 4926 | return; |
| 4927 | } |
| 4928 | } |
| 4929 | |
| 4930 | static void |
| 4931 | do_vec_FMLA (sim_cpu *cpu) |
| 4932 | { |
| 4933 | /* instr[31] = 0 |
| 4934 | instr[30] = full/half selector |
| 4935 | instr[29,23] = 0011100 |
| 4936 | instr[22] = size: 0=>float, 1=>double |
| 4937 | instr[21] = 1 |
| 4938 | instr[20,16] = Vn |
| 4939 | instr[15,10] = 1100 11 |
| 4940 | instr[9,5] = Vm |
| 4941 | instr[4.0] = Vd. */ |
| 4942 | |
| 4943 | unsigned vm = INSTR (20, 16); |
| 4944 | unsigned vn = INSTR (9, 5); |
| 4945 | unsigned vd = INSTR (4, 0); |
| 4946 | unsigned i; |
| 4947 | int full = INSTR (30, 30); |
| 4948 | |
| 4949 | NYI_assert (29, 23, 0x1C); |
| 4950 | NYI_assert (21, 21, 1); |
| 4951 | NYI_assert (15, 10, 0x33); |
| 4952 | |
| 4953 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4954 | if (INSTR (22, 22)) |
| 4955 | { |
| 4956 | if (! full) |
| 4957 | HALT_UNALLOC; |
| 4958 | for (i = 0; i < 2; i++) |
| 4959 | aarch64_set_vec_double (cpu, vd, i, |
| 4960 | aarch64_get_vec_double (cpu, vn, i) * |
| 4961 | aarch64_get_vec_double (cpu, vm, i) + |
| 4962 | aarch64_get_vec_double (cpu, vd, i)); |
| 4963 | } |
| 4964 | else |
| 4965 | { |
| 4966 | for (i = 0; i < (full ? 4 : 2); i++) |
| 4967 | aarch64_set_vec_float (cpu, vd, i, |
| 4968 | aarch64_get_vec_float (cpu, vn, i) * |
| 4969 | aarch64_get_vec_float (cpu, vm, i) + |
| 4970 | aarch64_get_vec_float (cpu, vd, i)); |
| 4971 | } |
| 4972 | } |
| 4973 | |
| 4974 | static void |
| 4975 | do_vec_max (sim_cpu *cpu) |
| 4976 | { |
| 4977 | /* instr[31] = 0 |
| 4978 | instr[30] = full/half selector |
| 4979 | instr[29] = SMAX (0) / UMAX (1) |
| 4980 | instr[28,24] = 0 1110 |
| 4981 | instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit |
| 4982 | instr[21] = 1 |
| 4983 | instr[20,16] = Vn |
| 4984 | instr[15,10] = 0110 01 |
| 4985 | instr[9,5] = Vm |
| 4986 | instr[4.0] = Vd. */ |
| 4987 | |
| 4988 | unsigned vm = INSTR (20, 16); |
| 4989 | unsigned vn = INSTR (9, 5); |
| 4990 | unsigned vd = INSTR (4, 0); |
| 4991 | unsigned i; |
| 4992 | int full = INSTR (30, 30); |
| 4993 | |
| 4994 | NYI_assert (28, 24, 0x0E); |
| 4995 | NYI_assert (21, 21, 1); |
| 4996 | NYI_assert (15, 10, 0x19); |
| 4997 | |
| 4998 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 4999 | if (INSTR (29, 29)) |
| 5000 | { |
| 5001 | switch (INSTR (23, 22)) |
| 5002 | { |
| 5003 | case 0: |
| 5004 | for (i = 0; i < (full ? 16 : 8); i++) |
| 5005 | aarch64_set_vec_u8 (cpu, vd, i, |
| 5006 | aarch64_get_vec_u8 (cpu, vn, i) |
| 5007 | > aarch64_get_vec_u8 (cpu, vm, i) |
| 5008 | ? aarch64_get_vec_u8 (cpu, vn, i) |
| 5009 | : aarch64_get_vec_u8 (cpu, vm, i)); |
| 5010 | return; |
| 5011 | |
| 5012 | case 1: |
| 5013 | for (i = 0; i < (full ? 8 : 4); i++) |
| 5014 | aarch64_set_vec_u16 (cpu, vd, i, |
| 5015 | aarch64_get_vec_u16 (cpu, vn, i) |
| 5016 | > aarch64_get_vec_u16 (cpu, vm, i) |
| 5017 | ? aarch64_get_vec_u16 (cpu, vn, i) |
| 5018 | : aarch64_get_vec_u16 (cpu, vm, i)); |
| 5019 | return; |
| 5020 | |
| 5021 | case 2: |
| 5022 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5023 | aarch64_set_vec_u32 (cpu, vd, i, |
| 5024 | aarch64_get_vec_u32 (cpu, vn, i) |
| 5025 | > aarch64_get_vec_u32 (cpu, vm, i) |
| 5026 | ? aarch64_get_vec_u32 (cpu, vn, i) |
| 5027 | : aarch64_get_vec_u32 (cpu, vm, i)); |
| 5028 | return; |
| 5029 | |
| 5030 | case 3: |
| 5031 | HALT_UNALLOC; |
| 5032 | } |
| 5033 | } |
| 5034 | else |
| 5035 | { |
| 5036 | switch (INSTR (23, 22)) |
| 5037 | { |
| 5038 | case 0: |
| 5039 | for (i = 0; i < (full ? 16 : 8); i++) |
| 5040 | aarch64_set_vec_s8 (cpu, vd, i, |
| 5041 | aarch64_get_vec_s8 (cpu, vn, i) |
| 5042 | > aarch64_get_vec_s8 (cpu, vm, i) |
| 5043 | ? aarch64_get_vec_s8 (cpu, vn, i) |
| 5044 | : aarch64_get_vec_s8 (cpu, vm, i)); |
| 5045 | return; |
| 5046 | |
| 5047 | case 1: |
| 5048 | for (i = 0; i < (full ? 8 : 4); i++) |
| 5049 | aarch64_set_vec_s16 (cpu, vd, i, |
| 5050 | aarch64_get_vec_s16 (cpu, vn, i) |
| 5051 | > aarch64_get_vec_s16 (cpu, vm, i) |
| 5052 | ? aarch64_get_vec_s16 (cpu, vn, i) |
| 5053 | : aarch64_get_vec_s16 (cpu, vm, i)); |
| 5054 | return; |
| 5055 | |
| 5056 | case 2: |
| 5057 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5058 | aarch64_set_vec_s32 (cpu, vd, i, |
| 5059 | aarch64_get_vec_s32 (cpu, vn, i) |
| 5060 | > aarch64_get_vec_s32 (cpu, vm, i) |
| 5061 | ? aarch64_get_vec_s32 (cpu, vn, i) |
| 5062 | : aarch64_get_vec_s32 (cpu, vm, i)); |
| 5063 | return; |
| 5064 | |
| 5065 | case 3: |
| 5066 | HALT_UNALLOC; |
| 5067 | } |
| 5068 | } |
| 5069 | } |
| 5070 | |
| 5071 | static void |
| 5072 | do_vec_min (sim_cpu *cpu) |
| 5073 | { |
| 5074 | /* instr[31] = 0 |
| 5075 | instr[30] = full/half selector |
| 5076 | instr[29] = SMIN (0) / UMIN (1) |
| 5077 | instr[28,24] = 0 1110 |
| 5078 | instr[23,22] = size: 00=> 8-bit, 01=> 16-bit, 10=> 32-bit |
| 5079 | instr[21] = 1 |
| 5080 | instr[20,16] = Vn |
| 5081 | instr[15,10] = 0110 11 |
| 5082 | instr[9,5] = Vm |
| 5083 | instr[4.0] = Vd. */ |
| 5084 | |
| 5085 | unsigned vm = INSTR (20, 16); |
| 5086 | unsigned vn = INSTR (9, 5); |
| 5087 | unsigned vd = INSTR (4, 0); |
| 5088 | unsigned i; |
| 5089 | int full = INSTR (30, 30); |
| 5090 | |
| 5091 | NYI_assert (28, 24, 0x0E); |
| 5092 | NYI_assert (21, 21, 1); |
| 5093 | NYI_assert (15, 10, 0x1B); |
| 5094 | |
| 5095 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5096 | if (INSTR (29, 29)) |
| 5097 | { |
| 5098 | switch (INSTR (23, 22)) |
| 5099 | { |
| 5100 | case 0: |
| 5101 | for (i = 0; i < (full ? 16 : 8); i++) |
| 5102 | aarch64_set_vec_u8 (cpu, vd, i, |
| 5103 | aarch64_get_vec_u8 (cpu, vn, i) |
| 5104 | < aarch64_get_vec_u8 (cpu, vm, i) |
| 5105 | ? aarch64_get_vec_u8 (cpu, vn, i) |
| 5106 | : aarch64_get_vec_u8 (cpu, vm, i)); |
| 5107 | return; |
| 5108 | |
| 5109 | case 1: |
| 5110 | for (i = 0; i < (full ? 8 : 4); i++) |
| 5111 | aarch64_set_vec_u16 (cpu, vd, i, |
| 5112 | aarch64_get_vec_u16 (cpu, vn, i) |
| 5113 | < aarch64_get_vec_u16 (cpu, vm, i) |
| 5114 | ? aarch64_get_vec_u16 (cpu, vn, i) |
| 5115 | : aarch64_get_vec_u16 (cpu, vm, i)); |
| 5116 | return; |
| 5117 | |
| 5118 | case 2: |
| 5119 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5120 | aarch64_set_vec_u32 (cpu, vd, i, |
| 5121 | aarch64_get_vec_u32 (cpu, vn, i) |
| 5122 | < aarch64_get_vec_u32 (cpu, vm, i) |
| 5123 | ? aarch64_get_vec_u32 (cpu, vn, i) |
| 5124 | : aarch64_get_vec_u32 (cpu, vm, i)); |
| 5125 | return; |
| 5126 | |
| 5127 | case 3: |
| 5128 | HALT_UNALLOC; |
| 5129 | } |
| 5130 | } |
| 5131 | else |
| 5132 | { |
| 5133 | switch (INSTR (23, 22)) |
| 5134 | { |
| 5135 | case 0: |
| 5136 | for (i = 0; i < (full ? 16 : 8); i++) |
| 5137 | aarch64_set_vec_s8 (cpu, vd, i, |
| 5138 | aarch64_get_vec_s8 (cpu, vn, i) |
| 5139 | < aarch64_get_vec_s8 (cpu, vm, i) |
| 5140 | ? aarch64_get_vec_s8 (cpu, vn, i) |
| 5141 | : aarch64_get_vec_s8 (cpu, vm, i)); |
| 5142 | return; |
| 5143 | |
| 5144 | case 1: |
| 5145 | for (i = 0; i < (full ? 8 : 4); i++) |
| 5146 | aarch64_set_vec_s16 (cpu, vd, i, |
| 5147 | aarch64_get_vec_s16 (cpu, vn, i) |
| 5148 | < aarch64_get_vec_s16 (cpu, vm, i) |
| 5149 | ? aarch64_get_vec_s16 (cpu, vn, i) |
| 5150 | : aarch64_get_vec_s16 (cpu, vm, i)); |
| 5151 | return; |
| 5152 | |
| 5153 | case 2: |
| 5154 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5155 | aarch64_set_vec_s32 (cpu, vd, i, |
| 5156 | aarch64_get_vec_s32 (cpu, vn, i) |
| 5157 | < aarch64_get_vec_s32 (cpu, vm, i) |
| 5158 | ? aarch64_get_vec_s32 (cpu, vn, i) |
| 5159 | : aarch64_get_vec_s32 (cpu, vm, i)); |
| 5160 | return; |
| 5161 | |
| 5162 | case 3: |
| 5163 | HALT_UNALLOC; |
| 5164 | } |
| 5165 | } |
| 5166 | } |
| 5167 | |
| 5168 | static void |
| 5169 | do_vec_sub_long (sim_cpu *cpu) |
| 5170 | { |
| 5171 | /* instr[31] = 0 |
| 5172 | instr[30] = lower (0) / upper (1) |
| 5173 | instr[29] = signed (0) / unsigned (1) |
| 5174 | instr[28,24] = 0 1110 |
| 5175 | instr[23,22] = size: bytes (00), half (01), word (10) |
| 5176 | instr[21] = 1 |
| 5177 | insrt[20,16] = Vm |
| 5178 | instr[15,10] = 0010 00 |
| 5179 | instr[9,5] = Vn |
| 5180 | instr[4,0] = V dest. */ |
| 5181 | |
| 5182 | unsigned size = INSTR (23, 22); |
| 5183 | unsigned vm = INSTR (20, 16); |
| 5184 | unsigned vn = INSTR (9, 5); |
| 5185 | unsigned vd = INSTR (4, 0); |
| 5186 | unsigned bias = 0; |
| 5187 | unsigned i; |
| 5188 | |
| 5189 | NYI_assert (28, 24, 0x0E); |
| 5190 | NYI_assert (21, 21, 1); |
| 5191 | NYI_assert (15, 10, 0x08); |
| 5192 | |
| 5193 | if (size == 3) |
| 5194 | HALT_UNALLOC; |
| 5195 | |
| 5196 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5197 | switch (INSTR (30, 29)) |
| 5198 | { |
| 5199 | case 2: /* SSUBL2. */ |
| 5200 | bias = 2; |
| 5201 | case 0: /* SSUBL. */ |
| 5202 | switch (size) |
| 5203 | { |
| 5204 | case 0: |
| 5205 | bias *= 3; |
| 5206 | for (i = 0; i < 8; i++) |
| 5207 | aarch64_set_vec_s16 (cpu, vd, i, |
| 5208 | aarch64_get_vec_s8 (cpu, vn, i + bias) |
| 5209 | - aarch64_get_vec_s8 (cpu, vm, i + bias)); |
| 5210 | break; |
| 5211 | |
| 5212 | case 1: |
| 5213 | bias *= 2; |
| 5214 | for (i = 0; i < 4; i++) |
| 5215 | aarch64_set_vec_s32 (cpu, vd, i, |
| 5216 | aarch64_get_vec_s16 (cpu, vn, i + bias) |
| 5217 | - aarch64_get_vec_s16 (cpu, vm, i + bias)); |
| 5218 | break; |
| 5219 | |
| 5220 | case 2: |
| 5221 | for (i = 0; i < 2; i++) |
| 5222 | aarch64_set_vec_s64 (cpu, vd, i, |
| 5223 | aarch64_get_vec_s32 (cpu, vn, i + bias) |
| 5224 | - aarch64_get_vec_s32 (cpu, vm, i + bias)); |
| 5225 | break; |
| 5226 | |
| 5227 | default: |
| 5228 | HALT_UNALLOC; |
| 5229 | } |
| 5230 | break; |
| 5231 | |
| 5232 | case 3: /* USUBL2. */ |
| 5233 | bias = 2; |
| 5234 | case 1: /* USUBL. */ |
| 5235 | switch (size) |
| 5236 | { |
| 5237 | case 0: |
| 5238 | bias *= 3; |
| 5239 | for (i = 0; i < 8; i++) |
| 5240 | aarch64_set_vec_u16 (cpu, vd, i, |
| 5241 | aarch64_get_vec_u8 (cpu, vn, i + bias) |
| 5242 | - aarch64_get_vec_u8 (cpu, vm, i + bias)); |
| 5243 | break; |
| 5244 | |
| 5245 | case 1: |
| 5246 | bias *= 2; |
| 5247 | for (i = 0; i < 4; i++) |
| 5248 | aarch64_set_vec_u32 (cpu, vd, i, |
| 5249 | aarch64_get_vec_u16 (cpu, vn, i + bias) |
| 5250 | - aarch64_get_vec_u16 (cpu, vm, i + bias)); |
| 5251 | break; |
| 5252 | |
| 5253 | case 2: |
| 5254 | for (i = 0; i < 2; i++) |
| 5255 | aarch64_set_vec_u64 (cpu, vd, i, |
| 5256 | aarch64_get_vec_u32 (cpu, vn, i + bias) |
| 5257 | - aarch64_get_vec_u32 (cpu, vm, i + bias)); |
| 5258 | break; |
| 5259 | |
| 5260 | default: |
| 5261 | HALT_UNALLOC; |
| 5262 | } |
| 5263 | break; |
| 5264 | } |
| 5265 | } |
| 5266 | |
| 5267 | static void |
| 5268 | do_vec_ADDP (sim_cpu *cpu) |
| 5269 | { |
| 5270 | /* instr[31] = 0 |
| 5271 | instr[30] = half(0)/full(1) |
| 5272 | instr[29,24] = 00 1110 |
| 5273 | instr[23,22] = size: bytes (00), half (01), word (10), long (11) |
| 5274 | instr[21] = 1 |
| 5275 | insrt[20,16] = Vm |
| 5276 | instr[15,10] = 1011 11 |
| 5277 | instr[9,5] = Vn |
| 5278 | instr[4,0] = V dest. */ |
| 5279 | |
| 5280 | FRegister copy_vn; |
| 5281 | FRegister copy_vm; |
| 5282 | unsigned full = INSTR (30, 30); |
| 5283 | unsigned size = INSTR (23, 22); |
| 5284 | unsigned vm = INSTR (20, 16); |
| 5285 | unsigned vn = INSTR (9, 5); |
| 5286 | unsigned vd = INSTR (4, 0); |
| 5287 | unsigned i, range; |
| 5288 | |
| 5289 | NYI_assert (29, 24, 0x0E); |
| 5290 | NYI_assert (21, 21, 1); |
| 5291 | NYI_assert (15, 10, 0x2F); |
| 5292 | |
| 5293 | /* Make copies of the source registers in case vd == vn/vm. */ |
| 5294 | copy_vn = cpu->fr[vn]; |
| 5295 | copy_vm = cpu->fr[vm]; |
| 5296 | |
| 5297 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5298 | switch (size) |
| 5299 | { |
| 5300 | case 0: |
| 5301 | range = full ? 8 : 4; |
| 5302 | for (i = 0; i < range; i++) |
| 5303 | { |
| 5304 | aarch64_set_vec_u8 (cpu, vd, i, |
| 5305 | copy_vn.b[i * 2] + copy_vn.b[i * 2 + 1]); |
| 5306 | aarch64_set_vec_u8 (cpu, vd, i + range, |
| 5307 | copy_vm.b[i * 2] + copy_vm.b[i * 2 + 1]); |
| 5308 | } |
| 5309 | return; |
| 5310 | |
| 5311 | case 1: |
| 5312 | range = full ? 4 : 2; |
| 5313 | for (i = 0; i < range; i++) |
| 5314 | { |
| 5315 | aarch64_set_vec_u16 (cpu, vd, i, |
| 5316 | copy_vn.h[i * 2] + copy_vn.h[i * 2 + 1]); |
| 5317 | aarch64_set_vec_u16 (cpu, vd, i + range, |
| 5318 | copy_vm.h[i * 2] + copy_vm.h[i * 2 + 1]); |
| 5319 | } |
| 5320 | return; |
| 5321 | |
| 5322 | case 2: |
| 5323 | range = full ? 2 : 1; |
| 5324 | for (i = 0; i < range; i++) |
| 5325 | { |
| 5326 | aarch64_set_vec_u32 (cpu, vd, i, |
| 5327 | copy_vn.w[i * 2] + copy_vn.w[i * 2 + 1]); |
| 5328 | aarch64_set_vec_u32 (cpu, vd, i + range, |
| 5329 | copy_vm.w[i * 2] + copy_vm.w[i * 2 + 1]); |
| 5330 | } |
| 5331 | return; |
| 5332 | |
| 5333 | case 3: |
| 5334 | if (! full) |
| 5335 | HALT_UNALLOC; |
| 5336 | aarch64_set_vec_u64 (cpu, vd, 0, copy_vn.v[0] + copy_vn.v[1]); |
| 5337 | aarch64_set_vec_u64 (cpu, vd, 1, copy_vm.v[0] + copy_vm.v[1]); |
| 5338 | return; |
| 5339 | } |
| 5340 | } |
| 5341 | |
| 5342 | static void |
| 5343 | do_vec_UMOV (sim_cpu *cpu) |
| 5344 | { |
| 5345 | /* instr[31] = 0 |
| 5346 | instr[30] = 32-bit(0)/64-bit(1) |
| 5347 | instr[29,21] = 00 1110 000 |
| 5348 | insrt[20,16] = size & index |
| 5349 | instr[15,10] = 0011 11 |
| 5350 | instr[9,5] = V source |
| 5351 | instr[4,0] = R dest. */ |
| 5352 | |
| 5353 | unsigned vs = INSTR (9, 5); |
| 5354 | unsigned rd = INSTR (4, 0); |
| 5355 | unsigned index; |
| 5356 | |
| 5357 | NYI_assert (29, 21, 0x070); |
| 5358 | NYI_assert (15, 10, 0x0F); |
| 5359 | |
| 5360 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5361 | if (INSTR (16, 16)) |
| 5362 | { |
| 5363 | /* Byte transfer. */ |
| 5364 | index = INSTR (20, 17); |
| 5365 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 5366 | aarch64_get_vec_u8 (cpu, vs, index)); |
| 5367 | } |
| 5368 | else if (INSTR (17, 17)) |
| 5369 | { |
| 5370 | index = INSTR (20, 18); |
| 5371 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 5372 | aarch64_get_vec_u16 (cpu, vs, index)); |
| 5373 | } |
| 5374 | else if (INSTR (18, 18)) |
| 5375 | { |
| 5376 | index = INSTR (20, 19); |
| 5377 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 5378 | aarch64_get_vec_u32 (cpu, vs, index)); |
| 5379 | } |
| 5380 | else |
| 5381 | { |
| 5382 | if (INSTR (30, 30) != 1) |
| 5383 | HALT_UNALLOC; |
| 5384 | |
| 5385 | index = INSTR (20, 20); |
| 5386 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 5387 | aarch64_get_vec_u64 (cpu, vs, index)); |
| 5388 | } |
| 5389 | } |
| 5390 | |
| 5391 | static void |
| 5392 | do_vec_FABS (sim_cpu *cpu) |
| 5393 | { |
| 5394 | /* instr[31] = 0 |
| 5395 | instr[30] = half(0)/full(1) |
| 5396 | instr[29,23] = 00 1110 1 |
| 5397 | instr[22] = float(0)/double(1) |
| 5398 | instr[21,16] = 10 0000 |
| 5399 | instr[15,10] = 1111 10 |
| 5400 | instr[9,5] = Vn |
| 5401 | instr[4,0] = Vd. */ |
| 5402 | |
| 5403 | unsigned vn = INSTR (9, 5); |
| 5404 | unsigned vd = INSTR (4, 0); |
| 5405 | unsigned full = INSTR (30, 30); |
| 5406 | unsigned i; |
| 5407 | |
| 5408 | NYI_assert (29, 23, 0x1D); |
| 5409 | NYI_assert (21, 10, 0x83E); |
| 5410 | |
| 5411 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5412 | if (INSTR (22, 22)) |
| 5413 | { |
| 5414 | if (! full) |
| 5415 | HALT_NYI; |
| 5416 | |
| 5417 | for (i = 0; i < 2; i++) |
| 5418 | aarch64_set_vec_double (cpu, vd, i, |
| 5419 | fabs (aarch64_get_vec_double (cpu, vn, i))); |
| 5420 | } |
| 5421 | else |
| 5422 | { |
| 5423 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5424 | aarch64_set_vec_float (cpu, vd, i, |
| 5425 | fabsf (aarch64_get_vec_float (cpu, vn, i))); |
| 5426 | } |
| 5427 | } |
| 5428 | |
| 5429 | static void |
| 5430 | do_vec_FCVTZS (sim_cpu *cpu) |
| 5431 | { |
| 5432 | /* instr[31] = 0 |
| 5433 | instr[30] = half (0) / all (1) |
| 5434 | instr[29,23] = 00 1110 1 |
| 5435 | instr[22] = single (0) / double (1) |
| 5436 | instr[21,10] = 10 0001 1011 10 |
| 5437 | instr[9,5] = Rn |
| 5438 | instr[4,0] = Rd. */ |
| 5439 | |
| 5440 | unsigned rn = INSTR (9, 5); |
| 5441 | unsigned rd = INSTR (4, 0); |
| 5442 | unsigned full = INSTR (30, 30); |
| 5443 | unsigned i; |
| 5444 | |
| 5445 | NYI_assert (31, 31, 0); |
| 5446 | NYI_assert (29, 23, 0x1D); |
| 5447 | NYI_assert (21, 10, 0x86E); |
| 5448 | |
| 5449 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5450 | if (INSTR (22, 22)) |
| 5451 | { |
| 5452 | if (! full) |
| 5453 | HALT_UNALLOC; |
| 5454 | |
| 5455 | for (i = 0; i < 2; i++) |
| 5456 | aarch64_set_vec_s64 (cpu, rd, i, |
| 5457 | (int64_t) aarch64_get_vec_double (cpu, rn, i)); |
| 5458 | } |
| 5459 | else |
| 5460 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5461 | aarch64_set_vec_s32 (cpu, rd, i, |
| 5462 | (int32_t) aarch64_get_vec_float (cpu, rn, i)); |
| 5463 | } |
| 5464 | |
| 5465 | static void |
| 5466 | do_vec_REV64 (sim_cpu *cpu) |
| 5467 | { |
| 5468 | /* instr[31] = 0 |
| 5469 | instr[30] = full/half |
| 5470 | instr[29,24] = 00 1110 |
| 5471 | instr[23,22] = size |
| 5472 | instr[21,10] = 10 0000 0000 10 |
| 5473 | instr[9,5] = Rn |
| 5474 | instr[4,0] = Rd. */ |
| 5475 | |
| 5476 | unsigned rn = INSTR (9, 5); |
| 5477 | unsigned rd = INSTR (4, 0); |
| 5478 | unsigned size = INSTR (23, 22); |
| 5479 | unsigned full = INSTR (30, 30); |
| 5480 | unsigned i; |
| 5481 | FRegister val; |
| 5482 | |
| 5483 | NYI_assert (29, 24, 0x0E); |
| 5484 | NYI_assert (21, 10, 0x802); |
| 5485 | |
| 5486 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5487 | switch (size) |
| 5488 | { |
| 5489 | case 0: |
| 5490 | for (i = 0; i < (full ? 16 : 8); i++) |
| 5491 | val.b[i ^ 0x7] = aarch64_get_vec_u8 (cpu, rn, i); |
| 5492 | break; |
| 5493 | |
| 5494 | case 1: |
| 5495 | for (i = 0; i < (full ? 8 : 4); i++) |
| 5496 | val.h[i ^ 0x3] = aarch64_get_vec_u16 (cpu, rn, i); |
| 5497 | break; |
| 5498 | |
| 5499 | case 2: |
| 5500 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5501 | val.w[i ^ 0x1] = aarch64_get_vec_u32 (cpu, rn, i); |
| 5502 | break; |
| 5503 | |
| 5504 | case 3: |
| 5505 | HALT_UNALLOC; |
| 5506 | } |
| 5507 | |
| 5508 | aarch64_set_vec_u64 (cpu, rd, 0, val.v[0]); |
| 5509 | if (full) |
| 5510 | aarch64_set_vec_u64 (cpu, rd, 1, val.v[1]); |
| 5511 | } |
| 5512 | |
| 5513 | static void |
| 5514 | do_vec_REV16 (sim_cpu *cpu) |
| 5515 | { |
| 5516 | /* instr[31] = 0 |
| 5517 | instr[30] = full/half |
| 5518 | instr[29,24] = 00 1110 |
| 5519 | instr[23,22] = size |
| 5520 | instr[21,10] = 10 0000 0001 10 |
| 5521 | instr[9,5] = Rn |
| 5522 | instr[4,0] = Rd. */ |
| 5523 | |
| 5524 | unsigned rn = INSTR (9, 5); |
| 5525 | unsigned rd = INSTR (4, 0); |
| 5526 | unsigned size = INSTR (23, 22); |
| 5527 | unsigned full = INSTR (30, 30); |
| 5528 | unsigned i; |
| 5529 | FRegister val; |
| 5530 | |
| 5531 | NYI_assert (29, 24, 0x0E); |
| 5532 | NYI_assert (21, 10, 0x806); |
| 5533 | |
| 5534 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5535 | switch (size) |
| 5536 | { |
| 5537 | case 0: |
| 5538 | for (i = 0; i < (full ? 16 : 8); i++) |
| 5539 | val.b[i ^ 0x1] = aarch64_get_vec_u8 (cpu, rn, i); |
| 5540 | break; |
| 5541 | |
| 5542 | default: |
| 5543 | HALT_UNALLOC; |
| 5544 | } |
| 5545 | |
| 5546 | aarch64_set_vec_u64 (cpu, rd, 0, val.v[0]); |
| 5547 | if (full) |
| 5548 | aarch64_set_vec_u64 (cpu, rd, 1, val.v[1]); |
| 5549 | } |
| 5550 | |
| 5551 | static void |
| 5552 | do_vec_op1 (sim_cpu *cpu) |
| 5553 | { |
| 5554 | /* instr[31] = 0 |
| 5555 | instr[30] = half/full |
| 5556 | instr[29,24] = 00 1110 |
| 5557 | instr[23,21] = ??? |
| 5558 | instr[20,16] = Vm |
| 5559 | instr[15,10] = sub-opcode |
| 5560 | instr[9,5] = Vn |
| 5561 | instr[4,0] = Vd */ |
| 5562 | NYI_assert (29, 24, 0x0E); |
| 5563 | |
| 5564 | if (INSTR (21, 21) == 0) |
| 5565 | { |
| 5566 | if (INSTR (23, 22) == 0) |
| 5567 | { |
| 5568 | if (INSTR (30, 30) == 1 |
| 5569 | && INSTR (17, 14) == 0 |
| 5570 | && INSTR (12, 10) == 7) |
| 5571 | return do_vec_ins_2 (cpu); |
| 5572 | |
| 5573 | switch (INSTR (15, 10)) |
| 5574 | { |
| 5575 | case 0x01: do_vec_DUP_vector_into_vector (cpu); return; |
| 5576 | case 0x03: do_vec_DUP_scalar_into_vector (cpu); return; |
| 5577 | case 0x07: do_vec_INS (cpu); return; |
| 5578 | case 0x0A: do_vec_TRN (cpu); return; |
| 5579 | |
| 5580 | case 0x0F: |
| 5581 | if (INSTR (17, 16) == 0) |
| 5582 | { |
| 5583 | do_vec_MOV_into_scalar (cpu); |
| 5584 | return; |
| 5585 | } |
| 5586 | break; |
| 5587 | |
| 5588 | case 0x00: |
| 5589 | case 0x08: |
| 5590 | case 0x10: |
| 5591 | case 0x18: |
| 5592 | do_vec_TBL (cpu); return; |
| 5593 | |
| 5594 | case 0x06: |
| 5595 | case 0x16: |
| 5596 | do_vec_UZP (cpu); return; |
| 5597 | |
| 5598 | case 0x0E: |
| 5599 | case 0x1E: |
| 5600 | do_vec_ZIP (cpu); return; |
| 5601 | |
| 5602 | default: |
| 5603 | HALT_NYI; |
| 5604 | } |
| 5605 | } |
| 5606 | |
| 5607 | switch (INSTR (13, 10)) |
| 5608 | { |
| 5609 | case 0x6: do_vec_UZP (cpu); return; |
| 5610 | case 0xE: do_vec_ZIP (cpu); return; |
| 5611 | case 0xA: do_vec_TRN (cpu); return; |
| 5612 | case 0xF: do_vec_UMOV (cpu); return; |
| 5613 | default: HALT_NYI; |
| 5614 | } |
| 5615 | } |
| 5616 | |
| 5617 | switch (INSTR (15, 10)) |
| 5618 | { |
| 5619 | case 0x02: do_vec_REV64 (cpu); return; |
| 5620 | case 0x06: do_vec_REV16 (cpu); return; |
| 5621 | |
| 5622 | case 0x07: |
| 5623 | switch (INSTR (23, 21)) |
| 5624 | { |
| 5625 | case 1: do_vec_AND (cpu); return; |
| 5626 | case 3: do_vec_BIC (cpu); return; |
| 5627 | case 5: do_vec_ORR (cpu); return; |
| 5628 | case 7: do_vec_ORN (cpu); return; |
| 5629 | default: HALT_NYI; |
| 5630 | } |
| 5631 | |
| 5632 | case 0x08: do_vec_sub_long (cpu); return; |
| 5633 | case 0x0a: do_vec_XTN (cpu); return; |
| 5634 | case 0x11: do_vec_SSHL (cpu); return; |
| 5635 | case 0x19: do_vec_max (cpu); return; |
| 5636 | case 0x1B: do_vec_min (cpu); return; |
| 5637 | case 0x21: do_vec_add (cpu); return; |
| 5638 | case 0x25: do_vec_MLA (cpu); return; |
| 5639 | case 0x27: do_vec_mul (cpu); return; |
| 5640 | case 0x2F: do_vec_ADDP (cpu); return; |
| 5641 | case 0x30: do_vec_mull (cpu); return; |
| 5642 | case 0x33: do_vec_FMLA (cpu); return; |
| 5643 | case 0x35: do_vec_fadd (cpu); return; |
| 5644 | |
| 5645 | case 0x2E: |
| 5646 | switch (INSTR (20, 16)) |
| 5647 | { |
| 5648 | case 0x00: do_vec_ABS (cpu); return; |
| 5649 | case 0x01: do_vec_FCVTZS (cpu); return; |
| 5650 | case 0x11: do_vec_ADDV (cpu); return; |
| 5651 | default: HALT_NYI; |
| 5652 | } |
| 5653 | |
| 5654 | case 0x31: |
| 5655 | case 0x3B: |
| 5656 | do_vec_Fminmax (cpu); return; |
| 5657 | |
| 5658 | case 0x0D: |
| 5659 | case 0x0F: |
| 5660 | case 0x22: |
| 5661 | case 0x23: |
| 5662 | case 0x26: |
| 5663 | case 0x2A: |
| 5664 | case 0x32: |
| 5665 | case 0x36: |
| 5666 | case 0x39: |
| 5667 | case 0x3A: |
| 5668 | do_vec_compare (cpu); return; |
| 5669 | |
| 5670 | case 0x3E: |
| 5671 | do_vec_FABS (cpu); return; |
| 5672 | |
| 5673 | default: |
| 5674 | HALT_NYI; |
| 5675 | } |
| 5676 | } |
| 5677 | |
| 5678 | static void |
| 5679 | do_vec_xtl (sim_cpu *cpu) |
| 5680 | { |
| 5681 | /* instr[31] = 0 |
| 5682 | instr[30,29] = SXTL (00), UXTL (01), SXTL2 (10), UXTL2 (11) |
| 5683 | instr[28,22] = 0 1111 00 |
| 5684 | instr[21,16] = size & shift (USHLL, SSHLL, USHLL2, SSHLL2) |
| 5685 | instr[15,10] = 1010 01 |
| 5686 | instr[9,5] = V source |
| 5687 | instr[4,0] = V dest. */ |
| 5688 | |
| 5689 | unsigned vs = INSTR (9, 5); |
| 5690 | unsigned vd = INSTR (4, 0); |
| 5691 | unsigned i, shift, bias = 0; |
| 5692 | |
| 5693 | NYI_assert (28, 22, 0x3C); |
| 5694 | NYI_assert (15, 10, 0x29); |
| 5695 | |
| 5696 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5697 | switch (INSTR (30, 29)) |
| 5698 | { |
| 5699 | case 2: /* SXTL2, SSHLL2. */ |
| 5700 | bias = 2; |
| 5701 | case 0: /* SXTL, SSHLL. */ |
| 5702 | if (INSTR (21, 21)) |
| 5703 | { |
| 5704 | int64_t val1, val2; |
| 5705 | |
| 5706 | shift = INSTR (20, 16); |
| 5707 | /* Get the source values before setting the destination values |
| 5708 | in case the source and destination are the same. */ |
| 5709 | val1 = aarch64_get_vec_s32 (cpu, vs, bias) << shift; |
| 5710 | val2 = aarch64_get_vec_s32 (cpu, vs, bias + 1) << shift; |
| 5711 | aarch64_set_vec_s64 (cpu, vd, 0, val1); |
| 5712 | aarch64_set_vec_s64 (cpu, vd, 1, val2); |
| 5713 | } |
| 5714 | else if (INSTR (20, 20)) |
| 5715 | { |
| 5716 | int32_t v[4]; |
| 5717 | int32_t v1,v2,v3,v4; |
| 5718 | |
| 5719 | shift = INSTR (19, 16); |
| 5720 | bias *= 2; |
| 5721 | for (i = 0; i < 4; i++) |
| 5722 | v[i] = aarch64_get_vec_s16 (cpu, vs, bias + i) << shift; |
| 5723 | for (i = 0; i < 4; i++) |
| 5724 | aarch64_set_vec_s32 (cpu, vd, i, v[i]); |
| 5725 | } |
| 5726 | else |
| 5727 | { |
| 5728 | int16_t v[8]; |
| 5729 | NYI_assert (19, 19, 1); |
| 5730 | |
| 5731 | shift = INSTR (18, 16); |
| 5732 | bias *= 3; |
| 5733 | for (i = 0; i < 8; i++) |
| 5734 | v[i] = aarch64_get_vec_s8 (cpu, vs, i + bias) << shift; |
| 5735 | for (i = 0; i < 8; i++) |
| 5736 | aarch64_set_vec_s16 (cpu, vd, i, v[i]); |
| 5737 | } |
| 5738 | return; |
| 5739 | |
| 5740 | case 3: /* UXTL2, USHLL2. */ |
| 5741 | bias = 2; |
| 5742 | case 1: /* UXTL, USHLL. */ |
| 5743 | if (INSTR (21, 21)) |
| 5744 | { |
| 5745 | uint64_t v1, v2; |
| 5746 | shift = INSTR (20, 16); |
| 5747 | v1 = aarch64_get_vec_u32 (cpu, vs, bias) << shift; |
| 5748 | v2 = aarch64_get_vec_u32 (cpu, vs, bias + 1) << shift; |
| 5749 | aarch64_set_vec_u64 (cpu, vd, 0, v1); |
| 5750 | aarch64_set_vec_u64 (cpu, vd, 1, v2); |
| 5751 | } |
| 5752 | else if (INSTR (20, 20)) |
| 5753 | { |
| 5754 | uint32_t v[4]; |
| 5755 | shift = INSTR (19, 16); |
| 5756 | bias *= 2; |
| 5757 | for (i = 0; i < 4; i++) |
| 5758 | v[i] = aarch64_get_vec_u16 (cpu, vs, i + bias) << shift; |
| 5759 | for (i = 0; i < 4; i++) |
| 5760 | aarch64_set_vec_u32 (cpu, vd, i, v[i]); |
| 5761 | } |
| 5762 | else |
| 5763 | { |
| 5764 | uint16_t v[8]; |
| 5765 | NYI_assert (19, 19, 1); |
| 5766 | |
| 5767 | shift = INSTR (18, 16); |
| 5768 | bias *= 3; |
| 5769 | for (i = 0; i < 8; i++) |
| 5770 | v[i] = aarch64_get_vec_u8 (cpu, vs, i + bias) << shift; |
| 5771 | for (i = 0; i < 8; i++) |
| 5772 | aarch64_set_vec_u16 (cpu, vd, i, v[i]); |
| 5773 | } |
| 5774 | return; |
| 5775 | } |
| 5776 | } |
| 5777 | |
| 5778 | static void |
| 5779 | do_vec_SHL (sim_cpu *cpu) |
| 5780 | { |
| 5781 | /* instr [31] = 0 |
| 5782 | instr [30] = half(0)/full(1) |
| 5783 | instr [29,23] = 001 1110 |
| 5784 | instr [22,16] = size and shift amount |
| 5785 | instr [15,10] = 01 0101 |
| 5786 | instr [9, 5] = Vs |
| 5787 | instr [4, 0] = Vd. */ |
| 5788 | |
| 5789 | int shift; |
| 5790 | int full = INSTR (30, 30); |
| 5791 | unsigned vs = INSTR (9, 5); |
| 5792 | unsigned vd = INSTR (4, 0); |
| 5793 | unsigned i; |
| 5794 | |
| 5795 | NYI_assert (29, 23, 0x1E); |
| 5796 | NYI_assert (15, 10, 0x15); |
| 5797 | |
| 5798 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5799 | if (INSTR (22, 22)) |
| 5800 | { |
| 5801 | shift = INSTR (21, 16); |
| 5802 | |
| 5803 | if (full == 0) |
| 5804 | HALT_UNALLOC; |
| 5805 | |
| 5806 | for (i = 0; i < 2; i++) |
| 5807 | { |
| 5808 | uint64_t val = aarch64_get_vec_u64 (cpu, vs, i); |
| 5809 | aarch64_set_vec_u64 (cpu, vd, i, val << shift); |
| 5810 | } |
| 5811 | |
| 5812 | return; |
| 5813 | } |
| 5814 | |
| 5815 | if (INSTR (21, 21)) |
| 5816 | { |
| 5817 | shift = INSTR (20, 16); |
| 5818 | |
| 5819 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5820 | { |
| 5821 | uint32_t val = aarch64_get_vec_u32 (cpu, vs, i); |
| 5822 | aarch64_set_vec_u32 (cpu, vd, i, val << shift); |
| 5823 | } |
| 5824 | |
| 5825 | return; |
| 5826 | } |
| 5827 | |
| 5828 | if (INSTR (20, 20)) |
| 5829 | { |
| 5830 | shift = INSTR (19, 16); |
| 5831 | |
| 5832 | for (i = 0; i < (full ? 8 : 4); i++) |
| 5833 | { |
| 5834 | uint16_t val = aarch64_get_vec_u16 (cpu, vs, i); |
| 5835 | aarch64_set_vec_u16 (cpu, vd, i, val << shift); |
| 5836 | } |
| 5837 | |
| 5838 | return; |
| 5839 | } |
| 5840 | |
| 5841 | if (INSTR (19, 19) == 0) |
| 5842 | HALT_UNALLOC; |
| 5843 | |
| 5844 | shift = INSTR (18, 16); |
| 5845 | |
| 5846 | for (i = 0; i < (full ? 16 : 8); i++) |
| 5847 | { |
| 5848 | uint8_t val = aarch64_get_vec_u8 (cpu, vs, i); |
| 5849 | aarch64_set_vec_u8 (cpu, vd, i, val << shift); |
| 5850 | } |
| 5851 | } |
| 5852 | |
| 5853 | static void |
| 5854 | do_vec_SSHR_USHR (sim_cpu *cpu) |
| 5855 | { |
| 5856 | /* instr [31] = 0 |
| 5857 | instr [30] = half(0)/full(1) |
| 5858 | instr [29] = signed(0)/unsigned(1) |
| 5859 | instr [28,23] = 0 1111 0 |
| 5860 | instr [22,16] = size and shift amount |
| 5861 | instr [15,10] = 0000 01 |
| 5862 | instr [9, 5] = Vs |
| 5863 | instr [4, 0] = Vd. */ |
| 5864 | |
| 5865 | int full = INSTR (30, 30); |
| 5866 | int sign = ! INSTR (29, 29); |
| 5867 | unsigned shift = INSTR (22, 16); |
| 5868 | unsigned vs = INSTR (9, 5); |
| 5869 | unsigned vd = INSTR (4, 0); |
| 5870 | unsigned i; |
| 5871 | |
| 5872 | NYI_assert (28, 23, 0x1E); |
| 5873 | NYI_assert (15, 10, 0x01); |
| 5874 | |
| 5875 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5876 | if (INSTR (22, 22)) |
| 5877 | { |
| 5878 | shift = 128 - shift; |
| 5879 | |
| 5880 | if (full == 0) |
| 5881 | HALT_UNALLOC; |
| 5882 | |
| 5883 | if (sign) |
| 5884 | for (i = 0; i < 2; i++) |
| 5885 | { |
| 5886 | int64_t val = aarch64_get_vec_s64 (cpu, vs, i); |
| 5887 | aarch64_set_vec_s64 (cpu, vd, i, val >> shift); |
| 5888 | } |
| 5889 | else |
| 5890 | for (i = 0; i < 2; i++) |
| 5891 | { |
| 5892 | uint64_t val = aarch64_get_vec_u64 (cpu, vs, i); |
| 5893 | aarch64_set_vec_u64 (cpu, vd, i, val >> shift); |
| 5894 | } |
| 5895 | |
| 5896 | return; |
| 5897 | } |
| 5898 | |
| 5899 | if (INSTR (21, 21)) |
| 5900 | { |
| 5901 | shift = 64 - shift; |
| 5902 | |
| 5903 | if (sign) |
| 5904 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5905 | { |
| 5906 | int32_t val = aarch64_get_vec_s32 (cpu, vs, i); |
| 5907 | aarch64_set_vec_s32 (cpu, vd, i, val >> shift); |
| 5908 | } |
| 5909 | else |
| 5910 | for (i = 0; i < (full ? 4 : 2); i++) |
| 5911 | { |
| 5912 | uint32_t val = aarch64_get_vec_u32 (cpu, vs, i); |
| 5913 | aarch64_set_vec_u32 (cpu, vd, i, val >> shift); |
| 5914 | } |
| 5915 | |
| 5916 | return; |
| 5917 | } |
| 5918 | |
| 5919 | if (INSTR (20, 20)) |
| 5920 | { |
| 5921 | shift = 32 - shift; |
| 5922 | |
| 5923 | if (sign) |
| 5924 | for (i = 0; i < (full ? 8 : 4); i++) |
| 5925 | { |
| 5926 | int16_t val = aarch64_get_vec_s16 (cpu, vs, i); |
| 5927 | aarch64_set_vec_s16 (cpu, vd, i, val >> shift); |
| 5928 | } |
| 5929 | else |
| 5930 | for (i = 0; i < (full ? 8 : 4); i++) |
| 5931 | { |
| 5932 | uint16_t val = aarch64_get_vec_u16 (cpu, vs, i); |
| 5933 | aarch64_set_vec_u16 (cpu, vd, i, val >> shift); |
| 5934 | } |
| 5935 | |
| 5936 | return; |
| 5937 | } |
| 5938 | |
| 5939 | if (INSTR (19, 19) == 0) |
| 5940 | HALT_UNALLOC; |
| 5941 | |
| 5942 | shift = 16 - shift; |
| 5943 | |
| 5944 | if (sign) |
| 5945 | for (i = 0; i < (full ? 16 : 8); i++) |
| 5946 | { |
| 5947 | int8_t val = aarch64_get_vec_s8 (cpu, vs, i); |
| 5948 | aarch64_set_vec_s8 (cpu, vd, i, val >> shift); |
| 5949 | } |
| 5950 | else |
| 5951 | for (i = 0; i < (full ? 16 : 8); i++) |
| 5952 | { |
| 5953 | uint8_t val = aarch64_get_vec_u8 (cpu, vs, i); |
| 5954 | aarch64_set_vec_u8 (cpu, vd, i, val >> shift); |
| 5955 | } |
| 5956 | } |
| 5957 | |
| 5958 | static void |
| 5959 | do_vec_MUL_by_element (sim_cpu *cpu) |
| 5960 | { |
| 5961 | /* instr[31] = 0 |
| 5962 | instr[30] = half/full |
| 5963 | instr[29,24] = 00 1111 |
| 5964 | instr[23,22] = size |
| 5965 | instr[21] = L |
| 5966 | instr[20] = M |
| 5967 | instr[19,16] = m |
| 5968 | instr[15,12] = 1000 |
| 5969 | instr[11] = H |
| 5970 | instr[10] = 0 |
| 5971 | instr[9,5] = Vn |
| 5972 | instr[4,0] = Vd */ |
| 5973 | |
| 5974 | unsigned full = INSTR (30, 30); |
| 5975 | unsigned L = INSTR (21, 21); |
| 5976 | unsigned H = INSTR (11, 11); |
| 5977 | unsigned vn = INSTR (9, 5); |
| 5978 | unsigned vd = INSTR (4, 0); |
| 5979 | unsigned size = INSTR (23, 22); |
| 5980 | unsigned index; |
| 5981 | unsigned vm; |
| 5982 | unsigned e; |
| 5983 | |
| 5984 | NYI_assert (29, 24, 0x0F); |
| 5985 | NYI_assert (15, 12, 0x8); |
| 5986 | NYI_assert (10, 10, 0); |
| 5987 | |
| 5988 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 5989 | switch (size) |
| 5990 | { |
| 5991 | case 1: |
| 5992 | { |
| 5993 | /* 16 bit products. */ |
| 5994 | uint16_t product; |
| 5995 | uint16_t element1; |
| 5996 | uint16_t element2; |
| 5997 | |
| 5998 | index = (H << 2) | (L << 1) | INSTR (20, 20); |
| 5999 | vm = INSTR (19, 16); |
| 6000 | element2 = aarch64_get_vec_u16 (cpu, vm, index); |
| 6001 | |
| 6002 | for (e = 0; e < (full ? 8 : 4); e ++) |
| 6003 | { |
| 6004 | element1 = aarch64_get_vec_u16 (cpu, vn, e); |
| 6005 | product = element1 * element2; |
| 6006 | aarch64_set_vec_u16 (cpu, vd, e, product); |
| 6007 | } |
| 6008 | } |
| 6009 | break; |
| 6010 | |
| 6011 | case 2: |
| 6012 | { |
| 6013 | /* 32 bit products. */ |
| 6014 | uint32_t product; |
| 6015 | uint32_t element1; |
| 6016 | uint32_t element2; |
| 6017 | |
| 6018 | index = (H << 1) | L; |
| 6019 | vm = INSTR (20, 16); |
| 6020 | element2 = aarch64_get_vec_u32 (cpu, vm, index); |
| 6021 | |
| 6022 | for (e = 0; e < (full ? 4 : 2); e ++) |
| 6023 | { |
| 6024 | element1 = aarch64_get_vec_u32 (cpu, vn, e); |
| 6025 | product = element1 * element2; |
| 6026 | aarch64_set_vec_u32 (cpu, vd, e, product); |
| 6027 | } |
| 6028 | } |
| 6029 | break; |
| 6030 | |
| 6031 | default: |
| 6032 | HALT_UNALLOC; |
| 6033 | } |
| 6034 | } |
| 6035 | |
| 6036 | static void |
| 6037 | do_FMLA_by_element (sim_cpu *cpu) |
| 6038 | { |
| 6039 | /* instr[31] = 0 |
| 6040 | instr[30] = half/full |
| 6041 | instr[29,23] = 00 1111 1 |
| 6042 | instr[22] = size |
| 6043 | instr[21] = L |
| 6044 | instr[20,16] = m |
| 6045 | instr[15,12] = 0001 |
| 6046 | instr[11] = H |
| 6047 | instr[10] = 0 |
| 6048 | instr[9,5] = Vn |
| 6049 | instr[4,0] = Vd */ |
| 6050 | |
| 6051 | unsigned full = INSTR (30, 30); |
| 6052 | unsigned size = INSTR (22, 22); |
| 6053 | unsigned L = INSTR (21, 21); |
| 6054 | unsigned vm = INSTR (20, 16); |
| 6055 | unsigned H = INSTR (11, 11); |
| 6056 | unsigned vn = INSTR (9, 5); |
| 6057 | unsigned vd = INSTR (4, 0); |
| 6058 | unsigned e; |
| 6059 | |
| 6060 | NYI_assert (29, 23, 0x1F); |
| 6061 | NYI_assert (15, 12, 0x1); |
| 6062 | NYI_assert (10, 10, 0); |
| 6063 | |
| 6064 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6065 | if (size) |
| 6066 | { |
| 6067 | double element1, element2; |
| 6068 | |
| 6069 | if (! full || L) |
| 6070 | HALT_UNALLOC; |
| 6071 | |
| 6072 | element2 = aarch64_get_vec_double (cpu, vm, H); |
| 6073 | |
| 6074 | for (e = 0; e < 2; e++) |
| 6075 | { |
| 6076 | element1 = aarch64_get_vec_double (cpu, vn, e); |
| 6077 | element1 *= element2; |
| 6078 | element1 += aarch64_get_vec_double (cpu, vd, e); |
| 6079 | aarch64_set_vec_double (cpu, vd, e, element1); |
| 6080 | } |
| 6081 | } |
| 6082 | else |
| 6083 | { |
| 6084 | float element1; |
| 6085 | float element2 = aarch64_get_vec_float (cpu, vm, (H << 1) | L); |
| 6086 | |
| 6087 | for (e = 0; e < (full ? 4 : 2); e++) |
| 6088 | { |
| 6089 | element1 = aarch64_get_vec_float (cpu, vn, e); |
| 6090 | element1 *= element2; |
| 6091 | element1 += aarch64_get_vec_float (cpu, vd, e); |
| 6092 | aarch64_set_vec_float (cpu, vd, e, element1); |
| 6093 | } |
| 6094 | } |
| 6095 | } |
| 6096 | |
| 6097 | static void |
| 6098 | do_vec_op2 (sim_cpu *cpu) |
| 6099 | { |
| 6100 | /* instr[31] = 0 |
| 6101 | instr[30] = half/full |
| 6102 | instr[29,24] = 00 1111 |
| 6103 | instr[23] = ? |
| 6104 | instr[22,16] = element size & index |
| 6105 | instr[15,10] = sub-opcode |
| 6106 | instr[9,5] = Vm |
| 6107 | instr[4,0] = Vd */ |
| 6108 | |
| 6109 | NYI_assert (29, 24, 0x0F); |
| 6110 | |
| 6111 | if (INSTR (23, 23) != 0) |
| 6112 | { |
| 6113 | switch (INSTR (15, 10)) |
| 6114 | { |
| 6115 | case 0x04: |
| 6116 | case 0x06: |
| 6117 | do_FMLA_by_element (cpu); |
| 6118 | return; |
| 6119 | |
| 6120 | case 0x20: |
| 6121 | case 0x22: |
| 6122 | do_vec_MUL_by_element (cpu); |
| 6123 | return; |
| 6124 | |
| 6125 | default: |
| 6126 | HALT_NYI; |
| 6127 | } |
| 6128 | } |
| 6129 | else |
| 6130 | { |
| 6131 | switch (INSTR (15, 10)) |
| 6132 | { |
| 6133 | case 0x01: do_vec_SSHR_USHR (cpu); return; |
| 6134 | case 0x15: do_vec_SHL (cpu); return; |
| 6135 | case 0x20: |
| 6136 | case 0x22: do_vec_MUL_by_element (cpu); return; |
| 6137 | case 0x29: do_vec_xtl (cpu); return; |
| 6138 | default: HALT_NYI; |
| 6139 | } |
| 6140 | } |
| 6141 | } |
| 6142 | |
| 6143 | static void |
| 6144 | do_vec_neg (sim_cpu *cpu) |
| 6145 | { |
| 6146 | /* instr[31] = 0 |
| 6147 | instr[30] = full(1)/half(0) |
| 6148 | instr[29,24] = 10 1110 |
| 6149 | instr[23,22] = size: byte(00), half (01), word (10), long (11) |
| 6150 | instr[21,10] = 1000 0010 1110 |
| 6151 | instr[9,5] = Vs |
| 6152 | instr[4,0] = Vd */ |
| 6153 | |
| 6154 | int full = INSTR (30, 30); |
| 6155 | unsigned vs = INSTR (9, 5); |
| 6156 | unsigned vd = INSTR (4, 0); |
| 6157 | unsigned i; |
| 6158 | |
| 6159 | NYI_assert (29, 24, 0x2E); |
| 6160 | NYI_assert (21, 10, 0x82E); |
| 6161 | |
| 6162 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6163 | switch (INSTR (23, 22)) |
| 6164 | { |
| 6165 | case 0: |
| 6166 | for (i = 0; i < (full ? 16 : 8); i++) |
| 6167 | aarch64_set_vec_s8 (cpu, vd, i, - aarch64_get_vec_s8 (cpu, vs, i)); |
| 6168 | return; |
| 6169 | |
| 6170 | case 1: |
| 6171 | for (i = 0; i < (full ? 8 : 4); i++) |
| 6172 | aarch64_set_vec_s16 (cpu, vd, i, - aarch64_get_vec_s16 (cpu, vs, i)); |
| 6173 | return; |
| 6174 | |
| 6175 | case 2: |
| 6176 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6177 | aarch64_set_vec_s32 (cpu, vd, i, - aarch64_get_vec_s32 (cpu, vs, i)); |
| 6178 | return; |
| 6179 | |
| 6180 | case 3: |
| 6181 | if (! full) |
| 6182 | HALT_NYI; |
| 6183 | for (i = 0; i < 2; i++) |
| 6184 | aarch64_set_vec_s64 (cpu, vd, i, - aarch64_get_vec_s64 (cpu, vs, i)); |
| 6185 | return; |
| 6186 | } |
| 6187 | } |
| 6188 | |
| 6189 | static void |
| 6190 | do_vec_sqrt (sim_cpu *cpu) |
| 6191 | { |
| 6192 | /* instr[31] = 0 |
| 6193 | instr[30] = full(1)/half(0) |
| 6194 | instr[29,23] = 101 1101 |
| 6195 | instr[22] = single(0)/double(1) |
| 6196 | instr[21,10] = 1000 0111 1110 |
| 6197 | instr[9,5] = Vs |
| 6198 | instr[4,0] = Vd. */ |
| 6199 | |
| 6200 | int full = INSTR (30, 30); |
| 6201 | unsigned vs = INSTR (9, 5); |
