| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: exoparg1 - AML execution - opcodes with 1 argument |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
| 44 | #include "acpi.h" |
| 45 | #include "accommon.h" |
| 46 | #include "acparser.h" |
| 47 | #include "acdispat.h" |
| 48 | #include "acinterp.h" |
| 49 | #include "amlcode.h" |
| 50 | #include "acnamesp.h" |
| 51 | |
| 52 | |
| 53 | #define _COMPONENT ACPI_EXECUTER |
| 54 | ACPI_MODULE_NAME ("exoparg1" ) |
| 55 | |
| 56 | |
| 57 | /*! |
| 58 | * Naming convention for AML interpreter execution routines. |
| 59 | * |
| 60 | * The routines that begin execution of AML opcodes are named with a common |
| 61 | * convention based upon the number of arguments, the number of target operands, |
| 62 | * and whether or not a value is returned: |
| 63 | * |
| 64 | * AcpiExOpcode_xA_yT_zR |
| 65 | * |
| 66 | * Where: |
| 67 | * |
| 68 | * xA - ARGUMENTS: The number of arguments (input operands) that are |
| 69 | * required for this opcode type (0 through 6 args). |
| 70 | * yT - TARGETS: The number of targets (output operands) that are required |
| 71 | * for this opcode type (0, 1, or 2 targets). |
| 72 | * zR - RETURN VALUE: Indicates whether this opcode type returns a value |
| 73 | * as the function return (0 or 1). |
| 74 | * |
| 75 | * The AcpiExOpcode* functions are called via the Dispatcher component with |
| 76 | * fully resolved operands. |
| 77 | !*/ |
| 78 | |
| 79 | /******************************************************************************* |
| 80 | * |
| 81 | * FUNCTION: AcpiExOpcode_0A_0T_1R |
| 82 | * |
| 83 | * PARAMETERS: WalkState - Current state (contains AML opcode) |
| 84 | * |
| 85 | * RETURN: Status |
| 86 | * |
| 87 | * DESCRIPTION: Execute operator with no operands, one return value |
| 88 | * |
| 89 | ******************************************************************************/ |
| 90 | |
| 91 | ACPI_STATUS |
| 92 | AcpiExOpcode_0A_0T_1R ( |
| 93 | ACPI_WALK_STATE *WalkState) |
| 94 | { |
| 95 | ACPI_STATUS Status = AE_OK; |
| 96 | ACPI_OPERAND_OBJECT *ReturnDesc = NULL; |
| 97 | |
| 98 | |
| 99 | ACPI_FUNCTION_TRACE_STR (ExOpcode_0A_0T_1R, |
| 100 | AcpiPsGetOpcodeName (WalkState->Opcode)); |
| 101 | |
| 102 | |
| 103 | /* Examine the AML opcode */ |
| 104 | |
| 105 | switch (WalkState->Opcode) |
| 106 | { |
| 107 | case AML_TIMER_OP: /* Timer () */ |
| 108 | |
| 109 | /* Create a return object of type Integer */ |
| 110 | |
| 111 | ReturnDesc = AcpiUtCreateIntegerObject (AcpiOsGetTimer ()); |
| 112 | if (!ReturnDesc) |
| 113 | { |
| 114 | Status = AE_NO_MEMORY; |
| 115 | goto Cleanup; |
| 116 | } |
| 117 | break; |
| 118 | |
| 119 | default: /* Unknown opcode */ |
| 120 | |
| 121 | ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X" , |
| 122 | WalkState->Opcode)); |
| 123 | Status = AE_AML_BAD_OPCODE; |
| 124 | break; |
| 125 | } |
| 126 | |
| 127 | Cleanup: |
| 128 | |
| 129 | /* Delete return object on error */ |
| 130 | |
| 131 | if ((ACPI_FAILURE (Status)) || WalkState->ResultObj) |
| 132 | { |
| 133 | AcpiUtRemoveReference (ReturnDesc); |
| 134 | WalkState->ResultObj = NULL; |
| 135 | } |
| 136 | else |
| 137 | { |
| 138 | /* Save the return value */ |
| 139 | |
| 140 | WalkState->ResultObj = ReturnDesc; |
| 141 | } |
| 142 | |
| 143 | return_ACPI_STATUS (Status); |
| 144 | } |
| 145 | |
| 146 | |
| 147 | /******************************************************************************* |
| 148 | * |
| 149 | * FUNCTION: AcpiExOpcode_1A_0T_0R |
| 150 | * |
| 151 | * PARAMETERS: WalkState - Current state (contains AML opcode) |
| 152 | * |
| 153 | * RETURN: Status |
| 154 | * |
| 155 | * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on |
| 156 | * object stack |
| 157 | * |
| 158 | ******************************************************************************/ |
| 159 | |
| 160 | ACPI_STATUS |
| 161 | AcpiExOpcode_1A_0T_0R ( |
| 162 | ACPI_WALK_STATE *WalkState) |
| 163 | { |
| 164 | ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| 165 | ACPI_STATUS Status = AE_OK; |
| 166 | |
| 167 | |
| 168 | ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_0R, |
| 169 | AcpiPsGetOpcodeName (WalkState->Opcode)); |
| 170 | |
| 171 | |
