1 /****************************************************************************** 2 * 3 * Module Name: exoparg1 - AML execution - opcodes with 1 argument 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 ***************************************************************************** 115 * 116 * Alternatively, you may choose to be licensed under the terms of the 117 * following license: 118 * 119 * Redistribution and use in source and binary forms, with or without 120 * modification, are permitted provided that the following conditions 121 * are met: 122 * 1. Redistributions of source code must retain the above copyright 123 * notice, this list of conditions, and the following disclaimer, 124 * without modification. 125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 126 * substantially similar to the "NO WARRANTY" disclaimer below 127 * ("Disclaimer") and any redistribution must be conditioned upon 128 * including a substantially similar Disclaimer requirement for further 129 * binary redistribution. 130 * 3. Neither the names of the above-listed copyright holders nor the names 131 * of any contributors may be used to endorse or promote products derived 132 * from this software without specific prior written permission. 133 * 134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 145 * 146 * Alternatively, you may choose to be licensed under the terms of the 147 * GNU General Public License ("GPL") version 2 as published by the Free 148 * Software Foundation. 149 * 150 *****************************************************************************/ 151 152 #include "acpi.h" 153 #include "accommon.h" 154 #include "acparser.h" 155 #include "acdispat.h" 156 #include "acinterp.h" 157 #include "amlcode.h" 158 #include "acnamesp.h" 159 160 161 #define _COMPONENT ACPI_EXECUTER 162 ACPI_MODULE_NAME ("exoparg1") 163 164 165 /*! 166 * Naming convention for AML interpreter execution routines. 167 * 168 * The routines that begin execution of AML opcodes are named with a common 169 * convention based upon the number of arguments, the number of target operands, 170 * and whether or not a value is returned: 171 * 172 * AcpiExOpcode_xA_yT_zR 173 * 174 * Where: 175 * 176 * xA - ARGUMENTS: The number of arguments (input operands) that are 177 * required for this opcode type (0 through 6 args). 178 * yT - TARGETS: The number of targets (output operands) that are required 179 * for this opcode type (0, 1, or 2 targets). 180 * zR - RETURN VALUE: Indicates whether this opcode type returns a value 181 * as the function return (0 or 1). 182 * 183 * The AcpiExOpcode* functions are called via the Dispatcher component with 184 * fully resolved operands. 185 !*/ 186 187 /******************************************************************************* 188 * 189 * FUNCTION: AcpiExOpcode_0A_0T_1R 190 * 191 * PARAMETERS: WalkState - Current state (contains AML opcode) 192 * 193 * RETURN: Status 194 * 195 * DESCRIPTION: Execute operator with no operands, one return value 196 * 197 ******************************************************************************/ 198 199 ACPI_STATUS 200 AcpiExOpcode_0A_0T_1R ( 201 ACPI_WALK_STATE *WalkState) 202 { 203 ACPI_STATUS Status = AE_OK; 204 ACPI_OPERAND_OBJECT *ReturnDesc = NULL; 205 206 207 ACPI_FUNCTION_TRACE_STR (ExOpcode_0A_0T_1R, 208 AcpiPsGetOpcodeName (WalkState->Opcode)); 209 210 211 /* Examine the AML opcode */ 212 213 switch (WalkState->Opcode) 214 { 215 case AML_TIMER_OP: /* Timer () */ 216 217 /* Create a return object of type Integer */ 218 219 ReturnDesc = AcpiUtCreateIntegerObject (AcpiOsGetTimer ()); 220 if (!ReturnDesc) 221 { 222 Status = AE_NO_MEMORY; 223 goto