| 6202 | unsigned vd = INSTR (4, 0); |
| 6203 | unsigned i; |
| 6204 | |
| 6205 | NYI_assert (29, 23, 0x5B); |
| 6206 | NYI_assert (21, 10, 0x87E); |
| 6207 | |
| 6208 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6209 | if (INSTR (22, 22) == 0) |
| 6210 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6211 | aarch64_set_vec_float (cpu, vd, i, |
| 6212 | sqrtf (aarch64_get_vec_float (cpu, vs, i))); |
| 6213 | else |
| 6214 | for (i = 0; i < 2; i++) |
| 6215 | aarch64_set_vec_double (cpu, vd, i, |
| 6216 | sqrt (aarch64_get_vec_double (cpu, vs, i))); |
| 6217 | } |
| 6218 | |
| 6219 | static void |
| 6220 | do_vec_mls_indexed (sim_cpu *cpu) |
| 6221 | { |
| 6222 | /* instr[31] = 0 |
| 6223 | instr[30] = half(0)/full(1) |
| 6224 | instr[29,24] = 10 1111 |
| 6225 | instr[23,22] = 16-bit(01)/32-bit(10) |
| 6226 | instr[21,20+11] = index (if 16-bit) |
| 6227 | instr[21+11] = index (if 32-bit) |
| 6228 | instr[20,16] = Vm |
| 6229 | instr[15,12] = 0100 |
| 6230 | instr[11] = part of index |
| 6231 | instr[10] = 0 |
| 6232 | instr[9,5] = Vs |
| 6233 | instr[4,0] = Vd. */ |
| 6234 | |
| 6235 | int full = INSTR (30, 30); |
| 6236 | unsigned vs = INSTR (9, 5); |
| 6237 | unsigned vd = INSTR (4, 0); |
| 6238 | unsigned vm = INSTR (20, 16); |
| 6239 | unsigned i; |
| 6240 | |
| 6241 | NYI_assert (15, 12, 4); |
| 6242 | NYI_assert (10, 10, 0); |
| 6243 | |
| 6244 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6245 | switch (INSTR (23, 22)) |
| 6246 | { |
| 6247 | case 1: |
| 6248 | { |
| 6249 | unsigned elem; |
| 6250 | uint32_t val; |
| 6251 | |
| 6252 | if (vm > 15) |
| 6253 | HALT_NYI; |
| 6254 | |
| 6255 | elem = (INSTR (21, 20) << 1) | INSTR (11, 11); |
| 6256 | val = aarch64_get_vec_u16 (cpu, vm, elem); |
| 6257 | |
| 6258 | for (i = 0; i < (full ? 8 : 4); i++) |
| 6259 | aarch64_set_vec_u32 (cpu, vd, i, |
| 6260 | aarch64_get_vec_u32 (cpu, vd, i) - |
| 6261 | (aarch64_get_vec_u32 (cpu, vs, i) * val)); |
| 6262 | return; |
| 6263 | } |
| 6264 | |
| 6265 | case 2: |
| 6266 | { |
| 6267 | unsigned elem = (INSTR (21, 21) << 1) | INSTR (11, 11); |
| 6268 | uint64_t val = aarch64_get_vec_u32 (cpu, vm, elem); |
| 6269 | |
| 6270 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6271 | aarch64_set_vec_u64 (cpu, vd, i, |
| 6272 | aarch64_get_vec_u64 (cpu, vd, i) - |
| 6273 | (aarch64_get_vec_u64 (cpu, vs, i) * val)); |
| 6274 | return; |
| 6275 | } |
| 6276 | |
| 6277 | case 0: |
| 6278 | case 3: |
| 6279 | default: |
| 6280 | HALT_NYI; |
| 6281 | } |
| 6282 | } |
| 6283 | |
| 6284 | static void |
| 6285 | do_vec_SUB (sim_cpu *cpu) |
| 6286 | { |
| 6287 | /* instr [31] = 0 |
| 6288 | instr [30] = half(0)/full(1) |
| 6289 | instr [29,24] = 10 1110 |
| 6290 | instr [23,22] = size: byte(00, half(01), word (10), long (11) |
| 6291 | instr [21] = 1 |
| 6292 | instr [20,16] = Vm |
| 6293 | instr [15,10] = 10 0001 |
| 6294 | instr [9, 5] = Vn |
| 6295 | instr [4, 0] = Vd. */ |
| 6296 | |
| 6297 | unsigned full = INSTR (30, 30); |
| 6298 | unsigned vm = INSTR (20, 16); |
| 6299 | unsigned vn = INSTR (9, 5); |
| 6300 | unsigned vd = INSTR (4, 0); |
| 6301 | unsigned i; |
| 6302 | |
| 6303 | NYI_assert (29, 24, 0x2E); |
| 6304 | NYI_assert (21, 21, 1); |
| 6305 | NYI_assert (15, 10, 0x21); |
| 6306 | |
| 6307 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6308 | switch (INSTR (23, 22)) |
| 6309 | { |
| 6310 | case 0: |
| 6311 | for (i = 0; i < (full ? 16 : 8); i++) |
| 6312 | aarch64_set_vec_s8 (cpu, vd, i, |
| 6313 | aarch64_get_vec_s8 (cpu, vn, i) |
| 6314 | - aarch64_get_vec_s8 (cpu, vm, i)); |
| 6315 | return; |
| 6316 | |
| 6317 | case 1: |
| 6318 | for (i = 0; i < (full ? 8 : 4); i++) |
| 6319 | aarch64_set_vec_s16 (cpu, vd, i, |
| 6320 | aarch64_get_vec_s16 (cpu, vn, i) |
| 6321 | - aarch64_get_vec_s16 (cpu, vm, i)); |
| 6322 | return; |
| 6323 | |
| 6324 | case 2: |
| 6325 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6326 | aarch64_set_vec_s32 (cpu, vd, i, |
| 6327 | aarch64_get_vec_s32 (cpu, vn, i) |
| 6328 | - aarch64_get_vec_s32 (cpu, vm, i)); |
| 6329 | return; |
| 6330 | |
| 6331 | case 3: |
| 6332 | if (full == 0) |
| 6333 | HALT_UNALLOC; |
| 6334 | |
| 6335 | for (i = 0; i < 2; i++) |
| 6336 | aarch64_set_vec_s64 (cpu, vd, i, |
| 6337 | aarch64_get_vec_s64 (cpu, vn, i) |
| 6338 | - aarch64_get_vec_s64 (cpu, vm, i)); |
| 6339 | return; |
| 6340 | } |
| 6341 | } |
| 6342 | |
| 6343 | static void |
| 6344 | do_vec_MLS (sim_cpu *cpu) |
| 6345 | { |
| 6346 | /* instr [31] = 0 |
| 6347 | instr [30] = half(0)/full(1) |
| 6348 | instr [29,24] = 10 1110 |
| 6349 | instr [23,22] = size: byte(00, half(01), word (10) |
| 6350 | instr [21] = 1 |
| 6351 | instr [20,16] = Vm |
| 6352 | instr [15,10] = 10 0101 |
| 6353 | instr [9, 5] = Vn |
| 6354 | instr [4, 0] = Vd. */ |
| 6355 | |
| 6356 | unsigned full = INSTR (30, 30); |
| 6357 | unsigned vm = INSTR (20, 16); |
| 6358 | unsigned vn = INSTR (9, 5); |
| 6359 | unsigned vd = INSTR (4, 0); |
| 6360 | unsigned i; |
| 6361 | |
| 6362 | NYI_assert (29, 24, 0x2E); |
| 6363 | NYI_assert (21, 21, 1); |
| 6364 | NYI_assert (15, 10, 0x25); |
| 6365 | |
| 6366 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6367 | switch (INSTR (23, 22)) |
| 6368 | { |
| 6369 | case 0: |
| 6370 | for (i = 0; i < (full ? 16 : 8); i++) |
| 6371 | aarch64_set_vec_u8 (cpu, vd, i, |
| 6372 | (aarch64_get_vec_u8 (cpu, vn, i) |
| 6373 | * aarch64_get_vec_u8 (cpu, vm, i)) |
| 6374 | - aarch64_get_vec_u8 (cpu, vd, i)); |
| 6375 | return; |
| 6376 | |
| 6377 | case 1: |
| 6378 | for (i = 0; i < (full ? 8 : 4); i++) |
| 6379 | aarch64_set_vec_u16 (cpu, vd, i, |
| 6380 | (aarch64_get_vec_u16 (cpu, vn, i) |
| 6381 | * aarch64_get_vec_u16 (cpu, vm, i)) |
| 6382 | - aarch64_get_vec_u16 (cpu, vd, i)); |
| 6383 | return; |
| 6384 | |
| 6385 | case 2: |
| 6386 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6387 | aarch64_set_vec_u32 (cpu, vd, i, |
| 6388 | (aarch64_get_vec_u32 (cpu, vn, i) |
| 6389 | * aarch64_get_vec_u32 (cpu, vm, i)) |
| 6390 | - aarch64_get_vec_u32 (cpu, vd, i)); |
| 6391 | return; |
| 6392 | |
| 6393 | default: |
| 6394 | HALT_UNALLOC; |
| 6395 | } |
| 6396 | } |
| 6397 | |
| 6398 | static void |
| 6399 | do_vec_FDIV (sim_cpu *cpu) |
| 6400 | { |
| 6401 | /* instr [31] = 0 |
| 6402 | instr [30] = half(0)/full(1) |
| 6403 | instr [29,23] = 10 1110 0 |
| 6404 | instr [22] = float()/double(1) |
| 6405 | instr [21] = 1 |
| 6406 | instr [20,16] = Vm |
| 6407 | instr [15,10] = 1111 11 |
| 6408 | instr [9, 5] = Vn |
| 6409 | instr [4, 0] = Vd. */ |
| 6410 | |
| 6411 | unsigned full = INSTR (30, 30); |
| 6412 | unsigned vm = INSTR (20, 16); |
| 6413 | unsigned vn = INSTR (9, 5); |
| 6414 | unsigned vd = INSTR (4, 0); |
| 6415 | unsigned i; |
| 6416 | |
| 6417 | NYI_assert (29, 23, 0x5C); |
| 6418 | NYI_assert (21, 21, 1); |
| 6419 | NYI_assert (15, 10, 0x3F); |
| 6420 | |
| 6421 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6422 | if (INSTR (22, 22)) |
| 6423 | { |
| 6424 | if (! full) |
| 6425 | HALT_UNALLOC; |
| 6426 | |
| 6427 | for (i = 0; i < 2; i++) |
| 6428 | aarch64_set_vec_double (cpu, vd, i, |
| 6429 | aarch64_get_vec_double (cpu, vn, i) |
| 6430 | / aarch64_get_vec_double (cpu, vm, i)); |
| 6431 | } |
| 6432 | else |
| 6433 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6434 | aarch64_set_vec_float (cpu, vd, i, |
| 6435 | aarch64_get_vec_float (cpu, vn, i) |
| 6436 | / aarch64_get_vec_float (cpu, vm, i)); |
| 6437 | } |
| 6438 | |
| 6439 | static void |
| 6440 | do_vec_FMUL (sim_cpu *cpu) |
| 6441 | { |
| 6442 | /* instr [31] = 0 |
| 6443 | instr [30] = half(0)/full(1) |
| 6444 | instr [29,23] = 10 1110 0 |
| 6445 | instr [22] = float(0)/double(1) |
| 6446 | instr [21] = 1 |
| 6447 | instr [20,16] = Vm |
| 6448 | instr [15,10] = 1101 11 |
| 6449 | instr [9, 5] = Vn |
| 6450 | instr [4, 0] = Vd. */ |
| 6451 | |
| 6452 | unsigned full = INSTR (30, 30); |
| 6453 | unsigned vm = INSTR (20, 16); |
| 6454 | unsigned vn = INSTR (9, 5); |
| 6455 | unsigned vd = INSTR (4, 0); |
| 6456 | unsigned i; |
| 6457 | |
| 6458 | NYI_assert (29, 23, 0x5C); |
| 6459 | NYI_assert (21, 21, 1); |
| 6460 | NYI_assert (15, 10, 0x37); |
| 6461 | |
| 6462 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6463 | if (INSTR (22, 22)) |
| 6464 | { |
| 6465 | if (! full) |
| 6466 | HALT_UNALLOC; |
| 6467 | |
| 6468 | for (i = 0; i < 2; i++) |
| 6469 | aarch64_set_vec_double (cpu, vd, i, |
| 6470 | aarch64_get_vec_double (cpu, vn, i) |
| 6471 | * aarch64_get_vec_double (cpu, vm, i)); |
| 6472 | } |
| 6473 | else |
| 6474 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6475 | aarch64_set_vec_float (cpu, vd, i, |
| 6476 | aarch64_get_vec_float (cpu, vn, i) |
| 6477 | * aarch64_get_vec_float (cpu, vm, i)); |
| 6478 | } |
| 6479 | |
| 6480 | static void |
| 6481 | do_vec_FADDP (sim_cpu *cpu) |
| 6482 | { |
| 6483 | /* instr [31] = 0 |
| 6484 | instr [30] = half(0)/full(1) |
| 6485 | instr [29,23] = 10 1110 0 |
| 6486 | instr [22] = float(0)/double(1) |
| 6487 | instr [21] = 1 |
| 6488 | instr [20,16] = Vm |
| 6489 | instr [15,10] = 1101 01 |
| 6490 | instr [9, 5] = Vn |
| 6491 | instr [4, 0] = Vd. */ |
| 6492 | |
| 6493 | unsigned full = INSTR (30, 30); |
| 6494 | unsigned vm = INSTR (20, 16); |
| 6495 | unsigned vn = INSTR (9, 5); |
| 6496 | unsigned vd = INSTR (4, 0); |
| 6497 | |
| 6498 | NYI_assert (29, 23, 0x5C); |
| 6499 | NYI_assert (21, 21, 1); |
| 6500 | NYI_assert (15, 10, 0x35); |
| 6501 | |
| 6502 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6503 | if (INSTR (22, 22)) |
| 6504 | { |
| 6505 | /* Extract values before adding them incase vd == vn/vm. */ |
| 6506 | double tmp1 = aarch64_get_vec_double (cpu, vn, 0); |
| 6507 | double tmp2 = aarch64_get_vec_double (cpu, vn, 1); |
| 6508 | double tmp3 = aarch64_get_vec_double (cpu, vm, 0); |
| 6509 | double tmp4 = aarch64_get_vec_double (cpu, vm, 1); |
| 6510 | |
| 6511 | if (! full) |
| 6512 | HALT_UNALLOC; |
| 6513 | |
| 6514 | aarch64_set_vec_double (cpu, vd, 0, tmp1 + tmp2); |
| 6515 | aarch64_set_vec_double (cpu, vd, 1, tmp3 + tmp4); |
| 6516 | } |
| 6517 | else |
| 6518 | { |
| 6519 | /* Extract values before adding them incase vd == vn/vm. */ |
| 6520 | float tmp1 = aarch64_get_vec_float (cpu, vn, 0); |
| 6521 | float tmp2 = aarch64_get_vec_float (cpu, vn, 1); |
| 6522 | float tmp5 = aarch64_get_vec_float (cpu, vm, 0); |
| 6523 | float tmp6 = aarch64_get_vec_float (cpu, vm, 1); |
| 6524 | |
| 6525 | if (full) |
| 6526 | { |
| 6527 | float tmp3 = aarch64_get_vec_float (cpu, vn, 2); |
| 6528 | float tmp4 = aarch64_get_vec_float (cpu, vn, 3); |
| 6529 | float tmp7 = aarch64_get_vec_float (cpu, vm, 2); |
| 6530 | float tmp8 = aarch64_get_vec_float (cpu, vm, 3); |
| 6531 | |
| 6532 | aarch64_set_vec_float (cpu, vd, 0, tmp1 + tmp2); |
| 6533 | aarch64_set_vec_float (cpu, vd, 1, tmp3 + tmp4); |
| 6534 | aarch64_set_vec_float (cpu, vd, 2, tmp5 + tmp6); |
| 6535 | aarch64_set_vec_float (cpu, vd, 3, tmp7 + tmp8); |
| 6536 | } |
| 6537 | else |
| 6538 | { |
| 6539 | aarch64_set_vec_float (cpu, vd, 0, tmp1 + tmp2); |
| 6540 | aarch64_set_vec_float (cpu, vd, 1, tmp5 + tmp6); |
| 6541 | } |
| 6542 | } |
| 6543 | } |
| 6544 | |
| 6545 | static void |
| 6546 | do_vec_FSQRT (sim_cpu *cpu) |
| 6547 | { |
| 6548 | /* instr[31] = 0 |
| 6549 | instr[30] = half(0)/full(1) |
| 6550 | instr[29,23] = 10 1110 1 |
| 6551 | instr[22] = single(0)/double(1) |
| 6552 | instr[21,10] = 10 0001 1111 10 |
| 6553 | instr[9,5] = Vsrc |
| 6554 | instr[4,0] = Vdest. */ |
| 6555 | |
| 6556 | unsigned vn = INSTR (9, 5); |
| 6557 | unsigned vd = INSTR (4, 0); |
| 6558 | unsigned full = INSTR (30, 30); |
| 6559 | int i; |
| 6560 | |
| 6561 | NYI_assert (29, 23, 0x5D); |
| 6562 | NYI_assert (21, 10, 0x87E); |
| 6563 | |
| 6564 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6565 | if (INSTR (22, 22)) |
| 6566 | { |
| 6567 | if (! full) |
| 6568 | HALT_UNALLOC; |
| 6569 | |
| 6570 | for (i = 0; i < 2; i++) |
| 6571 | aarch64_set_vec_double (cpu, vd, i, |
| 6572 | sqrt (aarch64_get_vec_double (cpu, vn, i))); |
| 6573 | } |
| 6574 | else |
| 6575 | { |
| 6576 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6577 | aarch64_set_vec_float (cpu, vd, i, |
| 6578 | sqrtf (aarch64_get_vec_float (cpu, vn, i))); |
| 6579 | } |
| 6580 | } |
| 6581 | |
| 6582 | static void |
| 6583 | do_vec_FNEG (sim_cpu *cpu) |
| 6584 | { |
| 6585 | /* instr[31] = 0 |
| 6586 | instr[30] = half (0)/full (1) |
| 6587 | instr[29,23] = 10 1110 1 |
| 6588 | instr[22] = single (0)/double (1) |
| 6589 | instr[21,10] = 10 0000 1111 10 |
| 6590 | instr[9,5] = Vsrc |
| 6591 | instr[4,0] = Vdest. */ |
| 6592 | |
| 6593 | unsigned vn = INSTR (9, 5); |
| 6594 | unsigned vd = INSTR (4, 0); |
| 6595 | unsigned full = INSTR (30, 30); |
| 6596 | int i; |
| 6597 | |
| 6598 | NYI_assert (29, 23, 0x5D); |
| 6599 | NYI_assert (21, 10, 0x83E); |
| 6600 | |
| 6601 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6602 | if (INSTR (22, 22)) |
| 6603 | { |
| 6604 | if (! full) |
| 6605 | HALT_UNALLOC; |
| 6606 | |
| 6607 | for (i = 0; i < 2; i++) |
| 6608 | aarch64_set_vec_double (cpu, vd, i, |
| 6609 | - aarch64_get_vec_double (cpu, vn, i)); |
| 6610 | } |
| 6611 | else |
| 6612 | { |
| 6613 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6614 | aarch64_set_vec_float (cpu, vd, i, |
| 6615 | - aarch64_get_vec_float (cpu, vn, i)); |
| 6616 | } |
| 6617 | } |
| 6618 | |
| 6619 | static void |
| 6620 | do_vec_NOT (sim_cpu *cpu) |
| 6621 | { |
| 6622 | /* instr[31] = 0 |
| 6623 | instr[30] = half (0)/full (1) |
| 6624 | instr[29,10] = 10 1110 0010 0000 0101 10 |
| 6625 | instr[9,5] = Vn |
| 6626 | instr[4.0] = Vd. */ |
| 6627 | |
| 6628 | unsigned vn = INSTR (9, 5); |
| 6629 | unsigned vd = INSTR (4, 0); |
| 6630 | unsigned i; |
| 6631 | int full = INSTR (30, 30); |
| 6632 | |
| 6633 | NYI_assert (29, 10, 0xB8816); |
| 6634 | |
| 6635 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6636 | for (i = 0; i < (full ? 16 : 8); i++) |
| 6637 | aarch64_set_vec_u8 (cpu, vd, i, ~ aarch64_get_vec_u8 (cpu, vn, i)); |
| 6638 | } |
| 6639 | |
| 6640 | static unsigned int |
| 6641 | clz (uint64_t val, unsigned size) |
| 6642 | { |
| 6643 | uint64_t mask = 1; |
| 6644 | int count; |
| 6645 | |
| 6646 | mask <<= (size - 1); |
| 6647 | count = 0; |
| 6648 | do |
| 6649 | { |
| 6650 | if (val & mask) |
| 6651 | break; |
| 6652 | mask >>= 1; |
| 6653 | count ++; |
| 6654 | } |
| 6655 | while (mask); |
| 6656 | |
| 6657 | return count; |
| 6658 | } |
| 6659 | |
| 6660 | static void |
| 6661 | do_vec_CLZ (sim_cpu *cpu) |
| 6662 | { |
| 6663 | /* instr[31] = 0 |
| 6664 | instr[30] = half (0)/full (1) |
| 6665 | instr[29,24] = 10 1110 |
| 6666 | instr[23,22] = size |
| 6667 | instr[21,10] = 10 0000 0100 10 |
| 6668 | instr[9,5] = Vn |
| 6669 | instr[4.0] = Vd. */ |
| 6670 | |
| 6671 | unsigned vn = INSTR (9, 5); |
| 6672 | unsigned vd = INSTR (4, 0); |
| 6673 | unsigned i; |
| 6674 | int full = INSTR (30,30); |
| 6675 | |
| 6676 | NYI_assert (29, 24, 0x2E); |
| 6677 | NYI_assert (21, 10, 0x812); |
| 6678 | |
| 6679 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6680 | switch (INSTR (23, 22)) |
| 6681 | { |
| 6682 | case 0: |
| 6683 | for (i = 0; i < (full ? 16 : 8); i++) |
| 6684 | aarch64_set_vec_u8 (cpu, vd, i, clz (aarch64_get_vec_u8 (cpu, vn, i), 8)); |
| 6685 | break; |
| 6686 | case 1: |
| 6687 | for (i = 0; i < (full ? 8 : 4); i++) |
| 6688 | aarch64_set_vec_u16 (cpu, vd, i, clz (aarch64_get_vec_u16 (cpu, vn, i), 16)); |
| 6689 | break; |
| 6690 | case 2: |
| 6691 | for (i = 0; i < (full ? 4 : 2); i++) |
| 6692 | aarch64_set_vec_u32 (cpu, vd, i, clz (aarch64_get_vec_u32 (cpu, vn, i), 32)); |
| 6693 | break; |
| 6694 | case 3: |
| 6695 | if (! full) |
| 6696 | HALT_UNALLOC; |
| 6697 | aarch64_set_vec_u64 (cpu, vd, 0, clz (aarch64_get_vec_u64 (cpu, vn, 0), 64)); |
| 6698 | aarch64_set_vec_u64 (cpu, vd, 1, clz (aarch64_get_vec_u64 (cpu, vn, 1), 64)); |
| 6699 | break; |
| 6700 | } |
| 6701 | } |
| 6702 | |
| 6703 | static void |
| 6704 | do_vec_MOV_element (sim_cpu *cpu) |
| 6705 | { |
| 6706 | /* instr[31,21] = 0110 1110 000 |
| 6707 | instr[20,16] = size & dest index |
| 6708 | instr[15] = 0 |
| 6709 | instr[14,11] = source index |
| 6710 | instr[10] = 1 |
| 6711 | instr[9,5] = Vs |
| 6712 | instr[4.0] = Vd. */ |
| 6713 | |
| 6714 | unsigned vs = INSTR (9, 5); |
| 6715 | unsigned vd = INSTR (4, 0); |
| 6716 | unsigned src_index; |
| 6717 | unsigned dst_index; |
| 6718 | |
| 6719 | NYI_assert (31, 21, 0x370); |
| 6720 | NYI_assert (15, 15, 0); |
| 6721 | NYI_assert (10, 10, 1); |
| 6722 | |
| 6723 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6724 | if (INSTR (16, 16)) |
| 6725 | { |
| 6726 | /* Move a byte. */ |
| 6727 | src_index = INSTR (14, 11); |
| 6728 | dst_index = INSTR (20, 17); |
| 6729 | aarch64_set_vec_u8 (cpu, vd, dst_index, |
| 6730 | aarch64_get_vec_u8 (cpu, vs, src_index)); |
| 6731 | } |
| 6732 | else if (INSTR (17, 17)) |
| 6733 | { |
| 6734 | /* Move 16-bits. */ |
| 6735 | NYI_assert (11, 11, 0); |
| 6736 | src_index = INSTR (14, 12); |
| 6737 | dst_index = INSTR (20, 18); |
| 6738 | aarch64_set_vec_u16 (cpu, vd, dst_index, |
| 6739 | aarch64_get_vec_u16 (cpu, vs, src_index)); |
| 6740 | } |
| 6741 | else if (INSTR (18, 18)) |
| 6742 | { |
| 6743 | /* Move 32-bits. */ |
| 6744 | NYI_assert (12, 11, 0); |
| 6745 | src_index = INSTR (14, 13); |
| 6746 | dst_index = INSTR (20, 19); |
| 6747 | aarch64_set_vec_u32 (cpu, vd, dst_index, |
| 6748 | aarch64_get_vec_u32 (cpu, vs, src_index)); |
| 6749 | } |
| 6750 | else |
| 6751 | { |
| 6752 | NYI_assert (19, 19, 1); |
| 6753 | NYI_assert (13, 11, 0); |
| 6754 | src_index = INSTR (14, 14); |
| 6755 | dst_index = INSTR (20, 20); |
| 6756 | aarch64_set_vec_u64 (cpu, vd, dst_index, |
| 6757 | aarch64_get_vec_u64 (cpu, vs, src_index)); |
| 6758 | } |
| 6759 | } |
| 6760 | |
| 6761 | static void |
| 6762 | do_vec_REV32 (sim_cpu *cpu) |
| 6763 | { |
| 6764 | /* instr[31] = 0 |
| 6765 | instr[30] = full/half |
| 6766 | instr[29,24] = 10 1110 |
| 6767 | instr[23,22] = size |
| 6768 | instr[21,10] = 10 0000 0000 10 |
| 6769 | instr[9,5] = Rn |
| 6770 | instr[4,0] = Rd. */ |
| 6771 | |
| 6772 | unsigned rn = INSTR (9, 5); |
| 6773 | unsigned rd = INSTR (4, 0); |
| 6774 | unsigned size = INSTR (23, 22); |
| 6775 | unsigned full = INSTR (30, 30); |
| 6776 | unsigned i; |
| 6777 | FRegister val; |
| 6778 | |
| 6779 | NYI_assert (29, 24, 0x2E); |
| 6780 | NYI_assert (21, 10, 0x802); |
| 6781 | |
| 6782 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6783 | switch (size) |
| 6784 | { |
| 6785 | case 0: |
| 6786 | for (i = 0; i < (full ? 16 : 8); i++) |
| 6787 | val.b[i ^ 0x3] = aarch64_get_vec_u8 (cpu, rn, i); |
| 6788 | break; |
| 6789 | |
| 6790 | case 1: |
| 6791 | for (i = 0; i < (full ? 8 : 4); i++) |
| 6792 | val.h[i ^ 0x1] = aarch64_get_vec_u16 (cpu, rn, i); |
| 6793 | break; |
| 6794 | |
| 6795 | default: |
| 6796 | HALT_UNALLOC; |
| 6797 | } |
| 6798 | |
| 6799 | aarch64_set_vec_u64 (cpu, rd, 0, val.v[0]); |
| 6800 | if (full) |
| 6801 | aarch64_set_vec_u64 (cpu, rd, 1, val.v[1]); |
| 6802 | } |
| 6803 | |
| 6804 | static void |
| 6805 | do_vec_EXT (sim_cpu *cpu) |
| 6806 | { |
| 6807 | /* instr[31] = 0 |
| 6808 | instr[30] = full/half |
| 6809 | instr[29,21] = 10 1110 000 |
| 6810 | instr[20,16] = Vm |
| 6811 | instr[15] = 0 |
| 6812 | instr[14,11] = source index |
| 6813 | instr[10] = 0 |
| 6814 | instr[9,5] = Vn |
| 6815 | instr[4.0] = Vd. */ |
| 6816 | |
| 6817 | unsigned vm = INSTR (20, 16); |
| 6818 | unsigned vn = INSTR (9, 5); |
| 6819 | unsigned vd = INSTR (4, 0); |
| 6820 | unsigned src_index = INSTR (14, 11); |
| 6821 | unsigned full = INSTR (30, 30); |
| 6822 | unsigned i; |
| 6823 | unsigned j; |
| 6824 | FRegister val; |
| 6825 | |
| 6826 | NYI_assert (31, 21, 0x370); |
| 6827 | NYI_assert (15, 15, 0); |
| 6828 | NYI_assert (10, 10, 0); |
| 6829 | |
| 6830 | if (!full && (src_index & 0x8)) |
| 6831 | HALT_UNALLOC; |
| 6832 | |
| 6833 | j = 0; |
| 6834 | |
| 6835 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6836 | for (i = src_index; i < (full ? 16 : 8); i++) |
| 6837 | val.b[j ++] = aarch64_get_vec_u8 (cpu, vn, i); |
| 6838 | for (i = 0; i < src_index; i++) |
| 6839 | val.b[j ++] = aarch64_get_vec_u8 (cpu, vm, i); |
| 6840 | |
| 6841 | aarch64_set_vec_u64 (cpu, vd, 0, val.v[0]); |
| 6842 | if (full) |
| 6843 | aarch64_set_vec_u64 (cpu, vd, 1, val.v[1]); |
| 6844 | } |
| 6845 | |
| 6846 | static void |
| 6847 | dexAdvSIMD0 (sim_cpu *cpu) |
| 6848 | { |
| 6849 | /* instr [28,25] = 0 111. */ |
| 6850 | if ( INSTR (15, 10) == 0x07 |
| 6851 | && (INSTR (9, 5) == |
| 6852 | INSTR (20, 16))) |
| 6853 | { |
| 6854 | if (INSTR (31, 21) == 0x075 |
| 6855 | || INSTR (31, 21) == 0x275) |
| 6856 | { |
| 6857 | do_vec_MOV_whole_vector (cpu); |
| 6858 | return; |
| 6859 | } |
| 6860 | } |
| 6861 | |
| 6862 | if (INSTR (29, 19) == 0x1E0) |
| 6863 | { |
| 6864 | do_vec_MOV_immediate (cpu); |
| 6865 | return; |
| 6866 | } |
| 6867 | |
| 6868 | if (INSTR (29, 19) == 0x5E0) |
| 6869 | { |
| 6870 | do_vec_MVNI (cpu); |
| 6871 | return; |
| 6872 | } |
| 6873 | |
| 6874 | if (INSTR (29, 19) == 0x1C0 |
| 6875 | || INSTR (29, 19) == 0x1C1) |
| 6876 | { |
| 6877 | if (INSTR (15, 10) == 0x03) |
| 6878 | { |
| 6879 | do_vec_DUP_scalar_into_vector (cpu); |
| 6880 | return; |
| 6881 | } |
| 6882 | } |
| 6883 | |
| 6884 | switch (INSTR (29, 24)) |
| 6885 | { |
| 6886 | case 0x0E: do_vec_op1 (cpu); return; |
| 6887 | case 0x0F: do_vec_op2 (cpu); return; |
| 6888 | |
| 6889 | case 0x2E: |
| 6890 | if (INSTR (21, 21) == 1) |
| 6891 | { |
| 6892 | switch (INSTR (15, 10)) |
| 6893 | { |
| 6894 | case 0x02: |
| 6895 | do_vec_REV32 (cpu); |
| 6896 | return; |
| 6897 | |
| 6898 | case 0x07: |
| 6899 | switch (INSTR (23, 22)) |
| 6900 | { |
| 6901 | case 0: do_vec_EOR (cpu); return; |
| 6902 | case 1: do_vec_BSL (cpu); return; |
| 6903 | case 2: |
| 6904 | case 3: do_vec_bit (cpu); return; |
| 6905 | } |
| 6906 | break; |
| 6907 | |
| 6908 | case 0x08: do_vec_sub_long (cpu); return; |
| 6909 | case 0x11: do_vec_USHL (cpu); return; |
| 6910 | case 0x12: do_vec_CLZ (cpu); return; |
| 6911 | case 0x16: do_vec_NOT (cpu); return; |
| 6912 | case 0x19: do_vec_max (cpu); return; |
| 6913 | case 0x1B: do_vec_min (cpu); return; |
| 6914 | case 0x21: do_vec_SUB (cpu); return; |
| 6915 | case 0x25: do_vec_MLS (cpu); return; |
| 6916 | case 0x31: do_vec_FminmaxNMP (cpu); return; |
| 6917 | case 0x35: do_vec_FADDP (cpu); return; |
| 6918 | case 0x37: do_vec_FMUL (cpu); return; |
| 6919 | case 0x3F: do_vec_FDIV (cpu); return; |
| 6920 | |
| 6921 | case 0x3E: |
| 6922 | switch (INSTR (20, 16)) |
| 6923 | { |
| 6924 | case 0x00: do_vec_FNEG (cpu); return; |
| 6925 | case 0x01: do_vec_FSQRT (cpu); return; |
| 6926 | default: HALT_NYI; |
| 6927 | } |
| 6928 | |
| 6929 | case 0x0D: |
| 6930 | case 0x0F: |
| 6931 | case 0x22: |
| 6932 | case 0x23: |
| 6933 | case 0x26: |
| 6934 | case 0x2A: |
| 6935 | case 0x32: |
| 6936 | case 0x36: |
| 6937 | case 0x39: |
| 6938 | case 0x3A: |
| 6939 | do_vec_compare (cpu); return; |
| 6940 | |
| 6941 | default: |
| 6942 | break; |
| 6943 | } |
| 6944 | } |
| 6945 | |
| 6946 | if (INSTR (31, 21) == 0x370) |
| 6947 | { |
| 6948 | if (INSTR (10, 10)) |
| 6949 | do_vec_MOV_element (cpu); |
| 6950 | else |
| 6951 | do_vec_EXT (cpu); |
| 6952 | return; |
| 6953 | } |
| 6954 | |
| 6955 | switch (INSTR (21, 10)) |
| 6956 | { |
| 6957 | case 0x82E: do_vec_neg (cpu); return; |
| 6958 | case 0x87E: do_vec_sqrt (cpu); return; |
| 6959 | default: |
| 6960 | if (INSTR (15, 10) == 0x30) |
| 6961 | { |
| 6962 | do_vec_mull (cpu); |
| 6963 | return; |
| 6964 | } |
| 6965 | break; |
| 6966 | } |
| 6967 | break; |
| 6968 | |
| 6969 | case 0x2f: |
| 6970 | switch (INSTR (15, 10)) |
| 6971 | { |
| 6972 | case 0x01: do_vec_SSHR_USHR (cpu); return; |
| 6973 | case 0x10: |
| 6974 | case 0x12: do_vec_mls_indexed (cpu); return; |
| 6975 | case 0x29: do_vec_xtl (cpu); return; |
| 6976 | default: |
| 6977 | HALT_NYI; |
| 6978 | } |
| 6979 | |
| 6980 | default: |
| 6981 | break; |
| 6982 | } |
| 6983 | |
| 6984 | HALT_NYI; |
| 6985 | } |
| 6986 | |
| 6987 | /* 3 sources. */ |
| 6988 | |
| 6989 | /* Float multiply add. */ |
| 6990 | static void |
| 6991 | fmadds (sim_cpu *cpu) |
| 6992 | { |
| 6993 | unsigned sa = INSTR (14, 10); |
| 6994 | unsigned sm = INSTR (20, 16); |
| 6995 | unsigned sn = INSTR ( 9, 5); |
| 6996 | unsigned sd = INSTR ( 4, 0); |
| 6997 | |
| 6998 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 6999 | aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sa) |
| 7000 | + aarch64_get_FP_float (cpu, sn) |
| 7001 | * aarch64_get_FP_float (cpu, sm)); |
| 7002 | } |
| 7003 | |
| 7004 | /* Double multiply add. */ |
| 7005 | static void |
| 7006 | fmaddd (sim_cpu *cpu) |
| 7007 | { |
| 7008 | unsigned sa = INSTR (14, 10); |
| 7009 | unsigned sm = INSTR (20, 16); |
| 7010 | unsigned sn = INSTR ( 9, 5); |
| 7011 | unsigned sd = INSTR ( 4, 0); |
| 7012 | |
| 7013 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7014 | aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sa) |
| 7015 | + aarch64_get_FP_double (cpu, sn) |
| 7016 | * aarch64_get_FP_double (cpu, sm)); |
| 7017 | } |
| 7018 | |
| 7019 | /* Float multiply subtract. */ |
| 7020 | static void |
| 7021 | fmsubs (sim_cpu *cpu) |
| 7022 | { |
| 7023 | unsigned sa = INSTR (14, 10); |
| 7024 | unsigned sm = INSTR (20, 16); |
| 7025 | unsigned sn = INSTR ( 9, 5); |
| 7026 | unsigned sd = INSTR ( 4, 0); |
| 7027 | |
| 7028 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7029 | aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sa) |
| 7030 | - aarch64_get_FP_float (cpu, sn) |
| 7031 | * aarch64_get_FP_float (cpu, sm)); |
| 7032 | } |
| 7033 | |
| 7034 | /* Double multiply subtract. */ |
| 7035 | static void |
| 7036 | fmsubd (sim_cpu *cpu) |
| 7037 | { |
| 7038 | unsigned sa = INSTR (14, 10); |
| 7039 | unsigned sm = INSTR (20, 16); |
| 7040 | unsigned sn = INSTR ( 9, 5); |
| 7041 | unsigned sd = INSTR ( 4, 0); |
| 7042 | |
| 7043 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7044 | aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sa) |
| 7045 | - aarch64_get_FP_double (cpu, sn) |
| 7046 | * aarch64_get_FP_double (cpu, sm)); |
| 7047 | } |
| 7048 | |
| 7049 | /* Float negative multiply add. */ |
| 7050 | static void |
| 7051 | fnmadds (sim_cpu *cpu) |
| 7052 | { |
| 7053 | unsigned sa = INSTR (14, 10); |
| 7054 | unsigned sm = INSTR (20, 16); |
| 7055 | unsigned sn = INSTR ( 9, 5); |
| 7056 | unsigned sd = INSTR ( 4, 0); |
| 7057 | |
| 7058 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7059 | aarch64_set_FP_float (cpu, sd, - aarch64_get_FP_float (cpu, sa) |
| 7060 | + (- aarch64_get_FP_float (cpu, sn)) |
| 7061 | * aarch64_get_FP_float (cpu, sm)); |
| 7062 | } |
| 7063 | |
| 7064 | /* Double negative multiply add. */ |
| 7065 | static void |
| 7066 | fnmaddd (sim_cpu *cpu) |
| 7067 | { |
| 7068 | unsigned sa = INSTR (14, 10); |
| 7069 | unsigned sm = INSTR (20, 16); |
| 7070 | unsigned sn = INSTR ( 9, 5); |
| 7071 | unsigned sd = INSTR ( 4, 0); |
| 7072 | |
| 7073 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7074 | aarch64_set_FP_double (cpu, sd, - aarch64_get_FP_double (cpu, sa) |
| 7075 | + (- aarch64_get_FP_double (cpu, sn)) |
| 7076 | * aarch64_get_FP_double (cpu, sm)); |
| 7077 | } |
| 7078 | |
| 7079 | /* Float negative multiply subtract. */ |
| 7080 | static void |
| 7081 | fnmsubs (sim_cpu *cpu) |
| 7082 | { |
| 7083 | unsigned sa = INSTR (14, 10); |
| 7084 | unsigned sm = INSTR (20, 16); |
| 7085 | unsigned sn = INSTR ( 9, 5); |
| 7086 | unsigned sd = INSTR ( 4, 0); |
| 7087 | |
| 7088 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7089 | aarch64_set_FP_float (cpu, sd, - aarch64_get_FP_float (cpu, sa) |
| 7090 | + aarch64_get_FP_float (cpu, sn) |
| 7091 | * aarch64_get_FP_float (cpu, sm)); |
| 7092 | } |
| 7093 | |
| 7094 | /* Double negative multiply subtract. */ |
| 7095 | static void |
| 7096 | fnmsubd (sim_cpu *cpu) |
| 7097 | { |
| 7098 | unsigned sa = INSTR (14, 10); |
| 7099 | unsigned sm = INSTR (20, 16); |
| 7100 | unsigned sn = INSTR ( 9, 5); |
| 7101 | unsigned sd = INSTR ( 4, 0); |
| 7102 | |
| 7103 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7104 | aarch64_set_FP_double (cpu, sd, - aarch64_get_FP_double (cpu, sa) |
| 7105 | + aarch64_get_FP_double (cpu, sn) |
| 7106 | * aarch64_get_FP_double (cpu, sm)); |
| 7107 | } |
| 7108 | |
| 7109 | static void |
| 7110 | dexSimpleFPDataProc3Source (sim_cpu *cpu) |
| 7111 | { |
| 7112 | /* instr[31] ==> M : 0 ==> OK, 1 ==> UNALLOC |
| 7113 | instr[30] = 0 |
| 7114 | instr[29] ==> S : 0 ==> OK, 1 ==> UNALLOC |
| 7115 | instr[28,25] = 1111 |
| 7116 | instr[24] = 1 |
| 7117 | instr[23,22] ==> type : 0 ==> single, 01 ==> double, 1x ==> UNALLOC |
| 7118 | instr[21] ==> o1 : 0 ==> unnegated, 1 ==> negated |
| 7119 | instr[15] ==> o2 : 0 ==> ADD, 1 ==> SUB */ |
| 7120 | |
| 7121 | uint32_t M_S = (INSTR (31, 31) << 1) | INSTR (29, 29); |
| 7122 | /* dispatch on combined type:o1:o2. */ |
| 7123 | uint32_t dispatch = (INSTR (23, 21) << 1) | INSTR (15, 15); |
| 7124 | |
| 7125 | if (M_S != 0) |
| 7126 | HALT_UNALLOC; |
| 7127 | |
| 7128 | switch (dispatch) |
| 7129 | { |
| 7130 | case 0: fmadds (cpu); return; |
| 7131 | case 1: fmsubs (cpu); return; |
| 7132 | case 2: fnmadds (cpu); return; |
| 7133 | case 3: fnmsubs (cpu); return; |
| 7134 | case 4: fmaddd (cpu); return; |
| 7135 | case 5: fmsubd (cpu); return; |
| 7136 | case 6: fnmaddd (cpu); return; |
| 7137 | case 7: fnmsubd (cpu); return; |
| 7138 | default: |
| 7139 | /* type > 1 is currently unallocated. */ |
| 7140 | HALT_UNALLOC; |
| 7141 | } |
| 7142 | } |
| 7143 | |
| 7144 | static void |
| 7145 | dexSimpleFPFixedConvert (sim_cpu *cpu) |
| 7146 | { |
| 7147 | HALT_NYI; |
| 7148 | } |
| 7149 | |
| 7150 | static void |
| 7151 | dexSimpleFPCondCompare (sim_cpu *cpu) |
| 7152 | { |
| 7153 | /* instr [31,23] = 0001 1110 0 |
| 7154 | instr [22] = type |
| 7155 | instr [21] = 1 |
| 7156 | instr [20,16] = Rm |
| 7157 | instr [15,12] = condition |
| 7158 | instr [11,10] = 01 |
| 7159 | instr [9,5] = Rn |
| 7160 | instr [4] = 0 |
| 7161 | instr [3,0] = nzcv */ |
| 7162 | |
| 7163 | unsigned rm = INSTR (20, 16); |
| 7164 | unsigned rn = INSTR (9, 5); |
| 7165 | |
| 7166 | NYI_assert (31, 23, 0x3C); |
| 7167 | NYI_assert (11, 10, 0x1); |
| 7168 | NYI_assert (4, 4, 0); |
| 7169 | |
| 7170 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7171 | if (! testConditionCode (cpu, INSTR (15, 12))) |
| 7172 | { |
| 7173 | aarch64_set_CPSR (cpu, INSTR (3, 0)); |
| 7174 | return; |
| 7175 | } |
| 7176 | |
| 7177 | if (INSTR (22, 22)) |
| 7178 | { |
| 7179 | /* Double precision. */ |
| 7180 | double val1 = aarch64_get_vec_double (cpu, rn, 0); |
| 7181 | double val2 = aarch64_get_vec_double (cpu, rm, 0); |
| 7182 | |
| 7183 | /* FIXME: Check for NaNs. */ |
| 7184 | if (val1 == val2) |
| 7185 | aarch64_set_CPSR (cpu, (Z | C)); |
| 7186 | else if (val1 < val2) |
| 7187 | aarch64_set_CPSR (cpu, N); |
| 7188 | else /* val1 > val2 */ |
| 7189 | aarch64_set_CPSR (cpu, C); |
| 7190 | } |
| 7191 | else |
| 7192 | { |
| 7193 | /* Single precision. */ |
| 7194 | float val1 = aarch64_get_vec_float (cpu, rn, 0); |
| 7195 | float val2 = aarch64_get_vec_float (cpu, rm, 0); |
| 7196 | |
| 7197 | /* FIXME: Check for NaNs. */ |
| 7198 | if (val1 == val2) |
| 7199 | aarch64_set_CPSR (cpu, (Z | C)); |
| 7200 | else if (val1 < val2) |
| 7201 | aarch64_set_CPSR (cpu, N); |
| 7202 | else /* val1 > val2 */ |
| 7203 | aarch64_set_CPSR (cpu, C); |
| 7204 | } |
| 7205 | } |
| 7206 | |
| 7207 | /* 2 sources. */ |
| 7208 | |
| 7209 | /* Float add. */ |
| 7210 | static void |
| 7211 | fadds (sim_cpu *cpu) |
| 7212 | { |
| 7213 | unsigned sm = INSTR (20, 16); |
| 7214 | unsigned sn = INSTR ( 9, 5); |
| 7215 | unsigned sd = INSTR ( 4, 0); |
| 7216 | |
| 7217 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7218 | aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sn) |
| 7219 | + aarch64_get_FP_float (cpu, sm)); |
| 7220 | } |
| 7221 | |
| 7222 | /* Double add. */ |
| 7223 | static void |
| 7224 | faddd (sim_cpu *cpu) |
| 7225 | { |
| 7226 | unsigned sm = INSTR (20, 16); |
| 7227 | unsigned sn = INSTR ( 9, 5); |
| 7228 | unsigned sd = INSTR ( 4, 0); |
| 7229 | |
| 7230 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7231 | aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sn) |
| 7232 | + aarch64_get_FP_double (cpu, sm)); |
| 7233 | } |
| 7234 | |
| 7235 | /* Float divide. */ |
| 7236 | static void |
| 7237 | fdivs (sim_cpu *cpu) |
| 7238 | { |
| 7239 | unsigned sm = INSTR (20, 16); |
| 7240 | unsigned sn = INSTR ( 9, 5); |
| 7241 | unsigned sd = INSTR ( 4, 0); |
| 7242 | |
| 7243 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7244 | aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sn) |
| 7245 | / aarch64_get_FP_float (cpu, sm)); |
| 7246 | } |
| 7247 | |
| 7248 | /* Double divide. */ |
| 7249 | static void |
| 7250 | fdivd (sim_cpu *cpu) |
| 7251 | { |
| 7252 | unsigned sm = INSTR (20, 16); |
| 7253 | unsigned sn = INSTR ( 9, 5); |
| 7254 | unsigned sd = INSTR ( 4, 0); |
| 7255 | |
| 7256 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7257 | aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sn) |
| 7258 | / aarch64_get_FP_double (cpu, sm)); |
| 7259 | } |
| 7260 | |
| 7261 | /* Float multiply. */ |
| 7262 | static void |
| 7263 | fmuls (sim_cpu *cpu) |
| 7264 | { |
| 7265 | unsigned sm = INSTR (20, 16); |
| 7266 | unsigned sn = INSTR ( 9, 5); |
| 7267 | unsigned sd = INSTR ( 4, 0); |
| 7268 | |
| 7269 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7270 | aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sn) |
| 7271 | * aarch64_get_FP_float (cpu, sm)); |
| 7272 | } |
| 7273 | |
| 7274 | /* Double multiply. */ |
| 7275 | static void |
| 7276 | fmuld (sim_cpu *cpu) |
| 7277 | { |
| 7278 | unsigned sm = INSTR (20, 16); |
| 7279 | unsigned sn = INSTR ( 9, 5); |
| 7280 | unsigned sd = INSTR ( 4, 0); |
| 7281 | |
| 7282 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7283 | aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sn) |
| 7284 | * aarch64_get_FP_double (cpu, sm)); |
| 7285 | } |
| 7286 | |
| 7287 | /* Float negate and multiply. */ |
| 7288 | static void |
| 7289 | fnmuls (sim_cpu *cpu) |
| 7290 | { |
| 7291 | unsigned sm = INSTR (20, 16); |
| 7292 | unsigned sn = INSTR ( 9, 5); |
| 7293 | unsigned sd = INSTR ( 4, 0); |
| 7294 | |
| 7295 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7296 | aarch64_set_FP_float (cpu, sd, - (aarch64_get_FP_float (cpu, sn) |
| 7297 | * aarch64_get_FP_float (cpu, sm))); |
| 7298 | } |
| 7299 | |
| 7300 | /* Double negate and multiply. */ |
| 7301 | static void |
| 7302 | fnmuld (sim_cpu *cpu) |
| 7303 | { |
| 7304 | unsigned sm = INSTR (20, 16); |
| 7305 | unsigned sn = INSTR ( 9, 5); |
| 7306 | unsigned sd = INSTR ( 4, 0); |
| 7307 | |
| 7308 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7309 | aarch64_set_FP_double (cpu, sd, - (aarch64_get_FP_double (cpu, sn) |
| 7310 | * aarch64_get_FP_double (cpu, sm))); |
| 7311 | } |
| 7312 | |
| 7313 | /* Float subtract. */ |
| 7314 | static void |
| 7315 | fsubs (sim_cpu *cpu) |
| 7316 | { |
| 7317 | unsigned sm = INSTR (20, 16); |
| 7318 | unsigned sn = INSTR ( 9, 5); |
| 7319 | unsigned sd = INSTR ( 4, 0); |
| 7320 | |
| 7321 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7322 | aarch64_set_FP_float (cpu, sd, aarch64_get_FP_float (cpu, sn) |
| 7323 | - aarch64_get_FP_float (cpu, sm)); |
| 7324 | } |
| 7325 | |
| 7326 | /* Double subtract. */ |
| 7327 | static void |
| 7328 | fsubd (sim_cpu *cpu) |
| 7329 | { |
| 7330 | unsigned sm = INSTR (20, 16); |
| 7331 | unsigned sn = INSTR ( 9, 5); |
| 7332 | unsigned sd = INSTR ( 4, 0); |
| 7333 | |
| 7334 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7335 | aarch64_set_FP_double (cpu, sd, aarch64_get_FP_double (cpu, sn) |
| 7336 | - aarch64_get_FP_double (cpu, sm)); |
| 7337 | } |
| 7338 | |
| 7339 | static void |
| 7340 | do_FMINNM (sim_cpu *cpu) |
| 7341 | { |
| 7342 | /* instr[31,23] = 0 0011 1100 |
| 7343 | instr[22] = float(0)/double(1) |
| 7344 | instr[21] = 1 |
| 7345 | instr[20,16] = Sm |
| 7346 | instr[15,10] = 01 1110 |
| 7347 | instr[9,5] = Sn |
| 7348 | instr[4,0] = Cpu */ |
| 7349 | |
| 7350 | unsigned sm = INSTR (20, 16); |
| 7351 | unsigned sn = INSTR ( 9, 5); |
| 7352 | unsigned sd = INSTR ( 4, 0); |
| 7353 | |
| 7354 | NYI_assert (31, 23, 0x03C); |
| 7355 | NYI_assert (15, 10, 0x1E); |
| 7356 | |
| 7357 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7358 | if (INSTR (22, 22)) |
| 7359 | aarch64_set_FP_double (cpu, sd, |
| 7360 | dminnm (aarch64_get_FP_double (cpu, sn), |
| 7361 | aarch64_get_FP_double (cpu, sm))); |
| 7362 | else |
| 7363 | aarch64_set_FP_float (cpu, sd, |
| 7364 | fminnm (aarch64_get_FP_float (cpu, sn), |
| 7365 | aarch64_get_FP_float (cpu, sm))); |
| 7366 | } |
| 7367 | |
| 7368 | static void |
| 7369 | do_FMAXNM (sim_cpu *cpu) |
| 7370 | { |
| 7371 | /* instr[31,23] = 0 0011 1100 |
| 7372 | instr[22] = float(0)/double(1) |
| 7373 | instr[21] = 1 |
| 7374 | instr[20,16] = Sm |
| 7375 | instr[15,10] = 01 1010 |
| 7376 | instr[9,5] = Sn |
| 7377 | instr[4,0] = Cpu */ |
| 7378 | |
| 7379 | unsigned sm = INSTR (20, 16); |
| 7380 | unsigned sn = INSTR ( 9, 5); |
| 7381 | unsigned sd = INSTR ( 4, 0); |
| 7382 | |
| 7383 | NYI_assert (31, 23, 0x03C); |
| 7384 | NYI_assert (15, 10, 0x1A); |
| 7385 | |
| 7386 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7387 | if (INSTR (22, 22)) |
| 7388 | aarch64_set_FP_double (cpu, sd, |
| 7389 | dmaxnm (aarch64_get_FP_double (cpu, sn), |
| 7390 | aarch64_get_FP_double (cpu, sm))); |
| 7391 | else |
| 7392 | aarch64_set_FP_float (cpu, sd, |
| 7393 | fmaxnm (aarch64_get_FP_float (cpu, sn), |
| 7394 | aarch64_get_FP_float (cpu, sm))); |
| 7395 | } |
| 7396 | |
| 7397 | static void |
| 7398 | dexSimpleFPDataProc2Source (sim_cpu *cpu) |
| 7399 | { |
| 7400 | /* instr[31] ==> M : 0 ==> OK, 1 ==> UNALLOC |
| 7401 | instr[30] = 0 |
| 7402 | instr[29] ==> S : 0 ==> OK, 1 ==> UNALLOC |
| 7403 | instr[28,25] = 1111 |
| 7404 | instr[24] = 0 |
| 7405 | instr[23,22] ==> type : 0 ==> single, 01 ==> double, 1x ==> UNALLOC |
| 7406 | instr[21] = 1 |
| 7407 | instr[20,16] = Vm |
| 7408 | instr[15,12] ==> opcode : 0000 ==> FMUL, 0001 ==> FDIV |
| 7409 | 0010 ==> FADD, 0011 ==> FSUB, |
| 7410 | 0100 ==> FMAX, 0101 ==> FMIN |
| 7411 | 0110 ==> FMAXNM, 0111 ==> FMINNM |
| 7412 | 1000 ==> FNMUL, ow ==> UNALLOC |
