1 /****************************************************************************** 2 * 3 * Module Name: dswexec - Dispatcher method execution callbacks; 4 * dispatch to interpreter. 5 * 6 *****************************************************************************/ 7 8 /****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 ***************************************************************************** 116 * 117 * Alternatively, you may choose to be licensed under the terms of the 118 * following license: 119 * 120 * Redistribution and use in source and binary forms, with or without 121 * modification, are permitted provided that the following conditions 122 * are met: 123 * 1. Redistributions of source code must retain the above copyright 124 * notice, this list of conditions, and the following disclaimer, 125 * without modification. 126 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 127 * substantially similar to the "NO WARRANTY" disclaimer below 128 * ("Disclaimer") and any redistribution must be conditioned upon 129 * including a substantially similar Disclaimer requirement for further 130 * binary redistribution. 131 * 3. Neither the names of the above-listed copyright holders nor the names 132 * of any contributors may be used to endorse or promote products derived 133 * from this software without specific prior written permission. 134 * 135 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 136 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 137 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 138 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 139 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 140 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 141 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 142 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 143 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 144 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 145 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 146 * 147 * Alternatively, you may choose to be licensed under the terms of the 148 * GNU General Public License ("GPL") version 2 as published by the Free 149 * Software Foundation. 150 * 151 *****************************************************************************/ 152 153 #include "acpi.h" 154 #include "accommon.h" 155 #include "acparser.h" 156 #include "amlcode.h" 157 #include "acdispat.h" 158 #include "acinterp.h" 159 #include "acnamesp.h" 160 #include "acdebug.h" 161 162 163 #define _COMPONENT ACPI_DISPATCHER 164 ACPI_MODULE_NAME ("dswexec") 165 166 /* 167 * Dispatch table for opcode classes 168 */ 169 static ACPI_EXECUTE_OP AcpiGbl_OpTypeDispatch [] = 170 { 171 AcpiExOpcode_0A_0T_1R, 172 AcpiExOpcode_1A_0T_0R, 173 AcpiExOpcode_1A_0T_1R, 174 AcpiExOpcode_1A_1T_0R, 175 AcpiExOpcode_1A_1T_1R, 176 AcpiExOpcode_2A_0T_0R, 177 AcpiExOpcode_2A_0T_1R, 178 AcpiExOpcode_2A_1T_1R, 179 AcpiExOpcode_2A_2T_1R, 180 AcpiExOpcode_3A_0T_0R, 181 AcpiExOpcode_3A_1T_1R, 182 AcpiExOpcode_6A_0T_1R 183 }; 184 185 186 /***************************************************************************** 187 * 188 * FUNCTION: AcpiDsGetPredicateValue 189 * 190 * PARAMETERS: WalkState - Current state of the parse tree walk 191 * ResultObj - if non-zero, pop result from result stack 192 * 193 * RETURN: Status 194 * 195 * DESCRIPTION: Get the result of a predicate evaluation 196 * 197 ****************************************************************************/ 198 199 ACPI_STATUS 200 AcpiDsGetPredicateValue ( 201 ACPI_WALK_STATE *WalkState, 202 ACPI_OPERAND_OBJECT *ResultObj) 203 { 204 ACPI_STATUS Status = AE_OK; 205 ACPI_OPERAND_OBJECT *ObjDesc; 206 ACPI_OPERAND_OBJECT *LocalObjDesc = NULL; 207 208 209 ACPI_FUNCTION_TRACE_PTR (DsGetPredicateValue, WalkState); 210 211 212 WalkState->ControlState->Common.State = 0; 213 214 if (ResultObj) 215 { 216 Status = AcpiDsResultPop (&ObjDesc, WalkState); 217 if (ACPI_FAILURE (Status)) 218 { 219 ACPI_EXCEPTION ((AE_INFO, Status, 220 "Could not get result from predicate evaluation")); 221 222 return_ACPI_STATUS (Status); 223 } 224 } 225 else 226 { 227 Status = AcpiDsCreateOperand (WalkState, WalkState->Op, 0); 228 if (ACPI_FAILURE (Status)) 229 { 230 return_ACPI_STATUS (Status); 231 } 232 233 Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState); 234 if (ACPI_FAILURE (Status)) 235 { 236 return_ACPI_STATUS (Status); 237 } 238 239 ObjDesc = WalkState->Operands [0]; 240 } 241 242 if (!ObjDesc) 243 { 244 ACPI_ERROR ((AE_INFO, 245 "No predicate ObjDesc=%p State=%p", 246 ObjDesc, WalkState)); 247 248 return_ACPI_STATUS (AE_AML_NO_OPERAND); 249 } 250 251 /* 252 * Result of predicate evaluation must be an Integer 253 * object. Implicitly convert the argument if necessary. 