| 172 | /* Examine the AML opcode */ |
| 173 | |
| 174 | switch (WalkState->Opcode) |
| 175 | { |
| 176 | case AML_RELEASE_OP: /* Release (MutexObject) */ |
| 177 | |
| 178 | Status = AcpiExReleaseMutex (Operand[0], WalkState); |
| 179 | break; |
| 180 | |
| 181 | case AML_RESET_OP: /* Reset (EventObject) */ |
| 182 | |
| 183 | Status = AcpiExSystemResetEvent (Operand[0]); |
| 184 | break; |
| 185 | |
| 186 | case AML_SIGNAL_OP: /* Signal (EventObject) */ |
| 187 | |
| 188 | Status = AcpiExSystemSignalEvent (Operand[0]); |
| 189 | break; |
| 190 | |
| 191 | case AML_SLEEP_OP: /* Sleep (MsecTime) */ |
| 192 | |
| 193 | Status = AcpiExSystemDoSleep (Operand[0]->Integer.Value); |
| 194 | break; |
| 195 | |
| 196 | case AML_STALL_OP: /* Stall (UsecTime) */ |
| 197 | |
| 198 | Status = AcpiExSystemDoStall ((UINT32) Operand[0]->Integer.Value); |
| 199 | break; |
| 200 | |
| 201 | case AML_UNLOAD_OP: /* Unload (Handle) */ |
| 202 | |
| 203 | Status = AcpiExUnloadTable (Operand[0]); |
| 204 | break; |
| 205 | |
| 206 | default: /* Unknown opcode */ |
| 207 | |
| 208 | ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X" , |
| 209 | WalkState->Opcode)); |
| 210 | Status = AE_AML_BAD_OPCODE; |
| 211 | break; |
| 212 | } |
| 213 | |
| 214 | return_ACPI_STATUS (Status); |
| 215 | } |
| 216 | |
| 217 | |
| 218 | /******************************************************************************* |
| 219 | * |
| 220 | * FUNCTION: AcpiExOpcode_1A_1T_0R |
| 221 | * |
| 222 | * PARAMETERS: WalkState - Current state (contains AML opcode) |
| 223 | * |
| 224 | * RETURN: Status |
| 225 | * |
| 226 | * DESCRIPTION: Execute opcode with one argument, one target, and no |
| 227 | * return value. |
| 228 | * |
| 229 | ******************************************************************************/ |
| 230 | |
| 231 | ACPI_STATUS |
| 232 | AcpiExOpcode_1A_1T_0R ( |
| 233 | ACPI_WALK_STATE *WalkState) |
| 234 | { |
| 235 | ACPI_STATUS Status = AE_OK; |
| 236 | ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| 237 | |
| 238 | |
| 239 | ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_0R, |
| 240 | AcpiPsGetOpcodeName (WalkState->Opcode)); |
| 241 | |
| 242 | |
| 243 | /* Examine the AML opcode */ |
| 244 | |
| 245 | switch (WalkState->Opcode) |
| 246 | { |
| 247 | case AML_LOAD_OP: |
| 248 | |
| 249 | Status = AcpiExLoadOp (Operand[0], Operand[1], WalkState); |
| 250 | break; |
| 251 | |
| 252 | default: /* Unknown opcode */ |
| 253 | |
| 254 | ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X" , |
| 255 | WalkState->Opcode)); |
| 256 | Status = AE_AML_BAD_OPCODE; |
| 257 | goto Cleanup; |
| 258 | } |
| 259 | |
| 260 | |
| 261 | Cleanup: |
| 262 | |
| 263 | return_ACPI_STATUS (Status); |
| 264 | } |
| 265 | |
| 266 | |
| 267 | /******************************************************************************* |
| 268 | * |
| 269 | * FUNCTION: AcpiExOpcode_1A_1T_1R |
| 270 | * |
| 271 | * PARAMETERS: WalkState - Current state (contains AML opcode) |
| 272 | * |
| 273 | * RETURN: Status |
| 274 | * |
| 275 | * DESCRIPTION: Execute opcode with one argument, one target, and a |
| 276 | * return value. |
| 277 | * |
| 278 | ******************************************************************************/ |
| 279 | |
| 280 | ACPI_STATUS |
| 281 | AcpiExOpcode_1A_1T_1R ( |
| 282 | ACPI_WALK_STATE *WalkState) |
| 283 | { |
| 284 | ACPI_STATUS Status = AE_OK; |
| 285 | ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| 286 | ACPI_OPERAND_OBJECT *ReturnDesc = NULL; |
| 287 | ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL; |
| 288 | UINT32 Temp32; |
| 289 | UINT32 i; |
| 290 | UINT64 PowerOfTen; |
| 291 | UINT64 Digit; |
| 292 | |
| 293 | |
| 294 | ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_1R, |
| 295 | AcpiPsGetOpcodeName (WalkState->Opcode)); |
| 296 | |
| 297 | |
| 298 | /* Examine the AML opcode */ |
| 299 | |
| 300 | switch (WalkState->Opcode) |
| 301 | { |
| 302 | case AML_BIT_NOT_OP: |
| 303 | case AML_FIND_SET_LEFT_BIT_OP: |
| 304 | case AML_FIND_SET_RIGHT_BIT_OP: |
| 305 | case AML_FROM_BCD_OP: |
| 306 | case AML_TO_BCD_OP: |
| 307 | case AML_COND_REF_OF_OP: |
| 308 | |
| 309 | /* Create a return object of type Integer for these opcodes */ |
| 310 | |