| 7413 | instr[11,10] = 10 |
| 7414 | instr[9,5] = Vn |
| 7415 | instr[4,0] = Vd */ |
| 7416 | |
| 7417 | uint32_t M_S = (INSTR (31, 31) << 1) | INSTR (29, 29); |
| 7418 | uint32_t type = INSTR (23, 22); |
| 7419 | /* Dispatch on opcode. */ |
| 7420 | uint32_t dispatch = INSTR (15, 12); |
| 7421 | |
| 7422 | if (type > 1) |
| 7423 | HALT_UNALLOC; |
| 7424 | |
| 7425 | if (M_S != 0) |
| 7426 | HALT_UNALLOC; |
| 7427 | |
| 7428 | if (type) |
| 7429 | switch (dispatch) |
| 7430 | { |
| 7431 | case 0: fmuld (cpu); return; |
| 7432 | case 1: fdivd (cpu); return; |
| 7433 | case 2: faddd (cpu); return; |
| 7434 | case 3: fsubd (cpu); return; |
| 7435 | case 6: do_FMAXNM (cpu); return; |
| 7436 | case 7: do_FMINNM (cpu); return; |
| 7437 | case 8: fnmuld (cpu); return; |
| 7438 | |
| 7439 | /* Have not yet implemented fmax and fmin. */ |
| 7440 | case 4: |
| 7441 | case 5: |
| 7442 | HALT_NYI; |
| 7443 | |
| 7444 | default: |
| 7445 | HALT_UNALLOC; |
| 7446 | } |
| 7447 | else /* type == 0 => floats. */ |
| 7448 | switch (dispatch) |
| 7449 | { |
| 7450 | case 0: fmuls (cpu); return; |
| 7451 | case 1: fdivs (cpu); return; |
| 7452 | case 2: fadds (cpu); return; |
| 7453 | case 3: fsubs (cpu); return; |
| 7454 | case 6: do_FMAXNM (cpu); return; |
| 7455 | case 7: do_FMINNM (cpu); return; |
| 7456 | case 8: fnmuls (cpu); return; |
| 7457 | |
| 7458 | case 4: |
| 7459 | case 5: |
| 7460 | HALT_NYI; |
| 7461 | |
| 7462 | default: |
| 7463 | HALT_UNALLOC; |
| 7464 | } |
| 7465 | } |
| 7466 | |
| 7467 | static void |
| 7468 | dexSimpleFPCondSelect (sim_cpu *cpu) |
| 7469 | { |
| 7470 | /* FCSEL |
| 7471 | instr[31,23] = 0 0011 1100 |
| 7472 | instr[22] = 0=>single 1=>double |
| 7473 | instr[21] = 1 |
| 7474 | instr[20,16] = Sm |
| 7475 | instr[15,12] = cond |
| 7476 | instr[11,10] = 11 |
| 7477 | instr[9,5] = Sn |
| 7478 | instr[4,0] = Cpu */ |
| 7479 | unsigned sm = INSTR (20, 16); |
| 7480 | unsigned sn = INSTR ( 9, 5); |
| 7481 | unsigned sd = INSTR ( 4, 0); |
| 7482 | uint32_t set = testConditionCode (cpu, INSTR (15, 12)); |
| 7483 | |
| 7484 | NYI_assert (31, 23, 0x03C); |
| 7485 | NYI_assert (11, 10, 0x3); |
| 7486 | |
| 7487 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7488 | if (INSTR (22, 22)) |
| 7489 | aarch64_set_FP_double (cpu, sd, set ? sn : sm); |
| 7490 | else |
| 7491 | aarch64_set_FP_float (cpu, sd, set ? sn : sm); |
| 7492 | } |
| 7493 | |
| 7494 | /* Store 32 bit unscaled signed 9 bit. */ |
| 7495 | static void |
| 7496 | fsturs (sim_cpu *cpu, int32_t offset) |
| 7497 | { |
| 7498 | unsigned int rn = INSTR (9, 5); |
| 7499 | unsigned int st = INSTR (4, 0); |
| 7500 | |
| 7501 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7502 | aarch64_set_mem_u32 (cpu, aarch64_get_reg_u64 (cpu, st, 1) + offset, |
| 7503 | aarch64_get_vec_u32 (cpu, rn, 0)); |
| 7504 | } |
| 7505 | |
| 7506 | /* Store 64 bit unscaled signed 9 bit. */ |
| 7507 | static void |
| 7508 | fsturd (sim_cpu *cpu, int32_t offset) |
| 7509 | { |
| 7510 | unsigned int rn = INSTR (9, 5); |
| 7511 | unsigned int st = INSTR (4, 0); |
| 7512 | |
| 7513 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7514 | aarch64_set_mem_u64 (cpu, aarch64_get_reg_u64 (cpu, st, 1) + offset, |
| 7515 | aarch64_get_vec_u64 (cpu, rn, 0)); |
| 7516 | } |
| 7517 | |
| 7518 | /* Store 128 bit unscaled signed 9 bit. */ |
| 7519 | static void |
| 7520 | fsturq (sim_cpu *cpu, int32_t offset) |
| 7521 | { |
| 7522 | unsigned int rn = INSTR (9, 5); |
| 7523 | unsigned int st = INSTR (4, 0); |
| 7524 | FRegister a; |
| 7525 | |
| 7526 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7527 | aarch64_get_FP_long_double (cpu, rn, & a); |
| 7528 | aarch64_set_mem_long_double (cpu, |
| 7529 | aarch64_get_reg_u64 (cpu, st, 1) |
| 7530 | + offset, a); |
| 7531 | } |
| 7532 | |
| 7533 | /* TODO FP move register. */ |
| 7534 | |
| 7535 | /* 32 bit fp to fp move register. */ |
| 7536 | static void |
| 7537 | ffmovs (sim_cpu *cpu) |
| 7538 | { |
| 7539 | unsigned int rn = INSTR (9, 5); |
| 7540 | unsigned int st = INSTR (4, 0); |
| 7541 | |
| 7542 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7543 | aarch64_set_FP_float (cpu, st, aarch64_get_FP_float (cpu, rn)); |
| 7544 | } |
| 7545 | |
| 7546 | /* 64 bit fp to fp move register. */ |
| 7547 | static void |
| 7548 | ffmovd (sim_cpu *cpu) |
| 7549 | { |
| 7550 | unsigned int rn = INSTR (9, 5); |
| 7551 | unsigned int st = INSTR (4, 0); |
| 7552 | |
| 7553 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7554 | aarch64_set_FP_double (cpu, st, aarch64_get_FP_double (cpu, rn)); |
| 7555 | } |
| 7556 | |
| 7557 | /* 32 bit GReg to Vec move register. */ |
| 7558 | static void |
| 7559 | fgmovs (sim_cpu *cpu) |
| 7560 | { |
| 7561 | unsigned int rn = INSTR (9, 5); |
| 7562 | unsigned int st = INSTR (4, 0); |
| 7563 | |
| 7564 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7565 | aarch64_set_vec_u32 (cpu, st, 0, aarch64_get_reg_u32 (cpu, rn, NO_SP)); |
| 7566 | } |
| 7567 | |
| 7568 | /* 64 bit g to fp move register. */ |
| 7569 | static void |
| 7570 | fgmovd (sim_cpu *cpu) |
| 7571 | { |
| 7572 | unsigned int rn = INSTR (9, 5); |
| 7573 | unsigned int st = INSTR (4, 0); |
| 7574 | |
| 7575 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7576 | aarch64_set_vec_u64 (cpu, st, 0, aarch64_get_reg_u64 (cpu, rn, NO_SP)); |
| 7577 | } |
| 7578 | |
| 7579 | /* 32 bit fp to g move register. */ |
| 7580 | static void |
| 7581 | gfmovs (sim_cpu *cpu) |
| 7582 | { |
| 7583 | unsigned int rn = INSTR (9, 5); |
| 7584 | unsigned int st = INSTR (4, 0); |
| 7585 | |
| 7586 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7587 | aarch64_set_reg_u64 (cpu, st, NO_SP, aarch64_get_vec_u32 (cpu, rn, 0)); |
| 7588 | } |
| 7589 | |
| 7590 | /* 64 bit fp to g move register. */ |
| 7591 | static void |
| 7592 | gfmovd (sim_cpu *cpu) |
| 7593 | { |
| 7594 | unsigned int rn = INSTR (9, 5); |
| 7595 | unsigned int st = INSTR (4, 0); |
| 7596 | |
| 7597 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7598 | aarch64_set_reg_u64 (cpu, st, NO_SP, aarch64_get_vec_u64 (cpu, rn, 0)); |
| 7599 | } |
| 7600 | |
| 7601 | /* FP move immediate |
| 7602 | |
| 7603 | These install an immediate 8 bit value in the target register |
| 7604 | where the 8 bits comprise 1 sign bit, 4 bits of fraction and a 3 |
| 7605 | bit exponent. */ |
| 7606 | |
| 7607 | static void |
| 7608 | fmovs (sim_cpu *cpu) |
| 7609 | { |
| 7610 | unsigned int sd = INSTR (4, 0); |
| 7611 | uint32_t imm = INSTR (20, 13); |
| 7612 | float f = fp_immediate_for_encoding_32 (imm); |
| 7613 | |
| 7614 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7615 | aarch64_set_FP_float (cpu, sd, f); |
| 7616 | } |
| 7617 | |
| 7618 | static void |
| 7619 | fmovd (sim_cpu *cpu) |
| 7620 | { |
| 7621 | unsigned int sd = INSTR (4, 0); |
| 7622 | uint32_t imm = INSTR (20, 13); |
| 7623 | double d = fp_immediate_for_encoding_64 (imm); |
| 7624 | |
| 7625 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7626 | aarch64_set_FP_double (cpu, sd, d); |
| 7627 | } |
| 7628 | |
| 7629 | static void |
| 7630 | dexSimpleFPImmediate (sim_cpu *cpu) |
| 7631 | { |
| 7632 | /* instr[31,23] == 00111100 |
| 7633 | instr[22] == type : single(0)/double(1) |
| 7634 | instr[21] == 1 |
| 7635 | instr[20,13] == imm8 |
| 7636 | instr[12,10] == 100 |
| 7637 | instr[9,5] == imm5 : 00000 ==> PK, ow ==> UNALLOC |
| 7638 | instr[4,0] == Rd */ |
| 7639 | uint32_t imm5 = INSTR (9, 5); |
| 7640 | |
| 7641 | NYI_assert (31, 23, 0x3C); |
| 7642 | |
| 7643 | if (imm5 != 0) |
| 7644 | HALT_UNALLOC; |
| 7645 | |
| 7646 | if (INSTR (22, 22)) |
| 7647 | fmovd (cpu); |
| 7648 | else |
| 7649 | fmovs (cpu); |
| 7650 | } |
| 7651 | |
| 7652 | /* TODO specific decode and execute for group Load Store. */ |
| 7653 | |
| 7654 | /* TODO FP load/store single register (unscaled offset). */ |
| 7655 | |
| 7656 | /* TODO load 8 bit unscaled signed 9 bit. */ |
| 7657 | /* TODO load 16 bit unscaled signed 9 bit. */ |
| 7658 | |
| 7659 | /* Load 32 bit unscaled signed 9 bit. */ |
| 7660 | static void |
| 7661 | fldurs (sim_cpu *cpu, int32_t offset) |
| 7662 | { |
| 7663 | unsigned int rn = INSTR (9, 5); |
| 7664 | unsigned int st = INSTR (4, 0); |
| 7665 | |
| 7666 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7667 | aarch64_set_vec_u32 (cpu, st, 0, aarch64_get_mem_u32 |
| 7668 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset)); |
| 7669 | } |
| 7670 | |
| 7671 | /* Load 64 bit unscaled signed 9 bit. */ |
| 7672 | static void |
| 7673 | fldurd (sim_cpu *cpu, int32_t offset) |
| 7674 | { |
| 7675 | unsigned int rn = INSTR (9, 5); |
| 7676 | unsigned int st = INSTR (4, 0); |
| 7677 | |
| 7678 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7679 | aarch64_set_vec_u64 (cpu, st, 0, aarch64_get_mem_u64 |
| 7680 | (cpu, aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset)); |
| 7681 | } |
| 7682 | |
| 7683 | /* Load 128 bit unscaled signed 9 bit. */ |
| 7684 | static void |
| 7685 | fldurq (sim_cpu *cpu, int32_t offset) |
| 7686 | { |
| 7687 | unsigned int rn = INSTR (9, 5); |
| 7688 | unsigned int st = INSTR (4, 0); |
| 7689 | FRegister a; |
| 7690 | uint64_t addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset; |
| 7691 | |
| 7692 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7693 | aarch64_get_mem_long_double (cpu, addr, & a); |
| 7694 | aarch64_set_FP_long_double (cpu, st, a); |
| 7695 | } |
| 7696 | |
| 7697 | /* TODO store 8 bit unscaled signed 9 bit. */ |
| 7698 | /* TODO store 16 bit unscaled signed 9 bit. */ |
| 7699 | |
| 7700 | |
| 7701 | /* 1 source. */ |
| 7702 | |
| 7703 | /* Float absolute value. */ |
| 7704 | static void |
| 7705 | fabss (sim_cpu *cpu) |
| 7706 | { |
| 7707 | unsigned sn = INSTR (9, 5); |
| 7708 | unsigned sd = INSTR (4, 0); |
| 7709 | float value = aarch64_get_FP_float (cpu, sn); |
| 7710 | |
| 7711 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7712 | aarch64_set_FP_float (cpu, sd, fabsf (value)); |
| 7713 | } |
| 7714 | |
| 7715 | /* Double absolute value. */ |
| 7716 | static void |
| 7717 | fabcpu (sim_cpu *cpu) |
| 7718 | { |
| 7719 | unsigned sn = INSTR (9, 5); |
| 7720 | unsigned sd = INSTR (4, 0); |
| 7721 | double value = aarch64_get_FP_double (cpu, sn); |
| 7722 | |
| 7723 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7724 | aarch64_set_FP_double (cpu, sd, fabs (value)); |
| 7725 | } |
| 7726 | |
| 7727 | /* Float negative value. */ |
| 7728 | static void |
| 7729 | fnegs (sim_cpu *cpu) |
| 7730 | { |
| 7731 | unsigned sn = INSTR (9, 5); |
| 7732 | unsigned sd = INSTR (4, 0); |
| 7733 | |
| 7734 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7735 | aarch64_set_FP_float (cpu, sd, - aarch64_get_FP_float (cpu, sn)); |
| 7736 | } |
| 7737 | |
| 7738 | /* Double negative value. */ |
| 7739 | static void |
| 7740 | fnegd (sim_cpu *cpu) |
| 7741 | { |
| 7742 | unsigned sn = INSTR (9, 5); |
| 7743 | unsigned sd = INSTR (4, 0); |
| 7744 | |
| 7745 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7746 | aarch64_set_FP_double (cpu, sd, - aarch64_get_FP_double (cpu, sn)); |
| 7747 | } |
| 7748 | |
| 7749 | /* Float square root. */ |
| 7750 | static void |
| 7751 | fsqrts (sim_cpu *cpu) |
| 7752 | { |
| 7753 | unsigned sn = INSTR (9, 5); |
| 7754 | unsigned sd = INSTR (4, 0); |
| 7755 | |
| 7756 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7757 | aarch64_set_FP_float (cpu, sd, sqrt (aarch64_get_FP_float (cpu, sn))); |
| 7758 | } |
| 7759 | |
| 7760 | /* Double square root. */ |
| 7761 | static void |
| 7762 | fsqrtd (sim_cpu *cpu) |
| 7763 | { |
| 7764 | unsigned sn = INSTR (9, 5); |
| 7765 | unsigned sd = INSTR (4, 0); |
| 7766 | |
| 7767 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7768 | aarch64_set_FP_double (cpu, sd, |
| 7769 | sqrt (aarch64_get_FP_double (cpu, sn))); |
| 7770 | } |
| 7771 | |
| 7772 | /* Convert double to float. */ |
| 7773 | static void |
| 7774 | fcvtds (sim_cpu *cpu) |
| 7775 | { |
| 7776 | unsigned sn = INSTR (9, 5); |
| 7777 | unsigned sd = INSTR (4, 0); |
| 7778 | |
| 7779 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7780 | aarch64_set_FP_float (cpu, sd, (float) aarch64_get_FP_double (cpu, sn)); |
| 7781 | } |
| 7782 | |
| 7783 | /* Convert float to double. */ |
| 7784 | static void |
| 7785 | fcvtcpu (sim_cpu *cpu) |
| 7786 | { |
| 7787 | unsigned sn = INSTR (9, 5); |
| 7788 | unsigned sd = INSTR (4, 0); |
| 7789 | |
| 7790 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7791 | aarch64_set_FP_double (cpu, sd, (double) aarch64_get_FP_float (cpu, sn)); |
| 7792 | } |
| 7793 | |
| 7794 | static void |
| 7795 | do_FRINT (sim_cpu *cpu) |
| 7796 | { |
| 7797 | /* instr[31,23] = 0001 1110 0 |
| 7798 | instr[22] = single(0)/double(1) |
| 7799 | instr[21,18] = 1001 |
| 7800 | instr[17,15] = rounding mode |
| 7801 | instr[14,10] = 10000 |
| 7802 | instr[9,5] = source |
| 7803 | instr[4,0] = dest */ |
| 7804 | |
| 7805 | float val; |
| 7806 | unsigned rs = INSTR (9, 5); |
| 7807 | unsigned rd = INSTR (4, 0); |
| 7808 | unsigned int rmode = INSTR (17, 15); |
| 7809 | |
| 7810 | NYI_assert (31, 23, 0x03C); |
| 7811 | NYI_assert (21, 18, 0x9); |
| 7812 | NYI_assert (14, 10, 0x10); |
| 7813 | |
| 7814 | if (rmode == 6 || rmode == 7) |
| 7815 | /* FIXME: Add support for rmode == 6 exactness check. */ |
| 7816 | rmode = uimm (aarch64_get_FPSR (cpu), 23, 22); |
| 7817 | |
| 7818 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7819 | if (INSTR (22, 22)) |
| 7820 | { |
| 7821 | double val = aarch64_get_FP_double (cpu, rs); |
| 7822 | |
| 7823 | switch (rmode) |
| 7824 | { |
| 7825 | case 0: /* mode N: nearest or even. */ |
| 7826 | { |
| 7827 | double rval = round (val); |
| 7828 | |
| 7829 | if (val - rval == 0.5) |
| 7830 | { |
| 7831 | if (((rval / 2.0) * 2.0) != rval) |
| 7832 | rval += 1.0; |
| 7833 | } |
| 7834 | |
| 7835 | aarch64_set_FP_double (cpu, rd, round (val)); |
| 7836 | return; |
| 7837 | } |
| 7838 | |
| 7839 | case 1: /* mode P: towards +inf. */ |
| 7840 | if (val < 0.0) |
| 7841 | aarch64_set_FP_double (cpu, rd, trunc (val)); |
| 7842 | else |
| 7843 | aarch64_set_FP_double (cpu, rd, round (val)); |
| 7844 | return; |
| 7845 | |
| 7846 | case 2: /* mode M: towards -inf. */ |
| 7847 | if (val < 0.0) |
| 7848 | aarch64_set_FP_double (cpu, rd, round (val)); |
| 7849 | else |
| 7850 | aarch64_set_FP_double (cpu, rd, trunc (val)); |
| 7851 | return; |
| 7852 | |
| 7853 | case 3: /* mode Z: towards 0. */ |
| 7854 | aarch64_set_FP_double (cpu, rd, trunc (val)); |
| 7855 | return; |
| 7856 | |
| 7857 | case 4: /* mode A: away from 0. */ |
| 7858 | aarch64_set_FP_double (cpu, rd, round (val)); |
| 7859 | return; |
| 7860 | |
| 7861 | case 6: /* mode X: use FPCR with exactness check. */ |
| 7862 | case 7: /* mode I: use FPCR mode. */ |
| 7863 | HALT_NYI; |
| 7864 | |
| 7865 | default: |
| 7866 | HALT_UNALLOC; |
| 7867 | } |
| 7868 | } |
| 7869 | |
| 7870 | val = aarch64_get_FP_float (cpu, rs); |
| 7871 | |
| 7872 | switch (rmode) |
| 7873 | { |
| 7874 | case 0: /* mode N: nearest or even. */ |
| 7875 | { |
| 7876 | float rval = roundf (val); |
| 7877 | |
| 7878 | if (val - rval == 0.5) |
| 7879 | { |
| 7880 | if (((rval / 2.0) * 2.0) != rval) |
| 7881 | rval += 1.0; |
| 7882 | } |
| 7883 | |
| 7884 | aarch64_set_FP_float (cpu, rd, rval); |
| 7885 | return; |
| 7886 | } |
| 7887 | |
| 7888 | case 1: /* mode P: towards +inf. */ |
| 7889 | if (val < 0.0) |
| 7890 | aarch64_set_FP_float (cpu, rd, truncf (val)); |
| 7891 | else |
| 7892 | aarch64_set_FP_float (cpu, rd, roundf (val)); |
| 7893 | return; |
| 7894 | |
| 7895 | case 2: /* mode M: towards -inf. */ |
| 7896 | if (val < 0.0) |
| 7897 | aarch64_set_FP_float (cpu, rd, truncf (val)); |
| 7898 | else |
| 7899 | aarch64_set_FP_float (cpu, rd, roundf (val)); |
| 7900 | return; |
| 7901 | |
| 7902 | case 3: /* mode Z: towards 0. */ |
| 7903 | aarch64_set_FP_float (cpu, rd, truncf (val)); |
| 7904 | return; |
| 7905 | |
| 7906 | case 4: /* mode A: away from 0. */ |
| 7907 | aarch64_set_FP_float (cpu, rd, roundf (val)); |
| 7908 | return; |
| 7909 | |
| 7910 | case 6: /* mode X: use FPCR with exactness check. */ |
| 7911 | case 7: /* mode I: use FPCR mode. */ |
| 7912 | HALT_NYI; |
| 7913 | |
| 7914 | default: |
| 7915 | HALT_UNALLOC; |
| 7916 | } |
| 7917 | } |
| 7918 | |
| 7919 | /* Convert half to float. */ |
| 7920 | static void |
| 7921 | do_FCVT_half_to_single (sim_cpu *cpu) |
| 7922 | { |
| 7923 | unsigned rn = INSTR (9, 5); |
| 7924 | unsigned rd = INSTR (4, 0); |
| 7925 | |
| 7926 | NYI_assert (31, 10, 0x7B890); |
| 7927 | |
| 7928 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7929 | aarch64_set_FP_float (cpu, rd, (float) aarch64_get_FP_half (cpu, rn)); |
| 7930 | } |
| 7931 | |
| 7932 | /* Convert half to double. */ |
| 7933 | static void |
| 7934 | do_FCVT_half_to_double (sim_cpu *cpu) |
| 7935 | { |
| 7936 | unsigned rn = INSTR (9, 5); |
| 7937 | unsigned rd = INSTR (4, 0); |
| 7938 | |
| 7939 | NYI_assert (31, 10, 0x7B8B0); |
| 7940 | |
| 7941 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7942 | aarch64_set_FP_double (cpu, rd, (double) aarch64_get_FP_half (cpu, rn)); |
| 7943 | } |
| 7944 | |
| 7945 | static void |
| 7946 | do_FCVT_single_to_half (sim_cpu *cpu) |
| 7947 | { |
| 7948 | unsigned rn = INSTR (9, 5); |
| 7949 | unsigned rd = INSTR (4, 0); |
| 7950 | |
| 7951 | NYI_assert (31, 10, 0x788F0); |
| 7952 | |
| 7953 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7954 | aarch64_set_FP_half (cpu, rd, aarch64_get_FP_float (cpu, rn)); |
| 7955 | } |
| 7956 | |
| 7957 | /* Convert double to half. */ |
| 7958 | static void |
| 7959 | do_FCVT_double_to_half (sim_cpu *cpu) |
| 7960 | { |
| 7961 | unsigned rn = INSTR (9, 5); |
| 7962 | unsigned rd = INSTR (4, 0); |
| 7963 | |
| 7964 | NYI_assert (31, 10, 0x798F0); |
| 7965 | |
| 7966 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 7967 | aarch64_set_FP_half (cpu, rd, (float) aarch64_get_FP_double (cpu, rn)); |
| 7968 | } |
| 7969 | |
| 7970 | static void |
| 7971 | dexSimpleFPDataProc1Source (sim_cpu *cpu) |
| 7972 | { |
| 7973 | /* instr[31] ==> M : 0 ==> OK, 1 ==> UNALLOC |
| 7974 | instr[30] = 0 |
| 7975 | instr[29] ==> S : 0 ==> OK, 1 ==> UNALLOC |
| 7976 | instr[28,25] = 1111 |
| 7977 | instr[24] = 0 |
| 7978 | instr[23,22] ==> type : 00 ==> source is single, |
| 7979 | 01 ==> source is double |
| 7980 | 10 ==> UNALLOC |
| 7981 | 11 ==> UNALLOC or source is half |
| 7982 | instr[21] = 1 |
| 7983 | instr[20,15] ==> opcode : with type 00 or 01 |
| 7984 | 000000 ==> FMOV, 000001 ==> FABS, |
| 7985 | 000010 ==> FNEG, 000011 ==> FSQRT, |
| 7986 | 000100 ==> UNALLOC, 000101 ==> FCVT,(to single/double) |
| 7987 | 000110 ==> UNALLOC, 000111 ==> FCVT (to half) |
| 7988 | 001000 ==> FRINTN, 001001 ==> FRINTP, |
| 7989 | 001010 ==> FRINTM, 001011 ==> FRINTZ, |
| 7990 | 001100 ==> FRINTA, 001101 ==> UNALLOC |
| 7991 | 001110 ==> FRINTX, 001111 ==> FRINTI |
| 7992 | with type 11 |
| 7993 | 000100 ==> FCVT (half-to-single) |
| 7994 | 000101 ==> FCVT (half-to-double) |
| 7995 | instr[14,10] = 10000. */ |
| 7996 | |
| 7997 | uint32_t M_S = (INSTR (31, 31) << 1) | INSTR (29, 29); |
| 7998 | uint32_t type = INSTR (23, 22); |
| 7999 | uint32_t opcode = INSTR (20, 15); |
| 8000 | |
| 8001 | if (M_S != 0) |
| 8002 | HALT_UNALLOC; |
| 8003 | |
| 8004 | if (type == 3) |
| 8005 | { |
| 8006 | if (opcode == 4) |
| 8007 | do_FCVT_half_to_single (cpu); |
| 8008 | else if (opcode == 5) |
| 8009 | do_FCVT_half_to_double (cpu); |
| 8010 | else |
| 8011 | HALT_UNALLOC; |
| 8012 | return; |
| 8013 | } |
| 8014 | |
| 8015 | if (type == 2) |
| 8016 | HALT_UNALLOC; |
| 8017 | |
| 8018 | switch (opcode) |
| 8019 | { |
| 8020 | case 0: |
| 8021 | if (type) |
| 8022 | ffmovd (cpu); |
| 8023 | else |
| 8024 | ffmovs (cpu); |
| 8025 | return; |
| 8026 | |
| 8027 | case 1: |
| 8028 | if (type) |
| 8029 | fabcpu (cpu); |
| 8030 | else |
| 8031 | fabss (cpu); |
| 8032 | return; |
| 8033 | |
| 8034 | case 2: |
| 8035 | if (type) |
| 8036 | fnegd (cpu); |
| 8037 | else |
| 8038 | fnegs (cpu); |
| 8039 | return; |
| 8040 | |
| 8041 | case 3: |
| 8042 | if (type) |
| 8043 | fsqrtd (cpu); |
| 8044 | else |
| 8045 | fsqrts (cpu); |
| 8046 | return; |
| 8047 | |
| 8048 | case 4: |
| 8049 | if (type) |
| 8050 | fcvtds (cpu); |
| 8051 | else |
| 8052 | HALT_UNALLOC; |
| 8053 | return; |
| 8054 | |
| 8055 | case 5: |
| 8056 | if (type) |
| 8057 | HALT_UNALLOC; |
| 8058 | fcvtcpu (cpu); |
| 8059 | return; |
| 8060 | |
| 8061 | case 8: /* FRINTN etc. */ |
| 8062 | case 9: |
| 8063 | case 10: |
| 8064 | case 11: |
| 8065 | case 12: |
| 8066 | case 14: |
| 8067 | case 15: |
| 8068 | do_FRINT (cpu); |
| 8069 | return; |
| 8070 | |
| 8071 | case 7: |
| 8072 | if (INSTR (22, 22)) |
| 8073 | do_FCVT_double_to_half (cpu); |
| 8074 | else |
| 8075 | do_FCVT_single_to_half (cpu); |
| 8076 | return; |
| 8077 | |
| 8078 | case 13: |
| 8079 | HALT_NYI; |
| 8080 | |
| 8081 | default: |
| 8082 | HALT_UNALLOC; |
| 8083 | } |
| 8084 | } |
| 8085 | |
| 8086 | /* 32 bit signed int to float. */ |
| 8087 | static void |
| 8088 | scvtf32 (sim_cpu *cpu) |
| 8089 | { |
| 8090 | unsigned rn = INSTR (9, 5); |
| 8091 | unsigned sd = INSTR (4, 0); |
| 8092 | |
| 8093 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8094 | aarch64_set_FP_float |
| 8095 | (cpu, sd, (float) aarch64_get_reg_s32 (cpu, rn, NO_SP)); |
| 8096 | } |
| 8097 | |
| 8098 | /* signed int to float. */ |
| 8099 | static void |
| 8100 | scvtf (sim_cpu *cpu) |
| 8101 | { |
| 8102 | unsigned rn = INSTR (9, 5); |
| 8103 | unsigned sd = INSTR (4, 0); |
| 8104 | |
| 8105 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8106 | aarch64_set_FP_float |
| 8107 | (cpu, sd, (float) aarch64_get_reg_s64 (cpu, rn, NO_SP)); |
| 8108 | } |
| 8109 | |
| 8110 | /* 32 bit signed int to double. */ |
| 8111 | static void |
| 8112 | scvtd32 (sim_cpu *cpu) |
| 8113 | { |
| 8114 | unsigned rn = INSTR (9, 5); |
| 8115 | unsigned sd = INSTR (4, 0); |
| 8116 | |
| 8117 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8118 | aarch64_set_FP_double |
| 8119 | (cpu, sd, (double) aarch64_get_reg_s32 (cpu, rn, NO_SP)); |
| 8120 | } |
| 8121 | |
| 8122 | /* signed int to double. */ |
| 8123 | static void |
| 8124 | scvtd (sim_cpu *cpu) |
| 8125 | { |
| 8126 | unsigned rn = INSTR (9, 5); |
| 8127 | unsigned sd = INSTR (4, 0); |
| 8128 | |
| 8129 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8130 | aarch64_set_FP_double |
| 8131 | (cpu, sd, (double) aarch64_get_reg_s64 (cpu, rn, NO_SP)); |
| 8132 | } |
| 8133 | |
| 8134 | static const float FLOAT_INT_MAX = (float) INT_MAX; |
| 8135 | static const float FLOAT_INT_MIN = (float) INT_MIN; |
| 8136 | static const double DOUBLE_INT_MAX = (double) INT_MAX; |
| 8137 | static const double DOUBLE_INT_MIN = (double) INT_MIN; |
| 8138 | static const float FLOAT_LONG_MAX = (float) LONG_MAX; |
| 8139 | static const float FLOAT_LONG_MIN = (float) LONG_MIN; |
| 8140 | static const double DOUBLE_LONG_MAX = (double) LONG_MAX; |
| 8141 | static const double DOUBLE_LONG_MIN = (double) LONG_MIN; |
| 8142 | |
| 8143 | /* Check for FP exception conditions: |
| 8144 | NaN raises IO |
| 8145 | Infinity raises IO |
| 8146 | Out of Range raises IO and IX and saturates value |
| 8147 | Denormal raises ID and IX and sets to zero. */ |
| 8148 | #define RAISE_EXCEPTIONS(F, VALUE, FTYPE, ITYPE) \ |
| 8149 | do \ |
| 8150 | { \ |
| 8151 | switch (fpclassify (F)) \ |
| 8152 | { \ |
| 8153 | case FP_INFINITE: \ |
| 8154 | case FP_NAN: \ |
| 8155 | aarch64_set_FPSR (cpu, IO); \ |
| 8156 | if (signbit (F)) \ |
| 8157 | VALUE = ITYPE##_MAX; \ |
| 8158 | else \ |
| 8159 | VALUE = ITYPE##_MIN; \ |
| 8160 | break; \ |
| 8161 | \ |
| 8162 | case FP_NORMAL: \ |
| 8163 | if (F >= FTYPE##_##ITYPE##_MAX) \ |
| 8164 | { \ |
| 8165 | aarch64_set_FPSR_bits (cpu, IO | IX, IO | IX); \ |
| 8166 | VALUE = ITYPE##_MAX; \ |
| 8167 | } \ |
| 8168 | else if (F <= FTYPE##_##ITYPE##_MIN) \ |
| 8169 | { \ |
| 8170 | aarch64_set_FPSR_bits (cpu, IO | IX, IO | IX); \ |
| 8171 | VALUE = ITYPE##_MIN; \ |
| 8172 | } \ |
| 8173 | break; \ |
| 8174 | \ |
| 8175 | case FP_SUBNORMAL: \ |
| 8176 | aarch64_set_FPSR_bits (cpu, IO | IX | ID, IX | ID); \ |
| 8177 | VALUE = 0; \ |
| 8178 | break; \ |
| 8179 | \ |
| 8180 | default: \ |
| 8181 | case FP_ZERO: \ |
| 8182 | VALUE = 0; \ |
| 8183 | break; \ |
| 8184 | } \ |
| 8185 | } \ |
| 8186 | while (0) |
| 8187 | |
| 8188 | /* 32 bit convert float to signed int truncate towards zero. */ |
| 8189 | static void |
| 8190 | fcvtszs32 (sim_cpu *cpu) |
| 8191 | { |
| 8192 | unsigned sn = INSTR (9, 5); |
| 8193 | unsigned rd = INSTR (4, 0); |
| 8194 | /* TODO : check that this rounds toward zero. */ |
| 8195 | float f = aarch64_get_FP_float (cpu, sn); |
| 8196 | int32_t value = (int32_t) f; |
| 8197 | |
| 8198 | RAISE_EXCEPTIONS (f, value, FLOAT, INT); |
| 8199 | |
| 8200 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8201 | /* Avoid sign extension to 64 bit. */ |
| 8202 | aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) value); |
| 8203 | } |
| 8204 | |
| 8205 | /* 64 bit convert float to signed int truncate towards zero. */ |
| 8206 | static void |
| 8207 | fcvtszs (sim_cpu *cpu) |
| 8208 | { |
| 8209 | unsigned sn = INSTR (9, 5); |
| 8210 | unsigned rd = INSTR (4, 0); |
| 8211 | float f = aarch64_get_FP_float (cpu, sn); |
| 8212 | int64_t value = (int64_t) f; |
| 8213 | |
| 8214 | RAISE_EXCEPTIONS (f, value, FLOAT, LONG); |
| 8215 | |
| 8216 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8217 | aarch64_set_reg_s64 (cpu, rd, NO_SP, value); |
| 8218 | } |
| 8219 | |
| 8220 | /* 32 bit convert double to signed int truncate towards zero. */ |
| 8221 | static void |
| 8222 | fcvtszd32 (sim_cpu *cpu) |
| 8223 | { |
| 8224 | unsigned sn = INSTR (9, 5); |
| 8225 | unsigned rd = INSTR (4, 0); |
| 8226 | /* TODO : check that this rounds toward zero. */ |
| 8227 | double d = aarch64_get_FP_double (cpu, sn); |
| 8228 | int32_t value = (int32_t) d; |
| 8229 | |
| 8230 | RAISE_EXCEPTIONS (d, value, DOUBLE, INT); |
| 8231 | |
| 8232 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8233 | /* Avoid sign extension to 64 bit. */ |
| 8234 | aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) value); |
| 8235 | } |
| 8236 | |
| 8237 | /* 64 bit convert double to signed int truncate towards zero. */ |
| 8238 | static void |
| 8239 | fcvtszd (sim_cpu *cpu) |
| 8240 | { |
| 8241 | unsigned sn = INSTR (9, 5); |
| 8242 | unsigned rd = INSTR (4, 0); |
| 8243 | /* TODO : check that this rounds toward zero. */ |
| 8244 | double d = aarch64_get_FP_double (cpu, sn); |
| 8245 | int64_t value; |
| 8246 | |
| 8247 | value = (int64_t) d; |
| 8248 | |
| 8249 | RAISE_EXCEPTIONS (d, value, DOUBLE, LONG); |
| 8250 | |
| 8251 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8252 | aarch64_set_reg_s64 (cpu, rd, NO_SP, value); |
| 8253 | } |
| 8254 | |
| 8255 | static void |
| 8256 | do_fcvtzu (sim_cpu *cpu) |
| 8257 | { |
| 8258 | /* instr[31] = size: 32-bit (0), 64-bit (1) |
| 8259 | instr[30,23] = 00111100 |
| 8260 | instr[22] = type: single (0)/ double (1) |
| 8261 | instr[21] = enable (0)/disable(1) precision |
| 8262 | instr[20,16] = 11001 |
| 8263 | instr[15,10] = precision |
| 8264 | instr[9,5] = Rs |
| 8265 | instr[4,0] = Rd. */ |
| 8266 | |
| 8267 | unsigned rs = INSTR (9, 5); |
| 8268 | unsigned rd = INSTR (4, 0); |
| 8269 | |
| 8270 | NYI_assert (30, 23, 0x3C); |
| 8271 | NYI_assert (20, 16, 0x19); |
| 8272 | |
| 8273 | if (INSTR (21, 21) != 1) |
| 8274 | /* Convert to fixed point. */ |
| 8275 | HALT_NYI; |
| 8276 | |
| 8277 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8278 | if (INSTR (31, 31)) |
| 8279 | { |
| 8280 | /* Convert to unsigned 64-bit integer. */ |
| 8281 | if (INSTR (22, 22)) |
| 8282 | { |
| 8283 | double d = aarch64_get_FP_double (cpu, rs); |
| 8284 | uint64_t value = (uint64_t) d; |
| 8285 | |
| 8286 | /* Do not raise an exception if we have reached ULONG_MAX. */ |
| 8287 | if (value != (1UL << 63)) |
| 8288 | RAISE_EXCEPTIONS (d, value, DOUBLE, LONG); |
| 8289 | |
| 8290 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value); |
| 8291 | } |
| 8292 | else |
| 8293 | { |
| 8294 | float f = aarch64_get_FP_float (cpu, rs); |
| 8295 | uint64_t value = (uint64_t) f; |
| 8296 | |
| 8297 | /* Do not raise an exception if we have reached ULONG_MAX. */ |
| 8298 | if (value != (1UL << 63)) |
| 8299 | RAISE_EXCEPTIONS (f, value, FLOAT, LONG); |
| 8300 | |
| 8301 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value); |
| 8302 | } |
| 8303 | } |
| 8304 | else |
| 8305 | { |
| 8306 | uint32_t value; |
| 8307 | |
| 8308 | /* Convert to unsigned 32-bit integer. */ |
| 8309 | if (INSTR (22, 22)) |
| 8310 | { |
| 8311 | double d = aarch64_get_FP_double (cpu, rs); |
| 8312 | |
| 8313 | value = (uint32_t) d; |
| 8314 | /* Do not raise an exception if we have reached UINT_MAX. */ |
| 8315 | if (value != (1UL << 31)) |
| 8316 | RAISE_EXCEPTIONS (d, value, DOUBLE, INT); |
| 8317 | } |
| 8318 | else |
| 8319 | { |
| 8320 | float f = aarch64_get_FP_float (cpu, rs); |
| 8321 | |
| 8322 | value = (uint32_t) f; |
| 8323 | /* Do not raise an exception if we have reached UINT_MAX. */ |
| 8324 | if (value != (1UL << 31)) |
| 8325 | RAISE_EXCEPTIONS (f, value, FLOAT, INT); |
| 8326 | } |
| 8327 | |
| 8328 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value); |
| 8329 | } |
| 8330 | } |
| 8331 | |
| 8332 | static void |
| 8333 | do_UCVTF (sim_cpu *cpu) |
| 8334 | { |
| 8335 | /* instr[31] = size: 32-bit (0), 64-bit (1) |
| 8336 | instr[30,23] = 001 1110 0 |
| 8337 | instr[22] = type: single (0)/ double (1) |
| 8338 | instr[21] = enable (0)/disable(1) precision |
| 8339 | instr[20,16] = 0 0011 |
| 8340 | instr[15,10] = precision |
| 8341 | instr[9,5] = Rs |
| 8342 | instr[4,0] = Rd. */ |
| 8343 | |
| 8344 | unsigned rs = INSTR (9, 5); |
| 8345 | unsigned rd = INSTR (4, 0); |
| 8346 | |
| 8347 | NYI_assert (30, 23, 0x3C); |
| 8348 | NYI_assert (20, 16, 0x03); |
| 8349 | |
| 8350 | if (INSTR (21, 21) != 1) |
| 8351 | HALT_NYI; |
| 8352 | |
| 8353 | /* FIXME: Add exception raising. */ |
| 8354 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8355 | if (INSTR (31, 31)) |
| 8356 | { |
| 8357 | uint64_t value = aarch64_get_reg_u64 (cpu, rs, NO_SP); |
| 8358 | |
| 8359 | if (INSTR (22, 22)) |
| 8360 | aarch64_set_FP_double (cpu, rd, (double) value); |
| 8361 | else |
| 8362 | aarch64_set_FP_float (cpu, rd, (float) value); |
| 8363 | } |
| 8364 | else |
| 8365 | { |
| 8366 | uint32_t value = aarch64_get_reg_u32 (cpu, rs, NO_SP); |
| 8367 | |
| 8368 | if (INSTR (22, 22)) |
| 8369 | aarch64_set_FP_double (cpu, rd, (double) value); |
| 8370 | else |
| 8371 | aarch64_set_FP_float (cpu, rd, (float) value); |
| 8372 | } |
| 8373 | } |
| 8374 | |
| 8375 | static void |
| 8376 | float_vector_move (sim_cpu *cpu) |
| 8377 | { |
| 8378 | /* instr[31,17] == 100 1111 0101 0111 |
| 8379 | instr[16] ==> direction 0=> to GR, 1=> from GR |
| 8380 | instr[15,10] => ??? |
| 8381 | instr[9,5] ==> source |
| 8382 | instr[4,0] ==> dest. */ |
| 8383 | |
| 8384 | unsigned rn = INSTR (9, 5); |
| 8385 | unsigned rd = INSTR (4, 0); |
| 8386 | |
| 8387 | NYI_assert (31, 17, 0x4F57); |
| 8388 | |
| 8389 | if (INSTR (15, 10) != 0) |
| 8390 | HALT_UNALLOC; |
| 8391 | |
| 8392 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8393 | if (INSTR (16, 16)) |
| 8394 | aarch64_set_vec_u64 (cpu, rd, 1, aarch64_get_reg_u64 (cpu, rn, NO_SP)); |
| 8395 | else |
| 8396 | aarch64_set_reg_u64 (cpu, rd, NO_SP, aarch64_get_vec_u64 (cpu, rn, 1)); |
| 8397 | } |
| 8398 | |
| 8399 | static void |
| 8400 | dexSimpleFPIntegerConvert (sim_cpu *cpu) |
| 8401 | { |
| 8402 | /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 8403 | instr[30 = 0 |
| 8404 | instr[29] = S : 0 ==> OK, 1 ==> UNALLOC |
| 8405 | instr[28,25] = 1111 |
| 8406 | instr[24] = 0 |
| 8407 | instr[23,22] = type : 00 ==> single, 01 ==> double, 1x ==> UNALLOC |
| 8408 | instr[21] = 1 |
| 8409 | instr[20,19] = rmode |
| 8410 | instr[18,16] = opcode |
| 8411 | instr[15,10] = 10 0000 */ |
| 8412 | |
| 8413 | uint32_t rmode_opcode; |
| 8414 | uint32_t size_type; |
| 8415 | uint32_t type; |
| 8416 | uint32_t size; |
| 8417 | uint32_t S; |
| 8418 | |
| 8419 | if (INSTR (31, 17) == 0x4F57) |
| 8420 | { |
| 8421 | float_vector_move (cpu); |
| 8422 | return; |
| 8423 | } |
| 8424 | |
| 8425 | size = INSTR (31, 31); |
| 8426 | S = INSTR (29, 29); |
| 8427 | if (S != 0) |
| 8428 | HALT_UNALLOC; |
| 8429 | |
| 8430 | type = INSTR (23, 22); |
| 8431 | if (type > 1) |
| 8432 | HALT_UNALLOC; |
| 8433 | |
| 8434 | rmode_opcode = INSTR (20, 16); |
| 8435 | size_type = (size << 1) | type; /* 0==32f, 1==32d, 2==64f, 3==64d. */ |
| 8436 | |
| 8437 | switch (rmode_opcode) |
| 8438 | { |
| 8439 | case 2: /* SCVTF. */ |
| 8440 | switch (size_type) |
| 8441 | { |
| 8442 | case 0: scvtf32 (cpu); return; |
| 8443 | case 1: scvtd32 (cpu); return; |
| 8444 | case 2: scvtf (cpu); return; |
| 8445 | case 3: scvtd (cpu); return; |
| 8446 | } |
| 8447 | |
| 8448 | case 6: /* FMOV GR, Vec. */ |
| 8449 | switch (size_type) |
| 8450 | { |
| 8451 | case 0: gfmovs (cpu); return; |
| 8452 | case 3: gfmovd (cpu); return; |
| 8453 | default: HALT_UNALLOC; |
| 8454 | } |
| 8455 | |
| 8456 | case 7: /* FMOV vec, GR. */ |
| 8457 | switch (size_type) |
| 8458 | { |
| 8459 | case 0: fgmovs (cpu); return; |
| 8460 | case 3: fgmovd (cpu); return; |
| 8461 | default: HALT_UNALLOC; |
| 8462 | } |
| 8463 | |
| 8464 | case 24: /* FCVTZS. */ |
| 8465 | switch (size_type) |
| 8466 | { |
| 8467 | case 0: fcvtszs32 (cpu); return; |
| 8468 | case 1: fcvtszd32 (cpu); return; |
| 8469 | case 2: fcvtszs (cpu); return; |
| 8470 | case 3: fcvtszd (cpu); return; |
| 8471 | } |
| 8472 | |
| 8473 | case 25: do_fcvtzu (cpu); return; |
| 8474 | case 3: do_UCVTF (cpu); return; |
| 8475 | |
| 8476 | case 0: /* FCVTNS. */ |
| 8477 | case 1: /* FCVTNU. */ |
| 8478 | case 4: /* FCVTAS. */ |
| 8479 | case 5: /* FCVTAU. */ |
| 8480 | case 8: /* FCVPTS. */ |
| 8481 | case 9: /* FCVTPU. */ |
| 8482 | case 16: /* FCVTMS. */ |
| 8483 | case 17: /* FCVTMU. */ |
| 8484 | default: |
| 8485 | HALT_NYI; |
| 8486 | } |
| 8487 | } |
| 8488 | |
| 8489 | static void |
| 8490 | set_flags_for_float_compare (sim_cpu *cpu, float fvalue1, float fvalue2) |
| 8491 | { |
| 8492 | uint32_t flags; |
| 8493 | |
| 8494 | if (isnan (fvalue1) || isnan (fvalue2)) |
| 8495 | flags = C|V; |
| 8496 | else |
| 8497 | { |
| 8498 | float result = fvalue1 - fvalue2; |
| 8499 | |
| 8500 | if (result == 0.0) |
| 8501 | flags = Z|C; |
| 8502 | else if (result < 0) |
| 8503 | flags = N; |
| 8504 | else /* (result > 0). */ |
| 8505 | flags = C; |
| 8506 | } |
| 8507 | |
| 8508 | aarch64_set_CPSR (cpu, flags); |
| 8509 | } |
| 8510 | |
| 8511 | static void |
| 8512 | fcmps (sim_cpu *cpu) |
| 8513 | { |
| 8514 | unsigned sm = INSTR (20, 16); |
| 8515 | unsigned sn = INSTR ( 9, 5); |
| 8516 | |
| 8517 | float fvalue1 = aarch64_get_FP_float (cpu, sn); |
| 8518 | float fvalue2 = aarch64_get_FP_float (cpu, sm); |
| 8519 | |
| 8520 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8521 | set_flags_for_float_compare (cpu, fvalue1, fvalue2); |
| 8522 | } |
| 8523 | |
| 8524 | /* Float compare to zero -- Invalid Operation exception |
| 8525 | only on signaling NaNs. */ |
| 8526 | static void |
| 8527 | fcmpzs (sim_cpu *cpu) |
| 8528 | { |
| 8529 | unsigned sn = INSTR ( 9, 5); |
| 8530 | float fvalue1 = aarch64_get_FP_float (cpu, sn); |
| 8531 | |
| 8532 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8533 | set_flags_for_float_compare (cpu, fvalue1, 0.0f); |
| 8534 | } |
| 8535 | |
| 8536 | /* Float compare -- Invalid Operation exception on all NaNs. */ |
| 8537 | static void |
| 8538 | fcmpes (sim_cpu *cpu) |
| 8539 | { |
| 8540 | unsigned sm = INSTR (20, 16); |
| 8541 | unsigned sn = INSTR ( 9, 5); |
| 8542 | |
| 8543 | float fvalue1 = aarch64_get_FP_float (cpu, sn); |
| 8544 | float fvalue2 = aarch64_get_FP_float (cpu, sm); |
| 8545 | |
| 8546 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8547 | set_flags_for_float_compare (cpu, fvalue1, fvalue2); |
| 8548 | } |
| 8549 | |
| 8550 | /* Float compare to zero -- Invalid Operation exception on all NaNs. */ |
| 8551 | static void |
| 8552 | fcmpzes (sim_cpu *cpu) |
| 8553 | { |
| 8554 | unsigned sn = INSTR ( 9, 5); |
| 8555 | float fvalue1 = aarch64_get_FP_float (cpu, sn); |
| 8556 | |
| 8557 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8558 | set_flags_for_float_compare (cpu, fvalue1, 0.0f); |
| 8559 | } |
| 8560 | |
| 8561 | static void |
| 8562 | set_flags_for_double_compare (sim_cpu *cpu, double dval1, double dval2) |
| 8563 | { |
| 8564 | uint32_t flags; |
| 8565 | |
| 8566 | if (isnan (dval1) || isnan (dval2)) |
| 8567 | flags = C|V; |
| 8568 | else |
| 8569 | { |
| 8570 | double result = dval1 - dval2; |
| 8571 | |
| 8572 | if (result == 0.0) |
| 8573 | flags = Z|C; |
| 8574 | else if (result < 0) |
| 8575 | flags = N; |
| 8576 | else /* (result > 0). */ |
| 8577 | flags = C; |
| 8578 | } |
| 8579 | |
| 8580 | aarch64_set_CPSR (cpu, flags); |
| 8581 | } |
| 8582 | |
| 8583 | /* Double compare -- Invalid Operation exception only on signaling NaNs. */ |
| 8584 | static void |
| 8585 | fcmpd (sim_cpu *cpu) |
| 8586 | { |
| 8587 | unsigned sm = INSTR (20, 16); |
| 8588 | unsigned sn = INSTR ( 9, 5); |
| 8589 | |
| 8590 | double dvalue1 = aarch64_get_FP_double (cpu, sn); |
| 8591 | double dvalue2 = aarch64_get_FP_double (cpu, sm); |
| 8592 | |
| 8593 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8594 | set_flags_for_double_compare (cpu, dvalue1, dvalue2); |
| 8595 | } |
| 8596 | |
| 8597 | /* Double compare to zero -- Invalid Operation exception |
| 8598 | only on signaling NaNs. */ |
| 8599 | static void |
| 8600 | fcmpzd (sim_cpu *cpu) |
| 8601 | { |
| 8602 | unsigned sn = INSTR ( 9, 5); |
| 8603 | double dvalue1 = aarch64_get_FP_double (cpu, sn); |
| 8604 | |
| 8605 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8606 | set_flags_for_double_compare (cpu, dvalue1, 0.0); |
| 8607 | } |
| 8608 | |
| 8609 | /* Double compare -- Invalid Operation exception on all NaNs. */ |
| 8610 | static void |
| 8611 | fcmped (sim_cpu *cpu) |
| 8612 | { |
| 8613 | unsigned sm = INSTR (20, 16); |
| 8614 | unsigned sn = INSTR ( 9, 5); |
| 8615 | |
| 8616 | double dvalue1 = aarch64_get_FP_double (cpu, sn); |
| 8617 | double dvalue2 = aarch64_get_FP_double (cpu, sm); |
| 8618 | |
| 8619 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8620 | set_flags_for_double_compare (cpu, dvalue1, dvalue2); |