Cleanup; 224 } 225 break; 226 227 default: /* Unknown opcode */ 228 229 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", 230 WalkState->Opcode)); 231 Status = AE_AML_BAD_OPCODE; 232 break; 233 } 234 235 Cleanup: 236 237 /* Delete return object on error */ 238 239 if ((ACPI_FAILURE (Status)) || WalkState->ResultObj) 240 { 241 AcpiUtRemoveReference (ReturnDesc); 242 WalkState->ResultObj = NULL; 243 } 244 else 245 { 246 /* Save the return value */ 247 248 WalkState->ResultObj = ReturnDesc; 249 } 250 251 return_ACPI_STATUS (Status); 252 } 253 254 255 /******************************************************************************* 256 * 257 * FUNCTION: AcpiExOpcode_1A_0T_0R 258 * 259 * PARAMETERS: WalkState - Current state (contains AML opcode) 260 * 261 * RETURN: Status 262 * 263 * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on 264 * object stack 265 * 266 ******************************************************************************/ 267 268 ACPI_STATUS 269 AcpiExOpcode_1A_0T_0R ( 270 ACPI_WALK_STATE *WalkState) 271 { 272 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 273 ACPI_STATUS Status = AE_OK; 274 275 276 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_0R, 277 AcpiPsGetOpcodeName (WalkState->Opcode)); 278 279 280 /* Examine the AML opcode */ 281 282 switch (WalkState->Opcode) 283 { 284 case AML_RELEASE_OP: /* Release (MutexObject) */ 285 286 Status = AcpiExReleaseMutex (Operand[0], WalkState); 287 break; 288 289 case AML_RESET_OP: /* Reset (EventObject) */ 290 291 Status = AcpiExSystemResetEvent (Operand[0]); 292 break; 293 294 case AML_SIGNAL_OP: /* Signal (EventObject) */ 295 296 Status = AcpiExSystemSignalEvent (Operand[0]); 297 break; 298 299 case AML_SLEEP_OP: /* Sleep (MsecTime) */ 300 301 Status = AcpiExSystemDoSleep (Operand[0]->Integer.Value); 302 break; 303 304 case AML_STALL_OP: /* Stall (UsecTime) */ 305 306 Status = AcpiExSystemDoStall ((UINT32) Operand[0]->Integer.Value); 307 break; 308 309 case AML_UNLOAD_OP: /* Unload (Handle) */ 310 311 Status = AcpiExUnloadTable (Operand[0]); 312 break; 313 314 default: /* Unknown opcode */ 315 316 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", 317 WalkState->Opcode)); 318 Status = AE_AML_BAD_OPCODE; 319 break; 320 } 321 322 return_ACPI_STATUS (Status); 323 } 324 325 326 /******************************************************************************* 327 * 328 * FUNCTION: AcpiExOpcode_1A_1T_0R 329 * 330 * PARAMETERS: WalkState - Current state (contains AML opcode) 331 * 332 * RETURN: Status 333 * 334 * DESCRIPTION: Execute opcode with one argument, one target, and no 335 * return value. 336 * 337 ******************************************************************************/ 338 339 ACPI_STATUS 340 AcpiExOpcode_1A_1T_0R ( 341 ACPI_WALK_STATE *WalkState) 342 { 343 ACPI_STATUS Status = AE_OK; 344 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 345 346 347 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_0R, 348 AcpiPsGetOpcodeName (WalkState->Opcode)); 349 350 351 /* Examine the AML opcode */ 352 353 switch (WalkState->Opcode) 354 { 355 case AML_LOAD_OP: 356 357 Status = AcpiExLoadOp (Operand[0], Operand[1], WalkState); 358 break; 359 360 default: /* Unknown opcode */ 361 362 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", 363 WalkState->Opcode)); 364 Status = AE_AML_BAD_OPCODE; 365 goto Cleanup; 366 } 367 368 369 Cleanup: 370 371 return_ACPI_STATUS (Status); 372 } 373 374 375 /******************************************************************************* 376 * 377 * FUNCTION: AcpiExOpcode_1A_1T_1R 378 * 379 * PARAMETERS: WalkState - Current state (contains AML opcode) 380 * 381 * RETURN: Status 382 * 383 * DESCRIPTION: Execute opcode with one argument, one target, and a 384 * return value. 