| 311 | ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); |
| 312 | if (!ReturnDesc) |
| 313 | { |
| 314 | Status = AE_NO_MEMORY; |
| 315 | goto Cleanup; |
| 316 | } |
| 317 | |
| 318 | switch (WalkState->Opcode) |
| 319 | { |
| 320 | case AML_BIT_NOT_OP: /* Not (Operand, Result) */ |
| 321 | |
| 322 | ReturnDesc->Integer.Value = ~Operand[0]->Integer.Value; |
| 323 | break; |
| 324 | |
| 325 | case AML_FIND_SET_LEFT_BIT_OP: /* FindSetLeftBit (Operand, Result) */ |
| 326 | |
| 327 | ReturnDesc->Integer.Value = Operand[0]->Integer.Value; |
| 328 | |
| 329 | /* |
| 330 | * Acpi specification describes Integer type as a little |
| 331 | * endian unsigned value, so this boundary condition is valid. |
| 332 | */ |
| 333 | for (Temp32 = 0; ReturnDesc->Integer.Value && |
| 334 | Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32) |
| 335 | { |
| 336 | ReturnDesc->Integer.Value >>= 1; |
| 337 | } |
| 338 | |
| 339 | ReturnDesc->Integer.Value = Temp32; |
| 340 | break; |
| 341 | |
| 342 | case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */ |
| 343 | |
| 344 | ReturnDesc->Integer.Value = Operand[0]->Integer.Value; |
| 345 | |
| 346 | /* |
| 347 | * The Acpi specification describes Integer type as a little |
| 348 | * endian unsigned value, so this boundary condition is valid. |
| 349 | */ |
| 350 | for (Temp32 = 0; ReturnDesc->Integer.Value && |
| 351 | Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32) |
| 352 | { |
| 353 | ReturnDesc->Integer.Value <<= 1; |
| 354 | } |
| 355 | |
| 356 | /* Since the bit position is one-based, subtract from 33 (65) */ |
| 357 | |
| 358 | ReturnDesc->Integer.Value = |
| 359 | Temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - Temp32; |
| 360 | break; |
| 361 | |
| 362 | case AML_FROM_BCD_OP: /* FromBcd (BCDValue, Result) */ |
| 363 | /* |
| 364 | * The 64-bit ACPI integer can hold 16 4-bit BCD characters |
| 365 | * (if table is 32-bit, integer can hold 8 BCD characters) |
| 366 | * Convert each 4-bit BCD value |
| 367 | */ |
| 368 | PowerOfTen = 1; |
| 369 | ReturnDesc->Integer.Value = 0; |
| 370 | Digit = Operand[0]->Integer.Value; |
| 371 | |
| 372 | /* Convert each BCD digit (each is one nybble wide) */ |
| 373 | |
| 374 | for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++) |
| 375 | { |
| 376 | /* Get the least significant 4-bit BCD digit */ |
| 377 | |
| 378 | Temp32 = ((UINT32) Digit) & 0xF; |
| 379 | |
| 380 | /* Check the range of the digit */ |
| 381 | |
| 382 | if (Temp32 > 9) |
| 383 | { |
| 384 | ACPI_ERROR ((AE_INFO, |
| 385 | "BCD digit too large (not decimal): 0x%X" , |
| 386 | Temp32)); |
| 387 | |
| 388 | Status = AE_AML_NUMERIC_OVERFLOW; |
| 389 | goto Cleanup; |
| 390 | } |
| 391 | |
| 392 | /* Sum the digit into the result with the current power of 10 */ |
| 393 | |
| 394 | ReturnDesc->Integer.Value += |
| 395 | (((UINT64) Temp32) * PowerOfTen); |
| 396 | |
| 397 | /* Shift to next BCD digit */ |
| 398 | |
| 399 | Digit >>= 4; |
| 400 | |
| 401 | /* Next power of 10 */ |
| 402 | |
| 403 | PowerOfTen *= 10; |
| 404 | } |
| 405 | break; |
| 406 | |
| 407 | case AML_TO_BCD_OP: /* ToBcd (Operand, Result) */ |
| 408 | |
| 409 | ReturnDesc->Integer.Value = 0; |
| 410 | Digit = Operand[0]->Integer.Value; |
| 411 | |
| 412 | /* Each BCD digit is one nybble wide */ |
| 413 | |
| 414 | for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++) |
| 415 | { |
| 416 | (void) AcpiUtShortDivide (Digit, 10, &Digit, &Temp32); |
| 417 | |
| 418 | /* |
| 419 | * Insert the BCD digit that resides in the |
| 420 | * remainder from above |
| 421 | */ |
| 422 | ReturnDesc->Integer.Value |= |
| 423 | (((UINT64) Temp32) << ACPI_MUL_4 (i)); |
| 424 | } |
| 425 | |
| 426 | /* Overflow if there is any data left in Digit */ |
| 427 | |
| 428 | if (Digit > 0) |
| 429 | { |
| 430 | ACPI_ERROR ((AE_INFO, |
| 431 | "Integer too large to convert to BCD: 0x%8.8X%8.8X" , |
| 432 | ACPI_FORMAT_UINT64 (Operand[0]->Integer.Value))); |
| 433 | Status = AE_AML_NUMERIC_OVERFLOW; |
| 434 | goto Cleanup; |
| 435 | } |
| 436 | break; |
| 437 | |
| 438 | case AML_COND_REF_OF_OP: /* CondRefOf (SourceObject, Result) */ |
| 439 | /* |
| 440 | * This op is a little strange because the internal return value is |