| 8621 | } |
| 8622 | |
| 8623 | /* Double compare to zero -- Invalid Operation exception on all NaNs. */ |
| 8624 | static void |
| 8625 | fcmpzed (sim_cpu *cpu) |
| 8626 | { |
| 8627 | unsigned sn = INSTR ( 9, 5); |
| 8628 | double dvalue1 = aarch64_get_FP_double (cpu, sn); |
| 8629 | |
| 8630 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8631 | set_flags_for_double_compare (cpu, dvalue1, 0.0); |
| 8632 | } |
| 8633 | |
| 8634 | static void |
| 8635 | dexSimpleFPCompare (sim_cpu *cpu) |
| 8636 | { |
| 8637 | /* assert instr[28,25] == 1111 |
| 8638 | instr[30:24:21:13,10] = 0011000 |
| 8639 | instr[31] = M : 0 ==> OK, 1 ==> UNALLOC |
| 8640 | instr[29] ==> S : 0 ==> OK, 1 ==> UNALLOC |
| 8641 | instr[23,22] ==> type : 0 ==> single, 01 ==> double, 1x ==> UNALLOC |
| 8642 | instr[15,14] ==> op : 00 ==> OK, ow ==> UNALLOC |
| 8643 | instr[4,0] ==> opcode2 : 00000 ==> FCMP, 10000 ==> FCMPE, |
| 8644 | 01000 ==> FCMPZ, 11000 ==> FCMPEZ, |
| 8645 | ow ==> UNALLOC */ |
| 8646 | uint32_t dispatch; |
| 8647 | uint32_t M_S = (INSTR (31, 31) << 1) | INSTR (29, 29); |
| 8648 | uint32_t type = INSTR (23, 22); |
| 8649 | uint32_t op = INSTR (15, 14); |
| 8650 | uint32_t op2_2_0 = INSTR (2, 0); |
| 8651 | |
| 8652 | if (op2_2_0 != 0) |
| 8653 | HALT_UNALLOC; |
| 8654 | |
| 8655 | if (M_S != 0) |
| 8656 | HALT_UNALLOC; |
| 8657 | |
| 8658 | if (type > 1) |
| 8659 | HALT_UNALLOC; |
| 8660 | |
| 8661 | if (op != 0) |
| 8662 | HALT_UNALLOC; |
| 8663 | |
| 8664 | /* dispatch on type and top 2 bits of opcode. */ |
| 8665 | dispatch = (type << 2) | INSTR (4, 3); |
| 8666 | |
| 8667 | switch (dispatch) |
| 8668 | { |
| 8669 | case 0: fcmps (cpu); return; |
| 8670 | case 1: fcmpzs (cpu); return; |
| 8671 | case 2: fcmpes (cpu); return; |
| 8672 | case 3: fcmpzes (cpu); return; |
| 8673 | case 4: fcmpd (cpu); return; |
| 8674 | case 5: fcmpzd (cpu); return; |
| 8675 | case 6: fcmped (cpu); return; |
| 8676 | case 7: fcmpzed (cpu); return; |
| 8677 | } |
| 8678 | } |
| 8679 | |
| 8680 | static void |
| 8681 | do_scalar_FADDP (sim_cpu *cpu) |
| 8682 | { |
| 8683 | /* instr [31,23] = 0111 1110 0 |
| 8684 | instr [22] = single(0)/double(1) |
| 8685 | instr [21,10] = 11 0000 1101 10 |
| 8686 | instr [9,5] = Fn |
| 8687 | instr [4,0] = Fd. */ |
| 8688 | |
| 8689 | unsigned Fn = INSTR (9, 5); |
| 8690 | unsigned Fd = INSTR (4, 0); |
| 8691 | |
| 8692 | NYI_assert (31, 23, 0x0FC); |
| 8693 | NYI_assert (21, 10, 0xC36); |
| 8694 | |
| 8695 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8696 | if (INSTR (22, 22)) |
| 8697 | { |
| 8698 | double val1 = aarch64_get_vec_double (cpu, Fn, 0); |
| 8699 | double val2 = aarch64_get_vec_double (cpu, Fn, 1); |
| 8700 | |
| 8701 | aarch64_set_FP_double (cpu, Fd, val1 + val2); |
| 8702 | } |
| 8703 | else |
| 8704 | { |
| 8705 | float val1 = aarch64_get_vec_float (cpu, Fn, 0); |
| 8706 | float val2 = aarch64_get_vec_float (cpu, Fn, 1); |
| 8707 | |
| 8708 | aarch64_set_FP_float (cpu, Fd, val1 + val2); |
| 8709 | } |
| 8710 | } |
| 8711 | |
| 8712 | /* Floating point absolute difference. */ |
| 8713 | |
| 8714 | static void |
| 8715 | do_scalar_FABD (sim_cpu *cpu) |
| 8716 | { |
| 8717 | /* instr [31,23] = 0111 1110 1 |
| 8718 | instr [22] = float(0)/double(1) |
| 8719 | instr [21] = 1 |
| 8720 | instr [20,16] = Rm |
| 8721 | instr [15,10] = 1101 01 |
| 8722 | instr [9, 5] = Rn |
| 8723 | instr [4, 0] = Rd. */ |
| 8724 | |
| 8725 | unsigned rm = INSTR (20, 16); |
| 8726 | unsigned rn = INSTR (9, 5); |
| 8727 | unsigned rd = INSTR (4, 0); |
| 8728 | |
| 8729 | NYI_assert (31, 23, 0x0FD); |
| 8730 | NYI_assert (21, 21, 1); |
| 8731 | NYI_assert (15, 10, 0x35); |
| 8732 | |
| 8733 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8734 | if (INSTR (22, 22)) |
| 8735 | aarch64_set_FP_double (cpu, rd, |
| 8736 | fabs (aarch64_get_FP_double (cpu, rn) |
| 8737 | - aarch64_get_FP_double (cpu, rm))); |
| 8738 | else |
| 8739 | aarch64_set_FP_float (cpu, rd, |
| 8740 | fabsf (aarch64_get_FP_float (cpu, rn) |
| 8741 | - aarch64_get_FP_float (cpu, rm))); |
| 8742 | } |
| 8743 | |
| 8744 | static void |
| 8745 | do_scalar_CMGT (sim_cpu *cpu) |
| 8746 | { |
| 8747 | /* instr [31,21] = 0101 1110 111 |
| 8748 | instr [20,16] = Rm |
| 8749 | instr [15,10] = 00 1101 |
| 8750 | instr [9, 5] = Rn |
| 8751 | instr [4, 0] = Rd. */ |
| 8752 | |
| 8753 | unsigned rm = INSTR (20, 16); |
| 8754 | unsigned rn = INSTR (9, 5); |
| 8755 | unsigned rd = INSTR (4, 0); |
| 8756 | |
| 8757 | NYI_assert (31, 21, 0x2F7); |
| 8758 | NYI_assert (15, 10, 0x0D); |
| 8759 | |
| 8760 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8761 | aarch64_set_vec_u64 (cpu, rd, 0, |
| 8762 | aarch64_get_vec_u64 (cpu, rn, 0) > |
| 8763 | aarch64_get_vec_u64 (cpu, rm, 0) ? -1L : 0L); |
| 8764 | } |
| 8765 | |
| 8766 | static void |
| 8767 | do_scalar_USHR (sim_cpu *cpu) |
| 8768 | { |
| 8769 | /* instr [31,23] = 0111 1111 0 |
| 8770 | instr [22,16] = shift amount |
| 8771 | instr [15,10] = 0000 01 |
| 8772 | instr [9, 5] = Rn |
| 8773 | instr [4, 0] = Rd. */ |
| 8774 | |
| 8775 | unsigned amount = 128 - INSTR (22, 16); |
| 8776 | unsigned rn = INSTR (9, 5); |
| 8777 | unsigned rd = INSTR (4, 0); |
| 8778 | |
| 8779 | NYI_assert (31, 23, 0x0FE); |
| 8780 | NYI_assert (15, 10, 0x01); |
| 8781 | |
| 8782 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8783 | aarch64_set_vec_u64 (cpu, rd, 0, |
| 8784 | aarch64_get_vec_u64 (cpu, rn, 0) >> amount); |
| 8785 | } |
| 8786 | |
| 8787 | static void |
| 8788 | do_scalar_SSHL (sim_cpu *cpu) |
| 8789 | { |
| 8790 | /* instr [31,21] = 0101 1110 111 |
| 8791 | instr [20,16] = Rm |
| 8792 | instr [15,10] = 0100 01 |
| 8793 | instr [9, 5] = Rn |
| 8794 | instr [4, 0] = Rd. */ |
| 8795 | |
| 8796 | unsigned rm = INSTR (20, 16); |
| 8797 | unsigned rn = INSTR (9, 5); |
| 8798 | unsigned rd = INSTR (4, 0); |
| 8799 | signed int shift = aarch64_get_vec_s8 (cpu, rm, 0); |
| 8800 | |
| 8801 | NYI_assert (31, 21, 0x2F7); |
| 8802 | NYI_assert (15, 10, 0x11); |
| 8803 | |
| 8804 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8805 | if (shift >= 0) |
| 8806 | aarch64_set_vec_s64 (cpu, rd, 0, |
| 8807 | aarch64_get_vec_s64 (cpu, rn, 0) << shift); |
| 8808 | else |
| 8809 | aarch64_set_vec_s64 (cpu, rd, 0, |
| 8810 | aarch64_get_vec_s64 (cpu, rn, 0) >> - shift); |
| 8811 | } |
| 8812 | |
| 8813 | static void |
| 8814 | do_scalar_shift (sim_cpu *cpu) |
| 8815 | { |
| 8816 | /* instr [31,23] = 0101 1111 0 |
| 8817 | instr [22,16] = shift amount |
| 8818 | instr [15,10] = 0101 01 [SHL] |
| 8819 | instr [15,10] = 0000 01 [SSHR] |
| 8820 | instr [9, 5] = Rn |
| 8821 | instr [4, 0] = Rd. */ |
| 8822 | |
| 8823 | unsigned rn = INSTR (9, 5); |
| 8824 | unsigned rd = INSTR (4, 0); |
| 8825 | unsigned amount; |
| 8826 | |
| 8827 | NYI_assert (31, 23, 0x0BE); |
| 8828 | |
| 8829 | if (INSTR (22, 22) == 0) |
| 8830 | HALT_UNALLOC; |
| 8831 | |
| 8832 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8833 | switch (INSTR (15, 10)) |
| 8834 | { |
| 8835 | case 0x01: /* SSHR */ |
| 8836 | amount = 128 - INSTR (22, 16); |
| 8837 | aarch64_set_vec_s64 (cpu, rd, 0, |
| 8838 | aarch64_get_vec_s64 (cpu, rn, 0) >> amount); |
| 8839 | return; |
| 8840 | case 0x15: /* SHL */ |
| 8841 | amount = INSTR (22, 16) - 64; |
| 8842 | aarch64_set_vec_u64 (cpu, rd, 0, |
| 8843 | aarch64_get_vec_u64 (cpu, rn, 0) << amount); |
| 8844 | return; |
| 8845 | default: |
| 8846 | HALT_NYI; |
| 8847 | } |
| 8848 | } |
| 8849 | |
| 8850 | /* FCMEQ FCMGT FCMGE. */ |
| 8851 | static void |
| 8852 | do_scalar_FCM (sim_cpu *cpu) |
| 8853 | { |
| 8854 | /* instr [31,30] = 01 |
| 8855 | instr [29] = U |
| 8856 | instr [28,24] = 1 1110 |
| 8857 | instr [23] = E |
| 8858 | instr [22] = size |
| 8859 | instr [21] = 1 |
| 8860 | instr [20,16] = Rm |
| 8861 | instr [15,12] = 1110 |
| 8862 | instr [11] = AC |
| 8863 | instr [10] = 1 |
| 8864 | instr [9, 5] = Rn |
| 8865 | instr [4, 0] = Rd. */ |
| 8866 | |
| 8867 | unsigned rm = INSTR (20, 16); |
| 8868 | unsigned rn = INSTR (9, 5); |
| 8869 | unsigned rd = INSTR (4, 0); |
| 8870 | unsigned EUac = (INSTR (23, 23) << 2) | (INSTR (29, 29) << 1) | INSTR (11, 11); |
| 8871 | unsigned result; |
| 8872 | float val1; |
| 8873 | float val2; |
| 8874 | |
| 8875 | NYI_assert (31, 30, 1); |
| 8876 | NYI_assert (28, 24, 0x1E); |
| 8877 | NYI_assert (21, 21, 1); |
| 8878 | NYI_assert (15, 12, 0xE); |
| 8879 | NYI_assert (10, 10, 1); |
| 8880 | |
| 8881 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8882 | if (INSTR (22, 22)) |
| 8883 | { |
| 8884 | double val1 = aarch64_get_FP_double (cpu, rn); |
| 8885 | double val2 = aarch64_get_FP_double (cpu, rm); |
| 8886 | |
| 8887 | switch (EUac) |
| 8888 | { |
| 8889 | case 0: /* 000 */ |
| 8890 | result = val1 == val2; |
| 8891 | break; |
| 8892 | |
| 8893 | case 3: /* 011 */ |
| 8894 | val1 = fabs (val1); |
| 8895 | val2 = fabs (val2); |
| 8896 | /* Fall through. */ |
| 8897 | case 2: /* 010 */ |
| 8898 | result = val1 >= val2; |
| 8899 | break; |
| 8900 | |
| 8901 | case 7: /* 111 */ |
| 8902 | val1 = fabs (val1); |
| 8903 | val2 = fabs (val2); |
| 8904 | /* Fall through. */ |
| 8905 | case 6: /* 110 */ |
| 8906 | result = val1 > val2; |
| 8907 | break; |
| 8908 | |
| 8909 | default: |
| 8910 | HALT_UNALLOC; |
| 8911 | } |
| 8912 | |
| 8913 | aarch64_set_vec_u32 (cpu, rd, 0, result ? -1 : 0); |
| 8914 | return; |
| 8915 | } |
| 8916 | |
| 8917 | val1 = aarch64_get_FP_float (cpu, rn); |
| 8918 | val2 = aarch64_get_FP_float (cpu, rm); |
| 8919 | |
| 8920 | switch (EUac) |
| 8921 | { |
| 8922 | case 0: /* 000 */ |
| 8923 | result = val1 == val2; |
| 8924 | break; |
| 8925 | |
| 8926 | case 3: /* 011 */ |
| 8927 | val1 = fabsf (val1); |
| 8928 | val2 = fabsf (val2); |
| 8929 | /* Fall through. */ |
| 8930 | case 2: /* 010 */ |
| 8931 | result = val1 >= val2; |
| 8932 | break; |
| 8933 | |
| 8934 | case 7: /* 111 */ |
| 8935 | val1 = fabsf (val1); |
| 8936 | val2 = fabsf (val2); |
| 8937 | /* Fall through. */ |
| 8938 | case 6: /* 110 */ |
| 8939 | result = val1 > val2; |
| 8940 | break; |
| 8941 | |
| 8942 | default: |
| 8943 | HALT_UNALLOC; |
| 8944 | } |
| 8945 | |
| 8946 | aarch64_set_vec_u32 (cpu, rd, 0, result ? -1 : 0); |
| 8947 | } |
| 8948 | |
| 8949 | /* An alias of DUP. */ |
| 8950 | static void |
| 8951 | do_scalar_MOV (sim_cpu *cpu) |
| 8952 | { |
| 8953 | /* instr [31,21] = 0101 1110 000 |
| 8954 | instr [20,16] = imm5 |
| 8955 | instr [15,10] = 0000 01 |
| 8956 | instr [9, 5] = Rn |
| 8957 | instr [4, 0] = Rd. */ |
| 8958 | |
| 8959 | unsigned rn = INSTR (9, 5); |
| 8960 | unsigned rd = INSTR (4, 0); |
| 8961 | unsigned index; |
| 8962 | |
| 8963 | NYI_assert (31, 21, 0x2F0); |
| 8964 | NYI_assert (15, 10, 0x01); |
| 8965 | |
| 8966 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 8967 | if (INSTR (16, 16)) |
| 8968 | { |
| 8969 | /* 8-bit. */ |
| 8970 | index = INSTR (20, 17); |
| 8971 | aarch64_set_vec_u8 |
| 8972 | (cpu, rd, 0, aarch64_get_vec_u8 (cpu, rn, index)); |
| 8973 | } |
| 8974 | else if (INSTR (17, 17)) |
| 8975 | { |
| 8976 | /* 16-bit. */ |
| 8977 | index = INSTR (20, 18); |
| 8978 | aarch64_set_vec_u16 |
| 8979 | (cpu, rd, 0, aarch64_get_vec_u16 (cpu, rn, index)); |
| 8980 | } |
| 8981 | else if (INSTR (18, 18)) |
| 8982 | { |
| 8983 | /* 32-bit. */ |
| 8984 | index = INSTR (20, 19); |
| 8985 | aarch64_set_vec_u32 |
| 8986 | (cpu, rd, 0, aarch64_get_vec_u32 (cpu, rn, index)); |
| 8987 | } |
| 8988 | else if (INSTR (19, 19)) |
| 8989 | { |
| 8990 | /* 64-bit. */ |
| 8991 | index = INSTR (20, 20); |
| 8992 | aarch64_set_vec_u64 |
| 8993 | (cpu, rd, 0, aarch64_get_vec_u64 (cpu, rn, index)); |
| 8994 | } |
| 8995 | else |
| 8996 | HALT_UNALLOC; |
| 8997 | } |
| 8998 | |
| 8999 | static void |
| 9000 | do_scalar_NEG (sim_cpu *cpu) |
| 9001 | { |
| 9002 | /* instr [31,10] = 0111 1110 1110 0000 1011 10 |
| 9003 | instr [9, 5] = Rn |
| 9004 | instr [4, 0] = Rd. */ |
| 9005 | |
| 9006 | unsigned rn = INSTR (9, 5); |
| 9007 | unsigned rd = INSTR (4, 0); |
| 9008 | |
| 9009 | NYI_assert (31, 10, 0x1FB82E); |
| 9010 | |
| 9011 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9012 | aarch64_set_vec_u64 (cpu, rd, 0, - aarch64_get_vec_u64 (cpu, rn, 0)); |
| 9013 | } |
| 9014 | |
| 9015 | static void |
| 9016 | do_scalar_USHL (sim_cpu *cpu) |
| 9017 | { |
| 9018 | /* instr [31,21] = 0111 1110 111 |
| 9019 | instr [20,16] = Rm |
| 9020 | instr [15,10] = 0100 01 |
| 9021 | instr [9, 5] = Rn |
| 9022 | instr [4, 0] = Rd. */ |
| 9023 | |
| 9024 | unsigned rm = INSTR (20, 16); |
| 9025 | unsigned rn = INSTR (9, 5); |
| 9026 | unsigned rd = INSTR (4, 0); |
| 9027 | signed int shift = aarch64_get_vec_s8 (cpu, rm, 0); |
| 9028 | |
| 9029 | NYI_assert (31, 21, 0x3F7); |
| 9030 | NYI_assert (15, 10, 0x11); |
| 9031 | |
| 9032 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9033 | if (shift >= 0) |
| 9034 | aarch64_set_vec_u64 (cpu, rd, 0, aarch64_get_vec_u64 (cpu, rn, 0) << shift); |
| 9035 | else |
| 9036 | aarch64_set_vec_u64 (cpu, rd, 0, aarch64_get_vec_u64 (cpu, rn, 0) >> - shift); |
| 9037 | } |
| 9038 | |
| 9039 | static void |
| 9040 | do_double_add (sim_cpu *cpu) |
| 9041 | { |
| 9042 | /* instr [31,21] = 0101 1110 111 |
| 9043 | instr [20,16] = Fn |
| 9044 | instr [15,10] = 1000 01 |
| 9045 | instr [9,5] = Fm |
| 9046 | instr [4,0] = Fd. */ |
| 9047 | unsigned Fd; |
| 9048 | unsigned Fm; |
| 9049 | unsigned Fn; |
| 9050 | double val1; |
| 9051 | double val2; |
| 9052 | |
| 9053 | NYI_assert (31, 21, 0x2F7); |
| 9054 | NYI_assert (15, 10, 0x21); |
| 9055 | |
| 9056 | Fd = INSTR (4, 0); |
| 9057 | Fm = INSTR (9, 5); |
| 9058 | Fn = INSTR (20, 16); |
| 9059 | |
| 9060 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9061 | val1 = aarch64_get_FP_double (cpu, Fm); |
| 9062 | val2 = aarch64_get_FP_double (cpu, Fn); |
| 9063 | |
| 9064 | aarch64_set_FP_double (cpu, Fd, val1 + val2); |
| 9065 | } |
| 9066 | |
| 9067 | static void |
| 9068 | do_scalar_UCVTF (sim_cpu *cpu) |
| 9069 | { |
| 9070 | /* instr [31,23] = 0111 1110 0 |
| 9071 | instr [22] = single(0)/double(1) |
| 9072 | instr [21,10] = 10 0001 1101 10 |
| 9073 | instr [9,5] = rn |
| 9074 | instr [4,0] = rd. */ |
| 9075 | |
| 9076 | unsigned rn = INSTR (9, 5); |
| 9077 | unsigned rd = INSTR (4, 0); |
| 9078 | |
| 9079 | NYI_assert (31, 23, 0x0FC); |
| 9080 | NYI_assert (21, 10, 0x876); |
| 9081 | |
| 9082 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9083 | if (INSTR (22, 22)) |
| 9084 | { |
| 9085 | uint64_t val = aarch64_get_vec_u64 (cpu, rn, 0); |
| 9086 | |
| 9087 | aarch64_set_vec_double (cpu, rd, 0, (double) val); |
| 9088 | } |
| 9089 | else |
| 9090 | { |
| 9091 | uint32_t val = aarch64_get_vec_u32 (cpu, rn, 0); |
| 9092 | |
| 9093 | aarch64_set_vec_float (cpu, rd, 0, (float) val); |
| 9094 | } |
| 9095 | } |
| 9096 | |
| 9097 | static void |
| 9098 | do_scalar_vec (sim_cpu *cpu) |
| 9099 | { |
| 9100 | /* instr [30] = 1. */ |
| 9101 | /* instr [28,25] = 1111. */ |
| 9102 | switch (INSTR (31, 23)) |
| 9103 | { |
| 9104 | case 0xBC: |
| 9105 | switch (INSTR (15, 10)) |
| 9106 | { |
| 9107 | case 0x01: do_scalar_MOV (cpu); return; |
| 9108 | case 0x39: do_scalar_FCM (cpu); return; |
| 9109 | case 0x3B: do_scalar_FCM (cpu); return; |
| 9110 | } |
| 9111 | break; |
| 9112 | |
| 9113 | case 0xBE: do_scalar_shift (cpu); return; |
| 9114 | |
| 9115 | case 0xFC: |
| 9116 | switch (INSTR (15, 10)) |
| 9117 | { |
| 9118 | case 0x36: |
| 9119 | switch (INSTR (21, 16)) |
| 9120 | { |
| 9121 | case 0x30: do_scalar_FADDP (cpu); return; |
| 9122 | case 0x21: do_scalar_UCVTF (cpu); return; |
| 9123 | } |
| 9124 | HALT_NYI; |
| 9125 | case 0x39: do_scalar_FCM (cpu); return; |
| 9126 | case 0x3B: do_scalar_FCM (cpu); return; |
| 9127 | } |
| 9128 | break; |
| 9129 | |
| 9130 | case 0xFD: |
| 9131 | switch (INSTR (15, 10)) |
| 9132 | { |
| 9133 | case 0x0D: do_scalar_CMGT (cpu); return; |
| 9134 | case 0x11: do_scalar_USHL (cpu); return; |
| 9135 | case 0x2E: do_scalar_NEG (cpu); return; |
| 9136 | case 0x35: do_scalar_FABD (cpu); return; |
| 9137 | case 0x39: do_scalar_FCM (cpu); return; |
| 9138 | case 0x3B: do_scalar_FCM (cpu); return; |
| 9139 | default: |
| 9140 | HALT_NYI; |
| 9141 | } |
| 9142 | |
| 9143 | case 0xFE: do_scalar_USHR (cpu); return; |
| 9144 | |
| 9145 | case 0xBD: |
| 9146 | switch (INSTR (15, 10)) |
| 9147 | { |
| 9148 | case 0x21: do_double_add (cpu); return; |
| 9149 | case 0x11: do_scalar_SSHL (cpu); return; |
| 9150 | default: |
| 9151 | HALT_NYI; |
| 9152 | } |
| 9153 | |
| 9154 | default: |
| 9155 | HALT_NYI; |
| 9156 | } |
| 9157 | } |
| 9158 | |
| 9159 | static void |
| 9160 | dexAdvSIMD1 (sim_cpu *cpu) |
| 9161 | { |
| 9162 | /* instr [28,25] = 1 111. */ |
| 9163 | |
| 9164 | /* We are currently only interested in the basic |
| 9165 | scalar fp routines which all have bit 30 = 0. */ |
| 9166 | if (INSTR (30, 30)) |
| 9167 | do_scalar_vec (cpu); |
| 9168 | |
| 9169 | /* instr[24] is set for FP data processing 3-source and clear for |
| 9170 | all other basic scalar fp instruction groups. */ |
| 9171 | else if (INSTR (24, 24)) |
| 9172 | dexSimpleFPDataProc3Source (cpu); |
| 9173 | |
| 9174 | /* instr[21] is clear for floating <-> fixed conversions and set for |
| 9175 | all other basic scalar fp instruction groups. */ |
| 9176 | else if (!INSTR (21, 21)) |
| 9177 | dexSimpleFPFixedConvert (cpu); |
| 9178 | |
| 9179 | /* instr[11,10] : 01 ==> cond compare, 10 ==> Data Proc 2 Source |
| 9180 | 11 ==> cond select, 00 ==> other. */ |
| 9181 | else |
| 9182 | switch (INSTR (11, 10)) |
| 9183 | { |
| 9184 | case 1: dexSimpleFPCondCompare (cpu); return; |
| 9185 | case 2: dexSimpleFPDataProc2Source (cpu); return; |
| 9186 | case 3: dexSimpleFPCondSelect (cpu); return; |
| 9187 | |
| 9188 | default: |
| 9189 | /* Now an ordered cascade of tests. |
| 9190 | FP immediate has instr [12] == 1. |
| 9191 | FP compare has instr [13] == 1. |
| 9192 | FP Data Proc 1 Source has instr [14] == 1. |
| 9193 | FP floating <--> integer conversions has instr [15] == 0. */ |
| 9194 | if (INSTR (12, 12)) |
| 9195 | dexSimpleFPImmediate (cpu); |
| 9196 | |
| 9197 | else if (INSTR (13, 13)) |
| 9198 | dexSimpleFPCompare (cpu); |
| 9199 | |
| 9200 | else if (INSTR (14, 14)) |
| 9201 | dexSimpleFPDataProc1Source (cpu); |
| 9202 | |
| 9203 | else if (!INSTR (15, 15)) |
| 9204 | dexSimpleFPIntegerConvert (cpu); |
| 9205 | |
| 9206 | else |
| 9207 | /* If we get here then instr[15] == 1 which means UNALLOC. */ |
| 9208 | HALT_UNALLOC; |
| 9209 | } |
| 9210 | } |
| 9211 | |
| 9212 | /* PC relative addressing. */ |
| 9213 | |
| 9214 | static void |
| 9215 | pcadr (sim_cpu *cpu) |
| 9216 | { |
| 9217 | /* instr[31] = op : 0 ==> ADR, 1 ==> ADRP |
| 9218 | instr[30,29] = immlo |
| 9219 | instr[23,5] = immhi. */ |
| 9220 | uint64_t address; |
| 9221 | unsigned rd = INSTR (4, 0); |
| 9222 | uint32_t isPage = INSTR (31, 31); |
| 9223 | union { int64_t u64; uint64_t s64; } imm; |
| 9224 | uint64_t offset; |
| 9225 | |
| 9226 | imm.s64 = simm64 (aarch64_get_instr (cpu), 23, 5); |
| 9227 | offset = imm.u64; |
| 9228 | offset = (offset << 2) | INSTR (30, 29); |
| 9229 | |
| 9230 | address = aarch64_get_PC (cpu); |
| 9231 | |
| 9232 | if (isPage) |
| 9233 | { |
| 9234 | offset <<= 12; |
| 9235 | address &= ~0xfff; |
| 9236 | } |
| 9237 | |
| 9238 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9239 | aarch64_set_reg_u64 (cpu, rd, NO_SP, address + offset); |
| 9240 | } |
| 9241 | |
| 9242 | /* Specific decode and execute for group Data Processing Immediate. */ |
| 9243 | |
| 9244 | static void |
| 9245 | dexPCRelAddressing (sim_cpu *cpu) |
| 9246 | { |
| 9247 | /* assert instr[28,24] = 10000. */ |
| 9248 | pcadr (cpu); |
| 9249 | } |
| 9250 | |
| 9251 | /* Immediate logical. |
| 9252 | The bimm32/64 argument is constructed by replicating a 2, 4, 8, |
| 9253 | 16, 32 or 64 bit sequence pulled out at decode and possibly |
| 9254 | inverting it.. |
| 9255 | |
| 9256 | N.B. the output register (dest) can normally be Xn or SP |
| 9257 | the exception occurs for flag setting instructions which may |
| 9258 | only use Xn for the output (dest). The input register can |
| 9259 | never be SP. */ |
| 9260 | |
| 9261 | /* 32 bit and immediate. */ |
| 9262 | static void |
| 9263 | and32 (sim_cpu *cpu, uint32_t bimm) |
| 9264 | { |
| 9265 | unsigned rn = INSTR (9, 5); |
| 9266 | unsigned rd = INSTR (4, 0); |
| 9267 | |
| 9268 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9269 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 9270 | aarch64_get_reg_u32 (cpu, rn, NO_SP) & bimm); |
| 9271 | } |
| 9272 | |
| 9273 | /* 64 bit and immediate. */ |
| 9274 | static void |
| 9275 | and64 (sim_cpu *cpu, uint64_t bimm) |
| 9276 | { |
| 9277 | unsigned rn = INSTR (9, 5); |
| 9278 | unsigned rd = INSTR (4, 0); |
| 9279 | |
| 9280 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9281 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 9282 | aarch64_get_reg_u64 (cpu, rn, NO_SP) & bimm); |
| 9283 | } |
| 9284 | |
| 9285 | /* 32 bit and immediate set flags. */ |
| 9286 | static void |
| 9287 | ands32 (sim_cpu *cpu, uint32_t bimm) |
| 9288 | { |
| 9289 | unsigned rn = INSTR (9, 5); |
| 9290 | unsigned rd = INSTR (4, 0); |
| 9291 | |
| 9292 | uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 9293 | uint32_t value2 = bimm; |
| 9294 | |
| 9295 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9296 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2); |
| 9297 | set_flags_for_binop32 (cpu, value1 & value2); |
| 9298 | } |
| 9299 | |
| 9300 | /* 64 bit and immediate set flags. */ |
| 9301 | static void |
| 9302 | ands64 (sim_cpu *cpu, uint64_t bimm) |
| 9303 | { |
| 9304 | unsigned rn = INSTR (9, 5); |
| 9305 | unsigned rd = INSTR (4, 0); |
| 9306 | |
| 9307 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 9308 | uint64_t value2 = bimm; |
| 9309 | |
| 9310 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9311 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2); |
| 9312 | set_flags_for_binop64 (cpu, value1 & value2); |
| 9313 | } |
| 9314 | |
| 9315 | /* 32 bit exclusive or immediate. */ |
| 9316 | static void |
| 9317 | eor32 (sim_cpu *cpu, uint32_t bimm) |
| 9318 | { |
| 9319 | unsigned rn = INSTR (9, 5); |
| 9320 | unsigned rd = INSTR (4, 0); |
| 9321 | |
| 9322 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9323 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 9324 | aarch64_get_reg_u32 (cpu, rn, NO_SP) ^ bimm); |
| 9325 | } |
| 9326 | |
| 9327 | /* 64 bit exclusive or immediate. */ |
| 9328 | static void |
| 9329 | eor64 (sim_cpu *cpu, uint64_t bimm) |
| 9330 | { |
| 9331 | unsigned rn = INSTR (9, 5); |
| 9332 | unsigned rd = INSTR (4, 0); |
| 9333 | |
| 9334 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9335 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 9336 | aarch64_get_reg_u64 (cpu, rn, NO_SP) ^ bimm); |
| 9337 | } |
| 9338 | |
| 9339 | /* 32 bit or immediate. */ |
| 9340 | static void |
| 9341 | orr32 (sim_cpu *cpu, uint32_t bimm) |
| 9342 | { |
| 9343 | unsigned rn = INSTR (9, 5); |
| 9344 | unsigned rd = INSTR (4, 0); |
| 9345 | |
| 9346 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9347 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 9348 | aarch64_get_reg_u32 (cpu, rn, NO_SP) | bimm); |
| 9349 | } |
| 9350 | |
| 9351 | /* 64 bit or immediate. */ |
| 9352 | static void |
| 9353 | orr64 (sim_cpu *cpu, uint64_t bimm) |
| 9354 | { |
| 9355 | unsigned rn = INSTR (9, 5); |
| 9356 | unsigned rd = INSTR (4, 0); |
| 9357 | |
| 9358 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9359 | aarch64_set_reg_u64 (cpu, rd, SP_OK, |
| 9360 | aarch64_get_reg_u64 (cpu, rn, NO_SP) | bimm); |
| 9361 | } |
| 9362 | |
| 9363 | /* Logical shifted register. |
| 9364 | These allow an optional LSL, ASR, LSR or ROR to the second source |
| 9365 | register with a count up to the register bit count. |
| 9366 | N.B register args may not be SP. */ |
| 9367 | |
| 9368 | /* 32 bit AND shifted register. */ |
| 9369 | static void |
| 9370 | and32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9371 | { |
| 9372 | unsigned rm = INSTR (20, 16); |
| 9373 | unsigned rn = INSTR (9, 5); |
| 9374 | unsigned rd = INSTR (4, 0); |
| 9375 | |
| 9376 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9377 | aarch64_set_reg_u64 |
| 9378 | (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 9379 | & shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count)); |
| 9380 | } |
| 9381 | |
| 9382 | /* 64 bit AND shifted register. */ |
| 9383 | static void |
| 9384 | and64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9385 | { |
| 9386 | unsigned rm = INSTR (20, 16); |
| 9387 | unsigned rn = INSTR (9, 5); |
| 9388 | unsigned rd = INSTR (4, 0); |
| 9389 | |
| 9390 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9391 | aarch64_set_reg_u64 |
| 9392 | (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 9393 | & shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count)); |
| 9394 | } |
| 9395 | |
| 9396 | /* 32 bit AND shifted register setting flags. */ |
| 9397 | static void |
| 9398 | ands32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9399 | { |
| 9400 | unsigned rm = INSTR (20, 16); |
| 9401 | unsigned rn = INSTR (9, 5); |
| 9402 | unsigned rd = INSTR (4, 0); |
| 9403 | |
| 9404 | uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 9405 | uint32_t value2 = shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 9406 | shift, count); |
| 9407 | |
| 9408 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9409 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2); |
| 9410 | set_flags_for_binop32 (cpu, value1 & value2); |
| 9411 | } |
| 9412 | |
| 9413 | /* 64 bit AND shifted register setting flags. */ |
| 9414 | static void |
| 9415 | ands64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9416 | { |
| 9417 | unsigned rm = INSTR (20, 16); |
| 9418 | unsigned rn = INSTR (9, 5); |
| 9419 | unsigned rd = INSTR (4, 0); |
| 9420 | |
| 9421 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 9422 | uint64_t value2 = shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), |
| 9423 | shift, count); |
| 9424 | |
| 9425 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9426 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2); |
| 9427 | set_flags_for_binop64 (cpu, value1 & value2); |
| 9428 | } |
| 9429 | |
| 9430 | /* 32 bit BIC shifted register. */ |
| 9431 | static void |
| 9432 | bic32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9433 | { |
| 9434 | unsigned rm = INSTR (20, 16); |
| 9435 | unsigned rn = INSTR (9, 5); |
| 9436 | unsigned rd = INSTR (4, 0); |
| 9437 | |
| 9438 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9439 | aarch64_set_reg_u64 |
| 9440 | (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 9441 | & ~ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count)); |
| 9442 | } |
| 9443 | |
| 9444 | /* 64 bit BIC shifted register. */ |
| 9445 | static void |
| 9446 | bic64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9447 | { |
| 9448 | unsigned rm = INSTR (20, 16); |
| 9449 | unsigned rn = INSTR (9, 5); |
| 9450 | unsigned rd = INSTR (4, 0); |
| 9451 | |
| 9452 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9453 | aarch64_set_reg_u64 |
| 9454 | (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 9455 | & ~ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count)); |
| 9456 | } |
| 9457 | |
| 9458 | /* 32 bit BIC shifted register setting flags. */ |
| 9459 | static void |
| 9460 | bics32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9461 | { |
| 9462 | unsigned rm = INSTR (20, 16); |
| 9463 | unsigned rn = INSTR (9, 5); |
| 9464 | unsigned rd = INSTR (4, 0); |
| 9465 | |
| 9466 | uint32_t value1 = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 9467 | uint32_t value2 = ~ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 9468 | shift, count); |
| 9469 | |
| 9470 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9471 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2); |
| 9472 | set_flags_for_binop32 (cpu, value1 & value2); |
| 9473 | } |
| 9474 | |
| 9475 | /* 64 bit BIC shifted register setting flags. */ |
| 9476 | static void |
| 9477 | bics64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9478 | { |
| 9479 | unsigned rm = INSTR (20, 16); |
| 9480 | unsigned rn = INSTR (9, 5); |
| 9481 | unsigned rd = INSTR (4, 0); |
| 9482 | |
| 9483 | uint64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 9484 | uint64_t value2 = ~ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), |
| 9485 | shift, count); |
| 9486 | |
| 9487 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9488 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value1 & value2); |
| 9489 | set_flags_for_binop64 (cpu, value1 & value2); |
| 9490 | } |
| 9491 | |
| 9492 | /* 32 bit EON shifted register. */ |
| 9493 | static void |
| 9494 | eon32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9495 | { |
| 9496 | unsigned rm = INSTR (20, 16); |
| 9497 | unsigned rn = INSTR (9, 5); |
| 9498 | unsigned rd = INSTR (4, 0); |
| 9499 | |
| 9500 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9501 | aarch64_set_reg_u64 |
| 9502 | (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 9503 | ^ ~ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count)); |
| 9504 | } |
| 9505 | |
| 9506 | /* 64 bit EON shifted register. */ |
| 9507 | static void |
| 9508 | eon64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9509 | { |
| 9510 | unsigned rm = INSTR (20, 16); |
| 9511 | unsigned rn = INSTR (9, 5); |
| 9512 | unsigned rd = INSTR (4, 0); |
| 9513 | |
| 9514 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9515 | aarch64_set_reg_u64 |
| 9516 | (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 9517 | ^ ~ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count)); |
| 9518 | } |
| 9519 | |
| 9520 | /* 32 bit EOR shifted register. */ |
| 9521 | static void |
| 9522 | eor32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9523 | { |
| 9524 | unsigned rm = INSTR (20, 16); |
| 9525 | unsigned rn = INSTR (9, 5); |
| 9526 | unsigned rd = INSTR (4, 0); |
| 9527 | |
| 9528 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9529 | aarch64_set_reg_u64 |
| 9530 | (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 9531 | ^ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count)); |
| 9532 | } |
| 9533 | |
| 9534 | /* 64 bit EOR shifted register. */ |
| 9535 | static void |
| 9536 | eor64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9537 | { |
| 9538 | unsigned rm = INSTR (20, 16); |
| 9539 | unsigned rn = INSTR (9, 5); |
| 9540 | unsigned rd = INSTR (4, 0); |
| 9541 | |
| 9542 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9543 | aarch64_set_reg_u64 |
| 9544 | (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 9545 | ^ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count)); |
| 9546 | } |
| 9547 | |
| 9548 | /* 32 bit ORR shifted register. */ |
| 9549 | static void |
| 9550 | orr32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9551 | { |
| 9552 | unsigned rm = INSTR (20, 16); |
| 9553 | unsigned rn = INSTR (9, 5); |
| 9554 | unsigned rd = INSTR (4, 0); |
| 9555 | |
| 9556 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9557 | aarch64_set_reg_u64 |
| 9558 | (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 9559 | | shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count)); |
| 9560 | } |
| 9561 | |
| 9562 | /* 64 bit ORR shifted register. */ |
| 9563 | static void |
| 9564 | orr64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9565 | { |
| 9566 | unsigned rm = INSTR (20, 16); |
| 9567 | unsigned rn = INSTR (9, 5); |
| 9568 | unsigned rd = INSTR (4, 0); |
| 9569 | |
| 9570 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9571 | aarch64_set_reg_u64 |
| 9572 | (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 9573 | | shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count)); |
| 9574 | } |
| 9575 | |
| 9576 | /* 32 bit ORN shifted register. */ |
| 9577 | static void |
| 9578 | orn32_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9579 | { |
| 9580 | unsigned rm = INSTR (20, 16); |
| 9581 | unsigned rn = INSTR (9, 5); |
| 9582 | unsigned rd = INSTR (4, 0); |
| 9583 | |
| 9584 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9585 | aarch64_set_reg_u64 |
| 9586 | (cpu, rd, NO_SP, aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 9587 | | ~ shifted32 (aarch64_get_reg_u32 (cpu, rm, NO_SP), shift, count)); |
| 9588 | } |
| 9589 | |
| 9590 | /* 64 bit ORN shifted register. */ |
| 9591 | static void |
| 9592 | orn64_shift (sim_cpu *cpu, Shift shift, uint32_t count) |
| 9593 | { |
| 9594 | unsigned rm = INSTR (20, 16); |
| 9595 | unsigned rn = INSTR (9, 5); |
| 9596 | unsigned rd = INSTR (4, 0); |
| 9597 | |
| 9598 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9599 | aarch64_set_reg_u64 |
| 9600 | (cpu, rd, NO_SP, aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 9601 | | ~ shifted64 (aarch64_get_reg_u64 (cpu, rm, NO_SP), shift, count)); |
| 9602 | } |
| 9603 | |
| 9604 | static void |
| 9605 | dexLogicalImmediate (sim_cpu *cpu) |
| 9606 | { |
| 9607 | /* assert instr[28,23] = 1001000 |
| 9608 | instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 9609 | instr[30,29] = op : 0 ==> AND, 1 ==> ORR, 2 ==> EOR, 3 ==> ANDS |
| 9610 | instr[22] = N : used to construct immediate mask |
| 9611 | instr[21,16] = immr |
| 9612 | instr[15,10] = imms |
| 9613 | instr[9,5] = Rn |
| 9614 | instr[4,0] = Rd */ |
| 9615 | |
| 9616 | /* 32 bit operations must have N = 0 or else we have an UNALLOC. */ |
| 9617 | uint32_t size = INSTR (31, 31); |
| 9618 | uint32_t N = INSTR (22, 22); |
| 9619 | /* uint32_t immr = INSTR (21, 16);. */ |
| 9620 | /* uint32_t imms = INSTR (15, 10);. */ |
| 9621 | uint32_t index = INSTR (22, 10); |
| 9622 | uint64_t bimm64 = LITable [index]; |
| 9623 | uint32_t dispatch = INSTR (30, 29); |
| 9624 | |
| 9625 | if (~size & N) |
| 9626 | HALT_UNALLOC; |
| 9627 | |
| 9628 | if (!bimm64) |
| 9629 | HALT_UNALLOC; |
| 9630 | |
| 9631 | if (size == 0) |
| 9632 | { |
| 9633 | uint32_t bimm = (uint32_t) bimm64; |
| 9634 | |
| 9635 | switch (dispatch) |
| 9636 | { |
| 9637 | case 0: and32 (cpu, bimm); return; |
| 9638 | case 1: orr32 (cpu, bimm); return; |
| 9639 | case 2: eor32 (cpu, bimm); return; |
| 9640 | case 3: ands32 (cpu, bimm); return; |
| 9641 | } |
| 9642 | } |
| 9643 | else |
| 9644 | { |
| 9645 | switch (dispatch) |
| 9646 | { |
| 9647 | case 0: and64 (cpu, bimm64); return; |
| 9648 | case 1: orr64 (cpu, bimm64); return; |
| 9649 | case 2: eor64 (cpu, bimm64); return; |
| 9650 | case 3: ands64 (cpu, bimm64); return; |
| 9651 | } |
| 9652 | } |
| 9653 | HALT_UNALLOC; |
| 9654 | } |
| 9655 | |
| 9656 | /* Immediate move. |
| 9657 | The uimm argument is a 16 bit value to be inserted into the |
| 9658 | target register the pos argument locates the 16 bit word in the |
| 9659 | dest register i.e. it is in {0, 1} for 32 bit and {0, 1, 2, |
| 9660 | 3} for 64 bit. |
| 9661 | N.B register arg may not be SP so it should be. |
| 9662 | accessed using the setGZRegisterXXX accessors. */ |
| 9663 | |
| 9664 | /* 32 bit move 16 bit immediate zero remaining shorts. */ |
| 9665 | static void |
| 9666 | movz32 (sim_cpu *cpu, uint32_t val, uint32_t pos) |
| 9667 | { |
| 9668 | unsigned rd = INSTR (4, 0); |
| 9669 | |
| 9670 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9671 | aarch64_set_reg_u64 (cpu, rd, NO_SP, val << (pos * 16)); |
| 9672 | } |
| 9673 | |
| 9674 | /* 64 bit move 16 bit immediate zero remaining shorts. */ |
| 9675 | static void |
| 9676 | movz64 (sim_cpu *cpu, uint32_t val, uint32_t pos) |
| 9677 | { |
| 9678 | unsigned rd = INSTR (4, 0); |
| 9679 | |
| 9680 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9681 | aarch64_set_reg_u64 (cpu, rd, NO_SP, ((uint64_t) val) << (pos * 16)); |
| 9682 | } |
| 9683 | |
| 9684 | /* 32 bit move 16 bit immediate negated. */ |
| 9685 | static void |
| 9686 | movn32 (sim_cpu *cpu, uint32_t val, uint32_t pos) |
| 9687 | { |
| 9688 | unsigned rd = INSTR (4, 0); |
| 9689 | |
| 9690 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9691 | aarch64_set_reg_u64 (cpu, rd, NO_SP, ((val << (pos * 16)) ^ 0xffffffffU)); |
| 9692 | } |
| 9693 | |
| 9694 | /* 64 bit move 16 bit immediate negated. */ |
| 9695 | static void |
| 9696 | movn64 (sim_cpu *cpu, uint32_t val, uint32_t pos) |
| 9697 | { |
| 9698 | unsigned rd = INSTR (4, 0); |
| 9699 | |
| 9700 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9701 | aarch64_set_reg_u64 |
| 9702 | (cpu, rd, NO_SP, ((((uint64_t) val) << (pos * 16)) |
| 9703 | ^ 0xffffffffffffffffULL)); |
| 9704 | } |
| 9705 | |
| 9706 | /* 32 bit move 16 bit immediate keep remaining shorts. */ |
| 9707 | static void |
| 9708 | movk32 (sim_cpu *cpu, uint32_t val, uint32_t pos) |
| 9709 | { |
| 9710 | unsigned rd = INSTR (4, 0); |
| 9711 | uint32_t current = aarch64_get_reg_u32 (cpu, rd, NO_SP); |
| 9712 | uint32_t value = val << (pos * 16); |
| 9713 | uint32_t mask = ~(0xffffU << (pos * 16)); |
| 9714 | |
| 9715 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9716 | aarch64_set_reg_u64 (cpu, rd, NO_SP, (value | (current & mask))); |
| 9717 | } |
| 9718 | |
| 9719 | /* 64 bit move 16 it immediate keep remaining shorts. */ |
| 9720 | static void |
| 9721 | movk64 (sim_cpu *cpu, uint32_t val, uint32_t pos) |
| 9722 | { |
| 9723 | unsigned rd = INSTR (4, 0); |
| 9724 | uint64_t current = aarch64_get_reg_u64 (cpu, rd, NO_SP); |
| 9725 | uint64_t value = (uint64_t) val << (pos * 16); |
| 9726 | uint64_t mask = ~(0xffffULL << (pos * 16)); |
| 9727 | |
| 9728 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9729 | aarch64_set_reg_u64 (cpu, rd, NO_SP, (value | (current & mask))); |
| 9730 | } |
| 9731 | |
| 9732 | static void |
| 9733 | dexMoveWideImmediate (sim_cpu *cpu) |
| 9734 | { |
| 9735 | /* assert instr[28:23] = 100101 |
| 9736 | instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 9737 | instr[30,29] = op : 0 ==> MOVN, 1 ==> UNALLOC, 2 ==> MOVZ, 3 ==> MOVK |
| 9738 | instr[22,21] = shift : 00 == LSL#0, 01 = LSL#16, 10 = LSL#32, 11 = LSL#48 |
| 9739 | instr[20,5] = uimm16 |
| 9740 | instr[4,0] = Rd */ |
| 9741 | |
| 9742 | /* N.B. the (multiple of 16) shift is applied by the called routine, |
| 9743 | we just pass the multiplier. */ |
| 9744 | |
| 9745 | uint32_t imm; |
| 9746 | uint32_t size = INSTR (31, 31); |
| 9747 | uint32_t op = INSTR (30, 29); |
| 9748 | uint32_t shift = INSTR (22, 21); |
| 9749 | |
| 9750 | /* 32 bit can only shift 0 or 1 lot of 16. |