385 * 386 ******************************************************************************/ 387 388 ACPI_STATUS 389 AcpiExOpcode_1A_1T_1R ( 390 ACPI_WALK_STATE *WalkState) 391 { 392 ACPI_STATUS Status = AE_OK; 393 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 394 ACPI_OPERAND_OBJECT *ReturnDesc = NULL; 395 ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL; 396 UINT32 Temp32; 397 UINT32 i; 398 UINT64 PowerOfTen; 399 UINT64 Digit; 400 401 402 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_1R, 403 AcpiPsGetOpcodeName (WalkState->Opcode)); 404 405 406 /* Examine the AML opcode */ 407 408 switch (WalkState->Opcode) 409 { 410 case AML_BIT_NOT_OP: 411 case AML_FIND_SET_LEFT_BIT_OP: 412 case AML_FIND_SET_RIGHT_BIT_OP: 413 case AML_FROM_BCD_OP: 414 case AML_TO_BCD_OP: 415 case AML_CONDITIONAL_REF_OF_OP: 416 417 /* Create a return object of type Integer for these opcodes */ 418 419 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); 420 if (!ReturnDesc) 421 { 422 Status = AE_NO_MEMORY; 423 goto Cleanup; 424 } 425 426 switch (WalkState->Opcode) 427 { 428 case AML_BIT_NOT_OP: /* Not (Operand, Result) */ 429 430 ReturnDesc->Integer.Value = ~Operand[0]->Integer.Value; 431 break; 432 433 case AML_FIND_SET_LEFT_BIT_OP: /* FindSetLeftBit (Operand, Result) */ 434 435 ReturnDesc->Integer.Value = Operand[0]->Integer.Value; 436 437 /* 438 * Acpi specification describes Integer type as a little 439 * endian unsigned value, so this boundary condition is valid. 440 */ 441 for (Temp32 = 0; ReturnDesc->Integer.Value && 442 Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32) 443 { 444 ReturnDesc->Integer.Value >>= 1; 445 } 446 447 ReturnDesc->Integer.Value = Temp32; 448 break; 449 450 case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */ 451 452 ReturnDesc->Integer.Value = Operand[0]->Integer.Value; 453 454 /* 455 * The Acpi specification describes Integer type as a little 456 * endian unsigned value, so this boundary condition is valid. 457 */ 458 for (Temp32 = 0; ReturnDesc->Integer.Value && 459 Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32) 460 { 461 ReturnDesc->Integer.Value <<= 1; 462 } 463 464 /* Since the bit position is one-based, subtract from 33 (65) */ 465 466 ReturnDesc->Integer.Value = 467 Temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - Temp32; 468 break; 469 470 case AML_FROM_BCD_OP: /* FromBcd (BCDValue, Result) */ 471 /* 472 * The 64-bit ACPI integer can hold 16 4-bit BCD characters 473 * (if table is 32-bit, integer can hold 8 BCD characters) 474 * Convert each 4-bit BCD value 475 */ 476 PowerOfTen = 1; 477 ReturnDesc->Integer.Value = 0; 478 Digit = Operand[0]->Integer.Value; 479 480 /* Convert each BCD digit (each is one nybble wide) */ 481 482 for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++) 483 { 484 /* Get the least significant 4-bit BCD digit */ 485 486 Temp32 = ((UINT32) Digit) & 0xF; 487 488 /* Check the range of the digit */ 489 490 if (Temp32 > 9) 491 { 492 ACPI_ERROR ((AE_INFO, 493 "BCD digit too large (not decimal): 0x%X", 494 Temp32)); 495 496 Status = AE_AML_NUMERIC_OVERFLOW; 497 goto Cleanup; 498 } 499 500 /* Sum the digit into the result with the current power of 10 */ 501 502 ReturnDesc->Integer.Value += 503 (((UINT64) Temp32) * PowerOfTen); 504 505 /* Shift to next BCD digit */ 506 507 Digit >>= 4; 508 509 /* Next power of 10 */ 510 511 PowerOfTen *= 10; 512 } 513 break; 514 515 case AML_TO_BCD_OP: /* ToBcd (Operand, Result) */ 516 517 ReturnDesc->Integer.Value = 0; 518 Digit = Operand[0]->Integer.Value; 519 520 /* Each