| 441 | * different than the return value stored in the result descriptor |
| 442 | * (There are really two return values) |
| 443 | */ |
| 444 | if ((ACPI_NAMESPACE_NODE *) Operand[0] == AcpiGbl_RootNode) |
| 445 | { |
| 446 | /* |
| 447 | * This means that the object does not exist in the namespace, |
| 448 | * return FALSE |
| 449 | */ |
| 450 | ReturnDesc->Integer.Value = 0; |
| 451 | goto Cleanup; |
| 452 | } |
| 453 | |
| 454 | /* Get the object reference, store it, and remove our reference */ |
| 455 | |
| 456 | Status = AcpiExGetObjectReference (Operand[0], |
| 457 | &ReturnDesc2, WalkState); |
| 458 | if (ACPI_FAILURE (Status)) |
| 459 | { |
| 460 | goto Cleanup; |
| 461 | } |
| 462 | |
| 463 | Status = AcpiExStore (ReturnDesc2, Operand[1], WalkState); |
| 464 | AcpiUtRemoveReference (ReturnDesc2); |
| 465 | |
| 466 | /* The object exists in the namespace, return TRUE */ |
| 467 | |
| 468 | ReturnDesc->Integer.Value = ACPI_UINT64_MAX; |
| 469 | goto Cleanup; |
| 470 | |
| 471 | |
| 472 | default: |
| 473 | |
| 474 | /* No other opcodes get here */ |
| 475 | |
| 476 | break; |
| 477 | } |
| 478 | break; |
| 479 | |
| 480 | case AML_STORE_OP: /* Store (Source, Target) */ |
| 481 | /* |
| 482 | * A store operand is typically a number, string, buffer or lvalue |
| 483 | * Be careful about deleting the source object, |
| 484 | * since the object itself may have been stored. |
| 485 | */ |
| 486 | Status = AcpiExStore (Operand[0], Operand[1], WalkState); |
| 487 | if (ACPI_FAILURE (Status)) |
| 488 | { |
| 489 | return_ACPI_STATUS (Status); |
| 490 | } |
| 491 | |
| 492 | /* It is possible that the Store already produced a return object */ |
| 493 | |
| 494 | if (!WalkState->ResultObj) |
| 495 | { |
| 496 | /* |
| 497 | * Normally, we would remove a reference on the Operand[0] |
| 498 | * parameter; But since it is being used as the internal return |
| 499 | * object (meaning we would normally increment it), the two |
| 500 | * cancel out, and we simply don't do anything. |
| 501 | */ |
| 502 | WalkState->ResultObj = Operand[0]; |
| 503 | WalkState->Operands[0] = NULL; /* Prevent deletion */ |
| 504 | } |
| 505 | return_ACPI_STATUS (Status); |
| 506 | |
| 507 | /* |
| 508 | * ACPI 2.0 Opcodes |
| 509 | */ |
| 510 | case AML_COPY_OP: /* Copy (Source, Target) */ |
| 511 | |
| 512 | Status = AcpiUtCopyIobjectToIobject ( |
| 513 | Operand[0], &ReturnDesc, WalkState); |
| 514 | break; |
| 515 | |
| 516 | case AML_TO_DECSTRING_OP: /* ToDecimalString (Data, Result) */ |
| 517 | |
| 518 | Status = AcpiExConvertToString ( |
| 519 | Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_DECIMAL); |
| 520 | if (ReturnDesc == Operand[0]) |
| 521 | { |
| 522 | /* No conversion performed, add ref to handle return value */ |
| 523 | |
| 524 | AcpiUtAddReference (ReturnDesc); |
| 525 | } |
| 526 | break; |
| 527 | |
| 528 | case AML_TO_HEXSTRING_OP: /* ToHexString (Data, Result) */ |
| 529 | |
| 530 | Status = AcpiExConvertToString ( |
| 531 | Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_HEX); |
| 532 | if (ReturnDesc == Operand[0]) |
| 533 | { |
| 534 | /* No conversion performed, add ref to handle return value */ |
| 535 | |
| 536 | AcpiUtAddReference (ReturnDesc); |
| 537 | } |
| 538 | break; |
| 539 | |
| 540 | case AML_TO_BUFFER_OP: /* ToBuffer (Data, Result) */ |
| 541 | |
| 542 | Status = AcpiExConvertToBuffer (Operand[0], &ReturnDesc); |
| 543 | if (ReturnDesc == Operand[0]) |
| 544 | { |
| 545 | /* No conversion performed, add ref to handle return value */ |
| 546 | |
| 547 | AcpiUtAddReference (ReturnDesc); |
| 548 | } |
| 549 | break; |
| 550 | |
| 551 | case AML_TO_INTEGER_OP: /* ToInteger (Data, Result) */ |
| 552 | |
| 553 | /* Perform "explicit" conversion */ |
| 554 | |
| 555 | Status = AcpiExConvertToInteger (Operand[0], &ReturnDesc, 0); |
| 556 | if (ReturnDesc == Operand[0]) |
| 557 | { |
| 558 | /* No conversion performed, add ref to handle return value */ |
| 559 | |
| 560 | AcpiUtAddReference (ReturnDesc); |
| 561 | } |
| 562 | break; |
| 563 | |
| 564 | case AML_SHIFT_LEFT_BIT_OP: /* ShiftLeftBit (Source, BitNum) */ |
| 565 | case AML_SHIFT_RIGHT_BIT_OP: /* ShiftRightBit (Source, BitNum) */ |
| 566 | |