| 9751 | anything else is an unallocated instruction. */ |
| 9752 | if (size == 0 && (shift > 1)) |
| 9753 | HALT_UNALLOC; |
| 9754 | |
| 9755 | if (op == 1) |
| 9756 | HALT_UNALLOC; |
| 9757 | |
| 9758 | imm = INSTR (20, 5); |
| 9759 | |
| 9760 | if (size == 0) |
| 9761 | { |
| 9762 | if (op == 0) |
| 9763 | movn32 (cpu, imm, shift); |
| 9764 | else if (op == 2) |
| 9765 | movz32 (cpu, imm, shift); |
| 9766 | else |
| 9767 | movk32 (cpu, imm, shift); |
| 9768 | } |
| 9769 | else |
| 9770 | { |
| 9771 | if (op == 0) |
| 9772 | movn64 (cpu, imm, shift); |
| 9773 | else if (op == 2) |
| 9774 | movz64 (cpu, imm, shift); |
| 9775 | else |
| 9776 | movk64 (cpu, imm, shift); |
| 9777 | } |
| 9778 | } |
| 9779 | |
| 9780 | /* Bitfield operations. |
| 9781 | These take a pair of bit positions r and s which are in {0..31} |
| 9782 | or {0..63} depending on the instruction word size. |
| 9783 | N.B register args may not be SP. */ |
| 9784 | |
| 9785 | /* OK, we start with ubfm which just needs to pick |
| 9786 | some bits out of source zero the rest and write |
| 9787 | the result to dest. Just need two logical shifts. */ |
| 9788 | |
| 9789 | /* 32 bit bitfield move, left and right of affected zeroed |
| 9790 | if r <= s Wd<s-r:0> = Wn<s:r> else Wd<32+s-r,32-r> = Wn<s:0>. */ |
| 9791 | static void |
| 9792 | ubfm32 (sim_cpu *cpu, uint32_t r, uint32_t s) |
| 9793 | { |
| 9794 | unsigned rd; |
| 9795 | unsigned rn = INSTR (9, 5); |
| 9796 | uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 9797 | |
| 9798 | /* Pick either s+1-r or s+1 consecutive bits out of the original word. */ |
| 9799 | if (r <= s) |
| 9800 | { |
| 9801 | /* 31:...:s:xxx:r:...:0 ==> 31:...:s-r:xxx:0. |
| 9802 | We want only bits s:xxx:r at the bottom of the word |
| 9803 | so we LSL bit s up to bit 31 i.e. by 31 - s |
| 9804 | and then we LSR to bring bit 31 down to bit s - r |
| 9805 | i.e. by 31 + r - s. */ |
| 9806 | value <<= 31 - s; |
| 9807 | value >>= 31 + r - s; |
| 9808 | } |
| 9809 | else |
| 9810 | { |
| 9811 | /* 31:...:s:xxx:0 ==> 31:...:31-(r-1)+s:xxx:31-(r-1):...:0 |
| 9812 | We want only bits s:xxx:0 starting at it 31-(r-1) |
| 9813 | so we LSL bit s up to bit 31 i.e. by 31 - s |
| 9814 | and then we LSL to bring bit 31 down to 31-(r-1)+s |
| 9815 | i.e. by r - (s + 1). */ |
| 9816 | value <<= 31 - s; |
| 9817 | value >>= r - (s + 1); |
| 9818 | } |
| 9819 | |
| 9820 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9821 | rd = INSTR (4, 0); |
| 9822 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value); |
| 9823 | } |
| 9824 | |
| 9825 | /* 64 bit bitfield move, left and right of affected zeroed |
| 9826 | if r <= s Wd<s-r:0> = Wn<s:r> else Wd<64+s-r,64-r> = Wn<s:0>. */ |
| 9827 | static void |
| 9828 | ubfm (sim_cpu *cpu, uint32_t r, uint32_t s) |
| 9829 | { |
| 9830 | unsigned rd; |
| 9831 | unsigned rn = INSTR (9, 5); |
| 9832 | uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 9833 | |
| 9834 | if (r <= s) |
| 9835 | { |
| 9836 | /* 63:...:s:xxx:r:...:0 ==> 63:...:s-r:xxx:0. |
| 9837 | We want only bits s:xxx:r at the bottom of the word. |
| 9838 | So we LSL bit s up to bit 63 i.e. by 63 - s |
| 9839 | and then we LSR to bring bit 63 down to bit s - r |
| 9840 | i.e. by 63 + r - s. */ |
| 9841 | value <<= 63 - s; |
| 9842 | value >>= 63 + r - s; |
| 9843 | } |
| 9844 | else |
| 9845 | { |
| 9846 | /* 63:...:s:xxx:0 ==> 63:...:63-(r-1)+s:xxx:63-(r-1):...:0. |
| 9847 | We want only bits s:xxx:0 starting at it 63-(r-1). |
| 9848 | So we LSL bit s up to bit 63 i.e. by 63 - s |
| 9849 | and then we LSL to bring bit 63 down to 63-(r-1)+s |
| 9850 | i.e. by r - (s + 1). */ |
| 9851 | value <<= 63 - s; |
| 9852 | value >>= r - (s + 1); |
| 9853 | } |
| 9854 | |
| 9855 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9856 | rd = INSTR (4, 0); |
| 9857 | aarch64_set_reg_u64 (cpu, rd, NO_SP, value); |
| 9858 | } |
| 9859 | |
| 9860 | /* The signed versions need to insert sign bits |
| 9861 | on the left of the inserted bit field. so we do |
| 9862 | much the same as the unsigned version except we |
| 9863 | use an arithmetic shift right -- this just means |
| 9864 | we need to operate on signed values. */ |
| 9865 | |
| 9866 | /* 32 bit bitfield move, left of affected sign-extended, right zeroed. */ |
| 9867 | /* If r <= s Wd<s-r:0> = Wn<s:r> else Wd<32+s-r,32-r> = Wn<s:0>. */ |
| 9868 | static void |
| 9869 | sbfm32 (sim_cpu *cpu, uint32_t r, uint32_t s) |
| 9870 | { |
| 9871 | unsigned rd; |
| 9872 | unsigned rn = INSTR (9, 5); |
| 9873 | /* as per ubfm32 but use an ASR instead of an LSR. */ |
| 9874 | int32_t value = aarch64_get_reg_s32 (cpu, rn, NO_SP); |
| 9875 | |
| 9876 | if (r <= s) |
| 9877 | { |
| 9878 | value <<= 31 - s; |
| 9879 | value >>= 31 + r - s; |
| 9880 | } |
| 9881 | else |
| 9882 | { |
| 9883 | value <<= 31 - s; |
| 9884 | value >>= r - (s + 1); |
| 9885 | } |
| 9886 | |
| 9887 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9888 | rd = INSTR (4, 0); |
| 9889 | aarch64_set_reg_u64 (cpu, rd, NO_SP, (uint32_t) value); |
| 9890 | } |
| 9891 | |
| 9892 | /* 64 bit bitfield move, left of affected sign-extended, right zeroed. */ |
| 9893 | /* If r <= s Wd<s-r:0> = Wn<s:r> else Wd<64+s-r,64-r> = Wn<s:0>. */ |
| 9894 | static void |
| 9895 | sbfm (sim_cpu *cpu, uint32_t r, uint32_t s) |
| 9896 | { |
| 9897 | unsigned rd; |
| 9898 | unsigned rn = INSTR (9, 5); |
| 9899 | /* acpu per ubfm but use an ASR instead of an LSR. */ |
| 9900 | int64_t value = aarch64_get_reg_s64 (cpu, rn, NO_SP); |
| 9901 | |
| 9902 | if (r <= s) |
| 9903 | { |
| 9904 | value <<= 63 - s; |
| 9905 | value >>= 63 + r - s; |
| 9906 | } |
| 9907 | else |
| 9908 | { |
| 9909 | value <<= 63 - s; |
| 9910 | value >>= r - (s + 1); |
| 9911 | } |
| 9912 | |
| 9913 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9914 | rd = INSTR (4, 0); |
| 9915 | aarch64_set_reg_s64 (cpu, rd, NO_SP, value); |
| 9916 | } |
| 9917 | |
| 9918 | /* Finally, these versions leave non-affected bits |
| 9919 | as is. so we need to generate the bits as per |
| 9920 | ubfm and also generate a mask to pick the |
| 9921 | bits from the original and computed values. */ |
| 9922 | |
| 9923 | /* 32 bit bitfield move, non-affected bits left as is. |
| 9924 | If r <= s Wd<s-r:0> = Wn<s:r> else Wd<32+s-r,32-r> = Wn<s:0>. */ |
| 9925 | static void |
| 9926 | bfm32 (sim_cpu *cpu, uint32_t r, uint32_t s) |
| 9927 | { |
| 9928 | unsigned rn = INSTR (9, 5); |
| 9929 | uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 9930 | uint32_t mask = -1; |
| 9931 | unsigned rd; |
| 9932 | uint32_t value2; |
| 9933 | |
| 9934 | /* Pick either s+1-r or s+1 consecutive bits out of the original word. */ |
| 9935 | if (r <= s) |
| 9936 | { |
| 9937 | /* 31:...:s:xxx:r:...:0 ==> 31:...:s-r:xxx:0. |
| 9938 | We want only bits s:xxx:r at the bottom of the word |
| 9939 | so we LSL bit s up to bit 31 i.e. by 31 - s |
| 9940 | and then we LSR to bring bit 31 down to bit s - r |
| 9941 | i.e. by 31 + r - s. */ |
| 9942 | value <<= 31 - s; |
| 9943 | value >>= 31 + r - s; |
| 9944 | /* the mask must include the same bits. */ |
| 9945 | mask <<= 31 - s; |
| 9946 | mask >>= 31 + r - s; |
| 9947 | } |
| 9948 | else |
| 9949 | { |
| 9950 | /* 31:...:s:xxx:0 ==> 31:...:31-(r-1)+s:xxx:31-(r-1):...:0. |
| 9951 | We want only bits s:xxx:0 starting at it 31-(r-1) |
| 9952 | so we LSL bit s up to bit 31 i.e. by 31 - s |
| 9953 | and then we LSL to bring bit 31 down to 31-(r-1)+s |
| 9954 | i.e. by r - (s + 1). */ |
| 9955 | value <<= 31 - s; |
| 9956 | value >>= r - (s + 1); |
| 9957 | /* The mask must include the same bits. */ |
| 9958 | mask <<= 31 - s; |
| 9959 | mask >>= r - (s + 1); |
| 9960 | } |
| 9961 | |
| 9962 | rd = INSTR (4, 0); |
| 9963 | value2 = aarch64_get_reg_u32 (cpu, rd, NO_SP); |
| 9964 | |
| 9965 | value2 &= ~mask; |
| 9966 | value2 |= value; |
| 9967 | |
| 9968 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 9969 | aarch64_set_reg_u64 |
| 9970 | (cpu, rd, NO_SP, (aarch64_get_reg_u32 (cpu, rd, NO_SP) & ~mask) | value); |
| 9971 | } |
| 9972 | |
| 9973 | /* 64 bit bitfield move, non-affected bits left as is. |
| 9974 | If r <= s Wd<s-r:0> = Wn<s:r> else Wd<64+s-r,64-r> = Wn<s:0>. */ |
| 9975 | static void |
| 9976 | bfm (sim_cpu *cpu, uint32_t r, uint32_t s) |
| 9977 | { |
| 9978 | unsigned rd; |
| 9979 | unsigned rn = INSTR (9, 5); |
| 9980 | uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 9981 | uint64_t mask = 0xffffffffffffffffULL; |
| 9982 | |
| 9983 | if (r <= s) |
| 9984 | { |
| 9985 | /* 63:...:s:xxx:r:...:0 ==> 63:...:s-r:xxx:0. |
| 9986 | We want only bits s:xxx:r at the bottom of the word |
| 9987 | so we LSL bit s up to bit 63 i.e. by 63 - s |
| 9988 | and then we LSR to bring bit 63 down to bit s - r |
| 9989 | i.e. by 63 + r - s. */ |
| 9990 | value <<= 63 - s; |
| 9991 | value >>= 63 + r - s; |
| 9992 | /* The mask must include the same bits. */ |
| 9993 | mask <<= 63 - s; |
| 9994 | mask >>= 63 + r - s; |
| 9995 | } |
| 9996 | else |
| 9997 | { |
| 9998 | /* 63:...:s:xxx:0 ==> 63:...:63-(r-1)+s:xxx:63-(r-1):...:0 |
| 9999 | We want only bits s:xxx:0 starting at it 63-(r-1) |
| 10000 | so we LSL bit s up to bit 63 i.e. by 63 - s |
| 10001 | and then we LSL to bring bit 63 down to 63-(r-1)+s |
| 10002 | i.e. by r - (s + 1). */ |
| 10003 | value <<= 63 - s; |
| 10004 | value >>= r - (s + 1); |
| 10005 | /* The mask must include the same bits. */ |
| 10006 | mask <<= 63 - s; |
| 10007 | mask >>= r - (s + 1); |
| 10008 | } |
| 10009 | |
| 10010 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 10011 | rd = INSTR (4, 0); |
| 10012 | aarch64_set_reg_u64 |
| 10013 | (cpu, rd, NO_SP, (aarch64_get_reg_u64 (cpu, rd, NO_SP) & ~mask) | value); |
| 10014 | } |
| 10015 | |
| 10016 | static void |
| 10017 | dexBitfieldImmediate (sim_cpu *cpu) |
| 10018 | { |
| 10019 | /* assert instr[28:23] = 100110 |
| 10020 | instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 10021 | instr[30,29] = op : 0 ==> SBFM, 1 ==> BFM, 2 ==> UBFM, 3 ==> UNALLOC |
| 10022 | instr[22] = N : must be 0 for 32 bit, 1 for 64 bit ow UNALLOC |
| 10023 | instr[21,16] = immr : 0xxxxx for 32 bit, xxxxxx for 64 bit |
| 10024 | instr[15,10] = imms : 0xxxxx for 32 bit, xxxxxx for 64 bit |
| 10025 | instr[9,5] = Rn |
| 10026 | instr[4,0] = Rd */ |
| 10027 | |
| 10028 | /* 32 bit operations must have N = 0 or else we have an UNALLOC. */ |
| 10029 | uint32_t dispatch; |
| 10030 | uint32_t imms; |
| 10031 | uint32_t size = INSTR (31, 31); |
| 10032 | uint32_t N = INSTR (22, 22); |
| 10033 | /* 32 bit operations must have immr[5] = 0 and imms[5] = 0. */ |
| 10034 | /* or else we have an UNALLOC. */ |
| 10035 | uint32_t immr = INSTR (21, 16); |
| 10036 | |
| 10037 | if (~size & N) |
| 10038 | HALT_UNALLOC; |
| 10039 | |
| 10040 | if (!size && uimm (immr, 5, 5)) |
| 10041 | HALT_UNALLOC; |
| 10042 | |
| 10043 | imms = INSTR (15, 10); |
| 10044 | if (!size && uimm (imms, 5, 5)) |
| 10045 | HALT_UNALLOC; |
| 10046 | |
| 10047 | /* Switch on combined size and op. */ |
| 10048 | dispatch = INSTR (31, 29); |
| 10049 | switch (dispatch) |
| 10050 | { |
| 10051 | case 0: sbfm32 (cpu, immr, imms); return; |
| 10052 | case 1: bfm32 (cpu, immr, imms); return; |
| 10053 | case 2: ubfm32 (cpu, immr, imms); return; |
| 10054 | case 4: sbfm (cpu, immr, imms); return; |
| 10055 | case 5: bfm (cpu, immr, imms); return; |
| 10056 | case 6: ubfm (cpu, immr, imms); return; |
| 10057 | default: HALT_UNALLOC; |
| 10058 | } |
| 10059 | } |
| 10060 | |
| 10061 | static void |
| 10062 | do_EXTR_32 (sim_cpu *cpu) |
| 10063 | { |
| 10064 | /* instr[31:21] = 00010011100 |
| 10065 | instr[20,16] = Rm |
| 10066 | instr[15,10] = imms : 0xxxxx for 32 bit |
| 10067 | instr[9,5] = Rn |
| 10068 | instr[4,0] = Rd */ |
| 10069 | unsigned rm = INSTR (20, 16); |
| 10070 | unsigned imms = INSTR (15, 10) & 31; |
| 10071 | unsigned rn = INSTR ( 9, 5); |
| 10072 | unsigned rd = INSTR ( 4, 0); |
| 10073 | uint64_t val1; |
| 10074 | uint64_t val2; |
| 10075 | |
| 10076 | val1 = aarch64_get_reg_u32 (cpu, rm, NO_SP); |
| 10077 | val1 >>= imms; |
| 10078 | val2 = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 10079 | val2 <<= (32 - imms); |
| 10080 | |
| 10081 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 10082 | aarch64_set_reg_u64 (cpu, rd, NO_SP, val1 | val2); |
| 10083 | } |
| 10084 | |
| 10085 | static void |
| 10086 | do_EXTR_64 (sim_cpu *cpu) |
| 10087 | { |
| 10088 | /* instr[31:21] = 10010011100 |
| 10089 | instr[20,16] = Rm |
| 10090 | instr[15,10] = imms |
| 10091 | instr[9,5] = Rn |
| 10092 | instr[4,0] = Rd */ |
| 10093 | unsigned rm = INSTR (20, 16); |
| 10094 | unsigned imms = INSTR (15, 10) & 63; |
| 10095 | unsigned rn = INSTR ( 9, 5); |
| 10096 | unsigned rd = INSTR ( 4, 0); |
| 10097 | uint64_t val; |
| 10098 | |
| 10099 | val = aarch64_get_reg_u64 (cpu, rm, NO_SP); |
| 10100 | val >>= imms; |
| 10101 | val |= (aarch64_get_reg_u64 (cpu, rn, NO_SP) << (64 - imms)); |
| 10102 | |
| 10103 | aarch64_set_reg_u64 (cpu, rd, NO_SP, val); |
| 10104 | } |
| 10105 | |
| 10106 | static void |
| 10107 | dexExtractImmediate (sim_cpu *cpu) |
| 10108 | { |
| 10109 | /* assert instr[28:23] = 100111 |
| 10110 | instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 10111 | instr[30,29] = op21 : 0 ==> EXTR, 1,2,3 ==> UNALLOC |
| 10112 | instr[22] = N : must be 0 for 32 bit, 1 for 64 bit or UNALLOC |
| 10113 | instr[21] = op0 : must be 0 or UNALLOC |
| 10114 | instr[20,16] = Rm |
| 10115 | instr[15,10] = imms : 0xxxxx for 32 bit, xxxxxx for 64 bit |
| 10116 | instr[9,5] = Rn |
| 10117 | instr[4,0] = Rd */ |
| 10118 | |
| 10119 | /* 32 bit operations must have N = 0 or else we have an UNALLOC. */ |
| 10120 | /* 64 bit operations must have N = 1 or else we have an UNALLOC. */ |
| 10121 | uint32_t dispatch; |
| 10122 | uint32_t size = INSTR (31, 31); |
| 10123 | uint32_t N = INSTR (22, 22); |
| 10124 | /* 32 bit operations must have imms[5] = 0 |
| 10125 | or else we have an UNALLOC. */ |
| 10126 | uint32_t imms = INSTR (15, 10); |
| 10127 | |
| 10128 | if (size ^ N) |
| 10129 | HALT_UNALLOC; |
| 10130 | |
| 10131 | if (!size && uimm (imms, 5, 5)) |
| 10132 | HALT_UNALLOC; |
| 10133 | |
| 10134 | /* Switch on combined size and op. */ |
| 10135 | dispatch = INSTR (31, 29); |
| 10136 | |
| 10137 | if (dispatch == 0) |
| 10138 | do_EXTR_32 (cpu); |
| 10139 | |
| 10140 | else if (dispatch == 4) |
| 10141 | do_EXTR_64 (cpu); |
| 10142 | |
| 10143 | else if (dispatch == 1) |
| 10144 | HALT_NYI; |
| 10145 | else |
| 10146 | HALT_UNALLOC; |
| 10147 | } |
| 10148 | |
| 10149 | static void |
| 10150 | dexDPImm (sim_cpu *cpu) |
| 10151 | { |
| 10152 | /* uint32_t group = dispatchGroup (aarch64_get_instr (cpu)); |
| 10153 | assert group == GROUP_DPIMM_1000 || grpoup == GROUP_DPIMM_1001 |
| 10154 | bits [25,23] of a DPImm are the secondary dispatch vector. */ |
| 10155 | uint32_t group2 = dispatchDPImm (aarch64_get_instr (cpu)); |
| 10156 | |
| 10157 | switch (group2) |
| 10158 | { |
| 10159 | case DPIMM_PCADR_000: |
| 10160 | case DPIMM_PCADR_001: |
| 10161 | dexPCRelAddressing (cpu); |
| 10162 | return; |
| 10163 | |
| 10164 | case DPIMM_ADDSUB_010: |
| 10165 | case DPIMM_ADDSUB_011: |
| 10166 | dexAddSubtractImmediate (cpu); |
| 10167 | return; |
| 10168 | |
| 10169 | case DPIMM_LOG_100: |
| 10170 | dexLogicalImmediate (cpu); |
| 10171 | return; |
| 10172 | |
| 10173 | case DPIMM_MOV_101: |
| 10174 | dexMoveWideImmediate (cpu); |
| 10175 | return; |
| 10176 | |
| 10177 | case DPIMM_BITF_110: |
| 10178 | dexBitfieldImmediate (cpu); |
| 10179 | return; |
| 10180 | |
| 10181 | case DPIMM_EXTR_111: |
| 10182 | dexExtractImmediate (cpu); |
| 10183 | return; |
| 10184 | |
| 10185 | default: |
| 10186 | /* Should never reach here. */ |
| 10187 | HALT_NYI; |
| 10188 | } |
| 10189 | } |
| 10190 | |
| 10191 | static void |
| 10192 | dexLoadUnscaledImmediate (sim_cpu *cpu) |
| 10193 | { |
| 10194 | /* instr[29,24] == 111_00 |
| 10195 | instr[21] == 0 |
| 10196 | instr[11,10] == 00 |
| 10197 | instr[31,30] = size |
| 10198 | instr[26] = V |
| 10199 | instr[23,22] = opc |
| 10200 | instr[20,12] = simm9 |
| 10201 | instr[9,5] = rn may be SP. */ |
| 10202 | /* unsigned rt = INSTR (4, 0); */ |
| 10203 | uint32_t V = INSTR (26, 26); |
| 10204 | uint32_t dispatch = ((INSTR (31, 30) << 2) | INSTR (23, 22)); |
| 10205 | int32_t imm = simm32 (aarch64_get_instr (cpu), 20, 12); |
| 10206 | |
| 10207 | if (!V) |
| 10208 | { |
| 10209 | /* GReg operations. */ |
| 10210 | switch (dispatch) |
| 10211 | { |
| 10212 | case 0: sturb (cpu, imm); return; |
| 10213 | case 1: ldurb32 (cpu, imm); return; |
| 10214 | case 2: ldursb64 (cpu, imm); return; |
| 10215 | case 3: ldursb32 (cpu, imm); return; |
| 10216 | case 4: sturh (cpu, imm); return; |
| 10217 | case 5: ldurh32 (cpu, imm); return; |
| 10218 | case 6: ldursh64 (cpu, imm); return; |
| 10219 | case 7: ldursh32 (cpu, imm); return; |
| 10220 | case 8: stur32 (cpu, imm); return; |
| 10221 | case 9: ldur32 (cpu, imm); return; |
| 10222 | case 10: ldursw (cpu, imm); return; |
| 10223 | case 12: stur64 (cpu, imm); return; |
| 10224 | case 13: ldur64 (cpu, imm); return; |
| 10225 | |
| 10226 | case 14: |
| 10227 | /* PRFUM NYI. */ |
| 10228 | HALT_NYI; |
| 10229 | |
| 10230 | default: |
| 10231 | case 11: |
| 10232 | case 15: |
| 10233 | HALT_UNALLOC; |
| 10234 | } |
| 10235 | } |
| 10236 | |
| 10237 | /* FReg operations. */ |
| 10238 | switch (dispatch) |
| 10239 | { |
| 10240 | case 2: fsturq (cpu, imm); return; |
| 10241 | case 3: fldurq (cpu, imm); return; |
| 10242 | case 8: fsturs (cpu, imm); return; |
| 10243 | case 9: fldurs (cpu, imm); return; |
| 10244 | case 12: fsturd (cpu, imm); return; |
| 10245 | case 13: fldurd (cpu, imm); return; |
| 10246 | |
| 10247 | case 0: /* STUR 8 bit FP. */ |
| 10248 | case 1: /* LDUR 8 bit FP. */ |
| 10249 | case 4: /* STUR 16 bit FP. */ |
| 10250 | case 5: /* LDUR 8 bit FP. */ |
| 10251 | HALT_NYI; |
| 10252 | |
| 10253 | default: |
| 10254 | case 6: |
| 10255 | case 7: |
| 10256 | case 10: |
| 10257 | case 11: |
| 10258 | case 14: |
| 10259 | case 15: |
| 10260 | HALT_UNALLOC; |
| 10261 | } |
| 10262 | } |
| 10263 | |
| 10264 | /* N.B. A preliminary note regarding all the ldrs<x>32 |
| 10265 | instructions |
| 10266 | |
| 10267 | The signed value loaded by these instructions is cast to unsigned |
| 10268 | before being assigned to aarch64_get_reg_u64 (cpu, N) i.e. to the |
| 10269 | 64 bit element of the GReg union. this performs a 32 bit sign extension |
| 10270 | (as required) but avoids 64 bit sign extension, thus ensuring that the |
| 10271 | top half of the register word is zero. this is what the spec demands |
| 10272 | when a 32 bit load occurs. */ |
| 10273 | |
| 10274 | /* 32 bit load sign-extended byte scaled unsigned 12 bit. */ |
| 10275 | static void |
| 10276 | ldrsb32_abs (sim_cpu *cpu, uint32_t offset) |
| 10277 | { |
| 10278 | unsigned int rn = INSTR (9, 5); |
| 10279 | unsigned int rt = INSTR (4, 0); |
| 10280 | |
| 10281 | /* The target register may not be SP but the source may be |
| 10282 | there is no scaling required for a byte load. */ |
| 10283 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset; |
| 10284 | aarch64_set_reg_u64 (cpu, rt, NO_SP, |
| 10285 | (int64_t) aarch64_get_mem_s8 (cpu, address)); |
| 10286 | } |
| 10287 | |
| 10288 | /* 32 bit load sign-extended byte scaled or unscaled zero- |
| 10289 | or sign-extended 32-bit register offset. */ |
| 10290 | static void |
| 10291 | ldrsb32_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 10292 | { |
| 10293 | unsigned int rm = INSTR (20, 16); |
| 10294 | unsigned int rn = INSTR (9, 5); |
| 10295 | unsigned int rt = INSTR (4, 0); |
| 10296 | |
| 10297 | /* rn may reference SP, rm and rt must reference ZR. */ |
| 10298 | |
| 10299 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10300 | int64_t displacement = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 10301 | extension); |
| 10302 | |
| 10303 | /* There is no scaling required for a byte load. */ |
| 10304 | aarch64_set_reg_u64 |
| 10305 | (cpu, rt, NO_SP, (int64_t) aarch64_get_mem_s8 (cpu, address |
| 10306 | + displacement)); |
| 10307 | } |
| 10308 | |
| 10309 | /* 32 bit load sign-extended byte unscaled signed 9 bit with |
| 10310 | pre- or post-writeback. */ |
| 10311 | static void |
| 10312 | ldrsb32_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 10313 | { |
| 10314 | uint64_t address; |
| 10315 | unsigned int rn = INSTR (9, 5); |
| 10316 | unsigned int rt = INSTR (4, 0); |
| 10317 | |
| 10318 | if (rn == rt && wb != NoWriteBack) |
| 10319 | HALT_UNALLOC; |
| 10320 | |
| 10321 | address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10322 | |
| 10323 | if (wb == Pre) |
| 10324 | address += offset; |
| 10325 | |
| 10326 | aarch64_set_reg_u64 (cpu, rt, NO_SP, |
| 10327 | (int64_t) aarch64_get_mem_s8 (cpu, address)); |
| 10328 | |
| 10329 | if (wb == Post) |
| 10330 | address += offset; |
| 10331 | |
| 10332 | if (wb != NoWriteBack) |
| 10333 | aarch64_set_reg_u64 (cpu, rn, NO_SP, address); |
| 10334 | } |
| 10335 | |
| 10336 | /* 8 bit store scaled. */ |
| 10337 | static void |
| 10338 | fstrb_abs (sim_cpu *cpu, uint32_t offset) |
| 10339 | { |
| 10340 | unsigned st = INSTR (4, 0); |
| 10341 | unsigned rn = INSTR (9, 5); |
| 10342 | |
| 10343 | aarch64_set_mem_u8 (cpu, |
| 10344 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + offset, |
| 10345 | aarch64_get_vec_u8 (cpu, st, 0)); |
| 10346 | } |
| 10347 | |
| 10348 | /* 8 bit store scaled or unscaled zero- or |
| 10349 | sign-extended 8-bit register offset. */ |
| 10350 | static void |
| 10351 | fstrb_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 10352 | { |
| 10353 | unsigned rm = INSTR (20, 16); |
| 10354 | unsigned rn = INSTR (9, 5); |
| 10355 | unsigned st = INSTR (4, 0); |
| 10356 | |
| 10357 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10358 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 10359 | extension); |
| 10360 | uint64_t displacement = scaling == Scaled ? extended : 0; |
| 10361 | |
| 10362 | aarch64_set_mem_u8 |
| 10363 | (cpu, address + displacement, aarch64_get_vec_u8 (cpu, st, 0)); |
| 10364 | } |
| 10365 | |
| 10366 | /* 16 bit store scaled. */ |
| 10367 | static void |
| 10368 | fstrh_abs (sim_cpu *cpu, uint32_t offset) |
| 10369 | { |
| 10370 | unsigned st = INSTR (4, 0); |
| 10371 | unsigned rn = INSTR (9, 5); |
| 10372 | |
| 10373 | aarch64_set_mem_u16 |
| 10374 | (cpu, |
| 10375 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 16), |
| 10376 | aarch64_get_vec_u16 (cpu, st, 0)); |
| 10377 | } |
| 10378 | |
| 10379 | /* 16 bit store scaled or unscaled zero- |
| 10380 | or sign-extended 16-bit register offset. */ |
| 10381 | static void |
| 10382 | fstrh_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 10383 | { |
| 10384 | unsigned rm = INSTR (20, 16); |
| 10385 | unsigned rn = INSTR (9, 5); |
| 10386 | unsigned st = INSTR (4, 0); |
| 10387 | |
| 10388 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10389 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 10390 | extension); |
| 10391 | uint64_t displacement = OPT_SCALE (extended, 16, scaling); |
| 10392 | |
| 10393 | aarch64_set_mem_u16 |
| 10394 | (cpu, address + displacement, aarch64_get_vec_u16 (cpu, st, 0)); |
| 10395 | } |
| 10396 | |
| 10397 | /* 32 bit store scaled unsigned 12 bit. */ |
| 10398 | static void |
| 10399 | fstrs_abs (sim_cpu *cpu, uint32_t offset) |
| 10400 | { |
| 10401 | unsigned st = INSTR (4, 0); |
| 10402 | unsigned rn = INSTR (9, 5); |
| 10403 | |
| 10404 | aarch64_set_mem_u32 |
| 10405 | (cpu, |
| 10406 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 32), |
| 10407 | aarch64_get_vec_u32 (cpu, st, 0)); |
| 10408 | } |
| 10409 | |
| 10410 | /* 32 bit store unscaled signed 9 bit with pre- or post-writeback. */ |
| 10411 | static void |
| 10412 | fstrs_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 10413 | { |
| 10414 | unsigned rn = INSTR (9, 5); |
| 10415 | unsigned st = INSTR (4, 0); |
| 10416 | |
| 10417 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10418 | |
| 10419 | if (wb != Post) |
| 10420 | address += offset; |
| 10421 | |
| 10422 | aarch64_set_mem_u32 (cpu, address, aarch64_get_vec_u32 (cpu, st, 0)); |
| 10423 | |
| 10424 | if (wb == Post) |
| 10425 | address += offset; |
| 10426 | |
| 10427 | if (wb != NoWriteBack) |
| 10428 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 10429 | } |
| 10430 | |
| 10431 | /* 32 bit store scaled or unscaled zero- |
| 10432 | or sign-extended 32-bit register offset. */ |
| 10433 | static void |
| 10434 | fstrs_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 10435 | { |
| 10436 | unsigned rm = INSTR (20, 16); |
| 10437 | unsigned rn = INSTR (9, 5); |
| 10438 | unsigned st = INSTR (4, 0); |
| 10439 | |
| 10440 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10441 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 10442 | extension); |
| 10443 | uint64_t displacement = OPT_SCALE (extended, 32, scaling); |
| 10444 | |
| 10445 | aarch64_set_mem_u32 |
| 10446 | (cpu, address + displacement, aarch64_get_vec_u32 (cpu, st, 0)); |
| 10447 | } |
| 10448 | |
| 10449 | /* 64 bit store scaled unsigned 12 bit. */ |
| 10450 | static void |
| 10451 | fstrd_abs (sim_cpu *cpu, uint32_t offset) |
| 10452 | { |
| 10453 | unsigned st = INSTR (4, 0); |
| 10454 | unsigned rn = INSTR (9, 5); |
| 10455 | |
| 10456 | aarch64_set_mem_u64 |
| 10457 | (cpu, |
| 10458 | aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 64), |
| 10459 | aarch64_get_vec_u64 (cpu, st, 0)); |
| 10460 | } |
| 10461 | |
| 10462 | /* 64 bit store unscaled signed 9 bit with pre- or post-writeback. */ |
| 10463 | static void |
| 10464 | fstrd_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 10465 | { |
| 10466 | unsigned rn = INSTR (9, 5); |
| 10467 | unsigned st = INSTR (4, 0); |
| 10468 | |
| 10469 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10470 | |
| 10471 | if (wb != Post) |
| 10472 | address += offset; |
| 10473 | |
| 10474 | aarch64_set_mem_u64 (cpu, address, aarch64_get_vec_u64 (cpu, st, 0)); |
| 10475 | |
| 10476 | if (wb == Post) |
| 10477 | address += offset; |
| 10478 | |
| 10479 | if (wb != NoWriteBack) |
| 10480 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 10481 | } |
| 10482 | |
| 10483 | /* 64 bit store scaled or unscaled zero- |
| 10484 | or sign-extended 32-bit register offset. */ |
| 10485 | static void |
| 10486 | fstrd_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 10487 | { |
| 10488 | unsigned rm = INSTR (20, 16); |
| 10489 | unsigned rn = INSTR (9, 5); |
| 10490 | unsigned st = INSTR (4, 0); |
| 10491 | |
| 10492 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10493 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 10494 | extension); |
| 10495 | uint64_t displacement = OPT_SCALE (extended, 64, scaling); |
| 10496 | |
| 10497 | aarch64_set_mem_u64 |
| 10498 | (cpu, address + displacement, aarch64_get_vec_u64 (cpu, st, 0)); |
| 10499 | } |
| 10500 | |
| 10501 | /* 128 bit store scaled unsigned 12 bit. */ |
| 10502 | static void |
| 10503 | fstrq_abs (sim_cpu *cpu, uint32_t offset) |
| 10504 | { |
| 10505 | FRegister a; |
| 10506 | unsigned st = INSTR (4, 0); |
| 10507 | unsigned rn = INSTR (9, 5); |
| 10508 | uint64_t addr; |
| 10509 | |
| 10510 | aarch64_get_FP_long_double (cpu, st, & a); |
| 10511 | |
| 10512 | addr = aarch64_get_reg_u64 (cpu, rn, SP_OK) + SCALE (offset, 128); |
| 10513 | aarch64_set_mem_long_double (cpu, addr, a); |
| 10514 | } |
| 10515 | |
| 10516 | /* 128 bit store unscaled signed 9 bit with pre- or post-writeback. */ |
| 10517 | static void |
| 10518 | fstrq_wb (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 10519 | { |
| 10520 | FRegister a; |
| 10521 | unsigned rn = INSTR (9, 5); |
| 10522 | unsigned st = INSTR (4, 0); |
| 10523 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10524 | |
| 10525 | if (wb != Post) |
| 10526 | address += offset; |
| 10527 | |
| 10528 | aarch64_get_FP_long_double (cpu, st, & a); |
| 10529 | aarch64_set_mem_long_double (cpu, address, a); |
| 10530 | |
| 10531 | if (wb == Post) |
| 10532 | address += offset; |
| 10533 | |
| 10534 | if (wb != NoWriteBack) |
| 10535 | aarch64_set_reg_u64 (cpu, rn, SP_OK, address); |
| 10536 | } |
| 10537 | |
| 10538 | /* 128 bit store scaled or unscaled zero- |
| 10539 | or sign-extended 32-bit register offset. */ |
| 10540 | static void |
| 10541 | fstrq_scale_ext (sim_cpu *cpu, Scaling scaling, Extension extension) |
| 10542 | { |
| 10543 | unsigned rm = INSTR (20, 16); |
| 10544 | unsigned rn = INSTR (9, 5); |
| 10545 | unsigned st = INSTR (4, 0); |
| 10546 | |
| 10547 | uint64_t address = aarch64_get_reg_u64 (cpu, rn, SP_OK); |
| 10548 | int64_t extended = extend (aarch64_get_reg_u32 (cpu, rm, NO_SP), |
| 10549 | extension); |
| 10550 | uint64_t displacement = OPT_SCALE (extended, 128, scaling); |
| 10551 | |
| 10552 | FRegister a; |
| 10553 | |
| 10554 | aarch64_get_FP_long_double (cpu, st, & a); |
| 10555 | aarch64_set_mem_long_double (cpu, address + displacement, a); |
| 10556 | } |
| 10557 | |
| 10558 | static void |
| 10559 | dexLoadImmediatePrePost (sim_cpu *cpu) |
| 10560 | { |
| 10561 | /* instr[31,30] = size |
| 10562 | instr[29,27] = 111 |
| 10563 | instr[26] = V |
| 10564 | instr[25,24] = 00 |
| 10565 | instr[23,22] = opc |
| 10566 | instr[21] = 0 |
| 10567 | instr[20,12] = simm9 |
| 10568 | instr[11] = wb : 0 ==> Post, 1 ==> Pre |
| 10569 | instr[10] = 0 |
| 10570 | instr[9,5] = Rn may be SP. |
| 10571 | instr[4,0] = Rt */ |
| 10572 | |
| 10573 | uint32_t V = INSTR (26, 26); |
| 10574 | uint32_t dispatch = ((INSTR (31, 30) << 2) | INSTR (23, 22)); |
| 10575 | int32_t imm = simm32 (aarch64_get_instr (cpu), 20, 12); |
| 10576 | WriteBack wb = INSTR (11, 11); |
| 10577 | |
| 10578 | if (!V) |
| 10579 | { |
| 10580 | /* GReg operations. */ |
| 10581 | switch (dispatch) |
| 10582 | { |
| 10583 | case 0: strb_wb (cpu, imm, wb); return; |
| 10584 | case 1: ldrb32_wb (cpu, imm, wb); return; |
| 10585 | case 2: ldrsb_wb (cpu, imm, wb); return; |
| 10586 | case 3: ldrsb32_wb (cpu, imm, wb); return; |
| 10587 | case 4: strh_wb (cpu, imm, wb); return; |
| 10588 | case 5: ldrh32_wb (cpu, imm, wb); return; |
| 10589 | case 6: ldrsh64_wb (cpu, imm, wb); return; |
| 10590 | case 7: ldrsh32_wb (cpu, imm, wb); return; |
| 10591 | case 8: str32_wb (cpu, imm, wb); return; |
| 10592 | case 9: ldr32_wb (cpu, imm, wb); return; |
| 10593 | case 10: ldrsw_wb (cpu, imm, wb); return; |
| 10594 | case 12: str_wb (cpu, imm, wb); return; |
| 10595 | case 13: ldr_wb (cpu, imm, wb); return; |
| 10596 | |
| 10597 | default: |
| 10598 | case 11: |
| 10599 | case 14: |
| 10600 | case 15: |
| 10601 | HALT_UNALLOC; |
| 10602 | } |
| 10603 | } |
| 10604 | |
| 10605 | /* FReg operations. */ |
| 10606 | switch (dispatch) |
| 10607 | { |
| 10608 | case 2: fstrq_wb (cpu, imm, wb); return; |
| 10609 | case 3: fldrq_wb (cpu, imm, wb); return; |
| 10610 | case 8: fstrs_wb (cpu, imm, wb); return; |
| 10611 | case 9: fldrs_wb (cpu, imm, wb); return; |
| 10612 | case 12: fstrd_wb (cpu, imm, wb); return; |
| 10613 | case 13: fldrd_wb (cpu, imm, wb); return; |
| 10614 | |
| 10615 | case 0: /* STUR 8 bit FP. */ |
| 10616 | case 1: /* LDUR 8 bit FP. */ |
| 10617 | case 4: /* STUR 16 bit FP. */ |
| 10618 | case 5: /* LDUR 8 bit FP. */ |
| 10619 | HALT_NYI; |
| 10620 | |
| 10621 | default: |
| 10622 | case 6: |
| 10623 | case 7: |
| 10624 | case 10: |
| 10625 | case 11: |
| 10626 | case 14: |
| 10627 | case 15: |
| 10628 | HALT_UNALLOC; |
| 10629 | } |
| 10630 | } |
| 10631 | |
| 10632 | static void |
| 10633 | dexLoadRegisterOffset (sim_cpu *cpu) |
| 10634 | { |
| 10635 | /* instr[31,30] = size |
| 10636 | instr[29,27] = 111 |
| 10637 | instr[26] = V |
| 10638 | instr[25,24] = 00 |
| 10639 | instr[23,22] = opc |
| 10640 | instr[21] = 1 |
| 10641 | instr[20,16] = rm |
| 10642 | instr[15,13] = option : 010 ==> UXTW, 011 ==> UXTX/LSL, |
| 10643 | 110 ==> SXTW, 111 ==> SXTX, |
| 10644 | ow ==> RESERVED |
| 10645 | instr[12] = scaled |
| 10646 | instr[11,10] = 10 |
| 10647 | instr[9,5] = rn |
| 10648 | instr[4,0] = rt. */ |
| 10649 | |
| 10650 | uint32_t V = INSTR (26, 26); |
| 10651 | uint32_t dispatch = ((INSTR (31, 30) << 2) | INSTR (23, 22)); |
| 10652 | Scaling scale = INSTR (12, 12); |
| 10653 | Extension extensionType = INSTR (15, 13); |
| 10654 | |
| 10655 | /* Check for illegal extension types. */ |
| 10656 | if (uimm (extensionType, 1, 1) == 0) |
| 10657 | HALT_UNALLOC; |
| 10658 | |
| 10659 | if (extensionType == UXTX || extensionType == SXTX) |
| 10660 | extensionType = NoExtension; |
| 10661 | |
| 10662 | if (!V) |
| 10663 | { |
| 10664 | /* GReg operations. */ |
| 10665 | switch (dispatch) |
| 10666 | { |
| 10667 | case 0: strb_scale_ext (cpu, scale, extensionType); return; |
| 10668 | case 1: ldrb32_scale_ext (cpu, scale, extensionType); return; |
| 10669 | case 2: ldrsb_scale_ext (cpu, scale, extensionType); return; |
| 10670 | case 3: ldrsb32_scale_ext (cpu, scale, extensionType); return; |
| 10671 | case 4: strh_scale_ext (cpu, scale, extensionType); return; |
| 10672 | case 5: ldrh32_scale_ext (cpu, scale, extensionType); return; |
| 10673 | case 6: ldrsh_scale_ext (cpu, scale, extensionType); return; |
| 10674 | case 7: ldrsh32_scale_ext (cpu, scale, extensionType); return; |
| 10675 | case 8: str32_scale_ext (cpu, scale, extensionType); return; |
| 10676 | case 9: ldr32_scale_ext (cpu, scale, extensionType); return; |
| 10677 | case 10: ldrsw_scale_ext (cpu, scale, extensionType); return; |
| 10678 | case 12: str_scale_ext (cpu, scale, extensionType); return; |
| 10679 | case 13: ldr_scale_ext (cpu, scale, extensionType); return; |
| 10680 | case 14: prfm_scale_ext (cpu, scale, extensionType); return; |
| 10681 | |
| 10682 | default: |
| 10683 | case 11: |
| 10684 | case 15: |
| 10685 | HALT_UNALLOC; |
| 10686 | } |
| 10687 | } |
| 10688 | |
| 10689 | /* FReg operations. */ |
| 10690 | switch (dispatch) |
| 10691 | { |
| 10692 | case 1: /* LDUR 8 bit FP. */ |
| 10693 | HALT_NYI; |
| 10694 | case 3: fldrq_scale_ext (cpu, scale, extensionType); return; |
| 10695 | case 5: /* LDUR 8 bit FP. */ |
| 10696 | HALT_NYI; |
| 10697 | case 9: fldrs_scale_ext (cpu, scale, extensionType); return; |
| 10698 | case 13: fldrd_scale_ext (cpu, scale, extensionType); return; |
| 10699 | |
| 10700 | case 0: fstrb_scale_ext (cpu, scale, extensionType); return; |
| 10701 | case 2: fstrq_scale_ext (cpu, scale, extensionType); return; |
| 10702 | case 4: fstrh_scale_ext (cpu, scale, extensionType); return; |
| 10703 | case 8: fstrs_scale_ext (cpu, scale, extensionType); return; |
| 10704 | case 12: fstrd_scale_ext (cpu, scale, extensionType); return; |
| 10705 | |
| 10706 | default: |
| 10707 | case 6: |
| 10708 | case 7: |
| 10709 | case 10: |
| 10710 | case 11: |
| 10711 | case 14: |
| 10712 | case 15: |
| 10713 | HALT_UNALLOC; |
| 10714 | } |
| 10715 | } |
| 10716 | |
| 10717 | static void |
| 10718 | dexLoadUnsignedImmediate (sim_cpu *cpu) |
| 10719 | { |
| 10720 | /* instr[29,24] == 111_01 |
| 10721 | instr[31,30] = size |
| 10722 | instr[26] = V |
| 10723 | instr[23,22] = opc |
| 10724 | instr[21,10] = uimm12 : unsigned immediate offset |
| 10725 | instr[9,5] = rn may be SP. |
| 10726 | instr[4,0] = rt. */ |
| 10727 | |
| 10728 | uint32_t V = INSTR (26,26); |
| 10729 | uint32_t dispatch = ((INSTR (31, 30) << 2) | INSTR (23, 22)); |
| 10730 | uint32_t imm = INSTR (21, 10); |
| 10731 | |
| 10732 | if (!V) |
| 10733 | { |
| 10734 | /* GReg operations. */ |
| 10735 | switch (dispatch) |
| 10736 | { |
| 10737 | case 0: strb_abs (cpu, imm); return; |
| 10738 | case 1: ldrb32_abs (cpu, imm); return; |
| 10739 | case 2: ldrsb_abs (cpu, imm); return; |
| 10740 | case 3: ldrsb32_abs (cpu, imm); return; |
| 10741 | case 4: strh_abs (cpu, imm); return; |
| 10742 | case 5: ldrh32_abs (cpu, imm); return; |
| 10743 | case 6: ldrsh_abs (cpu, imm); return; |
| 10744 | case 7: ldrsh32_abs (cpu, imm); return; |
| 10745 | case 8: str32_abs (cpu, imm); return; |
| 10746 | case 9: ldr32_abs (cpu, imm); return; |
| 10747 | case 10: ldrsw_abs (cpu, imm); return; |
| 10748 | case 12: str_abs (cpu, imm); return; |
| 10749 | case 13: ldr_abs (cpu, imm); return; |
| 10750 | case 14: prfm_abs (cpu, imm); return; |
| 10751 | |
| 10752 | default: |
| 10753 | case 11: |
| 10754 | case 15: |
| 10755 | HALT_UNALLOC; |
| 10756 | } |
| 10757 | } |
| 10758 | |
| 10759 | /* FReg operations. */ |
| 10760 | switch (dispatch) |
| 10761 | { |
| 10762 | case 0: fstrb_abs (cpu, imm); return; |
| 10763 | case 4: fstrh_abs (cpu, imm); return; |
| 10764 | case 8: fstrs_abs (cpu, imm); return; |
| 10765 | case 12: fstrd_abs (cpu, imm); return; |
| 10766 | case 2: fstrq_abs (cpu, imm); return; |
| 10767 | |
| 10768 | case 1: fldrb_abs (cpu, imm); return; |
| 10769 | case 5: fldrh_abs (cpu, imm); return; |
| 10770 | case 9: fldrs_abs (cpu, imm); return; |
| 10771 | case 13: fldrd_abs (cpu, imm); return; |
| 10772 | case 3: fldrq_abs (cpu, imm); return; |
| 10773 | |
| 10774 | default: |
| 10775 | case 6: |
| 10776 | case 7: |
| 10777 | case 10: |
| 10778 | case 11: |
| 10779 | case 14: |
| 10780 | case 15: |
| 10781 | HALT_UNALLOC; |
| 10782 | } |
| 10783 | } |
| 10784 | |
| 10785 | static void |
| 10786 | dexLoadExclusive (sim_cpu *cpu) |
| 10787 | { |
| 10788 | /* assert instr[29:24] = 001000; |
| 10789 | instr[31,30] = size |
| 10790 | instr[23] = 0 if exclusive |
| 10791 | instr[22] = L : 1 if load, 0 if store |
| 10792 | instr[21] = 1 if pair |
| 10793 | instr[20,16] = Rs |
| 10794 | instr[15] = o0 : 1 if ordered |
| 10795 | instr[14,10] = Rt2 |
| 10796 | instr[9,5] = Rn |
| 10797 | instr[4.0] = Rt. */ |
| 10798 | |
| 10799 | switch (INSTR (22, 21)) |
| 10800 | { |
| 10801 | case 2: ldxr (cpu); return; |
| 10802 | case 0: stxr (cpu); return; |
| 10803 | default: HALT_NYI; |
| 10804 | } |
| 10805 | } |
| 10806 | |
| 10807 | static void |
| 10808 | dexLoadOther (sim_cpu *cpu) |
| 10809 | { |
| 10810 | uint32_t dispatch; |
| 10811 | |
| 10812 | /* instr[29,25] = 111_0 |
| 10813 | instr[24] == 0 ==> dispatch, 1 ==> ldst reg unsigned immediate |
| 10814 | instr[21:11,10] is the secondary dispatch. */ |
| 10815 | if (INSTR (24, 24)) |
| 10816 | { |
| 10817 | dexLoadUnsignedImmediate (cpu); |
| 10818 | return; |
| 10819 | } |
| 10820 | |
| 10821 | dispatch = ((INSTR (21, 21) << 2) | INSTR (11, 10)); |
| 10822 | switch (dispatch) |
| 10823 | { |
| 10824 | case 0: dexLoadUnscaledImmediate (cpu); return; |