BCD digit is one nybble wide */ 521 522 for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++) 523 { 524 (void) AcpiUtShortDivide (Digit, 10, &Digit, &Temp32); 525 526 /* 527 * Insert the BCD digit that resides in the 528 * remainder from above 529 */ 530 ReturnDesc->Integer.Value |= 531 (((UINT64) Temp32) << ACPI_MUL_4 (i)); 532 } 533 534 /* Overflow if there is any data left in Digit */ 535 536 if (Digit > 0) 537 { 538 ACPI_ERROR ((AE_INFO, 539 "Integer too large to convert to BCD: 0x%8.8X%8.8X", 540 ACPI_FORMAT_UINT64 (Operand[0]->Integer.Value))); 541 Status = AE_AML_NUMERIC_OVERFLOW; 542 goto Cleanup; 543 } 544 break; 545 546 case AML_CONDITIONAL_REF_OF_OP: /* CondRefOf (SourceObject, Result) */ 547 /* 548 * This op is a little strange because the internal return value is 549 * different than the return value stored in the result descriptor 550 * (There are really two return values) 551 */ 552 if ((ACPI_NAMESPACE_NODE *) Operand[0] == AcpiGbl_RootNode) 553 { 554 /* 555 * This means that the object does not exist in the namespace, 556 * return FALSE 557 */ 558 ReturnDesc->Integer.Value = 0; 559 goto Cleanup; 560 } 561 562 /* Get the object reference, store it, and remove our reference */ 563 564 Status = AcpiExGetObjectReference (Operand[0], 565 &ReturnDesc2, WalkState); 566 if (ACPI_FAILURE (Status)) 567 { 568 goto Cleanup; 569 } 570 571 Status = AcpiExStore (ReturnDesc2, Operand[1], WalkState); 572 AcpiUtRemoveReference (ReturnDesc2); 573 574 /* The object exists in the namespace, return TRUE */ 575 576 ReturnDesc->Integer.Value = ACPI_UINT64_MAX; 577 goto Cleanup; 578 579 580 default: 581 582 /* No other opcodes get here */ 583 584 break; 585 } 586 break; 587 588 case AML_STORE_OP: /* Store (Source, Target) */ 589 /* 590 * A store operand is typically a number, string, buffer or lvalue 591 * Be careful about deleting the source object, 592 * since the object itself may have been stored. 593 */ 594 Status = AcpiExStore (Operand[0], Operand[1], WalkState); 595 if (ACPI_FAILURE (Status)) 596 { 597 return_ACPI_STATUS (Status); 598 } 599 600 /* It is possible that the Store already produced a return object */ 601 602 if (!WalkState->ResultObj) 603 { 604 /* 605 * Normally, we would remove a reference on the Operand[0] 606 * parameter; But since it is being used as the internal return 607 * object (meaning we would normally increment it), the two 608 * cancel out, and we simply don't do anything. 609 */ 610 WalkState->ResultObj = Operand[0]; 611 WalkState->Operands[0] = NULL; /* Prevent deletion */ 612 } 613 return_ACPI_STATUS (Status); 614 615 /* 616 * ACPI 2.0 Opcodes 617 */ 618 case AML_COPY_OBJECT_OP: /* CopyObject (Source, Target) */ 619 620 Status = AcpiUtCopyIobjectToIobject ( 621 Operand[0], &ReturnDesc, WalkState); 622 break; 623 624 case AML_TO_DECIMAL_STRING_OP: /* ToDecimalString (Data, Result) */ 625 626 Status = AcpiExConvertToString ( 627 Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_DECIMAL); 628 if (ReturnDesc == Operand[0]) 629 { 630 /* No conversion performed, add ref to handle return value */ 631 632 AcpiUtAddReference (ReturnDesc); 633 } 634 break; 635 636 case AML_TO_HEX_STRING_OP: /* ToHexString (Data, Result) */ 637 638 Status = AcpiExConvertToString ( 639 Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_HEX); 640 if (ReturnDesc == Operand[0]) 641 { 642 /* No conversion performed, add ref to handle return value */ 643 644 AcpiUtAddReference (ReturnDesc); 645 } 646 break; 647 648 case AML_TO_BUFFER_OP: /* ToBuffer (Data, Result) */ 649 650 Status = AcpiExConvertToBuffer (Operand[0], &ReturnDesc); 651 if (ReturnDesc == Operand[0]) 652 { 653 /* No