| 567 | /* These are two obsolete opcodes */ |
| 568 | |
| 569 | ACPI_ERROR ((AE_INFO, |
| 570 | "%s is obsolete and not implemented" , |
| 571 | AcpiPsGetOpcodeName (WalkState->Opcode))); |
| 572 | Status = AE_SUPPORT; |
| 573 | goto Cleanup; |
| 574 | |
| 575 | default: /* Unknown opcode */ |
| 576 | |
| 577 | ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X" , |
| 578 | WalkState->Opcode)); |
| 579 | Status = AE_AML_BAD_OPCODE; |
| 580 | goto Cleanup; |
| 581 | } |
| 582 | |
| 583 | if (ACPI_SUCCESS (Status)) |
| 584 | { |
| 585 | /* Store the return value computed above into the target object */ |
| 586 | |
| 587 | Status = AcpiExStore (ReturnDesc, Operand[1], WalkState); |
| 588 | } |
| 589 | |
| 590 | |
| 591 | Cleanup: |
| 592 | |
| 593 | /* Delete return object on error */ |
| 594 | |
| 595 | if (ACPI_FAILURE (Status)) |
| 596 | { |
| 597 | AcpiUtRemoveReference (ReturnDesc); |
| 598 | } |
| 599 | |
| 600 | /* Save return object on success */ |
| 601 | |
| 602 | else if (!WalkState->ResultObj) |
| 603 | { |
| 604 | WalkState->ResultObj = ReturnDesc; |
| 605 | } |
| 606 | |
| 607 | return_ACPI_STATUS (Status); |
| 608 | } |
| 609 | |
| 610 | |
| 611 | /******************************************************************************* |
| 612 | * |
| 613 | * FUNCTION: AcpiExOpcode_1A_0T_1R |
| 614 | * |
| 615 | * PARAMETERS: WalkState - Current state (contains AML opcode) |
| 616 | * |
| 617 | * RETURN: Status |
| 618 | * |
| 619 | * DESCRIPTION: Execute opcode with one argument, no target, and a return value |
| 620 | * |
| 621 | ******************************************************************************/ |
| 622 | |
| 623 | ACPI_STATUS |
| 624 | AcpiExOpcode_1A_0T_1R ( |
| 625 | ACPI_WALK_STATE *WalkState) |
| 626 | { |
| 627 | ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; |
| 628 | ACPI_OPERAND_OBJECT *TempDesc; |
| 629 | ACPI_OPERAND_OBJECT *ReturnDesc = NULL; |
| 630 | ACPI_STATUS Status = AE_OK; |
| 631 | UINT32 Type; |
| 632 | UINT64 Value; |
| 633 | |
| 634 | |
| 635 | ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_1R, |
| 636 | AcpiPsGetOpcodeName (WalkState->Opcode)); |
| 637 | |
| 638 | |
| 639 | /* Examine the AML opcode */ |
| 640 | |
| 641 | switch (WalkState->Opcode) |
| 642 | { |
| 643 | case AML_LNOT_OP: /* LNot (Operand) */ |
| 644 | |
| 645 | ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) 0); |
| 646 | if (!ReturnDesc) |
| 647 | { |
| 648 | Status = AE_NO_MEMORY; |
| 649 | goto Cleanup; |
| 650 | } |
| 651 | |
| 652 | /* |
| 653 | * Set result to ONES (TRUE) if Value == 0. Note: |
| 654 | * ReturnDesc->Integer.Value is initially == 0 (FALSE) from above. |
| 655 | */ |
| 656 | if (!Operand[0]->Integer.Value) |
| 657 | { |
| 658 | ReturnDesc->Integer.Value = ACPI_UINT64_MAX; |
| 659 | } |
| 660 | break; |
| 661 | |
| 662 | case AML_DECREMENT_OP: /* Decrement (Operand) */ |
| 663 | case AML_INCREMENT_OP: /* Increment (Operand) */ |
| 664 | /* |
| 665 | * Create a new integer. Can't just get the base integer and |
| 666 | * increment it because it may be an Arg or Field. |
| 667 | */ |
| 668 | ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); |
| 669 | if (!ReturnDesc) |
| 670 | { |
| 671 | Status = AE_NO_MEMORY; |
| 672 | goto Cleanup; |
| 673 | } |
| 674 | |
| 675 | /* |
| 676 | * Since we are expecting a Reference operand, it can be either a |
| 677 | * NS Node or an internal object. |
| 678 | */ |
| 679 | TempDesc = Operand[0]; |
| 680 | if (ACPI_GET_DESCRIPTOR_TYPE (TempDesc) == ACPI_DESC_TYPE_OPERAND) |
| 681 | { |
| 682 | /* Internal reference object - prevent deletion */ |
| 683 | |
| 684 | AcpiUtAddReference (TempDesc); |
| 685 | } |
| 686 | |
| 687 | /* |
| 688 | * Convert the Reference operand to an Integer (This removes a |
| 689 | * reference on the Operand[0] object) |
| 690 | * |
| 691 | * NOTE: We use LNOT_OP here in order to force resolution of the |
| 692 | * reference operand to an actual integer. |
| 693 | */ |
| 694 | Status = AcpiExResolveOperands (AML_LNOT_OP, &TempDesc, WalkState); |
| 695 | if (ACPI_FAILURE (Status)) |
| 696 | { |
| 697 | ACPI_EXCEPTION ((AE_INFO, Status, |
| 698 | "While resolving operands for [%s]" , |
| 699 | AcpiPsGetOpcodeName (WalkState->Opcode))); |