| 10825 | case 1: dexLoadImmediatePrePost (cpu); return; |
| 10826 | case 3: dexLoadImmediatePrePost (cpu); return; |
| 10827 | case 6: dexLoadRegisterOffset (cpu); return; |
| 10828 | |
| 10829 | default: |
| 10830 | case 2: |
| 10831 | case 4: |
| 10832 | case 5: |
| 10833 | case 7: |
| 10834 | HALT_NYI; |
| 10835 | } |
| 10836 | } |
| 10837 | |
| 10838 | static void |
| 10839 | store_pair_u32 (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 10840 | { |
| 10841 | unsigned rn = INSTR (14, 10); |
| 10842 | unsigned rd = INSTR (9, 5); |
| 10843 | unsigned rm = INSTR (4, 0); |
| 10844 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 10845 | |
| 10846 | if ((rn == rd || rm == rd) && wb != NoWriteBack) |
| 10847 | HALT_UNALLOC; /* ??? */ |
| 10848 | |
| 10849 | offset <<= 2; |
| 10850 | |
| 10851 | if (wb != Post) |
| 10852 | address += offset; |
| 10853 | |
| 10854 | aarch64_set_mem_u32 (cpu, address, |
| 10855 | aarch64_get_reg_u32 (cpu, rm, NO_SP)); |
| 10856 | aarch64_set_mem_u32 (cpu, address + 4, |
| 10857 | aarch64_get_reg_u32 (cpu, rn, NO_SP)); |
| 10858 | |
| 10859 | if (wb == Post) |
| 10860 | address += offset; |
| 10861 | |
| 10862 | if (wb != NoWriteBack) |
| 10863 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 10864 | } |
| 10865 | |
| 10866 | static void |
| 10867 | store_pair_u64 (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 10868 | { |
| 10869 | unsigned rn = INSTR (14, 10); |
| 10870 | unsigned rd = INSTR (9, 5); |
| 10871 | unsigned rm = INSTR (4, 0); |
| 10872 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 10873 | |
| 10874 | if ((rn == rd || rm == rd) && wb != NoWriteBack) |
| 10875 | HALT_UNALLOC; /* ??? */ |
| 10876 | |
| 10877 | offset <<= 3; |
| 10878 | |
| 10879 | if (wb != Post) |
| 10880 | address += offset; |
| 10881 | |
| 10882 | aarch64_set_mem_u64 (cpu, address, |
| 10883 | aarch64_get_reg_u64 (cpu, rm, NO_SP)); |
| 10884 | aarch64_set_mem_u64 (cpu, address + 8, |
| 10885 | aarch64_get_reg_u64 (cpu, rn, NO_SP)); |
| 10886 | |
| 10887 | if (wb == Post) |
| 10888 | address += offset; |
| 10889 | |
| 10890 | if (wb != NoWriteBack) |
| 10891 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 10892 | } |
| 10893 | |
| 10894 | static void |
| 10895 | load_pair_u32 (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 10896 | { |
| 10897 | unsigned rn = INSTR (14, 10); |
| 10898 | unsigned rd = INSTR (9, 5); |
| 10899 | unsigned rm = INSTR (4, 0); |
| 10900 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 10901 | |
| 10902 | /* Treat this as unalloc to make sure we don't do it. */ |
| 10903 | if (rn == rm) |
| 10904 | HALT_UNALLOC; |
| 10905 | |
| 10906 | offset <<= 2; |
| 10907 | |
| 10908 | if (wb != Post) |
| 10909 | address += offset; |
| 10910 | |
| 10911 | aarch64_set_reg_u64 (cpu, rm, SP_OK, aarch64_get_mem_u32 (cpu, address)); |
| 10912 | aarch64_set_reg_u64 (cpu, rn, SP_OK, aarch64_get_mem_u32 (cpu, address + 4)); |
| 10913 | |
| 10914 | if (wb == Post) |
| 10915 | address += offset; |
| 10916 | |
| 10917 | if (wb != NoWriteBack) |
| 10918 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 10919 | } |
| 10920 | |
| 10921 | static void |
| 10922 | load_pair_s32 (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 10923 | { |
| 10924 | unsigned rn = INSTR (14, 10); |
| 10925 | unsigned rd = INSTR (9, 5); |
| 10926 | unsigned rm = INSTR (4, 0); |
| 10927 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 10928 | |
| 10929 | /* Treat this as unalloc to make sure we don't do it. */ |
| 10930 | if (rn == rm) |
| 10931 | HALT_UNALLOC; |
| 10932 | |
| 10933 | offset <<= 2; |
| 10934 | |
| 10935 | if (wb != Post) |
| 10936 | address += offset; |
| 10937 | |
| 10938 | aarch64_set_reg_s64 (cpu, rm, SP_OK, aarch64_get_mem_s32 (cpu, address)); |
| 10939 | aarch64_set_reg_s64 (cpu, rn, SP_OK, aarch64_get_mem_s32 (cpu, address + 4)); |
| 10940 | |
| 10941 | if (wb == Post) |
| 10942 | address += offset; |
| 10943 | |
| 10944 | if (wb != NoWriteBack) |
| 10945 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 10946 | } |
| 10947 | |
| 10948 | static void |
| 10949 | load_pair_u64 (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 10950 | { |
| 10951 | unsigned rn = INSTR (14, 10); |
| 10952 | unsigned rd = INSTR (9, 5); |
| 10953 | unsigned rm = INSTR (4, 0); |
| 10954 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 10955 | |
| 10956 | /* Treat this as unalloc to make sure we don't do it. */ |
| 10957 | if (rn == rm) |
| 10958 | HALT_UNALLOC; |
| 10959 | |
| 10960 | offset <<= 3; |
| 10961 | |
| 10962 | if (wb != Post) |
| 10963 | address += offset; |
| 10964 | |
| 10965 | aarch64_set_reg_u64 (cpu, rm, SP_OK, aarch64_get_mem_u64 (cpu, address)); |
| 10966 | aarch64_set_reg_u64 (cpu, rn, SP_OK, aarch64_get_mem_u64 (cpu, address + 8)); |
| 10967 | |
| 10968 | if (wb == Post) |
| 10969 | address += offset; |
| 10970 | |
| 10971 | if (wb != NoWriteBack) |
| 10972 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 10973 | } |
| 10974 | |
| 10975 | static void |
| 10976 | dex_load_store_pair_gr (sim_cpu *cpu) |
| 10977 | { |
| 10978 | /* instr[31,30] = size (10=> 64-bit, 01=> signed 32-bit, 00=> 32-bit) |
| 10979 | instr[29,25] = instruction encoding: 101_0 |
| 10980 | instr[26] = V : 1 if fp 0 if gp |
| 10981 | instr[24,23] = addressing mode (10=> offset, 01=> post, 11=> pre) |
| 10982 | instr[22] = load/store (1=> load) |
| 10983 | instr[21,15] = signed, scaled, offset |
| 10984 | instr[14,10] = Rn |
| 10985 | instr[ 9, 5] = Rd |
| 10986 | instr[ 4, 0] = Rm. */ |
| 10987 | |
| 10988 | uint32_t dispatch = ((INSTR (31, 30) << 3) | INSTR (24, 22)); |
| 10989 | int32_t offset = simm32 (aarch64_get_instr (cpu), 21, 15); |
| 10990 | |
| 10991 | switch (dispatch) |
| 10992 | { |
| 10993 | case 2: store_pair_u32 (cpu, offset, Post); return; |
| 10994 | case 3: load_pair_u32 (cpu, offset, Post); return; |
| 10995 | case 4: store_pair_u32 (cpu, offset, NoWriteBack); return; |
| 10996 | case 5: load_pair_u32 (cpu, offset, NoWriteBack); return; |
| 10997 | case 6: store_pair_u32 (cpu, offset, Pre); return; |
| 10998 | case 7: load_pair_u32 (cpu, offset, Pre); return; |
| 10999 | |
| 11000 | case 11: load_pair_s32 (cpu, offset, Post); return; |
| 11001 | case 13: load_pair_s32 (cpu, offset, NoWriteBack); return; |
| 11002 | case 15: load_pair_s32 (cpu, offset, Pre); return; |
| 11003 | |
| 11004 | case 18: store_pair_u64 (cpu, offset, Post); return; |
| 11005 | case 19: load_pair_u64 (cpu, offset, Post); return; |
| 11006 | case 20: store_pair_u64 (cpu, offset, NoWriteBack); return; |
| 11007 | case 21: load_pair_u64 (cpu, offset, NoWriteBack); return; |
| 11008 | case 22: store_pair_u64 (cpu, offset, Pre); return; |
| 11009 | case 23: load_pair_u64 (cpu, offset, Pre); return; |
| 11010 | |
| 11011 | default: |
| 11012 | HALT_UNALLOC; |
| 11013 | } |
| 11014 | } |
| 11015 | |
| 11016 | static void |
| 11017 | store_pair_float (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 11018 | { |
| 11019 | unsigned rn = INSTR (14, 10); |
| 11020 | unsigned rd = INSTR (9, 5); |
| 11021 | unsigned rm = INSTR (4, 0); |
| 11022 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 11023 | |
| 11024 | offset <<= 2; |
| 11025 | |
| 11026 | if (wb != Post) |
| 11027 | address += offset; |
| 11028 | |
| 11029 | aarch64_set_mem_u32 (cpu, address, aarch64_get_vec_u32 (cpu, rm, 0)); |
| 11030 | aarch64_set_mem_u32 (cpu, address + 4, aarch64_get_vec_u32 (cpu, rn, 0)); |
| 11031 | |
| 11032 | if (wb == Post) |
| 11033 | address += offset; |
| 11034 | |
| 11035 | if (wb != NoWriteBack) |
| 11036 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 11037 | } |
| 11038 | |
| 11039 | static void |
| 11040 | store_pair_double (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 11041 | { |
| 11042 | unsigned rn = INSTR (14, 10); |
| 11043 | unsigned rd = INSTR (9, 5); |
| 11044 | unsigned rm = INSTR (4, 0); |
| 11045 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 11046 | |
| 11047 | offset <<= 3; |
| 11048 | |
| 11049 | if (wb != Post) |
| 11050 | address += offset; |
| 11051 | |
| 11052 | aarch64_set_mem_u64 (cpu, address, aarch64_get_vec_u64 (cpu, rm, 0)); |
| 11053 | aarch64_set_mem_u64 (cpu, address + 8, aarch64_get_vec_u64 (cpu, rn, 0)); |
| 11054 | |
| 11055 | if (wb == Post) |
| 11056 | address += offset; |
| 11057 | |
| 11058 | if (wb != NoWriteBack) |
| 11059 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 11060 | } |
| 11061 | |
| 11062 | static void |
| 11063 | store_pair_long_double (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 11064 | { |
| 11065 | FRegister a; |
| 11066 | unsigned rn = INSTR (14, 10); |
| 11067 | unsigned rd = INSTR (9, 5); |
| 11068 | unsigned rm = INSTR (4, 0); |
| 11069 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 11070 | |
| 11071 | offset <<= 4; |
| 11072 | |
| 11073 | if (wb != Post) |
| 11074 | address += offset; |
| 11075 | |
| 11076 | aarch64_get_FP_long_double (cpu, rm, & a); |
| 11077 | aarch64_set_mem_long_double (cpu, address, a); |
| 11078 | aarch64_get_FP_long_double (cpu, rn, & a); |
| 11079 | aarch64_set_mem_long_double (cpu, address + 16, a); |
| 11080 | |
| 11081 | if (wb == Post) |
| 11082 | address += offset; |
| 11083 | |
| 11084 | if (wb != NoWriteBack) |
| 11085 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 11086 | } |
| 11087 | |
| 11088 | static void |
| 11089 | load_pair_float (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 11090 | { |
| 11091 | unsigned rn = INSTR (14, 10); |
| 11092 | unsigned rd = INSTR (9, 5); |
| 11093 | unsigned rm = INSTR (4, 0); |
| 11094 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 11095 | |
| 11096 | if (rm == rn) |
| 11097 | HALT_UNALLOC; |
| 11098 | |
| 11099 | offset <<= 2; |
| 11100 | |
| 11101 | if (wb != Post) |
| 11102 | address += offset; |
| 11103 | |
| 11104 | aarch64_set_vec_u32 (cpu, rm, 0, aarch64_get_mem_u32 (cpu, address)); |
| 11105 | aarch64_set_vec_u32 (cpu, rn, 0, aarch64_get_mem_u32 (cpu, address + 4)); |
| 11106 | |
| 11107 | if (wb == Post) |
| 11108 | address += offset; |
| 11109 | |
| 11110 | if (wb != NoWriteBack) |
| 11111 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 11112 | } |
| 11113 | |
| 11114 | static void |
| 11115 | load_pair_double (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 11116 | { |
| 11117 | unsigned rn = INSTR (14, 10); |
| 11118 | unsigned rd = INSTR (9, 5); |
| 11119 | unsigned rm = INSTR (4, 0); |
| 11120 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 11121 | |
| 11122 | if (rm == rn) |
| 11123 | HALT_UNALLOC; |
| 11124 | |
| 11125 | offset <<= 3; |
| 11126 | |
| 11127 | if (wb != Post) |
| 11128 | address += offset; |
| 11129 | |
| 11130 | aarch64_set_vec_u64 (cpu, rm, 0, aarch64_get_mem_u64 (cpu, address)); |
| 11131 | aarch64_set_vec_u64 (cpu, rn, 0, aarch64_get_mem_u64 (cpu, address + 8)); |
| 11132 | |
| 11133 | if (wb == Post) |
| 11134 | address += offset; |
| 11135 | |
| 11136 | if (wb != NoWriteBack) |
| 11137 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 11138 | } |
| 11139 | |
| 11140 | static void |
| 11141 | load_pair_long_double (sim_cpu *cpu, int32_t offset, WriteBack wb) |
| 11142 | { |
| 11143 | FRegister a; |
| 11144 | unsigned rn = INSTR (14, 10); |
| 11145 | unsigned rd = INSTR (9, 5); |
| 11146 | unsigned rm = INSTR (4, 0); |
| 11147 | uint64_t address = aarch64_get_reg_u64 (cpu, rd, SP_OK); |
| 11148 | |
| 11149 | if (rm == rn) |
| 11150 | HALT_UNALLOC; |
| 11151 | |
| 11152 | offset <<= 4; |
| 11153 | |
| 11154 | if (wb != Post) |
| 11155 | address += offset; |
| 11156 | |
| 11157 | aarch64_get_mem_long_double (cpu, address, & a); |
| 11158 | aarch64_set_FP_long_double (cpu, rm, a); |
| 11159 | aarch64_get_mem_long_double (cpu, address + 16, & a); |
| 11160 | aarch64_set_FP_long_double (cpu, rn, a); |
| 11161 | |
| 11162 | if (wb == Post) |
| 11163 | address += offset; |
| 11164 | |
| 11165 | if (wb != NoWriteBack) |
| 11166 | aarch64_set_reg_u64 (cpu, rd, SP_OK, address); |
| 11167 | } |
| 11168 | |
| 11169 | static void |
| 11170 | dex_load_store_pair_fp (sim_cpu *cpu) |
| 11171 | { |
| 11172 | /* instr[31,30] = size (10=> 128-bit, 01=> 64-bit, 00=> 32-bit) |
| 11173 | instr[29,25] = instruction encoding |
| 11174 | instr[24,23] = addressing mode (10=> offset, 01=> post, 11=> pre) |
| 11175 | instr[22] = load/store (1=> load) |
| 11176 | instr[21,15] = signed, scaled, offset |
| 11177 | instr[14,10] = Rn |
| 11178 | instr[ 9, 5] = Rd |
| 11179 | instr[ 4, 0] = Rm */ |
| 11180 | |
| 11181 | uint32_t dispatch = ((INSTR (31, 30) << 3) | INSTR (24, 22)); |
| 11182 | int32_t offset = simm32 (aarch64_get_instr (cpu), 21, 15); |
| 11183 | |
| 11184 | switch (dispatch) |
| 11185 | { |
| 11186 | case 2: store_pair_float (cpu, offset, Post); return; |
| 11187 | case 3: load_pair_float (cpu, offset, Post); return; |
| 11188 | case 4: store_pair_float (cpu, offset, NoWriteBack); return; |
| 11189 | case 5: load_pair_float (cpu, offset, NoWriteBack); return; |
| 11190 | case 6: store_pair_float (cpu, offset, Pre); return; |
| 11191 | case 7: load_pair_float (cpu, offset, Pre); return; |
| 11192 | |
| 11193 | case 10: store_pair_double (cpu, offset, Post); return; |
| 11194 | case 11: load_pair_double (cpu, offset, Post); return; |
| 11195 | case 12: store_pair_double (cpu, offset, NoWriteBack); return; |
| 11196 | case 13: load_pair_double (cpu, offset, NoWriteBack); return; |
| 11197 | case 14: store_pair_double (cpu, offset, Pre); return; |
| 11198 | case 15: load_pair_double (cpu, offset, Pre); return; |
| 11199 | |
| 11200 | case 18: store_pair_long_double (cpu, offset, Post); return; |
| 11201 | case 19: load_pair_long_double (cpu, offset, Post); return; |
| 11202 | case 20: store_pair_long_double (cpu, offset, NoWriteBack); return; |
| 11203 | case 21: load_pair_long_double (cpu, offset, NoWriteBack); return; |
| 11204 | case 22: store_pair_long_double (cpu, offset, Pre); return; |
| 11205 | case 23: load_pair_long_double (cpu, offset, Pre); return; |
| 11206 | |
| 11207 | default: |
| 11208 | HALT_UNALLOC; |
| 11209 | } |
| 11210 | } |
| 11211 | |
| 11212 | static inline unsigned |
| 11213 | vec_reg (unsigned v, unsigned o) |
| 11214 | { |
| 11215 | return (v + o) & 0x3F; |
| 11216 | } |
| 11217 | |
| 11218 | /* Load multiple N-element structures to N consecutive registers. */ |
| 11219 | static void |
| 11220 | vec_load (sim_cpu *cpu, uint64_t address, unsigned N) |
| 11221 | { |
| 11222 | int all = INSTR (30, 30); |
| 11223 | unsigned size = INSTR (11, 10); |
| 11224 | unsigned vd = INSTR (4, 0); |
| 11225 | unsigned i; |
| 11226 | |
| 11227 | switch (size) |
| 11228 | { |
| 11229 | case 0: /* 8-bit operations. */ |
| 11230 | if (all) |
| 11231 | for (i = 0; i < (16 * N); i++) |
| 11232 | aarch64_set_vec_u8 (cpu, vec_reg (vd, i >> 4), i & 15, |
| 11233 | aarch64_get_mem_u8 (cpu, address + i)); |
| 11234 | else |
| 11235 | for (i = 0; i < (8 * N); i++) |
| 11236 | aarch64_set_vec_u8 (cpu, vec_reg (vd, i >> 3), i & 7, |
| 11237 | aarch64_get_mem_u8 (cpu, address + i)); |
| 11238 | return; |
| 11239 | |
| 11240 | case 1: /* 16-bit operations. */ |
| 11241 | if (all) |
| 11242 | for (i = 0; i < (8 * N); i++) |
| 11243 | aarch64_set_vec_u16 (cpu, vec_reg (vd, i >> 3), i & 7, |
| 11244 | aarch64_get_mem_u16 (cpu, address + i * 2)); |
| 11245 | else |
| 11246 | for (i = 0; i < (4 * N); i++) |
| 11247 | aarch64_set_vec_u16 (cpu, vec_reg (vd, i >> 2), i & 3, |
| 11248 | aarch64_get_mem_u16 (cpu, address + i * 2)); |
| 11249 | return; |
| 11250 | |
| 11251 | case 2: /* 32-bit operations. */ |
| 11252 | if (all) |
| 11253 | for (i = 0; i < (4 * N); i++) |
| 11254 | aarch64_set_vec_u32 (cpu, vec_reg (vd, i >> 2), i & 3, |
| 11255 | aarch64_get_mem_u32 (cpu, address + i * 4)); |
| 11256 | else |
| 11257 | for (i = 0; i < (2 * N); i++) |
| 11258 | aarch64_set_vec_u32 (cpu, vec_reg (vd, i >> 1), i & 1, |
| 11259 | aarch64_get_mem_u32 (cpu, address + i * 4)); |
| 11260 | return; |
| 11261 | |
| 11262 | case 3: /* 64-bit operations. */ |
| 11263 | if (all) |
| 11264 | for (i = 0; i < (2 * N); i++) |
| 11265 | aarch64_set_vec_u64 (cpu, vec_reg (vd, i >> 1), i & 1, |
| 11266 | aarch64_get_mem_u64 (cpu, address + i * 8)); |
| 11267 | else |
| 11268 | for (i = 0; i < N; i++) |
| 11269 | aarch64_set_vec_u64 (cpu, vec_reg (vd, i), 0, |
| 11270 | aarch64_get_mem_u64 (cpu, address + i * 8)); |
| 11271 | return; |
| 11272 | } |
| 11273 | } |
| 11274 | |
| 11275 | /* LD4: load multiple 4-element to four consecutive registers. */ |
| 11276 | static void |
| 11277 | LD4 (sim_cpu *cpu, uint64_t address) |
| 11278 | { |
| 11279 | vec_load (cpu, address, 4); |
| 11280 | } |
| 11281 | |
| 11282 | /* LD3: load multiple 3-element structures to three consecutive registers. */ |
| 11283 | static void |
| 11284 | LD3 (sim_cpu *cpu, uint64_t address) |
| 11285 | { |
| 11286 | vec_load (cpu, address, 3); |
| 11287 | } |
| 11288 | |
| 11289 | /* LD2: load multiple 2-element structures to two consecutive registers. */ |
| 11290 | static void |
| 11291 | LD2 (sim_cpu *cpu, uint64_t address) |
| 11292 | { |
| 11293 | vec_load (cpu, address, 2); |
| 11294 | } |
| 11295 | |
| 11296 | /* Load multiple 1-element structures into one register. */ |
| 11297 | static void |
| 11298 | LD1_1 (sim_cpu *cpu, uint64_t address) |
| 11299 | { |
| 11300 | int all = INSTR (30, 30); |
| 11301 | unsigned size = INSTR (11, 10); |
| 11302 | unsigned vd = INSTR (4, 0); |
| 11303 | unsigned i; |
| 11304 | |
| 11305 | switch (size) |
| 11306 | { |
| 11307 | case 0: |
| 11308 | /* LD1 {Vd.16b}, addr, #16 */ |
| 11309 | /* LD1 {Vd.8b}, addr, #8 */ |
| 11310 | for (i = 0; i < (all ? 16 : 8); i++) |
| 11311 | aarch64_set_vec_u8 (cpu, vd, i, |
| 11312 | aarch64_get_mem_u8 (cpu, address + i)); |
| 11313 | return; |
| 11314 | |
| 11315 | case 1: |
| 11316 | /* LD1 {Vd.8h}, addr, #16 */ |
| 11317 | /* LD1 {Vd.4h}, addr, #8 */ |
| 11318 | for (i = 0; i < (all ? 8 : 4); i++) |
| 11319 | aarch64_set_vec_u16 (cpu, vd, i, |
| 11320 | aarch64_get_mem_u16 (cpu, address + i * 2)); |
| 11321 | return; |
| 11322 | |
| 11323 | case 2: |
| 11324 | /* LD1 {Vd.4s}, addr, #16 */ |
| 11325 | /* LD1 {Vd.2s}, addr, #8 */ |
| 11326 | for (i = 0; i < (all ? 4 : 2); i++) |
| 11327 | aarch64_set_vec_u32 (cpu, vd, i, |
| 11328 | aarch64_get_mem_u32 (cpu, address + i * 4)); |
| 11329 | return; |
| 11330 | |
| 11331 | case 3: |
| 11332 | /* LD1 {Vd.2d}, addr, #16 */ |
| 11333 | /* LD1 {Vd.1d}, addr, #8 */ |
| 11334 | for (i = 0; i < (all ? 2 : 1); i++) |
| 11335 | aarch64_set_vec_u64 (cpu, vd, i, |
| 11336 | aarch64_get_mem_u64 (cpu, address + i * 8)); |
| 11337 | return; |
| 11338 | } |
| 11339 | } |
| 11340 | |
| 11341 | /* Load multiple 1-element structures into two registers. */ |
| 11342 | static void |
| 11343 | LD1_2 (sim_cpu *cpu, uint64_t address) |
| 11344 | { |
| 11345 | /* FIXME: This algorithm is *exactly* the same as the LD2 version. |
| 11346 | So why have two different instructions ? There must be something |
| 11347 | wrong somewhere. */ |
| 11348 | vec_load (cpu, address, 2); |
| 11349 | } |
| 11350 | |
| 11351 | /* Load multiple 1-element structures into three registers. */ |
| 11352 | static void |
| 11353 | LD1_3 (sim_cpu *cpu, uint64_t address) |
| 11354 | { |
| 11355 | /* FIXME: This algorithm is *exactly* the same as the LD3 version. |
| 11356 | So why have two different instructions ? There must be something |
| 11357 | wrong somewhere. */ |
| 11358 | vec_load (cpu, address, 3); |
| 11359 | } |
| 11360 | |
| 11361 | /* Load multiple 1-element structures into four registers. */ |
| 11362 | static void |
| 11363 | LD1_4 (sim_cpu *cpu, uint64_t address) |
| 11364 | { |
| 11365 | /* FIXME: This algorithm is *exactly* the same as the LD4 version. |
| 11366 | So why have two different instructions ? There must be something |
| 11367 | wrong somewhere. */ |
| 11368 | vec_load (cpu, address, 4); |
| 11369 | } |
| 11370 | |
| 11371 | /* Store multiple N-element structures to N consecutive registers. */ |
| 11372 | static void |
| 11373 | vec_store (sim_cpu *cpu, uint64_t address, unsigned N) |
| 11374 | { |
| 11375 | int all = INSTR (30, 30); |
| 11376 | unsigned size = INSTR (11, 10); |
| 11377 | unsigned vd = INSTR (4, 0); |
| 11378 | unsigned i; |
| 11379 | |
| 11380 | switch (size) |
| 11381 | { |
| 11382 | case 0: /* 8-bit operations. */ |
| 11383 | if (all) |
| 11384 | for (i = 0; i < (16 * N); i++) |
| 11385 | aarch64_set_mem_u8 |
| 11386 | (cpu, address + i, |
| 11387 | aarch64_get_vec_u8 (cpu, vec_reg (vd, i >> 4), i & 15)); |
| 11388 | else |
| 11389 | for (i = 0; i < (8 * N); i++) |
| 11390 | aarch64_set_mem_u8 |
| 11391 | (cpu, address + i, |
| 11392 | aarch64_get_vec_u8 (cpu, vec_reg (vd, i >> 3), i & 7)); |
| 11393 | return; |
| 11394 | |
| 11395 | case 1: /* 16-bit operations. */ |
| 11396 | if (all) |
| 11397 | for (i = 0; i < (8 * N); i++) |
| 11398 | aarch64_set_mem_u16 |
| 11399 | (cpu, address + i * 2, |
| 11400 | aarch64_get_vec_u16 (cpu, vec_reg (vd, i >> 3), i & 7)); |
| 11401 | else |
| 11402 | for (i = 0; i < (4 * N); i++) |
| 11403 | aarch64_set_mem_u16 |
| 11404 | (cpu, address + i * 2, |
| 11405 | aarch64_get_vec_u16 (cpu, vec_reg (vd, i >> 2), i & 3)); |
| 11406 | return; |
| 11407 | |
| 11408 | case 2: /* 32-bit operations. */ |
| 11409 | if (all) |
| 11410 | for (i = 0; i < (4 * N); i++) |
| 11411 | aarch64_set_mem_u32 |
| 11412 | (cpu, address + i * 4, |
| 11413 | aarch64_get_vec_u32 (cpu, vec_reg (vd, i >> 2), i & 3)); |
| 11414 | else |
| 11415 | for (i = 0; i < (2 * N); i++) |
| 11416 | aarch64_set_mem_u32 |
| 11417 | (cpu, address + i * 4, |
| 11418 | aarch64_get_vec_u32 (cpu, vec_reg (vd, i >> 1), i & 1)); |
| 11419 | return; |
| 11420 | |
| 11421 | case 3: /* 64-bit operations. */ |
| 11422 | if (all) |
| 11423 | for (i = 0; i < (2 * N); i++) |
| 11424 | aarch64_set_mem_u64 |
| 11425 | (cpu, address + i * 8, |
| 11426 | aarch64_get_vec_u64 (cpu, vec_reg (vd, i >> 1), i & 1)); |
| 11427 | else |
| 11428 | for (i = 0; i < N; i++) |
| 11429 | aarch64_set_mem_u64 |
| 11430 | (cpu, address + i * 8, |
| 11431 | aarch64_get_vec_u64 (cpu, vec_reg (vd, i), 0)); |
| 11432 | return; |
| 11433 | } |
| 11434 | } |
| 11435 | |
| 11436 | /* Store multiple 4-element structure to four consecutive registers. */ |
| 11437 | static void |
| 11438 | ST4 (sim_cpu *cpu, uint64_t address) |
| 11439 | { |
| 11440 | vec_store (cpu, address, 4); |
| 11441 | } |
| 11442 | |
| 11443 | /* Store multiple 3-element structures to three consecutive registers. */ |
| 11444 | static void |
| 11445 | ST3 (sim_cpu *cpu, uint64_t address) |
| 11446 | { |
| 11447 | vec_store (cpu, address, 3); |
| 11448 | } |
| 11449 | |
| 11450 | /* Store multiple 2-element structures to two consecutive registers. */ |
| 11451 | static void |
| 11452 | ST2 (sim_cpu *cpu, uint64_t address) |
| 11453 | { |
| 11454 | vec_store (cpu, address, 2); |
| 11455 | } |
| 11456 | |
| 11457 | /* Store multiple 1-element structures into one register. */ |
| 11458 | static void |
| 11459 | ST1_1 (sim_cpu *cpu, uint64_t address) |
| 11460 | { |
| 11461 | int all = INSTR (30, 30); |
| 11462 | unsigned size = INSTR (11, 10); |
| 11463 | unsigned vd = INSTR (4, 0); |
| 11464 | unsigned i; |
| 11465 | |
| 11466 | switch (size) |
| 11467 | { |
| 11468 | case 0: |
| 11469 | for (i = 0; i < (all ? 16 : 8); i++) |
| 11470 | aarch64_set_mem_u8 (cpu, address + i, |
| 11471 | aarch64_get_vec_u8 (cpu, vd, i)); |
| 11472 | return; |
| 11473 | |
| 11474 | case 1: |
| 11475 | for (i = 0; i < (all ? 8 : 4); i++) |
| 11476 | aarch64_set_mem_u16 (cpu, address + i * 2, |
| 11477 | aarch64_get_vec_u16 (cpu, vd, i)); |
| 11478 | return; |
| 11479 | |
| 11480 | case 2: |
| 11481 | for (i = 0; i < (all ? 4 : 2); i++) |
| 11482 | aarch64_set_mem_u32 (cpu, address + i * 4, |
| 11483 | aarch64_get_vec_u32 (cpu, vd, i)); |
| 11484 | return; |
| 11485 | |
| 11486 | case 3: |
| 11487 | for (i = 0; i < (all ? 2 : 1); i++) |
| 11488 | aarch64_set_mem_u64 (cpu, address + i * 8, |
| 11489 | aarch64_get_vec_u64 (cpu, vd, i)); |
| 11490 | return; |
| 11491 | } |
| 11492 | } |
| 11493 | |
| 11494 | /* Store multiple 1-element structures into two registers. */ |
| 11495 | static void |
| 11496 | ST1_2 (sim_cpu *cpu, uint64_t address) |
| 11497 | { |
| 11498 | /* FIXME: This algorithm is *exactly* the same as the ST2 version. |
| 11499 | So why have two different instructions ? There must be |
| 11500 | something wrong somewhere. */ |
| 11501 | vec_store (cpu, address, 2); |
| 11502 | } |
| 11503 | |
| 11504 | /* Store multiple 1-element structures into three registers. */ |
| 11505 | static void |
| 11506 | ST1_3 (sim_cpu *cpu, uint64_t address) |
| 11507 | { |
| 11508 | /* FIXME: This algorithm is *exactly* the same as the ST3 version. |
| 11509 | So why have two different instructions ? There must be |
| 11510 | something wrong somewhere. */ |
| 11511 | vec_store (cpu, address, 3); |
| 11512 | } |
| 11513 | |
| 11514 | /* Store multiple 1-element structures into four registers. */ |
| 11515 | static void |
| 11516 | ST1_4 (sim_cpu *cpu, uint64_t address) |
| 11517 | { |
| 11518 | /* FIXME: This algorithm is *exactly* the same as the ST4 version. |
| 11519 | So why have two different instructions ? There must be |
| 11520 | something wrong somewhere. */ |
| 11521 | vec_store (cpu, address, 4); |
| 11522 | } |
| 11523 | |
| 11524 | static void |
| 11525 | do_vec_LDnR (sim_cpu *cpu, uint64_t address) |
| 11526 | { |
| 11527 | /* instr[31] = 0 |
| 11528 | instr[30] = element selector 0=>half, 1=>all elements |
| 11529 | instr[29,24] = 00 1101 |
| 11530 | instr[23] = 0=>simple, 1=>post |
| 11531 | instr[22] = 1 |
| 11532 | instr[21] = width: LD1R-or-LD3R (0) / LD2R-or-LD4R (1) |
| 11533 | instr[20,16] = 0 0000 (simple), Vinc (reg-post-inc, no SP), |
| 11534 | 11111 (immediate post inc) |
| 11535 | instr[15,14] = 11 |
| 11536 | instr[13] = width: LD1R-or-LD2R (0) / LD3R-or-LD4R (1) |
| 11537 | instr[12] = 0 |
| 11538 | instr[11,10] = element size 00=> byte(b), 01=> half(h), |
| 11539 | 10=> word(s), 11=> double(d) |
| 11540 | instr[9,5] = address |
| 11541 | instr[4,0] = Vd */ |
| 11542 | |
| 11543 | unsigned full = INSTR (30, 30); |
| 11544 | unsigned vd = INSTR (4, 0); |
| 11545 | unsigned size = INSTR (11, 10); |
| 11546 | int i; |
| 11547 | |
| 11548 | NYI_assert (29, 24, 0x0D); |
| 11549 | NYI_assert (22, 22, 1); |
| 11550 | NYI_assert (15, 14, 3); |
| 11551 | NYI_assert (12, 12, 0); |
| 11552 | |
| 11553 | switch ((INSTR (13, 13) << 1) | INSTR (21, 21)) |
| 11554 | { |
| 11555 | case 0: /* LD1R. */ |
| 11556 | switch (size) |
| 11557 | { |
| 11558 | case 0: |
| 11559 | { |
| 11560 | uint8_t val = aarch64_get_mem_u8 (cpu, address); |
| 11561 | for (i = 0; i < (full ? 16 : 8); i++) |
| 11562 | aarch64_set_vec_u8 (cpu, vd, i, val); |
| 11563 | break; |
| 11564 | } |
| 11565 | |
| 11566 | case 1: |
| 11567 | { |
| 11568 | uint16_t val = aarch64_get_mem_u16 (cpu, address); |
| 11569 | for (i = 0; i < (full ? 8 : 4); i++) |
| 11570 | aarch64_set_vec_u16 (cpu, vd, i, val); |
| 11571 | break; |
| 11572 | } |
| 11573 | |
| 11574 | case 2: |
| 11575 | { |
| 11576 | uint32_t val = aarch64_get_mem_u32 (cpu, address); |
| 11577 | for (i = 0; i < (full ? 4 : 2); i++) |
| 11578 | aarch64_set_vec_u32 (cpu, vd, i, val); |
| 11579 | break; |
| 11580 | } |
| 11581 | |
| 11582 | case 3: |
| 11583 | { |
| 11584 | uint64_t val = aarch64_get_mem_u64 (cpu, address); |
| 11585 | for (i = 0; i < (full ? 2 : 1); i++) |
| 11586 | aarch64_set_vec_u64 (cpu, vd, i, val); |
| 11587 | break; |
| 11588 | } |
| 11589 | |
| 11590 | default: |
| 11591 | HALT_UNALLOC; |
| 11592 | } |
| 11593 | break; |
| 11594 | |
| 11595 | case 1: /* LD2R. */ |
| 11596 | switch (size) |
| 11597 | { |
| 11598 | case 0: |
| 11599 | { |
| 11600 | uint8_t val1 = aarch64_get_mem_u8 (cpu, address); |
| 11601 | uint8_t val2 = aarch64_get_mem_u8 (cpu, address + 1); |
| 11602 | |
| 11603 | for (i = 0; i < (full ? 16 : 8); i++) |
| 11604 | { |
| 11605 | aarch64_set_vec_u8 (cpu, vd, 0, val1); |
| 11606 | aarch64_set_vec_u8 (cpu, vd + 1, 0, val2); |
| 11607 | } |
| 11608 | break; |
| 11609 | } |
| 11610 | |
| 11611 | case 1: |
| 11612 | { |
| 11613 | uint16_t val1 = aarch64_get_mem_u16 (cpu, address); |
| 11614 | uint16_t val2 = aarch64_get_mem_u16 (cpu, address + 2); |
| 11615 | |
| 11616 | for (i = 0; i < (full ? 8 : 4); i++) |
| 11617 | { |
| 11618 | aarch64_set_vec_u16 (cpu, vd, 0, val1); |
| 11619 | aarch64_set_vec_u16 (cpu, vd + 1, 0, val2); |
| 11620 | } |
| 11621 | break; |
| 11622 | } |
| 11623 | |
| 11624 | case 2: |
| 11625 | { |
| 11626 | uint32_t val1 = aarch64_get_mem_u32 (cpu, address); |
| 11627 | uint32_t val2 = aarch64_get_mem_u32 (cpu, address + 4); |
| 11628 | |
| 11629 | for (i = 0; i < (full ? 4 : 2); i++) |
| 11630 | { |
| 11631 | aarch64_set_vec_u32 (cpu, vd, 0, val1); |
| 11632 | aarch64_set_vec_u32 (cpu, vd + 1, 0, val2); |
| 11633 | } |
| 11634 | break; |
| 11635 | } |
| 11636 | |
| 11637 | case 3: |
| 11638 | { |
| 11639 | uint64_t val1 = aarch64_get_mem_u64 (cpu, address); |
| 11640 | uint64_t val2 = aarch64_get_mem_u64 (cpu, address + 8); |
| 11641 | |
| 11642 | for (i = 0; i < (full ? 2 : 1); i++) |
| 11643 | { |
| 11644 | aarch64_set_vec_u64 (cpu, vd, 0, val1); |
| 11645 | aarch64_set_vec_u64 (cpu, vd + 1, 0, val2); |
| 11646 | } |
| 11647 | break; |
| 11648 | } |
| 11649 | |
| 11650 | default: |
| 11651 | HALT_UNALLOC; |
| 11652 | } |
| 11653 | break; |
| 11654 | |
| 11655 | case 2: /* LD3R. */ |
| 11656 | switch (size) |
| 11657 | { |
| 11658 | case 0: |
| 11659 | { |
| 11660 | uint8_t val1 = aarch64_get_mem_u8 (cpu, address); |
| 11661 | uint8_t val2 = aarch64_get_mem_u8 (cpu, address + 1); |
| 11662 | uint8_t val3 = aarch64_get_mem_u8 (cpu, address + 2); |
| 11663 | |
| 11664 | for (i = 0; i < (full ? 16 : 8); i++) |
| 11665 | { |
| 11666 | aarch64_set_vec_u8 (cpu, vd, 0, val1); |
| 11667 | aarch64_set_vec_u8 (cpu, vd + 1, 0, val2); |
| 11668 | aarch64_set_vec_u8 (cpu, vd + 2, 0, val3); |
| 11669 | } |
| 11670 | } |
| 11671 | break; |
| 11672 | |
| 11673 | case 1: |
| 11674 | { |
| 11675 | uint32_t val1 = aarch64_get_mem_u16 (cpu, address); |
| 11676 | uint32_t val2 = aarch64_get_mem_u16 (cpu, address + 2); |
| 11677 | uint32_t val3 = aarch64_get_mem_u16 (cpu, address + 4); |
| 11678 | |
| 11679 | for (i = 0; i < (full ? 8 : 4); i++) |
| 11680 | { |
| 11681 | aarch64_set_vec_u16 (cpu, vd, 0, val1); |
| 11682 | aarch64_set_vec_u16 (cpu, vd + 1, 0, val2); |
| 11683 | aarch64_set_vec_u16 (cpu, vd + 2, 0, val3); |
| 11684 | } |
| 11685 | } |
| 11686 | break; |
| 11687 | |
| 11688 | case 2: |
| 11689 | { |
| 11690 | uint32_t val1 = aarch64_get_mem_u32 (cpu, address); |
| 11691 | uint32_t val2 = aarch64_get_mem_u32 (cpu, address + 4); |
| 11692 | uint32_t val3 = aarch64_get_mem_u32 (cpu, address + 8); |
| 11693 | |
| 11694 | for (i = 0; i < (full ? 4 : 2); i++) |
| 11695 | { |
| 11696 | aarch64_set_vec_u32 (cpu, vd, 0, val1); |
| 11697 | aarch64_set_vec_u32 (cpu, vd + 1, 0, val2); |
| 11698 | aarch64_set_vec_u32 (cpu, vd + 2, 0, val3); |
| 11699 | } |
| 11700 | } |
| 11701 | break; |
| 11702 | |
| 11703 | case 3: |
| 11704 | { |
| 11705 | uint64_t val1 = aarch64_get_mem_u64 (cpu, address); |
| 11706 | uint64_t val2 = aarch64_get_mem_u64 (cpu, address + 8); |
| 11707 | uint64_t val3 = aarch64_get_mem_u64 (cpu, address + 16); |
| 11708 | |
| 11709 | for (i = 0; i < (full ? 2 : 1); i++) |
| 11710 | { |
| 11711 | aarch64_set_vec_u64 (cpu, vd, 0, val1); |
| 11712 | aarch64_set_vec_u64 (cpu, vd + 1, 0, val2); |
| 11713 | aarch64_set_vec_u64 (cpu, vd + 2, 0, val3); |
| 11714 | } |
| 11715 | } |
| 11716 | break; |
| 11717 | |
| 11718 | default: |
| 11719 | HALT_UNALLOC; |
| 11720 | } |
| 11721 | break; |
| 11722 | |
| 11723 | case 3: /* LD4R. */ |
| 11724 | switch (size) |
| 11725 | { |
| 11726 | case 0: |
| 11727 | { |
| 11728 | uint8_t val1 = aarch64_get_mem_u8 (cpu, address); |
| 11729 | uint8_t val2 = aarch64_get_mem_u8 (cpu, address + 1); |
| 11730 | uint8_t val3 = aarch64_get_mem_u8 (cpu, address + 2); |
| 11731 | uint8_t val4 = aarch64_get_mem_u8 (cpu, address + 3); |
| 11732 | |
| 11733 | for (i = 0; i < (full ? 16 : 8); i++) |
| 11734 | { |
| 11735 | aarch64_set_vec_u8 (cpu, vd, 0, val1); |
| 11736 | aarch64_set_vec_u8 (cpu, vd + 1, 0, val2); |
| 11737 | aarch64_set_vec_u8 (cpu, vd + 2, 0, val3); |
| 11738 | aarch64_set_vec_u8 (cpu, vd + 3, 0, val4); |
| 11739 | } |
| 11740 | } |
| 11741 | break; |
| 11742 | |
| 11743 | case 1: |
| 11744 | { |
| 11745 | uint32_t val1 = aarch64_get_mem_u16 (cpu, address); |
| 11746 | uint32_t val2 = aarch64_get_mem_u16 (cpu, address + 2); |
| 11747 | uint32_t val3 = aarch64_get_mem_u16 (cpu, address + 4); |
| 11748 | uint32_t val4 = aarch64_get_mem_u16 (cpu, address + 6); |
| 11749 | |
| 11750 | for (i = 0; i < (full ? 8 : 4); i++) |
| 11751 | { |
| 11752 | aarch64_set_vec_u16 (cpu, vd, 0, val1); |
| 11753 | aarch64_set_vec_u16 (cpu, vd + 1, 0, val2); |
| 11754 | aarch64_set_vec_u16 (cpu, vd + 2, 0, val3); |
| 11755 | aarch64_set_vec_u16 (cpu, vd + 3, 0, val4); |
| 11756 | } |
| 11757 | } |
| 11758 | break; |
| 11759 | |
| 11760 | case 2: |
| 11761 | { |
| 11762 | uint32_t val1 = aarch64_get_mem_u32 (cpu, address); |
| 11763 | uint32_t val2 = aarch64_get_mem_u32 (cpu, address + 4); |
| 11764 | uint32_t val3 = aarch64_get_mem_u32 (cpu, address + 8); |
| 11765 | uint32_t val4 = aarch64_get_mem_u32 (cpu, address + 12); |
| 11766 | |
| 11767 | for (i = 0; i < (full ? 4 : 2); i++) |
| 11768 | { |
| 11769 | aarch64_set_vec_u32 (cpu, vd, 0, val1); |
| 11770 | aarch64_set_vec_u32 (cpu, vd + 1, 0, val2); |
| 11771 | aarch64_set_vec_u32 (cpu, vd + 2, 0, val3); |
| 11772 | aarch64_set_vec_u32 (cpu, vd + 3, 0, val4); |
| 11773 | } |
| 11774 | } |
| 11775 | break; |
| 11776 | |
| 11777 | case 3: |
| 11778 | { |
| 11779 | uint64_t val1 = aarch64_get_mem_u64 (cpu, address); |
| 11780 | uint64_t val2 = aarch64_get_mem_u64 (cpu, address + 8); |
| 11781 | uint64_t val3 = aarch64_get_mem_u64 (cpu, address + 16); |
| 11782 | uint64_t val4 = aarch64_get_mem_u64 (cpu, address + 24); |
| 11783 | |
| 11784 | for (i = 0; i < (full ? 2 : 1); i++) |
| 11785 | { |
| 11786 | aarch64_set_vec_u64 (cpu, vd, 0, val1); |
| 11787 | aarch64_set_vec_u64 (cpu, vd + 1, 0, val2); |
| 11788 | aarch64_set_vec_u64 (cpu, vd + 2, 0, val3); |
| 11789 | aarch64_set_vec_u64 (cpu, vd + 3, 0, val4); |
| 11790 | } |
| 11791 | } |
| 11792 | break; |
| 11793 | |
| 11794 | default: |
| 11795 | HALT_UNALLOC; |
| 11796 | } |
| 11797 | break; |
| 11798 | |
| 11799 | default: |
| 11800 | HALT_UNALLOC; |
| 11801 | } |
| 11802 | } |
| 11803 | |
| 11804 | static void |
| 11805 | do_vec_load_store (sim_cpu *cpu) |
| 11806 | { |
| 11807 | /* {LD|ST}<N> {Vd..Vd+N}, vaddr |
| 11808 | |
| 11809 | instr[31] = 0 |
| 11810 | instr[30] = element selector 0=>half, 1=>all elements |
| 11811 | instr[29,25] = 00110 |
| 11812 | instr[24] = ? |
| 11813 | instr[23] = 0=>simple, 1=>post |
| 11814 | instr[22] = 0=>store, 1=>load |
| 11815 | instr[21] = 0 (LDn) / small(0)-large(1) selector (LDnR) |
| 11816 | instr[20,16] = 00000 (simple), Vinc (reg-post-inc, no SP), |
| 11817 | 11111 (immediate post inc) |
| 11818 | instr[15,12] = elements and destinations. eg for load: |
| 11819 | 0000=>LD4 => load multiple 4-element to |
| 11820 | four consecutive registers |
| 11821 | 0100=>LD3 => load multiple 3-element to |
| 11822 | three consecutive registers |
| 11823 | 1000=>LD2 => load multiple 2-element to |
| 11824 | two consecutive registers |
| 11825 | 0010=>LD1 => load multiple 1-element to |
| 11826 | four consecutive registers |
| 11827 | 0110=>LD1 => load multiple 1-element to |
| 11828 | three consecutive registers |
| 11829 | 1010=>LD1 => load multiple 1-element to |
| 11830 | two consecutive registers |
| 11831 | 0111=>LD1 => load multiple 1-element to |
| 11832 | one register |
| 11833 | 1100=>LDR1,LDR2 |
| 11834 | 1110=>LDR3,LDR4 |
| 11835 | instr[11,10] = element size 00=> byte(b), 01=> half(h), |
| 11836 | 10=> word(s), 11=> double(d) |
| 11837 | instr[9,5] = Vn, can be SP |
| 11838 | instr[4,0] = Vd */ |
| 11839 | |
| 11840 | int post; |
| 11841 | int load; |
| 11842 | unsigned vn; |
| 11843 | uint64_t address; |
| 11844 | int type; |
| 11845 | |
| 11846 | if (INSTR (31, 31) != 0 || INSTR (29, 25) != 0x06) |
| 11847 | HALT_NYI; |
| 11848 | |
| 11849 | type = INSTR (15, 12); |
| 11850 | if (type != 0xE && type != 0xE && INSTR (21, 21) != 0) |
| 11851 | HALT_NYI; |
| 11852 | |
| 11853 | post = INSTR (23, 23); |
| 11854 | load = INSTR (22, 22); |
| 11855 | vn = INSTR (9, 5); |
| 11856 | address = aarch64_get_reg_u64 (cpu, vn, SP_OK); |
| 11857 | |
| 11858 | if (post) |
| 11859 | { |
| 11860 | unsigned vm = INSTR (20, 16); |
| 11861 | |
| 11862 | if (vm == R31) |
| 11863 | { |
| 11864 | unsigned sizeof_operation; |
| 11865 | |
| 11866 | switch (type) |
| 11867 | { |
| 11868 | case 0: sizeof_operation = 32; break; |
| 11869 | case 4: sizeof_operation = 24; break; |
| 11870 | case 8: sizeof_operation = 16; break; |
| 11871 | |
| 11872 | case 0xC: |
| 11873 | sizeof_operation = INSTR (21, 21) ? 2 : 1; |
| 11874 | sizeof_operation <<= INSTR (11, 10); |
| 11875 | break; |
| 11876 | |
| 11877 | case 0xE: |
| 11878 | sizeof_operation = INSTR (21, 21) ? 8 : 4; |
| 11879 | sizeof_operation <<= INSTR (11, 10); |
| 11880 | break; |
| 11881 | |
| 11882 | case 7: |
| 11883 | /* One register, immediate offset variant. */ |
| 11884 | sizeof_operation = 8; |
| 11885 | break; |
| 11886 | |
| 11887 | case 10: |
| 11888 | /* Two registers, immediate offset variant. */ |
| 11889 | sizeof_operation = 16; |
| 11890 | break; |
| 11891 | |
| 11892 | case 6: |
| 11893 | /* Three registers, immediate offset variant. */ |
| 11894 | sizeof_operation = 24; |
| 11895 | break; |
| 11896 | |
| 11897 | case 2: |
| 11898 | /* Four registers, immediate offset variant. */ |
| 11899 | sizeof_operation = 32; |
| 11900 | break; |
| 11901 | |
| 11902 | default: |
| 11903 | HALT_UNALLOC; |
| 11904 | } |
| 11905 | |
| 11906 | if (INSTR (30, 30)) |
| 11907 | sizeof_operation *= 2; |
| 11908 | |
| 11909 | aarch64_set_reg_u64 (cpu, vn, SP_OK, address + sizeof_operation); |
| 11910 | } |
| 11911 | else |
| 11912 | aarch64_set_reg_u64 (cpu, vn, SP_OK, |
| 11913 | address + aarch64_get_reg_u64 (cpu, vm, NO_SP)); |
| 11914 | } |
| 11915 | else |
| 11916 | { |
| 11917 | NYI_assert (20, 16, 0); |
| 11918 | } |
| 11919 | |
| 11920 | if (load) |
| 11921 | { |
| 11922 | switch (type) |
| 11923 | { |