conversion performed, add ref to handle return value */ 654 655 AcpiUtAddReference (ReturnDesc); 656 } 657 break; 658 659 case AML_TO_INTEGER_OP: /* ToInteger (Data, Result) */ 660 661 /* Perform "explicit" conversion */ 662 663 Status = AcpiExConvertToInteger (Operand[0], &ReturnDesc, 0); 664 if (ReturnDesc == Operand[0]) 665 { 666 /* No conversion performed, add ref to handle return value */ 667 668 AcpiUtAddReference (ReturnDesc); 669 } 670 break; 671 672 case AML_SHIFT_LEFT_BIT_OP: /* ShiftLeftBit (Source, BitNum) */ 673 case AML_SHIFT_RIGHT_BIT_OP: /* ShiftRightBit (Source, BitNum) */ 674 675 /* These are two obsolete opcodes */ 676 677 ACPI_ERROR ((AE_INFO, 678 "%s is obsolete and not implemented", 679 AcpiPsGetOpcodeName (WalkState->Opcode))); 680 Status = AE_SUPPORT; 681 goto Cleanup; 682 683 default: /* Unknown opcode */ 684 685 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", 686 WalkState->Opcode)); 687 Status = AE_AML_BAD_OPCODE; 688 goto Cleanup; 689 } 690 691 if (ACPI_SUCCESS (Status)) 692 { 693 /* Store the return value computed above into the target object */ 694 695 Status = AcpiExStore (ReturnDesc, Operand[1], WalkState); 696 } 697 698 699 Cleanup: 700 701 /* Delete return object on error */ 702 703 if (ACPI_FAILURE (Status)) 704 { 705 AcpiUtRemoveReference (ReturnDesc); 706 } 707 708 /* Save return object on success */ 709 710 else if (!WalkState->ResultObj) 711 { 712 WalkState->ResultObj = ReturnDesc; 713 } 714 715 return_ACPI_STATUS (Status); 716 } 717 718 719 /******************************************************************************* 720 * 721 * FUNCTION: AcpiExOpcode_1A_0T_1R 722 * 723 * PARAMETERS: WalkState - Current state (contains AML opcode) 724 * 725 * RETURN: Status 726 * 727 * DESCRIPTION: Execute opcode with one argument, no target, and a return value 728 * 729 ******************************************************************************/ 730 731 ACPI_STATUS 732 AcpiExOpcode_1A_0T_1R ( 733 ACPI_WALK_STATE *WalkState) 734 { 735 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 736 ACPI_OPERAND_OBJECT *TempDesc; 737 ACPI_OPERAND_OBJECT *ReturnDesc = NULL; 738 ACPI_STATUS Status = AE_OK; 739 UINT32 Type; 740 UINT64 Value; 741 742 743 ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_0T_1R, 744 AcpiPsGetOpcodeName (WalkState->Opcode)); 745 746 747 /* Examine the AML opcode */ 748 749 switch (WalkState->Opcode) 750 { 751 case AML_LOGICAL_NOT_OP: /* LNot (Operand) */ 752 753 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) 0); 754 if (!ReturnDesc) 755 { 756 Status = AE_NO_MEMORY; 757 goto Cleanup; 758 } 759 760 /* 761 * Set result to ONES (TRUE) if Value == 0. Note: 762 * ReturnDesc->Integer.Value is initially == 0 (FALSE) from above. 763 */ 764 if (!Operand[0]->Integer.Value) 765 { 766 ReturnDesc->Integer.Value = ACPI_UINT64_MAX; 767 } 768 break; 769 770 case AML_DECREMENT_OP: /* Decrement (Operand) */ 771 case AML_INCREMENT_OP: /* Increment (Operand) */ 772 /* 773 * Create a new integer. Can't just get the base integer and 774 * increment it because it may be an Arg or Field. 775 */ 776 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER); 777 if (!ReturnDesc) 778 { 779 Status = AE_NO_MEMORY; 780 goto Cleanup; 781 } 782 783 /* 784 * Since we are expecting a Reference operand, it can be either a 785 * NS Node or an internal object. 786 */ 787 TempDesc = Operand[0]; 788 if (ACPI_GET_DESCRIPTOR_TYPE (TempDesc) == ACPI_DESC_TYPE_OPERAND) 789 { 790 /* Internal reference object - prevent deletion */ 791 792 AcpiUtAddReference (TempDesc); 793 } 794 795 /* 796 * Convert the Reference operand to an Integer (This removes a 797 * reference on the Operand[0] object) 798 * 799 * NOTE: We use LNOT_OP here in order to force resolution of the 800 * reference operand to an actual integer. 