| 700 | |
| 701 | goto Cleanup; |
| 702 | } |
| 703 | |
| 704 | /* |
| 705 | * TempDesc is now guaranteed to be an Integer object -- |
| 706 | * Perform the actual increment or decrement |
| 707 | */ |
| 708 | if (WalkState->Opcode == AML_INCREMENT_OP) |
| 709 | { |
| 710 | ReturnDesc->Integer.Value = TempDesc->Integer.Value + 1; |
| 711 | } |
| 712 | else |
| 713 | { |
| 714 | ReturnDesc->Integer.Value = TempDesc->Integer.Value - 1; |
| 715 | } |
| 716 | |
| 717 | /* Finished with this Integer object */ |
| 718 | |
| 719 | AcpiUtRemoveReference (TempDesc); |
| 720 | |
| 721 | /* |
| 722 | * Store the result back (indirectly) through the original |
| 723 | * Reference object |
| 724 | */ |
| 725 | Status = AcpiExStore (ReturnDesc, Operand[0], WalkState); |
| 726 | break; |
| 727 | |
| 728 | case AML_OBJECT_TYPE_OP: /* ObjectType (SourceObject) */ |
| 729 | /* |
| 730 | * Note: The operand is not resolved at this point because we want to |
| 731 | * get the associated object, not its value. For example, we don't |
| 732 | * want to resolve a FieldUnit to its value, we want the actual |
| 733 | * FieldUnit object. |
| 734 | */ |
| 735 | |
| 736 | /* Get the type of the base object */ |
| 737 | |
| 738 | Status = AcpiExResolveMultiple (WalkState, Operand[0], &Type, NULL); |
| 739 | if (ACPI_FAILURE (Status)) |
| 740 | { |
| 741 | goto Cleanup; |
| 742 | } |
| 743 | |
| 744 | /* Allocate a descriptor to hold the type. */ |
| 745 | |
| 746 | ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) Type); |
| 747 | if (!ReturnDesc) |
| 748 | { |
| 749 | Status = AE_NO_MEMORY; |
| 750 | goto Cleanup; |
| 751 | } |
| 752 | break; |
| 753 | |
| 754 | case AML_SIZE_OF_OP: /* SizeOf (SourceObject) */ |
| 755 | /* |
| 756 | * Note: The operand is not resolved at this point because we want to |
| 757 | * get the associated object, not its value. |
| 758 | */ |
| 759 | |
| 760 | /* Get the base object */ |
| 761 | |
| 762 | Status = AcpiExResolveMultiple ( |
| 763 | WalkState, Operand[0], &Type, &TempDesc); |
| 764 | if (ACPI_FAILURE (Status)) |
| 765 | { |
| 766 | goto Cleanup; |
| 767 | } |
| 768 | |
| 769 | /* |
| 770 | * The type of the base object must be integer, buffer, string, or |
| 771 | * package. All others are not supported. |
| 772 | * |
| 773 | * NOTE: Integer is not specifically supported by the ACPI spec, |
| 774 | * but is supported implicitly via implicit operand conversion. |
| 775 | * rather than bother with conversion, we just use the byte width |
| 776 | * global (4 or 8 bytes). |
| 777 | */ |
| 778 | switch (Type) |
| 779 | { |
| 780 | case ACPI_TYPE_INTEGER: |
| 781 | |
| 782 | Value = AcpiGbl_IntegerByteWidth; |
| 783 | break; |
| 784 | |
| 785 | case ACPI_TYPE_STRING: |
| 786 | |
| 787 | Value = TempDesc->String.Length; |
| 788 | break; |
| 789 | |
| 790 | case ACPI_TYPE_BUFFER: |
| 791 | |
| 792 | /* Buffer arguments may not be evaluated at this point */ |
| 793 | |
| 794 | Status = AcpiDsGetBufferArguments (TempDesc); |
| 795 | Value = TempDesc->Buffer.Length; |
| 796 | break; |
| 797 | |
| 798 | case ACPI_TYPE_PACKAGE: |
| 799 | |
| 800 | /* Package arguments may not be evaluated at this point */ |
| 801 | |
| 802 | Status = AcpiDsGetPackageArguments (TempDesc); |
| 803 | Value = TempDesc->Package.Count; |
| 804 | break; |
| 805 | |
| 806 | default: |
| 807 | |
| 808 | ACPI_ERROR ((AE_INFO, |
| 809 | "Operand must be Buffer/Integer/String/Package" |
| 810 | " - found type %s" , |
| 811 | AcpiUtGetTypeName (Type))); |
| 812 | |
| 813 | Status = AE_AML_OPERAND_TYPE; |
| 814 | goto Cleanup; |
| 815 | } |
| 816 | |
| 817 | if (ACPI_FAILURE (Status)) |
| 818 | { |
| 819 | goto Cleanup; |
| 820 | } |
| 821 | |
| 822 | /* |
| 823 | * Now that we have the size of the object, create a result |
| 824 | * object to hold the value |
| 825 | */ |
| 826 | ReturnDesc = AcpiUtCreateIntegerObject (Value); |
| 827 | if (!ReturnDesc) |
| 828 | { |
| 829 | Status = AE_NO_MEMORY; |
| 830 | goto Cleanup; |
| 831 | } |
| 832 | break; |
| 833 | |
| 834 | |
| 835 | case AML_REF_OF_OP: /* RefOf (SourceObject) */ |
| 836 | |
| 837 | Status = AcpiExGetObjectReference ( |
| 838 | Operand[0], &ReturnDesc, WalkState); |
| 839 | if (ACPI_FAILURE (Status)) |