| 11924 | case 0: LD4 (cpu, address); return; |
| 11925 | case 4: LD3 (cpu, address); return; |
| 11926 | case 8: LD2 (cpu, address); return; |
| 11927 | case 2: LD1_4 (cpu, address); return; |
| 11928 | case 6: LD1_3 (cpu, address); return; |
| 11929 | case 10: LD1_2 (cpu, address); return; |
| 11930 | case 7: LD1_1 (cpu, address); return; |
| 11931 | |
| 11932 | case 0xE: |
| 11933 | case 0xC: do_vec_LDnR (cpu, address); return; |
| 11934 | |
| 11935 | default: |
| 11936 | HALT_NYI; |
| 11937 | } |
| 11938 | } |
| 11939 | |
| 11940 | /* Stores. */ |
| 11941 | switch (type) |
| 11942 | { |
| 11943 | case 0: ST4 (cpu, address); return; |
| 11944 | case 4: ST3 (cpu, address); return; |
| 11945 | case 8: ST2 (cpu, address); return; |
| 11946 | case 2: ST1_4 (cpu, address); return; |
| 11947 | case 6: ST1_3 (cpu, address); return; |
| 11948 | case 10: ST1_2 (cpu, address); return; |
| 11949 | case 7: ST1_1 (cpu, address); return; |
| 11950 | default: |
| 11951 | HALT_NYI; |
| 11952 | } |
| 11953 | } |
| 11954 | |
| 11955 | static void |
| 11956 | dexLdSt (sim_cpu *cpu) |
| 11957 | { |
| 11958 | /* uint32_t group = dispatchGroup (aarch64_get_instr (cpu)); |
| 11959 | assert group == GROUP_LDST_0100 || group == GROUP_LDST_0110 || |
| 11960 | group == GROUP_LDST_1100 || group == GROUP_LDST_1110 |
| 11961 | bits [29,28:26] of a LS are the secondary dispatch vector. */ |
| 11962 | uint32_t group2 = dispatchLS (aarch64_get_instr (cpu)); |
| 11963 | |
| 11964 | switch (group2) |
| 11965 | { |
| 11966 | case LS_EXCL_000: |
| 11967 | dexLoadExclusive (cpu); return; |
| 11968 | |
| 11969 | case LS_LIT_010: |
| 11970 | case LS_LIT_011: |
| 11971 | dexLoadLiteral (cpu); return; |
| 11972 | |
| 11973 | case LS_OTHER_110: |
| 11974 | case LS_OTHER_111: |
| 11975 | dexLoadOther (cpu); return; |
| 11976 | |
| 11977 | case LS_ADVSIMD_001: |
| 11978 | do_vec_load_store (cpu); return; |
| 11979 | |
| 11980 | case LS_PAIR_100: |
| 11981 | dex_load_store_pair_gr (cpu); return; |
| 11982 | |
| 11983 | case LS_PAIR_101: |
| 11984 | dex_load_store_pair_fp (cpu); return; |
| 11985 | |
| 11986 | default: |
| 11987 | /* Should never reach here. */ |
| 11988 | HALT_NYI; |
| 11989 | } |
| 11990 | } |
| 11991 | |
| 11992 | /* Specific decode and execute for group Data Processing Register. */ |
| 11993 | |
| 11994 | static void |
| 11995 | dexLogicalShiftedRegister (sim_cpu *cpu) |
| 11996 | { |
| 11997 | /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 11998 | instr[30,29] = op |
| 11999 | instr[28:24] = 01010 |
| 12000 | instr[23,22] = shift : 0 ==> LSL, 1 ==> LSR, 2 ==> ASR, 3 ==> ROR |
| 12001 | instr[21] = N |
| 12002 | instr[20,16] = Rm |
| 12003 | instr[15,10] = count : must be 0xxxxx for 32 bit |
| 12004 | instr[9,5] = Rn |
| 12005 | instr[4,0] = Rd */ |
| 12006 | |
| 12007 | uint32_t size = INSTR (31, 31); |
| 12008 | Shift shiftType = INSTR (23, 22); |
| 12009 | uint32_t count = INSTR (15, 10); |
| 12010 | |
| 12011 | /* 32 bit operations must have count[5] = 0. |
| 12012 | or else we have an UNALLOC. */ |
| 12013 | if (size == 0 && uimm (count, 5, 5)) |
| 12014 | HALT_UNALLOC; |
| 12015 | |
| 12016 | /* Dispatch on size:op:N. */ |
| 12017 | switch ((INSTR (31, 29) << 1) | INSTR (21, 21)) |
| 12018 | { |
| 12019 | case 0: and32_shift (cpu, shiftType, count); return; |
| 12020 | case 1: bic32_shift (cpu, shiftType, count); return; |
| 12021 | case 2: orr32_shift (cpu, shiftType, count); return; |
| 12022 | case 3: orn32_shift (cpu, shiftType, count); return; |
| 12023 | case 4: eor32_shift (cpu, shiftType, count); return; |
| 12024 | case 5: eon32_shift (cpu, shiftType, count); return; |
| 12025 | case 6: ands32_shift (cpu, shiftType, count); return; |
| 12026 | case 7: bics32_shift (cpu, shiftType, count); return; |
| 12027 | case 8: and64_shift (cpu, shiftType, count); return; |
| 12028 | case 9: bic64_shift (cpu, shiftType, count); return; |
| 12029 | case 10:orr64_shift (cpu, shiftType, count); return; |
| 12030 | case 11:orn64_shift (cpu, shiftType, count); return; |
| 12031 | case 12:eor64_shift (cpu, shiftType, count); return; |
| 12032 | case 13:eon64_shift (cpu, shiftType, count); return; |
| 12033 | case 14:ands64_shift (cpu, shiftType, count); return; |
| 12034 | case 15:bics64_shift (cpu, shiftType, count); return; |
| 12035 | } |
| 12036 | } |
| 12037 | |
| 12038 | /* 32 bit conditional select. */ |
| 12039 | static void |
| 12040 | csel32 (sim_cpu *cpu, CondCode cc) |
| 12041 | { |
| 12042 | unsigned rm = INSTR (20, 16); |
| 12043 | unsigned rn = INSTR (9, 5); |
| 12044 | unsigned rd = INSTR (4, 0); |
| 12045 | |
| 12046 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12047 | testConditionCode (cpu, cc) |
| 12048 | ? aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 12049 | : aarch64_get_reg_u32 (cpu, rm, NO_SP)); |
| 12050 | } |
| 12051 | |
| 12052 | /* 64 bit conditional select. */ |
| 12053 | static void |
| 12054 | csel64 (sim_cpu *cpu, CondCode cc) |
| 12055 | { |
| 12056 | unsigned rm = INSTR (20, 16); |
| 12057 | unsigned rn = INSTR (9, 5); |
| 12058 | unsigned rd = INSTR (4, 0); |
| 12059 | |
| 12060 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12061 | testConditionCode (cpu, cc) |
| 12062 | ? aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 12063 | : aarch64_get_reg_u64 (cpu, rm, NO_SP)); |
| 12064 | } |
| 12065 | |
| 12066 | /* 32 bit conditional increment. */ |
| 12067 | static void |
| 12068 | csinc32 (sim_cpu *cpu, CondCode cc) |
| 12069 | { |
| 12070 | unsigned rm = INSTR (20, 16); |
| 12071 | unsigned rn = INSTR (9, 5); |
| 12072 | unsigned rd = INSTR (4, 0); |
| 12073 | |
| 12074 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12075 | testConditionCode (cpu, cc) |
| 12076 | ? aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 12077 | : aarch64_get_reg_u32 (cpu, rm, NO_SP) + 1); |
| 12078 | } |
| 12079 | |
| 12080 | /* 64 bit conditional increment. */ |
| 12081 | static void |
| 12082 | csinc64 (sim_cpu *cpu, CondCode cc) |
| 12083 | { |
| 12084 | unsigned rm = INSTR (20, 16); |
| 12085 | unsigned rn = INSTR (9, 5); |
| 12086 | unsigned rd = INSTR (4, 0); |
| 12087 | |
| 12088 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12089 | testConditionCode (cpu, cc) |
| 12090 | ? aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 12091 | : aarch64_get_reg_u64 (cpu, rm, NO_SP) + 1); |
| 12092 | } |
| 12093 | |
| 12094 | /* 32 bit conditional invert. */ |
| 12095 | static void |
| 12096 | csinv32 (sim_cpu *cpu, CondCode cc) |
| 12097 | { |
| 12098 | unsigned rm = INSTR (20, 16); |
| 12099 | unsigned rn = INSTR (9, 5); |
| 12100 | unsigned rd = INSTR (4, 0); |
| 12101 | |
| 12102 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12103 | testConditionCode (cpu, cc) |
| 12104 | ? aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 12105 | : ~ aarch64_get_reg_u32 (cpu, rm, NO_SP)); |
| 12106 | } |
| 12107 | |
| 12108 | /* 64 bit conditional invert. */ |
| 12109 | static void |
| 12110 | csinv64 (sim_cpu *cpu, CondCode cc) |
| 12111 | { |
| 12112 | unsigned rm = INSTR (20, 16); |
| 12113 | unsigned rn = INSTR (9, 5); |
| 12114 | unsigned rd = INSTR (4, 0); |
| 12115 | |
| 12116 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12117 | testConditionCode (cpu, cc) |
| 12118 | ? aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 12119 | : ~ aarch64_get_reg_u64 (cpu, rm, NO_SP)); |
| 12120 | } |
| 12121 | |
| 12122 | /* 32 bit conditional negate. */ |
| 12123 | static void |
| 12124 | csneg32 (sim_cpu *cpu, CondCode cc) |
| 12125 | { |
| 12126 | unsigned rm = INSTR (20, 16); |
| 12127 | unsigned rn = INSTR (9, 5); |
| 12128 | unsigned rd = INSTR (4, 0); |
| 12129 | |
| 12130 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12131 | testConditionCode (cpu, cc) |
| 12132 | ? aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 12133 | : - aarch64_get_reg_u32 (cpu, rm, NO_SP)); |
| 12134 | } |
| 12135 | |
| 12136 | /* 64 bit conditional negate. */ |
| 12137 | static void |
| 12138 | csneg64 (sim_cpu *cpu, CondCode cc) |
| 12139 | { |
| 12140 | unsigned rm = INSTR (20, 16); |
| 12141 | unsigned rn = INSTR (9, 5); |
| 12142 | unsigned rd = INSTR (4, 0); |
| 12143 | |
| 12144 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12145 | testConditionCode (cpu, cc) |
| 12146 | ? aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 12147 | : - aarch64_get_reg_u64 (cpu, rm, NO_SP)); |
| 12148 | } |
| 12149 | |
| 12150 | static void |
| 12151 | dexCondSelect (sim_cpu *cpu) |
| 12152 | { |
| 12153 | /* instr[28,21] = 11011011 |
| 12154 | instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 12155 | instr[30:11,10] = op : 000 ==> CSEL, 001 ==> CSINC, |
| 12156 | 100 ==> CSINV, 101 ==> CSNEG, |
| 12157 | _1_ ==> UNALLOC |
| 12158 | instr[29] = S : 0 ==> ok, 1 ==> UNALLOC |
| 12159 | instr[15,12] = cond |
| 12160 | instr[29] = S : 0 ==> ok, 1 ==> UNALLOC */ |
| 12161 | |
| 12162 | CondCode cc = INSTR (15, 12); |
| 12163 | uint32_t S = INSTR (29, 29); |
| 12164 | uint32_t op2 = INSTR (11, 10); |
| 12165 | |
| 12166 | if (S == 1) |
| 12167 | HALT_UNALLOC; |
| 12168 | |
| 12169 | if (op2 & 0x2) |
| 12170 | HALT_UNALLOC; |
| 12171 | |
| 12172 | switch ((INSTR (31, 30) << 1) | op2) |
| 12173 | { |
| 12174 | case 0: csel32 (cpu, cc); return; |
| 12175 | case 1: csinc32 (cpu, cc); return; |
| 12176 | case 2: csinv32 (cpu, cc); return; |
| 12177 | case 3: csneg32 (cpu, cc); return; |
| 12178 | case 4: csel64 (cpu, cc); return; |
| 12179 | case 5: csinc64 (cpu, cc); return; |
| 12180 | case 6: csinv64 (cpu, cc); return; |
| 12181 | case 7: csneg64 (cpu, cc); return; |
| 12182 | } |
| 12183 | } |
| 12184 | |
| 12185 | /* Some helpers for counting leading 1 or 0 bits. */ |
| 12186 | |
| 12187 | /* Counts the number of leading bits which are the same |
| 12188 | in a 32 bit value in the range 1 to 32. */ |
| 12189 | static uint32_t |
| 12190 | leading32 (uint32_t value) |
| 12191 | { |
| 12192 | int32_t mask= 0xffff0000; |
| 12193 | uint32_t count= 16; /* Counts number of bits set in mask. */ |
| 12194 | uint32_t lo = 1; /* Lower bound for number of sign bits. */ |
| 12195 | uint32_t hi = 32; /* Upper bound for number of sign bits. */ |
| 12196 | |
| 12197 | while (lo + 1 < hi) |
| 12198 | { |
| 12199 | int32_t test = (value & mask); |
| 12200 | |
| 12201 | if (test == 0 || test == mask) |
| 12202 | { |
| 12203 | lo = count; |
| 12204 | count = (lo + hi) / 2; |
| 12205 | mask >>= (count - lo); |
| 12206 | } |
| 12207 | else |
| 12208 | { |
| 12209 | hi = count; |
| 12210 | count = (lo + hi) / 2; |
| 12211 | mask <<= hi - count; |
| 12212 | } |
| 12213 | } |
| 12214 | |
| 12215 | if (lo != hi) |
| 12216 | { |
| 12217 | int32_t test; |
| 12218 | |
| 12219 | mask >>= 1; |
| 12220 | test = (value & mask); |
| 12221 | |
| 12222 | if (test == 0 || test == mask) |
| 12223 | count = hi; |
| 12224 | else |
| 12225 | count = lo; |
| 12226 | } |
| 12227 | |
| 12228 | return count; |
| 12229 | } |
| 12230 | |
| 12231 | /* Counts the number of leading bits which are the same |
| 12232 | in a 64 bit value in the range 1 to 64. */ |
| 12233 | static uint64_t |
| 12234 | leading64 (uint64_t value) |
| 12235 | { |
| 12236 | int64_t mask= 0xffffffff00000000LL; |
| 12237 | uint64_t count = 32; /* Counts number of bits set in mask. */ |
| 12238 | uint64_t lo = 1; /* Lower bound for number of sign bits. */ |
| 12239 | uint64_t hi = 64; /* Upper bound for number of sign bits. */ |
| 12240 | |
| 12241 | while (lo + 1 < hi) |
| 12242 | { |
| 12243 | int64_t test = (value & mask); |
| 12244 | |
| 12245 | if (test == 0 || test == mask) |
| 12246 | { |
| 12247 | lo = count; |
| 12248 | count = (lo + hi) / 2; |
| 12249 | mask >>= (count - lo); |
| 12250 | } |
| 12251 | else |
| 12252 | { |
| 12253 | hi = count; |
| 12254 | count = (lo + hi) / 2; |
| 12255 | mask <<= hi - count; |
| 12256 | } |
| 12257 | } |
| 12258 | |
| 12259 | if (lo != hi) |
| 12260 | { |
| 12261 | int64_t test; |
| 12262 | |
| 12263 | mask >>= 1; |
| 12264 | test = (value & mask); |
| 12265 | |
| 12266 | if (test == 0 || test == mask) |
| 12267 | count = hi; |
| 12268 | else |
| 12269 | count = lo; |
| 12270 | } |
| 12271 | |
| 12272 | return count; |
| 12273 | } |
| 12274 | |
| 12275 | /* Bit operations. */ |
| 12276 | /* N.B register args may not be SP. */ |
| 12277 | |
| 12278 | /* 32 bit count leading sign bits. */ |
| 12279 | static void |
| 12280 | cls32 (sim_cpu *cpu) |
| 12281 | { |
| 12282 | unsigned rn = INSTR (9, 5); |
| 12283 | unsigned rd = INSTR (4, 0); |
| 12284 | |
| 12285 | /* N.B. the result needs to exclude the leading bit. */ |
| 12286 | aarch64_set_reg_u64 |
| 12287 | (cpu, rd, NO_SP, leading32 (aarch64_get_reg_u32 (cpu, rn, NO_SP)) - 1); |
| 12288 | } |
| 12289 | |
| 12290 | /* 64 bit count leading sign bits. */ |
| 12291 | static void |
| 12292 | cls64 (sim_cpu *cpu) |
| 12293 | { |
| 12294 | unsigned rn = INSTR (9, 5); |
| 12295 | unsigned rd = INSTR (4, 0); |
| 12296 | |
| 12297 | /* N.B. the result needs to exclude the leading bit. */ |
| 12298 | aarch64_set_reg_u64 |
| 12299 | (cpu, rd, NO_SP, leading64 (aarch64_get_reg_u64 (cpu, rn, NO_SP)) - 1); |
| 12300 | } |
| 12301 | |
| 12302 | /* 32 bit count leading zero bits. */ |
| 12303 | static void |
| 12304 | clz32 (sim_cpu *cpu) |
| 12305 | { |
| 12306 | unsigned rn = INSTR (9, 5); |
| 12307 | unsigned rd = INSTR (4, 0); |
| 12308 | uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 12309 | |
| 12310 | /* if the sign (top) bit is set then the count is 0. */ |
| 12311 | if (pick32 (value, 31, 31)) |
| 12312 | aarch64_set_reg_u64 (cpu, rd, NO_SP, 0L); |
| 12313 | else |
| 12314 | aarch64_set_reg_u64 (cpu, rd, NO_SP, leading32 (value)); |
| 12315 | } |
| 12316 | |
| 12317 | /* 64 bit count leading zero bits. */ |
| 12318 | static void |
| 12319 | clz64 (sim_cpu *cpu) |
| 12320 | { |
| 12321 | unsigned rn = INSTR (9, 5); |
| 12322 | unsigned rd = INSTR (4, 0); |
| 12323 | uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 12324 | |
| 12325 | /* if the sign (top) bit is set then the count is 0. */ |
| 12326 | if (pick64 (value, 63, 63)) |
| 12327 | aarch64_set_reg_u64 (cpu, rd, NO_SP, 0L); |
| 12328 | else |
| 12329 | aarch64_set_reg_u64 (cpu, rd, NO_SP, leading64 (value)); |
| 12330 | } |
| 12331 | |
| 12332 | /* 32 bit reverse bits. */ |
| 12333 | static void |
| 12334 | rbit32 (sim_cpu *cpu) |
| 12335 | { |
| 12336 | unsigned rn = INSTR (9, 5); |
| 12337 | unsigned rd = INSTR (4, 0); |
| 12338 | uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 12339 | uint32_t result = 0; |
| 12340 | int i; |
| 12341 | |
| 12342 | for (i = 0; i < 32; i++) |
| 12343 | { |
| 12344 | result <<= 1; |
| 12345 | result |= (value & 1); |
| 12346 | value >>= 1; |
| 12347 | } |
| 12348 | aarch64_set_reg_u64 (cpu, rd, NO_SP, result); |
| 12349 | } |
| 12350 | |
| 12351 | /* 64 bit reverse bits. */ |
| 12352 | static void |
| 12353 | rbit64 (sim_cpu *cpu) |
| 12354 | { |
| 12355 | unsigned rn = INSTR (9, 5); |
| 12356 | unsigned rd = INSTR (4, 0); |
| 12357 | uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 12358 | uint64_t result = 0; |
| 12359 | int i; |
| 12360 | |
| 12361 | for (i = 0; i < 64; i++) |
| 12362 | { |
| 12363 | result <<= 1; |
| 12364 | result |= (value & 1UL); |
| 12365 | value >>= 1; |
| 12366 | } |
| 12367 | aarch64_set_reg_u64 (cpu, rd, NO_SP, result); |
| 12368 | } |
| 12369 | |
| 12370 | /* 32 bit reverse bytes. */ |
| 12371 | static void |
| 12372 | rev32 (sim_cpu *cpu) |
| 12373 | { |
| 12374 | unsigned rn = INSTR (9, 5); |
| 12375 | unsigned rd = INSTR (4, 0); |
| 12376 | uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 12377 | uint32_t result = 0; |
| 12378 | int i; |
| 12379 | |
| 12380 | for (i = 0; i < 4; i++) |
| 12381 | { |
| 12382 | result <<= 8; |
| 12383 | result |= (value & 0xff); |
| 12384 | value >>= 8; |
| 12385 | } |
| 12386 | aarch64_set_reg_u64 (cpu, rd, NO_SP, result); |
| 12387 | } |
| 12388 | |
| 12389 | /* 64 bit reverse bytes. */ |
| 12390 | static void |
| 12391 | rev64 (sim_cpu *cpu) |
| 12392 | { |
| 12393 | unsigned rn = INSTR (9, 5); |
| 12394 | unsigned rd = INSTR (4, 0); |
| 12395 | uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 12396 | uint64_t result = 0; |
| 12397 | int i; |
| 12398 | |
| 12399 | for (i = 0; i < 8; i++) |
| 12400 | { |
| 12401 | result <<= 8; |
| 12402 | result |= (value & 0xffULL); |
| 12403 | value >>= 8; |
| 12404 | } |
| 12405 | aarch64_set_reg_u64 (cpu, rd, NO_SP, result); |
| 12406 | } |
| 12407 | |
| 12408 | /* 32 bit reverse shorts. */ |
| 12409 | /* N.B.this reverses the order of the bytes in each half word. */ |
| 12410 | static void |
| 12411 | revh32 (sim_cpu *cpu) |
| 12412 | { |
| 12413 | unsigned rn = INSTR (9, 5); |
| 12414 | unsigned rd = INSTR (4, 0); |
| 12415 | uint32_t value = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 12416 | uint32_t result = 0; |
| 12417 | int i; |
| 12418 | |
| 12419 | for (i = 0; i < 2; i++) |
| 12420 | { |
| 12421 | result <<= 8; |
| 12422 | result |= (value & 0x00ff00ff); |
| 12423 | value >>= 8; |
| 12424 | } |
| 12425 | aarch64_set_reg_u64 (cpu, rd, NO_SP, result); |
| 12426 | } |
| 12427 | |
| 12428 | /* 64 bit reverse shorts. */ |
| 12429 | /* N.B.this reverses the order of the bytes in each half word. */ |
| 12430 | static void |
| 12431 | revh64 (sim_cpu *cpu) |
| 12432 | { |
| 12433 | unsigned rn = INSTR (9, 5); |
| 12434 | unsigned rd = INSTR (4, 0); |
| 12435 | uint64_t value = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 12436 | uint64_t result = 0; |
| 12437 | int i; |
| 12438 | |
| 12439 | for (i = 0; i < 2; i++) |
| 12440 | { |
| 12441 | result <<= 8; |
| 12442 | result |= (value & 0x00ff00ff00ff00ffULL); |
| 12443 | value >>= 8; |
| 12444 | } |
| 12445 | aarch64_set_reg_u64 (cpu, rd, NO_SP, result); |
| 12446 | } |
| 12447 | |
| 12448 | static void |
| 12449 | dexDataProc1Source (sim_cpu *cpu) |
| 12450 | { |
| 12451 | /* instr[30] = 1 |
| 12452 | instr[28,21] = 111010110 |
| 12453 | instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 12454 | instr[29] = S : 0 ==> ok, 1 ==> UNALLOC |
| 12455 | instr[20,16] = opcode2 : 00000 ==> ok, ow ==> UNALLOC |
| 12456 | instr[15,10] = opcode : 000000 ==> RBIT, 000001 ==> REV16, |
| 12457 | 000010 ==> REV, 000011 ==> UNALLOC |
| 12458 | 000100 ==> CLZ, 000101 ==> CLS |
| 12459 | ow ==> UNALLOC |
| 12460 | instr[9,5] = rn : may not be SP |
| 12461 | instr[4,0] = rd : may not be SP. */ |
| 12462 | |
| 12463 | uint32_t S = INSTR (29, 29); |
| 12464 | uint32_t opcode2 = INSTR (20, 16); |
| 12465 | uint32_t opcode = INSTR (15, 10); |
| 12466 | uint32_t dispatch = ((INSTR (31, 31) << 3) | opcode); |
| 12467 | |
| 12468 | if (S == 1) |
| 12469 | HALT_UNALLOC; |
| 12470 | |
| 12471 | if (opcode2 != 0) |
| 12472 | HALT_UNALLOC; |
| 12473 | |
| 12474 | if (opcode & 0x38) |
| 12475 | HALT_UNALLOC; |
| 12476 | |
| 12477 | switch (dispatch) |
| 12478 | { |
| 12479 | case 0: rbit32 (cpu); return; |
| 12480 | case 1: revh32 (cpu); return; |
| 12481 | case 2: rev32 (cpu); return; |
| 12482 | case 4: clz32 (cpu); return; |
| 12483 | case 5: cls32 (cpu); return; |
| 12484 | case 8: rbit64 (cpu); return; |
| 12485 | case 9: revh64 (cpu); return; |
| 12486 | case 10:rev32 (cpu); return; |
| 12487 | case 11:rev64 (cpu); return; |
| 12488 | case 12:clz64 (cpu); return; |
| 12489 | case 13:cls64 (cpu); return; |
| 12490 | default: HALT_UNALLOC; |
| 12491 | } |
| 12492 | } |
| 12493 | |
| 12494 | /* Variable shift. |
| 12495 | Shifts by count supplied in register. |
| 12496 | N.B register args may not be SP. |
| 12497 | These all use the shifted auxiliary function for |
| 12498 | simplicity and clarity. Writing the actual shift |
| 12499 | inline would avoid a branch and so be faster but |
| 12500 | would also necessitate getting signs right. */ |
| 12501 | |
| 12502 | /* 32 bit arithmetic shift right. */ |
| 12503 | static void |
| 12504 | asrv32 (sim_cpu *cpu) |
| 12505 | { |
| 12506 | unsigned rm = INSTR (20, 16); |
| 12507 | unsigned rn = INSTR (9, 5); |
| 12508 | unsigned rd = INSTR (4, 0); |
| 12509 | |
| 12510 | aarch64_set_reg_u64 |
| 12511 | (cpu, rd, NO_SP, |
| 12512 | shifted32 (aarch64_get_reg_u32 (cpu, rn, NO_SP), ASR, |
| 12513 | (aarch64_get_reg_u32 (cpu, rm, NO_SP) & 0x1f))); |
| 12514 | } |
| 12515 | |
| 12516 | /* 64 bit arithmetic shift right. */ |
| 12517 | static void |
| 12518 | asrv64 (sim_cpu *cpu) |
| 12519 | { |
| 12520 | unsigned rm = INSTR (20, 16); |
| 12521 | unsigned rn = INSTR (9, 5); |
| 12522 | unsigned rd = INSTR (4, 0); |
| 12523 | |
| 12524 | aarch64_set_reg_u64 |
| 12525 | (cpu, rd, NO_SP, |
| 12526 | shifted64 (aarch64_get_reg_u64 (cpu, rn, NO_SP), ASR, |
| 12527 | (aarch64_get_reg_u64 (cpu, rm, NO_SP) & 0x3f))); |
| 12528 | } |
| 12529 | |
| 12530 | /* 32 bit logical shift left. */ |
| 12531 | static void |
| 12532 | lslv32 (sim_cpu *cpu) |
| 12533 | { |
| 12534 | unsigned rm = INSTR (20, 16); |
| 12535 | unsigned rn = INSTR (9, 5); |
| 12536 | unsigned rd = INSTR (4, 0); |
| 12537 | |
| 12538 | aarch64_set_reg_u64 |
| 12539 | (cpu, rd, NO_SP, |
| 12540 | shifted32 (aarch64_get_reg_u32 (cpu, rn, NO_SP), LSL, |
| 12541 | (aarch64_get_reg_u32 (cpu, rm, NO_SP) & 0x1f))); |
| 12542 | } |
| 12543 | |
| 12544 | /* 64 bit arithmetic shift left. */ |
| 12545 | static void |
| 12546 | lslv64 (sim_cpu *cpu) |
| 12547 | { |
| 12548 | unsigned rm = INSTR (20, 16); |
| 12549 | unsigned rn = INSTR (9, 5); |
| 12550 | unsigned rd = INSTR (4, 0); |
| 12551 | |
| 12552 | aarch64_set_reg_u64 |
| 12553 | (cpu, rd, NO_SP, |
| 12554 | shifted64 (aarch64_get_reg_u64 (cpu, rn, NO_SP), LSL, |
| 12555 | (aarch64_get_reg_u64 (cpu, rm, NO_SP) & 0x3f))); |
| 12556 | } |
| 12557 | |
| 12558 | /* 32 bit logical shift right. */ |
| 12559 | static void |
| 12560 | lsrv32 (sim_cpu *cpu) |
| 12561 | { |
| 12562 | unsigned rm = INSTR (20, 16); |
| 12563 | unsigned rn = INSTR (9, 5); |
| 12564 | unsigned rd = INSTR (4, 0); |
| 12565 | |
| 12566 | aarch64_set_reg_u64 |
| 12567 | (cpu, rd, NO_SP, |
| 12568 | shifted32 (aarch64_get_reg_u32 (cpu, rn, NO_SP), LSR, |
| 12569 | (aarch64_get_reg_u32 (cpu, rm, NO_SP) & 0x1f))); |
| 12570 | } |
| 12571 | |
| 12572 | /* 64 bit logical shift right. */ |
| 12573 | static void |
| 12574 | lsrv64 (sim_cpu *cpu) |
| 12575 | { |
| 12576 | unsigned rm = INSTR (20, 16); |
| 12577 | unsigned rn = INSTR (9, 5); |
| 12578 | unsigned rd = INSTR (4, 0); |
| 12579 | |
| 12580 | aarch64_set_reg_u64 |
| 12581 | (cpu, rd, NO_SP, |
| 12582 | shifted64 (aarch64_get_reg_u64 (cpu, rn, NO_SP), LSR, |
| 12583 | (aarch64_get_reg_u64 (cpu, rm, NO_SP) & 0x3f))); |
| 12584 | } |
| 12585 | |
| 12586 | /* 32 bit rotate right. */ |
| 12587 | static void |
| 12588 | rorv32 (sim_cpu *cpu) |
| 12589 | { |
| 12590 | unsigned rm = INSTR (20, 16); |
| 12591 | unsigned rn = INSTR (9, 5); |
| 12592 | unsigned rd = INSTR (4, 0); |
| 12593 | |
| 12594 | aarch64_set_reg_u64 |
| 12595 | (cpu, rd, NO_SP, |
| 12596 | shifted32 (aarch64_get_reg_u32 (cpu, rn, NO_SP), ROR, |
| 12597 | (aarch64_get_reg_u32 (cpu, rm, NO_SP) & 0x1f))); |
| 12598 | } |
| 12599 | |
| 12600 | /* 64 bit rotate right. */ |
| 12601 | static void |
| 12602 | rorv64 (sim_cpu *cpu) |
| 12603 | { |
| 12604 | unsigned rm = INSTR (20, 16); |
| 12605 | unsigned rn = INSTR (9, 5); |
| 12606 | unsigned rd = INSTR (4, 0); |
| 12607 | |
| 12608 | aarch64_set_reg_u64 |
| 12609 | (cpu, rd, NO_SP, |
| 12610 | shifted64 (aarch64_get_reg_u64 (cpu, rn, NO_SP), ROR, |
| 12611 | (aarch64_get_reg_u64 (cpu, rm, NO_SP) & 0x3f))); |
| 12612 | } |
| 12613 | |
| 12614 | |
| 12615 | /* divide. */ |
| 12616 | |
| 12617 | /* 32 bit signed divide. */ |
| 12618 | static void |
| 12619 | cpuiv32 (sim_cpu *cpu) |
| 12620 | { |
| 12621 | unsigned rm = INSTR (20, 16); |
| 12622 | unsigned rn = INSTR (9, 5); |
| 12623 | unsigned rd = INSTR (4, 0); |
| 12624 | /* N.B. the pseudo-code does the divide using 64 bit data. */ |
| 12625 | /* TODO : check that this rounds towards zero as required. */ |
| 12626 | int64_t dividend = aarch64_get_reg_s32 (cpu, rn, NO_SP); |
| 12627 | int64_t divisor = aarch64_get_reg_s32 (cpu, rm, NO_SP); |
| 12628 | |
| 12629 | aarch64_set_reg_s64 (cpu, rd, NO_SP, |
| 12630 | divisor ? ((int32_t) (dividend / divisor)) : 0); |
| 12631 | } |
| 12632 | |
| 12633 | /* 64 bit signed divide. */ |
| 12634 | static void |
| 12635 | cpuiv64 (sim_cpu *cpu) |
| 12636 | { |
| 12637 | unsigned rm = INSTR (20, 16); |
| 12638 | unsigned rn = INSTR (9, 5); |
| 12639 | unsigned rd = INSTR (4, 0); |
| 12640 | |
| 12641 | /* TODO : check that this rounds towards zero as required. */ |
| 12642 | int64_t divisor = aarch64_get_reg_s64 (cpu, rm, NO_SP); |
| 12643 | |
| 12644 | aarch64_set_reg_s64 |
| 12645 | (cpu, rd, NO_SP, |
| 12646 | divisor ? (aarch64_get_reg_s64 (cpu, rn, NO_SP) / divisor) : 0); |
| 12647 | } |
| 12648 | |
| 12649 | /* 32 bit unsigned divide. */ |
| 12650 | static void |
| 12651 | udiv32 (sim_cpu *cpu) |
| 12652 | { |
| 12653 | unsigned rm = INSTR (20, 16); |
| 12654 | unsigned rn = INSTR (9, 5); |
| 12655 | unsigned rd = INSTR (4, 0); |
| 12656 | |
| 12657 | /* N.B. the pseudo-code does the divide using 64 bit data. */ |
| 12658 | uint64_t dividend = aarch64_get_reg_u32 (cpu, rn, NO_SP); |
| 12659 | uint64_t divisor = aarch64_get_reg_u32 (cpu, rm, NO_SP); |
| 12660 | |
| 12661 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12662 | divisor ? (uint32_t) (dividend / divisor) : 0); |
| 12663 | } |
| 12664 | |
| 12665 | /* 64 bit unsigned divide. */ |
| 12666 | static void |
| 12667 | udiv64 (sim_cpu *cpu) |
| 12668 | { |
| 12669 | unsigned rm = INSTR (20, 16); |
| 12670 | unsigned rn = INSTR (9, 5); |
| 12671 | unsigned rd = INSTR (4, 0); |
| 12672 | |
| 12673 | /* TODO : check that this rounds towards zero as required. */ |
| 12674 | uint64_t divisor = aarch64_get_reg_u64 (cpu, rm, NO_SP); |
| 12675 | |
| 12676 | aarch64_set_reg_u64 |
| 12677 | (cpu, rd, NO_SP, |
| 12678 | divisor ? (aarch64_get_reg_u64 (cpu, rn, NO_SP) / divisor) : 0); |
| 12679 | } |
| 12680 | |
| 12681 | static void |
| 12682 | dexDataProc2Source (sim_cpu *cpu) |
| 12683 | { |
| 12684 | /* assert instr[30] == 0 |
| 12685 | instr[28,21] == 11010110 |
| 12686 | instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit |
| 12687 | instr[29] = S : 0 ==> ok, 1 ==> UNALLOC |
| 12688 | instr[15,10] = opcode : 000010 ==> UDIV, 000011 ==> CPUIV, |
| 12689 | 001000 ==> LSLV, 001001 ==> LSRV |
| 12690 | 001010 ==> ASRV, 001011 ==> RORV |
| 12691 | ow ==> UNALLOC. */ |
| 12692 | |
| 12693 | uint32_t dispatch; |
| 12694 | uint32_t S = INSTR (29, 29); |
| 12695 | uint32_t opcode = INSTR (15, 10); |
| 12696 | |
| 12697 | if (S == 1) |
| 12698 | HALT_UNALLOC; |
| 12699 | |
| 12700 | if (opcode & 0x34) |
| 12701 | HALT_UNALLOC; |
| 12702 | |
| 12703 | dispatch = ( (INSTR (31, 31) << 3) |
| 12704 | | (uimm (opcode, 3, 3) << 2) |
| 12705 | | uimm (opcode, 1, 0)); |
| 12706 | switch (dispatch) |
| 12707 | { |
| 12708 | case 2: udiv32 (cpu); return; |
| 12709 | case 3: cpuiv32 (cpu); return; |
| 12710 | case 4: lslv32 (cpu); return; |
| 12711 | case 5: lsrv32 (cpu); return; |
| 12712 | case 6: asrv32 (cpu); return; |
| 12713 | case 7: rorv32 (cpu); return; |
| 12714 | case 10: udiv64 (cpu); return; |
| 12715 | case 11: cpuiv64 (cpu); return; |
| 12716 | case 12: lslv64 (cpu); return; |
| 12717 | case 13: lsrv64 (cpu); return; |
| 12718 | case 14: asrv64 (cpu); return; |
| 12719 | case 15: rorv64 (cpu); return; |
| 12720 | default: HALT_UNALLOC; |
| 12721 | } |
| 12722 | } |
| 12723 | |
| 12724 | |
| 12725 | /* Multiply. */ |
| 12726 | |
| 12727 | /* 32 bit multiply and add. */ |
| 12728 | static void |
| 12729 | madd32 (sim_cpu *cpu) |
| 12730 | { |
| 12731 | unsigned rm = INSTR (20, 16); |
| 12732 | unsigned ra = INSTR (14, 10); |
| 12733 | unsigned rn = INSTR (9, 5); |
| 12734 | unsigned rd = INSTR (4, 0); |
| 12735 | |
| 12736 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 12737 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12738 | aarch64_get_reg_u32 (cpu, ra, NO_SP) |
| 12739 | + aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 12740 | * aarch64_get_reg_u32 (cpu, rm, NO_SP)); |
| 12741 | } |
| 12742 | |
| 12743 | /* 64 bit multiply and add. */ |
| 12744 | static void |
| 12745 | madd64 (sim_cpu *cpu) |
| 12746 | { |
| 12747 | unsigned rm = INSTR (20, 16); |
| 12748 | unsigned ra = INSTR (14, 10); |
| 12749 | unsigned rn = INSTR (9, 5); |
| 12750 | unsigned rd = INSTR (4, 0); |
| 12751 | |
| 12752 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 12753 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12754 | aarch64_get_reg_u64 (cpu, ra, NO_SP) |
| 12755 | + (aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 12756 | * aarch64_get_reg_u64 (cpu, rm, NO_SP))); |
| 12757 | } |
| 12758 | |
| 12759 | /* 32 bit multiply and sub. */ |
| 12760 | static void |
| 12761 | msub32 (sim_cpu *cpu) |
| 12762 | { |
| 12763 | unsigned rm = INSTR (20, 16); |
| 12764 | unsigned ra = INSTR (14, 10); |
| 12765 | unsigned rn = INSTR (9, 5); |
| 12766 | unsigned rd = INSTR (4, 0); |
| 12767 | |
| 12768 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 12769 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12770 | aarch64_get_reg_u32 (cpu, ra, NO_SP) |
| 12771 | - aarch64_get_reg_u32 (cpu, rn, NO_SP) |
| 12772 | * aarch64_get_reg_u32 (cpu, rm, NO_SP)); |
| 12773 | } |
| 12774 | |
| 12775 | /* 64 bit multiply and sub. */ |
| 12776 | static void |
| 12777 | msub64 (sim_cpu *cpu) |
| 12778 | { |
| 12779 | unsigned rm = INSTR (20, 16); |
| 12780 | unsigned ra = INSTR (14, 10); |
| 12781 | unsigned rn = INSTR (9, 5); |
| 12782 | unsigned rd = INSTR (4, 0); |
| 12783 | |
| 12784 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 12785 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 12786 | aarch64_get_reg_u64 (cpu, ra, NO_SP) |
| 12787 | - aarch64_get_reg_u64 (cpu, rn, NO_SP) |
| 12788 | * aarch64_get_reg_u64 (cpu, rm, NO_SP)); |
| 12789 | } |
| 12790 | |
| 12791 | /* Signed multiply add long -- source, source2 : 32 bit, source3 : 64 bit. */ |
| 12792 | static void |
| 12793 | smaddl (sim_cpu *cpu) |
| 12794 | { |
| 12795 | unsigned rm = INSTR (20, 16); |
| 12796 | unsigned ra = INSTR (14, 10); |
| 12797 | unsigned rn = INSTR (9, 5); |
| 12798 | unsigned rd = INSTR (4, 0); |
| 12799 | |
| 12800 | /* N.B. we need to multiply the signed 32 bit values in rn, rm to |
| 12801 | obtain a 64 bit product. */ |
| 12802 | aarch64_set_reg_s64 |
| 12803 | (cpu, rd, NO_SP, |
| 12804 | aarch64_get_reg_s64 (cpu, ra, NO_SP) |
| 12805 | + ((int64_t) aarch64_get_reg_s32 (cpu, rn, NO_SP)) |
| 12806 | * ((int64_t) aarch64_get_reg_s32 (cpu, rm, NO_SP))); |
| 12807 | } |
| 12808 | |
| 12809 | /* Signed multiply sub long -- source, source2 : 32 bit, source3 : 64 bit. */ |
| 12810 | static void |
| 12811 | smsubl (sim_cpu *cpu) |
| 12812 | { |
| 12813 | unsigned rm = INSTR (20, 16); |
| 12814 | unsigned ra = INSTR (14, 10); |
| 12815 | unsigned rn = INSTR (9, 5); |
| 12816 | unsigned rd = INSTR (4, 0); |
| 12817 | |
| 12818 | /* N.B. we need to multiply the signed 32 bit values in rn, rm to |
| 12819 | obtain a 64 bit product. */ |
| 12820 | aarch64_set_reg_s64 |
| 12821 | (cpu, rd, NO_SP, |
| 12822 | aarch64_get_reg_s64 (cpu, ra, NO_SP) |
| 12823 | - ((int64_t) aarch64_get_reg_s32 (cpu, rn, NO_SP)) |
| 12824 | * ((int64_t) aarch64_get_reg_s32 (cpu, rm, NO_SP))); |
| 12825 | } |
| 12826 | |
| 12827 | /* Integer Multiply/Divide. */ |
| 12828 | |
| 12829 | /* First some macros and a helper function. */ |
| 12830 | /* Macros to test or access elements of 64 bit words. */ |
| 12831 | |
| 12832 | /* Mask used to access lo 32 bits of 64 bit unsigned int. */ |
| 12833 | #define LOW_WORD_MASK ((1ULL << 32) - 1) |
| 12834 | /* Return the lo 32 bit word of a 64 bit unsigned int as a 64 bit unsigned int. */ |
| 12835 | #define lowWordToU64(_value_u64) ((_value_u64) & LOW_WORD_MASK) |
| 12836 | /* Return the hi 32 bit word of a 64 bit unsigned int as a 64 bit unsigned int. */ |
| 12837 | #define highWordToU64(_value_u64) ((_value_u64) >> 32) |
| 12838 | |
| 12839 | /* Offset of sign bit in 64 bit signed integger. */ |
| 12840 | #define SIGN_SHIFT_U64 63 |
| 12841 | /* The sign bit itself -- also identifies the minimum negative int value. */ |
| 12842 | #define SIGN_BIT_U64 (1UL << SIGN_SHIFT_U64) |
| 12843 | /* Return true if a 64 bit signed int presented as an unsigned int is the |
| 12844 | most negative value. */ |
| 12845 | #define isMinimumU64(_value_u64) ((_value_u64) == SIGN_BIT_U64) |
| 12846 | /* Return true (non-zero) if a 64 bit signed int presented as an unsigned |
| 12847 | int has its sign bit set to false. */ |
| 12848 | #define isSignSetU64(_value_u64) ((_value_u64) & SIGN_BIT_U64) |
| 12849 | /* Return 1L or -1L according to whether a 64 bit signed int presented as |
| 12850 | an unsigned int has its sign bit set or not. */ |
| 12851 | #define signOfU64(_value_u64) (1L + (((value_u64) >> SIGN_SHIFT_U64) * -2L) |
| 12852 | /* Clear the sign bit of a 64 bit signed int presented as an unsigned int. */ |
| 12853 | #define clearSignU64(_value_u64) ((_value_u64) &= ~SIGN_BIT_U64) |
| 12854 | |
| 12855 | /* Multiply two 64 bit ints and return. |
| 12856 | the hi 64 bits of the 128 bit product. */ |
| 12857 | |
| 12858 | static uint64_t |
| 12859 | mul64hi (uint64_t value1, uint64_t value2) |
| 12860 | { |
| 12861 | uint64_t resultmid1; |
| 12862 | uint64_t result; |
| 12863 | uint64_t value1_lo = lowWordToU64 (value1); |
| 12864 | uint64_t value1_hi = highWordToU64 (value1) ; |
| 12865 | uint64_t value2_lo = lowWordToU64 (value2); |
| 12866 | uint64_t value2_hi = highWordToU64 (value2); |
| 12867 | |
| 12868 | /* Cross-multiply and collect results. */ |
| 12869 | uint64_t xproductlo = value1_lo * value2_lo; |
| 12870 | uint64_t xproductmid1 = value1_lo * value2_hi; |
| 12871 | uint64_t xproductmid2 = value1_hi * value2_lo; |
| 12872 | uint64_t xproducthi = value1_hi * value2_hi; |
| 12873 | uint64_t carry = 0; |
| 12874 | /* Start accumulating 64 bit results. */ |
| 12875 | /* Drop bottom half of lowest cross-product. */ |
| 12876 | uint64_t resultmid = xproductlo >> 32; |
| 12877 | /* Add in middle products. */ |
| 12878 | resultmid = resultmid + xproductmid1; |
| 12879 | |
| 12880 | /* Check for overflow. */ |
| 12881 | if (resultmid < xproductmid1) |
| 12882 | /* Carry over 1 into top cross-product. */ |
| 12883 | carry++; |
| 12884 | |
| 12885 | resultmid1 = resultmid + xproductmid2; |
| 12886 | |
| 12887 | /* Check for overflow. */ |
| 12888 | if (resultmid1 < xproductmid2) |
| 12889 | /* Carry over 1 into top cross-product. */ |
| 12890 | carry++; |
| 12891 | |
| 12892 | /* Drop lowest 32 bits of middle cross-product. */ |
| 12893 | result = resultmid1 >> 32; |
| 12894 | |
| 12895 | /* Add top cross-product plus and any carry. */ |
| 12896 | result += xproducthi + carry; |
| 12897 | |
| 12898 | return result; |
| 12899 | } |
| 12900 | |
| 12901 | /* Signed multiply high, source, source2 : |
| 12902 | 64 bit, dest <-- high 64-bit of result. */ |
| 12903 | static void |
| 12904 | smulh (sim_cpu *cpu) |
| 12905 | { |
| 12906 | uint64_t uresult; |
| 12907 | int64_t result; |
| 12908 | unsigned rm = INSTR (20, 16); |
| 12909 | unsigned rn = INSTR (9, 5); |
| 12910 | unsigned rd = INSTR (4, 0); |
| 12911 | GReg ra = INSTR (14, 10); |
| 12912 | int64_t value1 = aarch64_get_reg_u64 (cpu, rn, NO_SP); |
| 12913 | int64_t value2 = aarch64_get_reg_u64 (cpu, rm, NO_SP); |
| 12914 | uint64_t uvalue1; |
| 12915 | uint64_t uvalue2; |
| 12916 | int64_t signum = 1; |
| 12917 | |
| 12918 | if (ra != R31) |
| 12919 | HALT_UNALLOC; |
| 12920 | |
| 12921 | /* Convert to unsigned and use the unsigned mul64hi routine |
| 12922 | the fix the sign up afterwards. */ |
| 12923 | if (value1 < 0) |
| 12924 | { |
| 12925 | signum *= -1L; |
| 12926 | uvalue1 = -value1; |
| 12927 | } |
| 12928 | else |
| 12929 | { |
| 12930 | uvalue1 = value1; |
| 12931 | } |
| 12932 | |
| 12933 | if (value2 < 0) |
| 12934 | { |
| 12935 | signum *= -1L; |
| 12936 | uvalue2 = -value2; |
| 12937 | } |
| 12938 | else |
| 12939 | { |
| 12940 | uvalue2 = value2; |
| 12941 | } |
| 12942 | |
| 12943 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 12944 | uresult = mul64hi (uvalue1, uvalue2); |
| 12945 | result = uresult; |
| 12946 | result *= signum; |
| 12947 | |
| 12948 | aarch64_set_reg_s64 (cpu, rd, NO_SP, result); |
| 12949 | } |
| 12950 | |
| 12951 | /* Unsigned multiply add long -- source, source2 : |
| 12952 | 32 bit, source3 : 64 bit. */ |
| 12953 | static void |
| 12954 | umaddl (sim_cpu *cpu) |
| 12955 | { |
| 12956 | unsigned rm = INSTR (20, 16); |
| 12957 | unsigned ra = INSTR (14, 10); |
| 12958 | unsigned rn = INSTR (9, 5); |
| 12959 | unsigned rd = INSTR (4, 0); |
| 12960 | |
| 12961 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 12962 | /* N.B. we need to multiply the signed 32 bit values in rn, rm to |
| 12963 | obtain a 64 bit product. */ |
| 12964 | aarch64_set_reg_u64 |
| 12965 | (cpu, rd, NO_SP, |
| 12966 | aarch64_get_reg_u64 (cpu, ra, NO_SP) |
| 12967 | + ((uint64_t) aarch64_get_reg_u32 (cpu, rn, NO_SP)) |
| 12968 | * ((uint64_t) aarch64_get_reg_u32 (cpu, rm, NO_SP))); |
| 12969 | } |
| 12970 | |
| 12971 | /* Unsigned multiply sub long -- source, source2 : 32 bit, source3 : 64 bit. */ |
| 12972 | static void |
| 12973 | umsubl (sim_cpu *cpu) |
| 12974 | { |
| 12975 | unsigned rm = INSTR (20, 16); |
| 12976 | unsigned ra = INSTR (14, 10); |
| 12977 | unsigned rn = INSTR (9, 5); |
| 12978 | unsigned rd = INSTR (4, 0); |
| 12979 | |
| 12980 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 12981 | /* N.B. we need to multiply the signed 32 bit values in rn, rm to |
| 12982 | obtain a 64 bit product. */ |
| 12983 | aarch64_set_reg_u64 |
| 12984 | (cpu, rd, NO_SP, |
| 12985 | aarch64_get_reg_u64 (cpu, ra, NO_SP) |
| 12986 | - ((uint64_t) aarch64_get_reg_u32 (cpu, rn, NO_SP)) |
| 12987 | * ((uint64_t) aarch64_get_reg_u32 (cpu, rm, NO_SP))); |
| 12988 | } |
| 12989 | |
| 12990 | /* Unsigned multiply high, source, source2 : |
| 12991 | 64 bit, dest <-- high 64-bit of result. */ |
| 12992 | static void |
| 12993 | umulh (sim_cpu *cpu) |
| 12994 | { |
| 12995 | unsigned rm = INSTR (20, 16); |
| 12996 | unsigned rn = INSTR (9, 5); |
| 12997 | unsigned rd = INSTR (4, 0); |
| 12998 | GReg ra = INSTR (14, 10); |
| 12999 | |
| 13000 | if (ra != R31) |
| 13001 | HALT_UNALLOC; |
| 13002 | |
| 13003 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13004 | aarch64_set_reg_u64 (cpu, rd, NO_SP, |
| 13005 | mul64hi (aarch64_get_reg_u64 (cpu, rn, NO_SP), |