801 */ 802 Status = AcpiExResolveOperands (AML_LOGICAL_NOT_OP, 803 &TempDesc, WalkState); 804 if (ACPI_FAILURE (Status)) 805 { 806 ACPI_EXCEPTION ((AE_INFO, Status, 807 "While resolving operands for [%s]", 808 AcpiPsGetOpcodeName (WalkState->Opcode))); 809 810 goto Cleanup; 811 } 812 813 /* 814 * TempDesc is now guaranteed to be an Integer object -- 815 * Perform the actual increment or decrement 816 */ 817 if (WalkState->Opcode == AML_INCREMENT_OP) 818 { 819 ReturnDesc->Integer.Value = TempDesc->Integer.Value + 1; 820 } 821 else 822 { 823 ReturnDesc->Integer.Value = TempDesc->Integer.Value - 1; 824 } 825 826 /* Finished with this Integer object */ 827 828 AcpiUtRemoveReference (TempDesc); 829 830 /* 831 * Store the result back (indirectly) through the original 832 * Reference object 833 */ 834 Status = AcpiExStore (ReturnDesc, Operand[0], WalkState); 835 break; 836 837 case AML_OBJECT_TYPE_OP: /* ObjectType (SourceObject) */ 838 /* 839 * Note: The operand is not resolved at this point because we want to 840 * get the associated object, not its value. For example, we don't 841 * want to resolve a FieldUnit to its value, we want the actual 842 * FieldUnit object. 843 */ 844 845 /* Get the type of the base object */ 846 847 Status = AcpiExResolveMultiple (WalkState, Operand[0], &Type, NULL); 848 if (ACPI_FAILURE (Status)) 849 { 850 goto Cleanup; 851 } 852 853 /* Allocate a descriptor to hold the type. */ 854 855 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) Type); 856 if (!ReturnDesc) 857 { 858 Status = AE_NO_MEMORY; 859 goto Cleanup; 860 } 861 break; 862 863 case AML_SIZE_OF_OP: /* SizeOf (SourceObject) */ 864 /* 865 * Note: The operand is not resolved at this point because we want to 866 * get the associated object, not its value. 867 */ 868 869 /* Get the base object */ 870 871 Status = AcpiExResolveMultiple ( 872 WalkState, Operand[0], &Type, &TempDesc); 873 if (ACPI_FAILURE (Status)) 874 { 875 goto Cleanup; 876 } 877 878 /* 879 * The type of the base object must be integer, buffer, string, or 880 * package. All others are not supported. 881 * 882 * NOTE: Integer is not specifically supported by the ACPI spec, 883 * but is supported implicitly via implicit operand conversion. 884 * rather than bother with conversion, we just use the byte width 885 * global (4 or 8 bytes). 886 */ 887 switch (Type) 888 { 889 case ACPI_TYPE_INTEGER: 890 891 Value = AcpiGbl_IntegerByteWidth; 892 break; 893 894 case ACPI_TYPE_STRING: 895 896 Value = TempDesc->String.Length; 897 break; 898 899 case ACPI_TYPE_BUFFER: 900 901 /* Buffer arguments may not be evaluated at this point */ 902 903 Status = AcpiDsGetBufferArguments (TempDesc); 904 Value = TempDesc->Buffer.Length; 905 break; 906 907 case ACPI_TYPE_PACKAGE: 908 909 /* Package arguments may not be evaluated at this point */ 910 911 Status = AcpiDsGetPackageArguments (TempDesc); 912 Value = TempDesc->Package.Count; 913 break; 914 915 default: 916 917 ACPI_ERROR ((AE_INFO, 918 "Operand must be Buffer/Integer/String/Package" 919 " - found type %s", 920 AcpiUtGetTypeName (Type))); 921 922 Status = AE_AML_OPERAND_TYPE; 923 goto Cleanup; 924 } 925 926 if (ACPI_FAILURE (Status)) 927 { 928 goto Cleanup; 929 } 930 931 /* 932 * Now that we have the size of the object, create a result 933 * object to hold the value 934 */ 935 ReturnDesc = AcpiUtCreateIntegerObject (Value); 936 if (!ReturnDesc) 937 { 938 Status = AE_NO_MEMORY; 939 goto Cleanup; 940 } 941 break; 942 943 944 case AML_REF_OF_OP: /* RefOf (SourceObject) */ 945 946 