| 840 | { |
| 841 | goto Cleanup; |
| 842 | } |
| 843 | break; |
| 844 | |
| 845 | |
| 846 | case AML_DEREF_OF_OP: /* DerefOf (ObjReference | String) */ |
| 847 | |
| 848 | /* Check for a method local or argument, or standalone String */ |
| 849 | |
| 850 | if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED) |
| 851 | { |
| 852 | TempDesc = AcpiNsGetAttachedObject ( |
| 853 | (ACPI_NAMESPACE_NODE *) Operand[0]); |
| 854 | if (TempDesc && |
| 855 | ((TempDesc->Common.Type == ACPI_TYPE_STRING) || |
| 856 | (TempDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE))) |
| 857 | { |
| 858 | Operand[0] = TempDesc; |
| 859 | AcpiUtAddReference (TempDesc); |
| 860 | } |
| 861 | else |
| 862 | { |
| 863 | Status = AE_AML_OPERAND_TYPE; |
| 864 | goto Cleanup; |
| 865 | } |
| 866 | } |
| 867 | else |
| 868 | { |
| 869 | switch ((Operand[0])->Common.Type) |
| 870 | { |
| 871 | case ACPI_TYPE_LOCAL_REFERENCE: |
| 872 | /* |
| 873 | * This is a DerefOf (LocalX | ArgX) |
| 874 | * |
| 875 | * Must resolve/dereference the local/arg reference first |
| 876 | */ |
| 877 | switch (Operand[0]->Reference.Class) |
| 878 | { |
| 879 | case ACPI_REFCLASS_LOCAL: |
| 880 | case ACPI_REFCLASS_ARG: |
| 881 | |
| 882 | /* Set Operand[0] to the value of the local/arg */ |
| 883 | |
| 884 | Status = AcpiDsMethodDataGetValue ( |
| 885 | Operand[0]->Reference.Class, |
| 886 | Operand[0]->Reference.Value, |
| 887 | WalkState, &TempDesc); |
| 888 | if (ACPI_FAILURE (Status)) |
| 889 | { |
| 890 | goto Cleanup; |
| 891 | } |
| 892 | |
| 893 | /* |
| 894 | * Delete our reference to the input object and |
| 895 | * point to the object just retrieved |
| 896 | */ |
| 897 | AcpiUtRemoveReference (Operand[0]); |
| 898 | Operand[0] = TempDesc; |
| 899 | break; |
| 900 | |
| 901 | case ACPI_REFCLASS_REFOF: |
| 902 | |
| 903 | /* Get the object to which the reference refers */ |
| 904 | |
| 905 | TempDesc = Operand[0]->Reference.Object; |
| 906 | AcpiUtRemoveReference (Operand[0]); |
| 907 | Operand[0] = TempDesc; |
| 908 | break; |
| 909 | |
| 910 | default: |
| 911 | |
| 912 | /* Must be an Index op - handled below */ |
| 913 | break; |
| 914 | } |
| 915 | break; |
| 916 | |
| 917 | case ACPI_TYPE_STRING: |
| 918 | |
| 919 | break; |
| 920 | |
| 921 | default: |
| 922 | |
| 923 | Status = AE_AML_OPERAND_TYPE; |
| 924 | goto Cleanup; |
| 925 | } |
| 926 | } |
| 927 | |
| 928 | if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) != ACPI_DESC_TYPE_NAMED) |
| 929 | { |
| 930 | if ((Operand[0])->Common.Type == ACPI_TYPE_STRING) |
| 931 | { |
| 932 | /* |
| 933 | * This is a DerefOf (String). The string is a reference |
| 934 | * to a named ACPI object. |
| 935 | * |
| 936 | * 1) Find the owning Node |
| 937 | * 2) Dereference the node to an actual object. Could be a |
| 938 | * Field, so we need to resolve the node to a value. |
| 939 | */ |
| 940 | Status = AcpiNsGetNodeUnlocked (WalkState->ScopeInfo->Scope.Node, |
| 941 | Operand[0]->String.Pointer, |
| 942 | ACPI_NS_SEARCH_PARENT, |
| 943 | ACPI_CAST_INDIRECT_PTR ( |
| 944 | ACPI_NAMESPACE_NODE, &ReturnDesc)); |
| 945 | if (ACPI_FAILURE (Status)) |
| 946 | { |
| 947 | goto Cleanup; |
| 948 | } |
| 949 | |
| 950 | Status = AcpiExResolveNodeToValue ( |
| 951 | ACPI_CAST_INDIRECT_PTR ( |
| 952 | ACPI_NAMESPACE_NODE, &ReturnDesc), |
| 953 | WalkState); |
| 954 | goto Cleanup; |
| 955 | } |
| 956 | } |
| 957 | |
| 958 | /* Operand[0] may have changed from the code above */ |
| 959 | |
| 960 | if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED) |
| 961 | { |
| 962 | /* |
| 963 | * This is a DerefOf (ObjectReference) |
| 964 | * Get the actual object from the Node (This is the dereference). |
| 965 | * This case may only happen when a LocalX or ArgX is |
| 966 | * dereferenced above. |
| 967 | */ |
| 968 | ReturnDesc = AcpiNsGetAttachedObject ( |
| 969 | (ACPI_NAMESPACE_NODE *) Operand[0]); |
| 970 | AcpiUtAddReference (ReturnDesc); |
| 971 | } |
| 972 | else |
| 973 | { |
| 974 | /* |
| 975 | * This must be a reference object produced by either the |
| 976 | * Index() or RefOf() operator |
| 977 | */ |
| 978 | switch (Operand[0]->Reference.Class) |
| 979 | { |
| 980 | case ACPI_REFCLASS_INDEX: |
| 981 | /* |