| 13006 | aarch64_get_reg_u64 (cpu, rm, NO_SP))); |
| 13007 | } |
| 13008 | |
| 13009 | static void |
| 13010 | dexDataProc3Source (sim_cpu *cpu) |
| 13011 | { |
| 13012 | /* assert instr[28,24] == 11011. */ |
| 13013 | /* instr[31] = size : 0 ==> 32 bit, 1 ==> 64 bit (for rd at least) |
| 13014 | instr[30,29] = op54 : 00 ==> ok, ow ==> UNALLOC |
| 13015 | instr[23,21] = op31 : 111 ==> UNALLOC, o2 ==> ok |
| 13016 | instr[15] = o0 : 0/1 ==> ok |
| 13017 | instr[23,21:15] ==> op : 0000 ==> MADD, 0001 ==> MSUB, (32/64 bit) |
| 13018 | 0010 ==> SMADDL, 0011 ==> SMSUBL, (64 bit only) |
| 13019 | 0100 ==> SMULH, (64 bit only) |
| 13020 | 1010 ==> UMADDL, 1011 ==> UNSUBL, (64 bit only) |
| 13021 | 1100 ==> UMULH (64 bit only) |
| 13022 | ow ==> UNALLOC. */ |
| 13023 | |
| 13024 | uint32_t dispatch; |
| 13025 | uint32_t size = INSTR (31, 31); |
| 13026 | uint32_t op54 = INSTR (30, 29); |
| 13027 | uint32_t op31 = INSTR (23, 21); |
| 13028 | uint32_t o0 = INSTR (15, 15); |
| 13029 | |
| 13030 | if (op54 != 0) |
| 13031 | HALT_UNALLOC; |
| 13032 | |
| 13033 | if (size == 0) |
| 13034 | { |
| 13035 | if (op31 != 0) |
| 13036 | HALT_UNALLOC; |
| 13037 | |
| 13038 | if (o0 == 0) |
| 13039 | madd32 (cpu); |
| 13040 | else |
| 13041 | msub32 (cpu); |
| 13042 | return; |
| 13043 | } |
| 13044 | |
| 13045 | dispatch = (op31 << 1) | o0; |
| 13046 | |
| 13047 | switch (dispatch) |
| 13048 | { |
| 13049 | case 0: madd64 (cpu); return; |
| 13050 | case 1: msub64 (cpu); return; |
| 13051 | case 2: smaddl (cpu); return; |
| 13052 | case 3: smsubl (cpu); return; |
| 13053 | case 4: smulh (cpu); return; |
| 13054 | case 10: umaddl (cpu); return; |
| 13055 | case 11: umsubl (cpu); return; |
| 13056 | case 12: umulh (cpu); return; |
| 13057 | default: HALT_UNALLOC; |
| 13058 | } |
| 13059 | } |
| 13060 | |
| 13061 | static void |
| 13062 | dexDPReg (sim_cpu *cpu) |
| 13063 | { |
| 13064 | /* uint32_t group = dispatchGroup (aarch64_get_instr (cpu)); |
| 13065 | assert group == GROUP_DPREG_0101 || group == GROUP_DPREG_1101 |
| 13066 | bits [28:24:21] of a DPReg are the secondary dispatch vector. */ |
| 13067 | uint32_t group2 = dispatchDPReg (aarch64_get_instr (cpu)); |
| 13068 | |
| 13069 | switch (group2) |
| 13070 | { |
| 13071 | case DPREG_LOG_000: |
| 13072 | case DPREG_LOG_001: |
| 13073 | dexLogicalShiftedRegister (cpu); return; |
| 13074 | |
| 13075 | case DPREG_ADDSHF_010: |
| 13076 | dexAddSubtractShiftedRegister (cpu); return; |
| 13077 | |
| 13078 | case DPREG_ADDEXT_011: |
| 13079 | dexAddSubtractExtendedRegister (cpu); return; |
| 13080 | |
| 13081 | case DPREG_ADDCOND_100: |
| 13082 | { |
| 13083 | /* This set bundles a variety of different operations. */ |
| 13084 | /* Check for. */ |
| 13085 | /* 1) add/sub w carry. */ |
| 13086 | uint32_t mask1 = 0x1FE00000U; |
| 13087 | uint32_t val1 = 0x1A000000U; |
| 13088 | /* 2) cond compare register/immediate. */ |
| 13089 | uint32_t mask2 = 0x1FE00000U; |
| 13090 | uint32_t val2 = 0x1A400000U; |
| 13091 | /* 3) cond select. */ |
| 13092 | uint32_t mask3 = 0x1FE00000U; |
| 13093 | uint32_t val3 = 0x1A800000U; |
| 13094 | /* 4) data proc 1/2 source. */ |
| 13095 | uint32_t mask4 = 0x1FE00000U; |
| 13096 | uint32_t val4 = 0x1AC00000U; |
| 13097 | |
| 13098 | if ((aarch64_get_instr (cpu) & mask1) == val1) |
| 13099 | dexAddSubtractWithCarry (cpu); |
| 13100 | |
| 13101 | else if ((aarch64_get_instr (cpu) & mask2) == val2) |
| 13102 | CondCompare (cpu); |
| 13103 | |
| 13104 | else if ((aarch64_get_instr (cpu) & mask3) == val3) |
| 13105 | dexCondSelect (cpu); |
| 13106 | |
| 13107 | else if ((aarch64_get_instr (cpu) & mask4) == val4) |
| 13108 | { |
| 13109 | /* Bit 30 is clear for data proc 2 source |
| 13110 | and set for data proc 1 source. */ |
| 13111 | if (aarch64_get_instr (cpu) & (1U << 30)) |
| 13112 | dexDataProc1Source (cpu); |
| 13113 | else |
| 13114 | dexDataProc2Source (cpu); |
| 13115 | } |
| 13116 | |
| 13117 | else |
| 13118 | /* Should not reach here. */ |
| 13119 | HALT_NYI; |
| 13120 | |
| 13121 | return; |
| 13122 | } |
| 13123 | |
| 13124 | case DPREG_3SRC_110: |
| 13125 | dexDataProc3Source (cpu); return; |
| 13126 | |
| 13127 | case DPREG_UNALLOC_101: |
| 13128 | HALT_UNALLOC; |
| 13129 | |
| 13130 | case DPREG_3SRC_111: |
| 13131 | dexDataProc3Source (cpu); return; |
| 13132 | |
| 13133 | default: |
| 13134 | /* Should never reach here. */ |
| 13135 | HALT_NYI; |
| 13136 | } |
| 13137 | } |
| 13138 | |
| 13139 | /* Unconditional Branch immediate. |
| 13140 | Offset is a PC-relative byte offset in the range +/- 128MiB. |
| 13141 | The offset is assumed to be raw from the decode i.e. the |
| 13142 | simulator is expected to scale them from word offsets to byte. */ |
| 13143 | |
| 13144 | /* Unconditional branch. */ |
| 13145 | static void |
| 13146 | buc (sim_cpu *cpu, int32_t offset) |
| 13147 | { |
| 13148 | aarch64_set_next_PC_by_offset (cpu, offset); |
| 13149 | } |
| 13150 | |
| 13151 | static unsigned stack_depth = 0; |
| 13152 | |
| 13153 | /* Unconditional branch and link -- writes return PC to LR. */ |
| 13154 | static void |
| 13155 | bl (sim_cpu *cpu, int32_t offset) |
| 13156 | { |
| 13157 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13158 | aarch64_save_LR (cpu); |
| 13159 | aarch64_set_next_PC_by_offset (cpu, offset); |
| 13160 | |
| 13161 | if (TRACE_BRANCH_P (cpu)) |
| 13162 | { |
| 13163 | ++ stack_depth; |
| 13164 | TRACE_BRANCH (cpu, |
| 13165 | " %*scall %" PRIx64 " [%s]" |
| 13166 | " [args: %" PRIx64 " %" PRIx64 " %" PRIx64 "]", |
| 13167 | stack_depth, " ", aarch64_get_next_PC (cpu), |
| 13168 | aarch64_get_func (aarch64_get_next_PC (cpu)), |
| 13169 | aarch64_get_reg_u64 (cpu, 0, NO_SP), |
| 13170 | aarch64_get_reg_u64 (cpu, 1, NO_SP), |
| 13171 | aarch64_get_reg_u64 (cpu, 2, NO_SP) |
| 13172 | ); |
| 13173 | } |
| 13174 | } |
| 13175 | |
| 13176 | /* Unconditional Branch register. |
| 13177 | Branch/return address is in source register. */ |
| 13178 | |
| 13179 | /* Unconditional branch. */ |
| 13180 | static void |
| 13181 | br (sim_cpu *cpu) |
| 13182 | { |
| 13183 | unsigned rn = INSTR (9, 5); |
| 13184 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13185 | aarch64_set_next_PC (cpu, aarch64_get_reg_u64 (cpu, rn, NO_SP)); |
| 13186 | } |
| 13187 | |
| 13188 | /* Unconditional branch and link -- writes return PC to LR. */ |
| 13189 | static void |
| 13190 | blr (sim_cpu *cpu) |
| 13191 | { |
| 13192 | unsigned rn = INSTR (9, 5); |
| 13193 | |
| 13194 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13195 | /* The pseudo code in the spec says we update LR before fetching. |
| 13196 | the value from the rn. */ |
| 13197 | aarch64_save_LR (cpu); |
| 13198 | aarch64_set_next_PC (cpu, aarch64_get_reg_u64 (cpu, rn, NO_SP)); |
| 13199 | |
| 13200 | if (TRACE_BRANCH_P (cpu)) |
| 13201 | { |
| 13202 | ++ stack_depth; |
| 13203 | TRACE_BRANCH (cpu, |
| 13204 | " %*scall %" PRIx64 " [%s]" |
| 13205 | " [args: %" PRIx64 " %" PRIx64 " %" PRIx64 "]", |
| 13206 | stack_depth, " ", aarch64_get_next_PC (cpu), |
| 13207 | aarch64_get_func (aarch64_get_next_PC (cpu)), |
| 13208 | aarch64_get_reg_u64 (cpu, 0, NO_SP), |
| 13209 | aarch64_get_reg_u64 (cpu, 1, NO_SP), |
| 13210 | aarch64_get_reg_u64 (cpu, 2, NO_SP) |
| 13211 | ); |
| 13212 | } |
| 13213 | } |
| 13214 | |
| 13215 | /* Return -- assembler will default source to LR this is functionally |
| 13216 | equivalent to br but, presumably, unlike br it side effects the |
| 13217 | branch predictor. */ |
| 13218 | static void |
| 13219 | ret (sim_cpu *cpu) |
| 13220 | { |
| 13221 | unsigned rn = INSTR (9, 5); |
| 13222 | aarch64_set_next_PC (cpu, aarch64_get_reg_u64 (cpu, rn, NO_SP)); |
| 13223 | |
| 13224 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13225 | if (TRACE_BRANCH_P (cpu)) |
| 13226 | { |
| 13227 | TRACE_BRANCH (cpu, |
| 13228 | " %*sreturn [result: %" PRIx64 "]", |
| 13229 | stack_depth, " ", aarch64_get_reg_u64 (cpu, 0, NO_SP)); |
| 13230 | -- stack_depth; |
| 13231 | } |
| 13232 | } |
| 13233 | |
| 13234 | /* NOP -- we implement this and call it from the decode in case we |
| 13235 | want to intercept it later. */ |
| 13236 | |
| 13237 | static void |
| 13238 | nop (sim_cpu *cpu) |
| 13239 | { |
| 13240 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13241 | } |
| 13242 | |
| 13243 | /* Data synchronization barrier. */ |
| 13244 | |
| 13245 | static void |
| 13246 | dsb (sim_cpu *cpu) |
| 13247 | { |
| 13248 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13249 | } |
| 13250 | |
| 13251 | /* Data memory barrier. */ |
| 13252 | |
| 13253 | static void |
| 13254 | dmb (sim_cpu *cpu) |
| 13255 | { |
| 13256 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13257 | } |
| 13258 | |
| 13259 | /* Instruction synchronization barrier. */ |
| 13260 | |
| 13261 | static void |
| 13262 | isb (sim_cpu *cpu) |
| 13263 | { |
| 13264 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13265 | } |
| 13266 | |
| 13267 | static void |
| 13268 | dexBranchImmediate (sim_cpu *cpu) |
| 13269 | { |
| 13270 | /* assert instr[30,26] == 00101 |
| 13271 | instr[31] ==> 0 == B, 1 == BL |
| 13272 | instr[25,0] == imm26 branch offset counted in words. */ |
| 13273 | |
| 13274 | uint32_t top = INSTR (31, 31); |
| 13275 | /* We have a 26 byte signed word offset which we need to pass to the |
| 13276 | execute routine as a signed byte offset. */ |
| 13277 | int32_t offset = simm32 (aarch64_get_instr (cpu), 25, 0) << 2; |
| 13278 | |
| 13279 | if (top) |
| 13280 | bl (cpu, offset); |
| 13281 | else |
| 13282 | buc (cpu, offset); |
| 13283 | } |
| 13284 | |
| 13285 | /* Control Flow. */ |
| 13286 | |
| 13287 | /* Conditional branch |
| 13288 | |
| 13289 | Offset is a PC-relative byte offset in the range +/- 1MiB pos is |
| 13290 | a bit position in the range 0 .. 63 |
| 13291 | |
| 13292 | cc is a CondCode enum value as pulled out of the decode |
| 13293 | |
| 13294 | N.B. any offset register (source) can only be Xn or Wn. */ |
| 13295 | |
| 13296 | static void |
| 13297 | bcc (sim_cpu *cpu, int32_t offset, CondCode cc) |
| 13298 | { |
| 13299 | /* The test returns TRUE if CC is met. */ |
| 13300 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13301 | if (testConditionCode (cpu, cc)) |
| 13302 | aarch64_set_next_PC_by_offset (cpu, offset); |
| 13303 | } |
| 13304 | |
| 13305 | /* 32 bit branch on register non-zero. */ |
| 13306 | static void |
| 13307 | cbnz32 (sim_cpu *cpu, int32_t offset) |
| 13308 | { |
| 13309 | unsigned rt = INSTR (4, 0); |
| 13310 | |
| 13311 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13312 | if (aarch64_get_reg_u32 (cpu, rt, NO_SP) != 0) |
| 13313 | aarch64_set_next_PC_by_offset (cpu, offset); |
| 13314 | } |
| 13315 | |
| 13316 | /* 64 bit branch on register zero. */ |
| 13317 | static void |
| 13318 | cbnz (sim_cpu *cpu, int32_t offset) |
| 13319 | { |
| 13320 | unsigned rt = INSTR (4, 0); |
| 13321 | |
| 13322 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13323 | if (aarch64_get_reg_u64 (cpu, rt, NO_SP) != 0) |
| 13324 | aarch64_set_next_PC_by_offset (cpu, offset); |
| 13325 | } |
| 13326 | |
| 13327 | /* 32 bit branch on register non-zero. */ |
| 13328 | static void |
| 13329 | cbz32 (sim_cpu *cpu, int32_t offset) |
| 13330 | { |
| 13331 | unsigned rt = INSTR (4, 0); |
| 13332 | |
| 13333 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13334 | if (aarch64_get_reg_u32 (cpu, rt, NO_SP) == 0) |
| 13335 | aarch64_set_next_PC_by_offset (cpu, offset); |
| 13336 | } |
| 13337 | |
| 13338 | /* 64 bit branch on register zero. */ |
| 13339 | static void |
| 13340 | cbz (sim_cpu *cpu, int32_t offset) |
| 13341 | { |
| 13342 | unsigned rt = INSTR (4, 0); |
| 13343 | |
| 13344 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13345 | if (aarch64_get_reg_u64 (cpu, rt, NO_SP) == 0) |
| 13346 | aarch64_set_next_PC_by_offset (cpu, offset); |
| 13347 | } |
| 13348 | |
| 13349 | /* Branch on register bit test non-zero -- one size fits all. */ |
| 13350 | static void |
| 13351 | tbnz (sim_cpu *cpu, uint32_t pos, int32_t offset) |
| 13352 | { |
| 13353 | unsigned rt = INSTR (4, 0); |
| 13354 | |
| 13355 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13356 | if (aarch64_get_reg_u64 (cpu, rt, NO_SP) & (1 << pos)) |
| 13357 | aarch64_set_next_PC_by_offset (cpu, offset); |
| 13358 | } |
| 13359 | |
| 13360 | /* Branch on register bit test zero -- one size fits all. */ |
| 13361 | static void |
| 13362 | tbz (sim_cpu *cpu, uint32_t pos, int32_t offset) |
| 13363 | { |
| 13364 | unsigned rt = INSTR (4, 0); |
| 13365 | |
| 13366 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13367 | if (!(aarch64_get_reg_u64 (cpu, rt, NO_SP) & (1 << pos))) |
| 13368 | aarch64_set_next_PC_by_offset (cpu, offset); |
| 13369 | } |
| 13370 | |
| 13371 | static void |
| 13372 | dexCompareBranchImmediate (sim_cpu *cpu) |
| 13373 | { |
| 13374 | /* instr[30,25] = 01 1010 |
| 13375 | instr[31] = size : 0 ==> 32, 1 ==> 64 |
| 13376 | instr[24] = op : 0 ==> CBZ, 1 ==> CBNZ |
| 13377 | instr[23,5] = simm19 branch offset counted in words |
| 13378 | instr[4,0] = rt */ |
| 13379 | |
| 13380 | uint32_t size = INSTR (31, 31); |
| 13381 | uint32_t op = INSTR (24, 24); |
| 13382 | int32_t offset = simm32 (aarch64_get_instr (cpu), 23, 5) << 2; |
| 13383 | |
| 13384 | if (size == 0) |
| 13385 | { |
| 13386 | if (op == 0) |
| 13387 | cbz32 (cpu, offset); |
| 13388 | else |
| 13389 | cbnz32 (cpu, offset); |
| 13390 | } |
| 13391 | else |
| 13392 | { |
| 13393 | if (op == 0) |
| 13394 | cbz (cpu, offset); |
| 13395 | else |
| 13396 | cbnz (cpu, offset); |
| 13397 | } |
| 13398 | } |
| 13399 | |
| 13400 | static void |
| 13401 | dexTestBranchImmediate (sim_cpu *cpu) |
| 13402 | { |
| 13403 | /* instr[31] = b5 : bit 5 of test bit idx |
| 13404 | instr[30,25] = 01 1011 |
| 13405 | instr[24] = op : 0 ==> TBZ, 1 == TBNZ |
| 13406 | instr[23,19] = b40 : bits 4 to 0 of test bit idx |
| 13407 | instr[18,5] = simm14 : signed offset counted in words |
| 13408 | instr[4,0] = uimm5 */ |
| 13409 | |
| 13410 | uint32_t pos = ((INSTR (31, 31) << 4) | INSTR (23, 19)); |
| 13411 | int32_t offset = simm32 (aarch64_get_instr (cpu), 18, 5) << 2; |
| 13412 | |
| 13413 | NYI_assert (30, 25, 0x1b); |
| 13414 | |
| 13415 | if (INSTR (24, 24) == 0) |
| 13416 | tbz (cpu, pos, offset); |
| 13417 | else |
| 13418 | tbnz (cpu, pos, offset); |
| 13419 | } |
| 13420 | |
| 13421 | static void |
| 13422 | dexCondBranchImmediate (sim_cpu *cpu) |
| 13423 | { |
| 13424 | /* instr[31,25] = 010 1010 |
| 13425 | instr[24] = op1; op => 00 ==> B.cond |
| 13426 | instr[23,5] = simm19 : signed offset counted in words |
| 13427 | instr[4] = op0 |
| 13428 | instr[3,0] = cond */ |
| 13429 | |
| 13430 | int32_t offset; |
| 13431 | uint32_t op = ((INSTR (24, 24) << 1) | INSTR (4, 4)); |
| 13432 | |
| 13433 | NYI_assert (31, 25, 0x2a); |
| 13434 | |
| 13435 | if (op != 0) |
| 13436 | HALT_UNALLOC; |
| 13437 | |
| 13438 | offset = simm32 (aarch64_get_instr (cpu), 23, 5) << 2; |
| 13439 | |
| 13440 | bcc (cpu, offset, INSTR (3, 0)); |
| 13441 | } |
| 13442 | |
| 13443 | static void |
| 13444 | dexBranchRegister (sim_cpu *cpu) |
| 13445 | { |
| 13446 | /* instr[31,25] = 110 1011 |
| 13447 | instr[24,21] = op : 0 ==> BR, 1 => BLR, 2 => RET, 3 => ERET, 4 => DRPS |
| 13448 | instr[20,16] = op2 : must be 11111 |
| 13449 | instr[15,10] = op3 : must be 000000 |
| 13450 | instr[4,0] = op2 : must be 11111. */ |
| 13451 | |
| 13452 | uint32_t op = INSTR (24, 21); |
| 13453 | uint32_t op2 = INSTR (20, 16); |
| 13454 | uint32_t op3 = INSTR (15, 10); |
| 13455 | uint32_t op4 = INSTR (4, 0); |
| 13456 | |
| 13457 | NYI_assert (31, 25, 0x6b); |
| 13458 | |
| 13459 | if (op2 != 0x1F || op3 != 0 || op4 != 0) |
| 13460 | HALT_UNALLOC; |
| 13461 | |
| 13462 | if (op == 0) |
| 13463 | br (cpu); |
| 13464 | |
| 13465 | else if (op == 1) |
| 13466 | blr (cpu); |
| 13467 | |
| 13468 | else if (op == 2) |
| 13469 | ret (cpu); |
| 13470 | |
| 13471 | else |
| 13472 | { |
| 13473 | /* ERET and DRPS accept 0b11111 for rn = instr [4,0]. */ |
| 13474 | /* anything else is unallocated. */ |
| 13475 | uint32_t rn = INSTR (4, 0); |
| 13476 | |
| 13477 | if (rn != 0x1f) |
| 13478 | HALT_UNALLOC; |
| 13479 | |
| 13480 | if (op == 4 || op == 5) |
| 13481 | HALT_NYI; |
| 13482 | |
| 13483 | HALT_UNALLOC; |
| 13484 | } |
| 13485 | } |
| 13486 | |
| 13487 | /* FIXME: We should get the Angel SWI values from ../../libgloss/aarch64/svc.h |
| 13488 | but this may not be available. So instead we define the values we need |
| 13489 | here. */ |
| 13490 | #define AngelSVC_Reason_Open 0x01 |
| 13491 | #define AngelSVC_Reason_Close 0x02 |
| 13492 | #define AngelSVC_Reason_Write 0x05 |
| 13493 | #define AngelSVC_Reason_Read 0x06 |
| 13494 | #define AngelSVC_Reason_IsTTY 0x09 |
| 13495 | #define AngelSVC_Reason_Seek 0x0A |
| 13496 | #define AngelSVC_Reason_FLen 0x0C |
| 13497 | #define AngelSVC_Reason_Remove 0x0E |
| 13498 | #define AngelSVC_Reason_Rename 0x0F |
| 13499 | #define AngelSVC_Reason_Clock 0x10 |
| 13500 | #define AngelSVC_Reason_Time 0x11 |
| 13501 | #define AngelSVC_Reason_System 0x12 |
| 13502 | #define AngelSVC_Reason_Errno 0x13 |
| 13503 | #define AngelSVC_Reason_GetCmdLine 0x15 |
| 13504 | #define AngelSVC_Reason_HeapInfo 0x16 |
| 13505 | #define AngelSVC_Reason_ReportException 0x18 |
| 13506 | #define AngelSVC_Reason_Elapsed 0x30 |
| 13507 | |
| 13508 | |
| 13509 | static void |
| 13510 | handle_halt (sim_cpu *cpu, uint32_t val) |
| 13511 | { |
| 13512 | uint64_t result = 0; |
| 13513 | |
| 13514 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13515 | if (val != 0xf000) |
| 13516 | { |
| 13517 | TRACE_SYSCALL (cpu, " HLT [0x%x]", val); |
| 13518 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu), |
| 13519 | sim_stopped, SIM_SIGTRAP); |
| 13520 | } |
| 13521 | |
| 13522 | /* We have encountered an Angel SVC call. See if we can process it. */ |
| 13523 | switch (aarch64_get_reg_u32 (cpu, 0, NO_SP)) |
| 13524 | { |
| 13525 | case AngelSVC_Reason_HeapInfo: |
| 13526 | { |
| 13527 | /* Get the values. */ |
| 13528 | uint64_t stack_top = aarch64_get_stack_start (cpu); |
| 13529 | uint64_t heap_base = aarch64_get_heap_start (cpu); |
| 13530 | |
| 13531 | /* Get the pointer */ |
| 13532 | uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK); |
| 13533 | ptr = aarch64_get_mem_u64 (cpu, ptr); |
| 13534 | |
| 13535 | /* Fill in the memory block. */ |
| 13536 | /* Start addr of heap. */ |
| 13537 | aarch64_set_mem_u64 (cpu, ptr + 0, heap_base); |
| 13538 | /* End addr of heap. */ |
| 13539 | aarch64_set_mem_u64 (cpu, ptr + 8, stack_top); |
| 13540 | /* Lowest stack addr. */ |
| 13541 | aarch64_set_mem_u64 (cpu, ptr + 16, heap_base); |
| 13542 | /* Initial stack addr. */ |
| 13543 | aarch64_set_mem_u64 (cpu, ptr + 24, stack_top); |
| 13544 | |
| 13545 | TRACE_SYSCALL (cpu, " AngelSVC: Get Heap Info"); |
| 13546 | } |
| 13547 | break; |
| 13548 | |
| 13549 | case AngelSVC_Reason_Open: |
| 13550 | { |
| 13551 | /* Get the pointer */ |
| 13552 | /* uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK);. */ |
| 13553 | /* FIXME: For now we just assume that we will only be asked |
| 13554 | to open the standard file descriptors. */ |
| 13555 | static int fd = 0; |
| 13556 | result = fd ++; |
| 13557 | |
| 13558 | TRACE_SYSCALL (cpu, " AngelSVC: Open file %d", fd - 1); |
| 13559 | } |
| 13560 | break; |
| 13561 | |
| 13562 | case AngelSVC_Reason_Close: |
| 13563 | { |
| 13564 | uint64_t fh = aarch64_get_reg_u64 (cpu, 1, SP_OK); |
| 13565 | TRACE_SYSCALL (cpu, " AngelSVC: Close file %d", (int) fh); |
| 13566 | result = 0; |
| 13567 | } |
| 13568 | break; |
| 13569 | |
| 13570 | case AngelSVC_Reason_Errno: |
| 13571 | result = 0; |
| 13572 | TRACE_SYSCALL (cpu, " AngelSVC: Get Errno"); |
| 13573 | break; |
| 13574 | |
| 13575 | case AngelSVC_Reason_Clock: |
| 13576 | result = |
| 13577 | #ifdef CLOCKS_PER_SEC |
| 13578 | (CLOCKS_PER_SEC >= 100) |
| 13579 | ? (clock () / (CLOCKS_PER_SEC / 100)) |
| 13580 | : ((clock () * 100) / CLOCKS_PER_SEC) |
| 13581 | #else |
| 13582 | /* Presume unix... clock() returns microseconds. */ |
| 13583 | (clock () / 10000) |
| 13584 | #endif |
| 13585 | ; |
| 13586 | TRACE_SYSCALL (cpu, " AngelSVC: Get Clock"); |
| 13587 | break; |
| 13588 | |
| 13589 | case AngelSVC_Reason_GetCmdLine: |
| 13590 | { |
| 13591 | /* Get the pointer */ |
| 13592 | uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK); |
| 13593 | ptr = aarch64_get_mem_u64 (cpu, ptr); |
| 13594 | |
| 13595 | /* FIXME: No command line for now. */ |
| 13596 | aarch64_set_mem_u64 (cpu, ptr, 0); |
| 13597 | TRACE_SYSCALL (cpu, " AngelSVC: Get Command Line"); |
| 13598 | } |
| 13599 | break; |
| 13600 | |
| 13601 | case AngelSVC_Reason_IsTTY: |
| 13602 | result = 1; |
| 13603 | TRACE_SYSCALL (cpu, " AngelSVC: IsTTY ?"); |
| 13604 | break; |
| 13605 | |
| 13606 | case AngelSVC_Reason_Write: |
| 13607 | { |
| 13608 | /* Get the pointer */ |
| 13609 | uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK); |
| 13610 | /* Get the write control block. */ |
| 13611 | uint64_t fd = aarch64_get_mem_u64 (cpu, ptr); |
| 13612 | uint64_t buf = aarch64_get_mem_u64 (cpu, ptr + 8); |
| 13613 | uint64_t len = aarch64_get_mem_u64 (cpu, ptr + 16); |
| 13614 | |
| 13615 | TRACE_SYSCALL (cpu, "write of %" PRIx64 " bytes from %" |
| 13616 | PRIx64 " on descriptor %" PRIx64, |
| 13617 | len, buf, fd); |
| 13618 | |
| 13619 | if (len > 1280) |
| 13620 | { |
| 13621 | TRACE_SYSCALL (cpu, |
| 13622 | " AngelSVC: Write: Suspiciously long write: %ld", |
| 13623 | (long) len); |
| 13624 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu), |
| 13625 | sim_stopped, SIM_SIGBUS); |
| 13626 | } |
| 13627 | else if (fd == 1) |
| 13628 | { |
| 13629 | printf ("%.*s", (int) len, aarch64_get_mem_ptr (cpu, buf)); |
| 13630 | } |
| 13631 | else if (fd == 2) |
| 13632 | { |
| 13633 | TRACE (cpu, 0, "\n"); |
| 13634 | sim_io_eprintf (CPU_STATE (cpu), "%.*s", |
| 13635 | (int) len, aarch64_get_mem_ptr (cpu, buf)); |
| 13636 | TRACE (cpu, 0, "\n"); |
| 13637 | } |
| 13638 | else |
| 13639 | { |
| 13640 | TRACE_SYSCALL (cpu, |
| 13641 | " AngelSVC: Write: Unexpected file handle: %d", |
| 13642 | (int) fd); |
| 13643 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu), |
| 13644 | sim_stopped, SIM_SIGABRT); |
| 13645 | } |
| 13646 | } |
| 13647 | break; |
| 13648 | |
| 13649 | case AngelSVC_Reason_ReportException: |
| 13650 | { |
| 13651 | /* Get the pointer */ |
| 13652 | uint64_t ptr = aarch64_get_reg_u64 (cpu, 1, SP_OK); |
| 13653 | /*ptr = aarch64_get_mem_u64 (cpu, ptr);. */ |
| 13654 | uint64_t type = aarch64_get_mem_u64 (cpu, ptr); |
| 13655 | uint64_t state = aarch64_get_mem_u64 (cpu, ptr + 8); |
| 13656 | |
| 13657 | TRACE_SYSCALL (cpu, |
| 13658 | "Angel Exception: type 0x%" PRIx64 " state %" PRIx64, |
| 13659 | type, state); |
| 13660 | |
| 13661 | if (type == 0x20026) |
| 13662 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu), |
| 13663 | sim_exited, state); |
| 13664 | else |
| 13665 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu), |
| 13666 | sim_stopped, SIM_SIGINT); |
| 13667 | } |
| 13668 | break; |
| 13669 | |
| 13670 | case AngelSVC_Reason_Read: |
| 13671 | case AngelSVC_Reason_FLen: |
| 13672 | case AngelSVC_Reason_Seek: |
| 13673 | case AngelSVC_Reason_Remove: |
| 13674 | case AngelSVC_Reason_Time: |
| 13675 | case AngelSVC_Reason_System: |
| 13676 | case AngelSVC_Reason_Rename: |
| 13677 | case AngelSVC_Reason_Elapsed: |
| 13678 | default: |
| 13679 | TRACE_SYSCALL (cpu, " HLT [Unknown angel %x]", |
| 13680 | aarch64_get_reg_u32 (cpu, 0, NO_SP)); |
| 13681 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu), |
| 13682 | sim_stopped, SIM_SIGTRAP); |
| 13683 | } |
| 13684 | |
| 13685 | aarch64_set_reg_u64 (cpu, 0, NO_SP, result); |
| 13686 | } |
| 13687 | |
| 13688 | static void |
| 13689 | dexExcpnGen (sim_cpu *cpu) |
| 13690 | { |
| 13691 | /* instr[31:24] = 11010100 |
| 13692 | instr[23,21] = opc : 000 ==> GEN EXCPN, 001 ==> BRK |
| 13693 | 010 ==> HLT, 101 ==> DBG GEN EXCPN |
| 13694 | instr[20,5] = imm16 |
| 13695 | instr[4,2] = opc2 000 ==> OK, ow ==> UNALLOC |
| 13696 | instr[1,0] = LL : discriminates opc */ |
| 13697 | |
| 13698 | uint32_t opc = INSTR (23, 21); |
| 13699 | uint32_t imm16 = INSTR (20, 5); |
| 13700 | uint32_t opc2 = INSTR (4, 2); |
| 13701 | uint32_t LL; |
| 13702 | |
| 13703 | NYI_assert (31, 24, 0xd4); |
| 13704 | |
| 13705 | if (opc2 != 0) |
| 13706 | HALT_UNALLOC; |
| 13707 | |
| 13708 | LL = INSTR (1, 0); |
| 13709 | |
| 13710 | /* We only implement HLT and BRK for now. */ |
| 13711 | if (opc == 1 && LL == 0) |
| 13712 | { |
| 13713 | TRACE_EVENTS (cpu, " BRK [0x%x]", imm16); |
| 13714 | sim_engine_halt (CPU_STATE (cpu), cpu, NULL, aarch64_get_PC (cpu), |
| 13715 | sim_exited, aarch64_get_reg_s32 (cpu, R0, SP_OK)); |
| 13716 | } |
| 13717 | |
| 13718 | if (opc == 2 && LL == 0) |
| 13719 | handle_halt (cpu, imm16); |
| 13720 | |
| 13721 | else if (opc == 0 || opc == 5) |
| 13722 | HALT_NYI; |
| 13723 | |
| 13724 | else |
| 13725 | HALT_UNALLOC; |
| 13726 | } |
| 13727 | |
| 13728 | /* Stub for accessing system registers. */ |
| 13729 | |
| 13730 | static uint64_t |
| 13731 | system_get (sim_cpu *cpu, unsigned op0, unsigned op1, unsigned crn, |
| 13732 | unsigned crm, unsigned op2) |
| 13733 | { |
| 13734 | if (crn == 0 && op1 == 3 && crm == 0 && op2 == 7) |
| 13735 | /* DCZID_EL0 - the Data Cache Zero ID register. |
| 13736 | We do not support DC ZVA at the moment, so |
| 13737 | we return a value with the disable bit set. |
| 13738 | We implement support for the DCZID register since |
| 13739 | it is used by the C library's memset function. */ |
| 13740 | return ((uint64_t) 1) << 4; |
| 13741 | |
| 13742 | if (crn == 0 && op1 == 3 && crm == 0 && op2 == 1) |
| 13743 | /* Cache Type Register. */ |
| 13744 | return 0x80008000UL; |
| 13745 | |
| 13746 | if (crn == 13 && op1 == 3 && crm == 0 && op2 == 2) |
| 13747 | /* TPIDR_EL0 - thread pointer id. */ |
| 13748 | return aarch64_get_thread_id (cpu); |
| 13749 | |
| 13750 | if (op1 == 3 && crm == 4 && op2 == 0) |
| 13751 | return aarch64_get_FPCR (cpu); |
| 13752 | |
| 13753 | if (op1 == 3 && crm == 4 && op2 == 1) |
| 13754 | return aarch64_get_FPSR (cpu); |
| 13755 | |
| 13756 | else if (op1 == 3 && crm == 2 && op2 == 0) |
| 13757 | return aarch64_get_CPSR (cpu); |
| 13758 | |
| 13759 | HALT_NYI; |
| 13760 | } |
| 13761 | |
| 13762 | static void |
| 13763 | system_set (sim_cpu *cpu, unsigned op0, unsigned op1, unsigned crn, |
| 13764 | unsigned crm, unsigned op2, uint64_t val) |
| 13765 | { |
| 13766 | if (op1 == 3 && crm == 4 && op2 == 0) |
| 13767 | aarch64_set_FPCR (cpu, val); |
| 13768 | |
| 13769 | else if (op1 == 3 && crm == 4 && op2 == 1) |
| 13770 | aarch64_set_FPSR (cpu, val); |
| 13771 | |
| 13772 | else if (op1 == 3 && crm == 2 && op2 == 0) |
| 13773 | aarch64_set_CPSR (cpu, val); |
| 13774 | |
| 13775 | else |
| 13776 | HALT_NYI; |
| 13777 | } |
| 13778 | |
| 13779 | static void |
| 13780 | do_mrs (sim_cpu *cpu) |
| 13781 | { |
| 13782 | /* instr[31:20] = 1101 0101 0001 1 |
| 13783 | instr[19] = op0 |
| 13784 | instr[18,16] = op1 |
| 13785 | instr[15,12] = CRn |
| 13786 | instr[11,8] = CRm |
| 13787 | instr[7,5] = op2 |
| 13788 | instr[4,0] = Rt */ |
| 13789 | unsigned sys_op0 = INSTR (19, 19) + 2; |
| 13790 | unsigned sys_op1 = INSTR (18, 16); |
| 13791 | unsigned sys_crn = INSTR (15, 12); |
| 13792 | unsigned sys_crm = INSTR (11, 8); |
| 13793 | unsigned sys_op2 = INSTR (7, 5); |
| 13794 | unsigned rt = INSTR (4, 0); |
| 13795 | |
| 13796 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13797 | aarch64_set_reg_u64 (cpu, rt, NO_SP, |
| 13798 | system_get (cpu, sys_op0, sys_op1, sys_crn, sys_crm, sys_op2)); |
| 13799 | } |
| 13800 | |
| 13801 | static void |
| 13802 | do_MSR_immediate (sim_cpu *cpu) |
| 13803 | { |
| 13804 | /* instr[31:19] = 1101 0101 0000 0 |
| 13805 | instr[18,16] = op1 |
| 13806 | instr[15,12] = 0100 |
| 13807 | instr[11,8] = CRm |
| 13808 | instr[7,5] = op2 |
| 13809 | instr[4,0] = 1 1111 */ |
| 13810 | |
| 13811 | unsigned op1 = INSTR (18, 16); |
| 13812 | /*unsigned crm = INSTR (11, 8);*/ |
| 13813 | unsigned op2 = INSTR (7, 5); |
| 13814 | |
| 13815 | NYI_assert (31, 19, 0x1AA0); |
| 13816 | NYI_assert (15, 12, 0x4); |
| 13817 | NYI_assert (4, 0, 0x1F); |
| 13818 | |
| 13819 | if (op1 == 0) |
| 13820 | { |
| 13821 | if (op2 == 5) |
| 13822 | HALT_NYI; /* set SPSel. */ |
| 13823 | else |
| 13824 | HALT_UNALLOC; |
| 13825 | } |
| 13826 | else if (op1 == 3) |
| 13827 | { |
| 13828 | if (op2 == 6) |
| 13829 | HALT_NYI; /* set DAIFset. */ |
| 13830 | else if (op2 == 7) |
| 13831 | HALT_NYI; /* set DAIFclr. */ |
| 13832 | else |
| 13833 | HALT_UNALLOC; |
| 13834 | } |
| 13835 | else |
| 13836 | HALT_UNALLOC; |
| 13837 | } |
| 13838 | |
| 13839 | static void |
| 13840 | do_MSR_reg (sim_cpu *cpu) |
| 13841 | { |
| 13842 | /* instr[31:20] = 1101 0101 0001 |
| 13843 | instr[19] = op0 |
| 13844 | instr[18,16] = op1 |
| 13845 | instr[15,12] = CRn |
| 13846 | instr[11,8] = CRm |
| 13847 | instr[7,5] = op2 |
| 13848 | instr[4,0] = Rt */ |
| 13849 | |
| 13850 | unsigned sys_op0 = INSTR (19, 19) + 2; |
| 13851 | unsigned sys_op1 = INSTR (18, 16); |
| 13852 | unsigned sys_crn = INSTR (15, 12); |
| 13853 | unsigned sys_crm = INSTR (11, 8); |
| 13854 | unsigned sys_op2 = INSTR (7, 5); |
| 13855 | unsigned rt = INSTR (4, 0); |
| 13856 | |
| 13857 | NYI_assert (31, 20, 0xD51); |
| 13858 | |
| 13859 | TRACE_DECODE (cpu, "emulated at line %d", __LINE__); |
| 13860 | system_set (cpu, sys_op0, sys_op1, sys_crn, sys_crm, sys_op2, |
| 13861 | aarch64_get_reg_u64 (cpu, rt, NO_SP)); |
| 13862 | } |
| 13863 | |
| 13864 | static void |
| 13865 | do_SYS (sim_cpu *cpu) |
| 13866 | { |
| 13867 | /* instr[31,19] = 1101 0101 0000 1 |
| 13868 | instr[18,16] = op1 |
| 13869 | instr[15,12] = CRn |
| 13870 | instr[11,8] = CRm |
| 13871 | instr[7,5] = op2 |
| 13872 | instr[4,0] = Rt */ |
| 13873 | NYI_assert (31, 19, 0x1AA1); |
| 13874 | |
| 13875 | /* FIXME: For now we just silently accept system ops. */ |
| 13876 | } |
| 13877 | |
| 13878 | static void |
| 13879 | dexSystem (sim_cpu *cpu) |
| 13880 | { |
| 13881 | /* instr[31:22] = 1101 01010 0 |
| 13882 | instr[21] = L |
| 13883 | instr[20,19] = op0 |
| 13884 | instr[18,16] = op1 |
| 13885 | instr[15,12] = CRn |
| 13886 | instr[11,8] = CRm |
| 13887 | instr[7,5] = op2 |
| 13888 | instr[4,0] = uimm5 */ |
| 13889 | |
| 13890 | /* We are interested in HINT, DSB, DMB and ISB |
| 13891 | |
| 13892 | Hint #0 encodes NOOP (this is the only hint we care about) |
| 13893 | L == 0, op0 == 0, op1 = 011, CRn = 0010, Rt = 11111, |
| 13894 | CRm op2 != 0000 000 OR CRm op2 == 0000 000 || CRm op > 0000 101 |
| 13895 | |
| 13896 | DSB, DMB, ISB are data store barrier, data memory barrier and |
| 13897 | instruction store barrier, respectively, where |
| 13898 | |
| 13899 | L == 0, op0 == 0, op1 = 011, CRn = 0011, Rt = 11111, |
| 13900 | op2 : DSB ==> 100, DMB ==> 101, ISB ==> 110 |
| 13901 | CRm<3:2> ==> domain, CRm<1:0> ==> types, |
| 13902 | domain : 00 ==> OuterShareable, 01 ==> Nonshareable, |
| 13903 | 10 ==> InerShareable, 11 ==> FullSystem |
| 13904 | types : 01 ==> Reads, 10 ==> Writes, |
| 13905 | 11 ==> All, 00 ==> All (domain == FullSystem). */ |
| 13906 | |
| 13907 | unsigned rt = INSTR (4, 0); |
| 13908 | |
| 13909 | NYI_assert (31, 22, 0x354); |
| 13910 | |
| 13911 | switch (INSTR (21, 12)) |
| 13912 | { |
| 13913 | case 0x032: |
| 13914 | if (rt == 0x1F) |
| 13915 | { |
| 13916 | /* NOP has CRm != 0000 OR. */ |
| 13917 | /* (CRm == 0000 AND (op2 == 000 OR op2 > 101)). */ |
| 13918 | uint32_t crm = INSTR (11, 8); |
| 13919 | uint32_t op2 = INSTR (7, 5); |
| 13920 | |
| 13921 | if (crm != 0 || (op2 == 0 || op2 > 5)) |
| 13922 | { |
| 13923 | /* Actually call nop method so we can reimplement it later. */ |
| 13924 | nop (cpu); |
| 13925 | return; |
| 13926 | } |
| 13927 | } |
| 13928 | HALT_NYI; |
| 13929 | |
| 13930 | case 0x033: |
| 13931 | { |
| 13932 | uint32_t op2 = INSTR (7, 5); |
| 13933 | |
| 13934 | switch (op2) |
| 13935 | { |
| 13936 | case 2: HALT_NYI; |
| 13937 | case 4: dsb (cpu); return; |
| 13938 | case 5: dmb (cpu); return; |
| 13939 | case 6: isb (cpu); return; |
| 13940 | default: HALT_UNALLOC; |
| 13941 | } |
| 13942 | } |
| 13943 | |
| 13944 | case 0x3B0: |
| 13945 | case 0x3B4: |
| 13946 | case 0x3BD: |
| 13947 | do_mrs (cpu); |
| 13948 | return; |
| 13949 | |
| 13950 | case 0x0B7: |
| 13951 | do_SYS (cpu); /* DC is an alias of SYS. */ |
| 13952 | return; |
| 13953 | |
| 13954 | default: |
| 13955 | if (INSTR (21, 20) == 0x1) |
| 13956 | do_MSR_reg (cpu); |
| 13957 | else if (INSTR (21, 19) == 0 && INSTR (15, 12) == 0x4) |
| 13958 | do_MSR_immediate (cpu); |
| 13959 | else |
| 13960 | HALT_NYI; |
| 13961 | return; |
| 13962 | } |
| 13963 | } |
| 13964 | |
| 13965 | static void |
| 13966 | dexBr (sim_cpu *cpu) |
| 13967 | { |
| 13968 | /* uint32_t group = dispatchGroup (aarch64_get_instr (cpu)); |
| 13969 | assert group == GROUP_BREXSYS_1010 || group == GROUP_BREXSYS_1011 |
| 13970 | bits [31,29] of a BrExSys are the secondary dispatch vector. */ |
| 13971 | uint32_t group2 = dispatchBrExSys (aarch64_get_instr (cpu)); |
| 13972 | |
| 13973 | switch (group2) |
| 13974 | { |
| 13975 | case BR_IMM_000: |
| 13976 | return dexBranchImmediate (cpu); |
| 13977 | |
| 13978 | case BR_IMMCMP_001: |
| 13979 | /* Compare has bit 25 clear while test has it set. */ |
| 13980 | if (!INSTR (25, 25)) |
| 13981 | dexCompareBranchImmediate (cpu); |
| 13982 | else |
| 13983 | dexTestBranchImmediate (cpu); |
| 13984 | return; |
| 13985 | |
| 13986 | case BR_IMMCOND_010: |
| 13987 | /* This is a conditional branch if bit 25 is clear otherwise |
| 13988 | unallocated. */ |
| 13989 | if (!INSTR (25, 25)) |
| 13990 | dexCondBranchImmediate (cpu); |
| 13991 | else |
| 13992 | HALT_UNALLOC; |
| 13993 | return; |
| 13994 | |
| 13995 | case BR_UNALLOC_011: |
| 13996 | HALT_UNALLOC; |
| 13997 | |
| 13998 | case BR_IMM_100: |
| 13999 | dexBranchImmediate (cpu); |
| 14000 | return; |
| 14001 | |
| 14002 | case BR_IMMCMP_101: |
| 14003 | /* Compare has bit 25 clear while test has it set. */ |
| 14004 | if (!INSTR (25, 25)) |
| 14005 | dexCompareBranchImmediate (cpu); |
| 14006 | else |
| 14007 | dexTestBranchImmediate (cpu); |
| 14008 | return; |
| 14009 | |
| 14010 | case BR_REG_110: |
| 14011 | /* Unconditional branch reg has bit 25 set. */ |
| 14012 | if (INSTR (25, 25)) |
| 14013 | dexBranchRegister (cpu); |
| 14014 | |
| 14015 | /* This includes both Excpn Gen, System and unalloc operations. |
| 14016 | We need to decode the Excpn Gen operation BRK so we can plant |
| 14017 | debugger entry points. |
| 14018 | Excpn Gen operations have instr [24] = 0. |
| 14019 | we need to decode at least one of the System operations NOP |
| 14020 | which is an alias for HINT #0. |
| 14021 | System operations have instr [24,22] = 100. */ |
| 14022 | else if (INSTR (24, 24) == 0) |
| 14023 | dexExcpnGen (cpu); |
| 14024 | |
| 14025 | else if (INSTR (24, 22) == 4) |
| 14026 | dexSystem (cpu); |
| 14027 | |
| 14028 | else |
| 14029 | HALT_UNALLOC; |
| 14030 | |
| 14031 | return; |
| 14032 | |
| 14033 | case BR_UNALLOC_111: |
| 14034 | HALT_UNALLOC; |
| 14035 | |
| 14036 | default: |
| 14037 | /* Should never reach here. */ |
| 14038 | HALT_NYI; |
| 14039 | } |
| 14040 | } |
| 14041 | |
| 14042 | static void |
| 14043 | aarch64_decode_and_execute (sim_cpu *cpu, uint64_t pc) |
| 14044 | { |
| 14045 | /* We need to check if gdb wants an in here. */ |
| 14046 | /* checkBreak (cpu);. */ |
| 14047 | |
| 14048 | uint64_t group = dispatchGroup (aarch64_get_instr (cpu)); |
| 14049 | |
| 14050 | switch (group) |
| 14051 | { |
| 14052 | case GROUP_PSEUDO_0000: dexPseudo (cpu); break; |
| 14053 | case GROUP_LDST_0100: dexLdSt (cpu); break; |
| 14054 | case GROUP_DPREG_0101: dexDPReg (cpu); break; |
| 14055 | case GROUP_LDST_0110: dexLdSt (cpu); break; |
| 14056 | case GROUP_ADVSIMD_0111: dexAdvSIMD0 (cpu); break; |
| 14057 | case GROUP_DPIMM_1000: dexDPImm (cpu); break; |
| 14058 | case GROUP_DPIMM_1001: dexDPImm (cpu); break; |
| 14059 | case GROUP_BREXSYS_1010: dexBr (cpu); break; |
| 14060 | case GROUP_BREXSYS_1011: dexBr (cpu); break; |
| 14061 | case GROUP_LDST_1100: dexLdSt (cpu); break; |
| 14062 | case GROUP_DPREG_1101: dexDPReg (cpu); break; |
| 14063 | case GROUP_LDST_1110: dexLdSt (cpu); break; |
| 14064 | case GROUP_ADVSIMD_1111: dexAdvSIMD1 (cpu); break; |
| 14065 | |
| 14066 | case GROUP_UNALLOC_0001: |
| 14067 | case GROUP_UNALLOC_0010: |
| 14068 | case GROUP_UNALLOC_0011: |
| 14069 | HALT_UNALLOC; |
| 14070 | |
| 14071 | default: |
| 14072 | /* Should never reach here. */ |
| 14073 | HALT_NYI; |
| 14074 | } |
| 14075 | } |
| 14076 | |
| 14077 | static bfd_boolean |
| 14078 | aarch64_step (sim_cpu *cpu) |
| 14079 | { |
| 14080 | uint64_t pc = aarch64_get_PC (cpu); |
| 14081 | |
| 14082 | if (pc == TOP_LEVEL_RETURN_PC) |
| 14083 | return FALSE; |
| 14084 | |
| 14085 | aarch64_set_next_PC (cpu, pc + 4); |
| 14086 | |
| 14087 | /* Code is always little-endian. */ |
| 14088 | sim_core_read_buffer (CPU_STATE (cpu), cpu, read_map, |
| 14089 | & aarch64_get_instr (cpu), pc, 4); |
| 14090 | aarch64_get_instr (cpu) = endian_le2h_4 (aarch64_get_instr (cpu)); |
| 14091 | |
| 14092 | TRACE_INSN (cpu, " pc = %" PRIx64 " instr = %08x", pc, |
| 14093 | aarch64_get_instr (cpu)); |
| 14094 | TRACE_DISASM (cpu, pc); |
| 14095 | |
| 14096 | aarch64_decode_and_execute (cpu, pc); |
| 14097 | |
| 14098 | return TRUE; |
| 14099 | } |
| 14100 | |
| 14101 | void |
| 14102 | aarch64_run (SIM_DESC sd) |
| 14103 | { |
| 14104 | sim_cpu *cpu = STATE_CPU (sd, 0); |
| 14105 | |
| 14106 | while (aarch64_step (cpu)) |
| 14107 | aarch64_update_PC (cpu); |
| 14108 | |
| 14109 | sim_engine_halt (sd, NULL, NULL, aarch64_get_PC (cpu), |
| 14110 | sim_exited, aarch64_get_reg_s32 (cpu, R0, SP_OK)); |
| 14111 | } |
| 14112 | |
| 14113 | void |
| 14114 | aarch64_init (sim_cpu *cpu, uint64_t pc) |
| 14115 | { |
| 14116 | uint64_t sp = aarch64_get_stack_start (cpu); |
| 14117 | |
| 14118 | /* Install SP, FP and PC and set LR to -20 |
| 14119 | so we can detect a top-level return. */ |
| 14120 | aarch64_set_reg_u64 (cpu, SP, SP_OK, sp); |
| 14121 | aarch64_set_reg_u64 (cpu, FP, SP_OK, sp); |
| 14122 | aarch64_set_reg_u64 (cpu, LR, SP_OK, TOP_LEVEL_RETURN_PC); |
| 14123 | aarch64_set_next_PC (cpu, pc); |
| 14124 | aarch64_update_PC (cpu); |
| 14125 | aarch64_init_LIT_table (); |
| 14126 | } |