Status = AcpiExGetObjectReference ( 947 Operand[0], &ReturnDesc, WalkState); 948 if (ACPI_FAILURE (Status)) 949 { 950 goto Cleanup; 951 } 952 break; 953 954 955 case AML_DEREF_OF_OP: /* DerefOf (ObjReference | String) */ 956 957 /* Check for a method local or argument, or standalone String */ 958 959 if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED) 960 { 961 TempDesc = AcpiNsGetAttachedObject ( 962 (ACPI_NAMESPACE_NODE *) Operand[0]); 963 if (TempDesc && 964 ((TempDesc->Common.Type == ACPI_TYPE_STRING) || 965 (TempDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE))) 966 { 967 Operand[0] = TempDesc; 968 AcpiUtAddReference (TempDesc); 969 } 970 else 971 { 972 Status = AE_AML_OPERAND_TYPE; 973 goto Cleanup; 974 } 975 } 976 else 977 { 978 switch ((Operand[0])->Common.Type) 979 { 980 case ACPI_TYPE_LOCAL_REFERENCE: 981 /* 982 * This is a DerefOf (LocalX | ArgX) 983 * 984 * Must resolve/dereference the local/arg reference first 985 */ 986 switch (Operand[0]->Reference.Class) 987 { 988 case ACPI_REFCLASS_LOCAL: 989 case ACPI_REFCLASS_ARG: 990 991 /* Set Operand[0] to the value of the local/arg */ 992 993 Status = AcpiDsMethodDataGetValue ( 994 Operand[0]->Reference.Class, 995 Operand[0]->Reference.Value, 996 WalkState, &TempDesc); 997 if (ACPI_FAILURE (Status)) 998 { 999 goto Cleanup; 1000 } 1001 1002 /* 1003 * Delete our reference to the input object and 1004 * point to the object just retrieved 1005 */ 1006 AcpiUtRemoveReference (Operand[0]); 1007 Operand[0] = TempDesc; 1008 break; 1009 1010 case ACPI_REFCLASS_REFOF: 1011 1012 /* Get the object to which the reference refers */ 1013 1014 TempDesc = Operand[0]->Reference.Object; 1015 AcpiUtRemoveReference (Operand[0]); 1016 Operand[0] = TempDesc; 1017 break; 1018 1019 default: 1020 1021 /* Must be an Index op - handled below */ 1022 break; 1023 } 1024 break; 1025 1026 case ACPI_TYPE_STRING: 1027 1028 break; 1029 1030 default: 1031 1032 Status = AE_AML_OPERAND_TYPE; 1033 goto Cleanup; 1034 } 1035 } 1036 1037 if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) != ACPI_DESC_TYPE_NAMED) 1038 { 1039 if ((Operand[0])->Common.Type == ACPI_TYPE_STRING) 1040 { 1041 /* 1042 * This is a DerefOf (String). The string is a reference 1043 * to a named ACPI object. 1044 * 1045 * 1) Find the owning Node 1046 * 2) Dereference the node to an actual object. Could be a 1047 * Field, so we need to resolve the node to a value. 1048 */ 1049 Status = AcpiNsGetNodeUnlocked (WalkState->ScopeInfo->Scope.Node, 1050 Operand[0]->String.Pointer, 1051 ACPI_NS_SEARCH_PARENT, 1052 ACPI_CAST_INDIRECT_PTR ( 1053 ACPI_NAMESPACE_NODE, &ReturnDesc)); 1054 if (ACPI_FAILURE (Status)) 1055 { 1056 goto Cleanup; 1057 } 1058 1059 Status = AcpiExResolveNodeToValue ( 1060 ACPI_CAST_INDIRECT_PTR ( 1061 ACPI_NAMESPACE_NODE, &ReturnDesc), 1062 WalkState); 1063 goto Cleanup; 1064 } 1065 } 1066 1067 /* Operand[0] may have changed from the code above */ 1068 1069 if (ACPI_GET_DESCRIPTOR_TYPE (Operand[0]) == ACPI_DESC_TYPE_NAMED) 1070 { 1071 /* 1072 * This is a DerefOf (ObjectReference) 1073 * Get the actual object from the Node (This is the dereference). 1074 * This case may only happen when a LocalX or ArgX is 1075 * dereferenced above, or for references to device and 1076 * thermal objects. 