| 982 | * The target type for the Index operator must be |
| 983 | * either a Buffer or a Package |
| 984 | */ |
| 985 | switch (Operand[0]->Reference.TargetType) |
| 986 | { |
| 987 | case ACPI_TYPE_BUFFER_FIELD: |
| 988 | |
| 989 | TempDesc = Operand[0]->Reference.Object; |
| 990 | |
| 991 | /* |
| 992 | * Create a new object that contains one element of the |
| 993 | * buffer -- the element pointed to by the index. |
| 994 | * |
| 995 | * NOTE: index into a buffer is NOT a pointer to a |
| 996 | * sub-buffer of the main buffer, it is only a pointer to a |
| 997 | * single element (byte) of the buffer! |
| 998 | * |
| 999 | * Since we are returning the value of the buffer at the |
| 1000 | * indexed location, we don't need to add an additional |
| 1001 | * reference to the buffer itself. |
| 1002 | */ |
| 1003 | ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) |
| 1004 | TempDesc->Buffer.Pointer[Operand[0]->Reference.Value]); |
| 1005 | if (!ReturnDesc) |
| 1006 | { |
| 1007 | Status = AE_NO_MEMORY; |
| 1008 | goto Cleanup; |
| 1009 | } |
| 1010 | break; |
| 1011 | |
| 1012 | case ACPI_TYPE_PACKAGE: |
| 1013 | /* |
| 1014 | * Return the referenced element of the package. We must |
| 1015 | * add another reference to the referenced object, however. |
| 1016 | */ |
| 1017 | ReturnDesc = *(Operand[0]->Reference.Where); |
| 1018 | if (!ReturnDesc) |
| 1019 | { |
| 1020 | /* |
| 1021 | * Element is NULL, do not allow the dereference. |
| 1022 | * This provides compatibility with other ACPI |
| 1023 | * implementations. |
| 1024 | */ |
| 1025 | return_ACPI_STATUS (AE_AML_UNINITIALIZED_ELEMENT); |
| 1026 | } |
| 1027 | |
| 1028 | AcpiUtAddReference (ReturnDesc); |
| 1029 | break; |
| 1030 | |
| 1031 | default: |
| 1032 | |
| 1033 | ACPI_ERROR ((AE_INFO, |
| 1034 | "Unknown Index TargetType 0x%X in reference object %p" , |
| 1035 | Operand[0]->Reference.TargetType, Operand[0])); |
| 1036 | |
| 1037 | Status = AE_AML_OPERAND_TYPE; |
| 1038 | goto Cleanup; |
| 1039 | } |
| 1040 | break; |
| 1041 | |
| 1042 | case ACPI_REFCLASS_REFOF: |
| 1043 | |
| 1044 | ReturnDesc = Operand[0]->Reference.Object; |
| 1045 | |
| 1046 | if (ACPI_GET_DESCRIPTOR_TYPE (ReturnDesc) == |
| 1047 | ACPI_DESC_TYPE_NAMED) |
| 1048 | { |
| 1049 | ReturnDesc = AcpiNsGetAttachedObject ( |
| 1050 | (ACPI_NAMESPACE_NODE *) ReturnDesc); |
| 1051 | if (!ReturnDesc) |
| 1052 | { |
| 1053 | break; |
| 1054 | } |
| 1055 | |
| 1056 | /* |
| 1057 | * June 2013: |
| 1058 | * BufferFields/FieldUnits require additional resolution |
| 1059 | */ |
| 1060 | switch (ReturnDesc->Common.Type) |
| 1061 | { |
| 1062 | case ACPI_TYPE_BUFFER_FIELD: |
| 1063 | case ACPI_TYPE_LOCAL_REGION_FIELD: |
| 1064 | case ACPI_TYPE_LOCAL_BANK_FIELD: |
| 1065 | case ACPI_TYPE_LOCAL_INDEX_FIELD: |
| 1066 | |
| 1067 | Status = AcpiExReadDataFromField ( |
| 1068 | WalkState, ReturnDesc, &TempDesc); |
| 1069 | if (ACPI_FAILURE (Status)) |
| 1070 | { |
| 1071 | goto Cleanup; |
| 1072 | } |
| 1073 | |
| 1074 | ReturnDesc = TempDesc; |
| 1075 | break; |
| 1076 | |
| 1077 | default: |
| 1078 | |
| 1079 | /* Add another reference to the object */ |
| 1080 | |
| 1081 | AcpiUtAddReference (ReturnDesc); |
| 1082 | break; |
| 1083 | } |
| 1084 | } |
| 1085 | break; |
| 1086 | |
| 1087 | default: |
| 1088 | |
| 1089 | ACPI_ERROR ((AE_INFO, |
| 1090 | "Unknown class in reference(%p) - 0x%2.2X" , |
| 1091 | Operand[0], Operand[0]->Reference.Class)); |
| 1092 | |
| 1093 | Status = AE_TYPE; |
| 1094 | goto Cleanup; |
| 1095 | } |
| 1096 | } |
| 1097 | break; |
| 1098 | |
| 1099 | default: |
| 1100 | |
| 1101 | ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X" , |
| 1102 | WalkState->Opcode)); |
| 1103 | |
| 1104 | Status = AE_AML_BAD_OPCODE; |
| 1105 | goto Cleanup; |
| 1106 | } |
| 1107 | |
| 1108 | |
| 1109 | Cleanup: |
| 1110 | |
| 1111 | /* Delete return object on error */ |
| 1112 | |
| 1113 | if (ACPI_FAILURE (Status)) |
| 1114 | { |
| 1115 | AcpiUtRemoveReference (ReturnDesc); |
| 1116 | } |
| 1117 | |
| 1118 | /* Save return object on success */ |
| 1119 | |
| 1120 | else |
| 1121 | { |
| 1122 | WalkState->ResultObj = ReturnDesc; |
| 1123 | } |
| 1124 | |
| 1125 | return_ACPI_STATUS (Status); |
| 1126 | } |
| 1127 | |