1077 */ 1078 switch (((ACPI_NAMESPACE_NODE *) Operand[0])->Type) 1079 { 1080 case ACPI_TYPE_DEVICE: 1081 case ACPI_TYPE_THERMAL: 1082 1083 /* These types have no node subobject, return the NS node */ 1084 1085 ReturnDesc = Operand[0]; 1086 break; 1087 1088 default: 1089 /* For most types, get the object attached to the node */ 1090 1091 ReturnDesc = AcpiNsGetAttachedObject ( 1092 (ACPI_NAMESPACE_NODE *) Operand[0]); 1093 AcpiUtAddReference (ReturnDesc); 1094 break; 1095 } 1096 } 1097 else 1098 { 1099 /* 1100 * This must be a reference object produced by either the 1101 * Index() or RefOf() operator 1102 */ 1103 switch (Operand[0]->Reference.Class) 1104 { 1105 case ACPI_REFCLASS_INDEX: 1106 /* 1107 * The target type for the Index operator must be 1108 * either a Buffer or a Package 1109 */ 1110 switch (Operand[0]->Reference.TargetType) 1111 { 1112 case ACPI_TYPE_BUFFER_FIELD: 1113 1114 TempDesc = Operand[0]->Reference.Object; 1115 1116 /* 1117 * Create a new object that contains one element of the 1118 * buffer -- the element pointed to by the index. 1119 * 1120 * NOTE: index into a buffer is NOT a pointer to a 1121 * sub-buffer of the main buffer, it is only a pointer to a 1122 * single element (byte) of the buffer! 1123 * 1124 * Since we are returning the value of the buffer at the 1125 * indexed location, we don't need to add an additional 1126 * reference to the buffer itself. 1127 */ 1128 ReturnDesc = AcpiUtCreateIntegerObject ((UINT64) 1129 TempDesc->Buffer.Pointer[Operand[0]->Reference.Value]); 1130 if (!ReturnDesc) 1131 { 1132 Status = AE_NO_MEMORY; 1133 goto Cleanup; 1134 } 1135 break; 1136 1137 case ACPI_TYPE_PACKAGE: 1138 /* 1139 * Return the referenced element of the package. We must 1140 * add another reference to the referenced object, however. 1141 */ 1142 ReturnDesc = *(Operand[0]->Reference.Where); 1143 if (!ReturnDesc) 1144 { 1145 /* 1146 * Element is NULL, do not allow the dereference. 1147 * This provides compatibility with other ACPI 1148 * implementations. 1149 */ 1150 return_ACPI_STATUS (AE_AML_UNINITIALIZED_ELEMENT); 1151 } 1152 1153 AcpiUtAddReference (ReturnDesc); 1154 break; 1155 1156 default: 1157 1158 ACPI_ERROR ((AE_INFO, 1159 "Unknown Index TargetType 0x%X in reference object %p", 1160 Operand[0]->Reference.TargetType, Operand[0])); 1161 1162 Status = AE_AML_OPERAND_TYPE; 1163 goto Cleanup; 1164 } 1165 break; 1166 1167 case ACPI_REFCLASS_REFOF: 1168 1169 ReturnDesc = Operand[0]->Reference.Object; 1170 1171 if (ACPI_GET_DESCRIPTOR_TYPE (ReturnDesc) == 1172 ACPI_DESC_TYPE_NAMED) 1173 { 1174 ReturnDesc = AcpiNsGetAttachedObject ( 1175 (ACPI_NAMESPACE_NODE *) ReturnDesc); 1176 if (!ReturnDesc) 1177 { 1178 break; 1179 } 1180 1181 /* 1182 * June 2013: 1183 * BufferFields/FieldUnits require additional resolution 1184 */ 1185 switch (ReturnDesc->Common.Type) 1186 { 1187 case ACPI_TYPE_BUFFER_FIELD: 1188 case ACPI_TYPE_LOCAL_REGION_FIELD: 1189 case ACPI_TYPE_LOCAL_BANK_FIELD: 1190 case ACPI_TYPE_LOCAL_INDEX_FIELD: 1191 1192 Status = AcpiExReadDataFromField ( 1193 WalkState, ReturnDesc, &TempDesc); 1194 if (ACPI_FAILURE (Status)) 1195 { 1196 goto Cleanup; 1197 } 1198 1199 ReturnDesc = TempDesc; 1200 break; 1201 1202 default: 1203 1204 /* Add another reference to the object */ 1205 1206 AcpiUtAddReference (ReturnDesc); 1207 break; 1208 } 1209 } 1210 break; 1211 1212 default: 1213 1214 ACPI_ERROR ((AE_INFO, 1215 "Unknown class in reference(%p) - 0x%2.2X", 1216 Operand[0], Operand[0]->Reference.Class)); 1217 1218 Status = AE_TYPE; 1219 goto Cleanup; 1220 } 1221 } 1222 break; 1223 1224 default: 1225 1226 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", 1227 WalkState->Opcode)); 1228 1229 Status = AE_AML_BAD_OPCODE; 1230 goto Cleanup; 1231 } 1232 1233 1234 Cleanup: 1235 1236 /* Delete return object on error */ 1237 1238 if (ACPI_FAILURE (Status)) 1239 { 1240 AcpiUtRemoveReference (ReturnDesc); 1241 } 1242 1243 /* Save return object on success */ 1244 1245 else 1246 { 1247 WalkState->ResultObj = ReturnDesc; 1248 } 1249 1250 return_ACPI_STATUS (Status); 1251 } 1252