254 */ 255 Status = AcpiExConvertToInteger (ObjDesc, &LocalObjDesc, 256 ACPI_IMPLICIT_CONVERSION); 257 if (ACPI_FAILURE (Status)) 258 { 259 goto Cleanup; 260 } 261 262 if (LocalObjDesc->Common.Type != ACPI_TYPE_INTEGER) 263 { 264 ACPI_ERROR ((AE_INFO, 265 "Bad predicate (not an integer) ObjDesc=%p State=%p Type=0x%X", 266 ObjDesc, WalkState, ObjDesc->Common.Type)); 267 268 Status = AE_AML_OPERAND_TYPE; 269 goto Cleanup; 270 } 271 272 /* Truncate the predicate to 32-bits if necessary */ 273 274 (void) AcpiExTruncateFor32bitTable (LocalObjDesc); 275 276 /* 277 * Save the result of the predicate evaluation on 278 * the control stack 279 */ 280 if (LocalObjDesc->Integer.Value) 281 { 282 WalkState->ControlState->Common.Value = TRUE; 283 } 284 else 285 { 286 /* 287 * Predicate is FALSE, we will just toss the 288 * rest of the package 289 */ 290 WalkState->ControlState->Common.Value = FALSE; 291 Status = AE_CTRL_FALSE; 292 } 293 294 /* Predicate can be used for an implicit return value */ 295 296 (void) AcpiDsDoImplicitReturn (LocalObjDesc, WalkState, TRUE); 297 298 299 Cleanup: 300 301 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 302 "Completed a predicate eval=%X Op=%p\n", 303 WalkState->ControlState->Common.Value, WalkState->Op)); 304 305 #ifdef ACPI_DEBUGGER 306 /* Break to debugger to display result */ 307 308 AcpiDbDisplayResultObject (LocalObjDesc, WalkState); 309 #endif 310 311 /* 312 * Delete the predicate result object (we know that 313 * we don't need it anymore) 314 */ 315 if (LocalObjDesc != ObjDesc) 316 { 317 AcpiUtRemoveReference (LocalObjDesc); 318 } 319 AcpiUtRemoveReference (ObjDesc); 320 321 WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL; 322 return_ACPI_STATUS (Status); 323 } 324 325 326 /***************************************************************************** 327 * 328 * FUNCTION: AcpiDsExecBeginOp 329 * 330 * PARAMETERS: WalkState - Current state of the parse tree walk 331 * OutOp - Where to return op if a new one is created 332 * 333 * RETURN: Status 334 * 335 * DESCRIPTION: Descending callback used during the execution of control 336 * methods. This is where most operators and operands are 337 * dispatched to the interpreter. 338 * 339 ****************************************************************************/ 340 341 ACPI_STATUS 342 AcpiDsExecBeginOp ( 343 ACPI_WALK_STATE *WalkState, 344 ACPI_PARSE_OBJECT **OutOp) 345 { 346 ACPI_PARSE_OBJECT *Op; 347 ACPI_STATUS Status = AE_OK; 348 UINT32 OpcodeClass; 349 350 351 ACPI_FUNCTION_TRACE_PTR (DsExecBeginOp, WalkState); 352 353 354 Op = WalkState->Op; 355 if (!Op) 356 { 357 Status = AcpiDsLoad2BeginOp (WalkState, OutOp); 358 if (ACPI_FAILURE (Status)) 359 { 360 goto ErrorExit; 361 } 362 363 Op = *OutOp; 364 WalkState->Op = Op; 365 WalkState->Opcode = Op->Common.AmlOpcode; 366 WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 367 368 if (AcpiNsOpensScope (WalkState->OpInfo->ObjectType)) 369 { 370 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 371 "(%s) Popping scope for Op %p\n", 372 AcpiUtGetTypeName (WalkState->OpInfo->ObjectType), Op)); 373 374 Status = AcpiDsScopeStackPop (WalkState); 375 if (ACPI_FAILURE (Status)) 376 { 377 goto ErrorExit; 378 } 379 } 380 } 381 382 if (Op == WalkState->Origin) 383 { 384 if (OutOp) 385 { 386 *OutOp = Op; 387 } 388 389 return_ACPI_STATUS (AE_OK); 390 } 391 392 /* 393 * If the previous opcode was a conditional, this opcode 394 * must be the beginning of the associated predicate. 395 * Save this knowledge in the current scope descriptor 396 */ 397 if ((WalkState->ControlState) && 398 (WalkState->ControlState->Common.State == 399 ACPI_CONTROL_CONDITIONAL_EXECUTING)) 400 { 401 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 402 "Exec predicate Op=%p State=%p\n", 403 Op, WalkState)); 404 405 WalkState->ControlState->Common.State = 406 ACPI_CONTROL_PREDICATE_EXECUTING; 407 408 /* Save start of predicate */ 409 410 WalkState->ControlState->Control.PredicateOp = Op; 411 } 412 413 414 OpcodeClass = WalkState->OpInfo->Class; 415 416 /* We want to send namepaths to the load code */ 417 418 if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP) 419 { 420 OpcodeClass = AML_CLASS_NAMED_OBJECT; 421 } 422 423 /* 424 * Handle the opcode based upon the opcode type 425 */ 426 switch (OpcodeClass) 427 { 428 case AML_CLASS_CONTROL: 429 430 Status = AcpiDsExecBeginControlOp (WalkState, Op); 431 break; 432 433 case AML_CLASS_NAMED_OBJECT: 434 435 if (WalkState->WalkType & ACPI_WALK_METHOD) 436 { 437 /* 438 * Found a named object declaration during method execution; 439 * we must enter this object into the namespace. The created 440 * object is temporary and will be deleted upon completion of 441 * the execution of this method. 442 * 443 * Note 10/2010: Except for the Scope() op. This opcode does 444 * not actually create a new object, it refers to an existing 445 * object. However, for Scope(), we want to indeed open a 446 * new scope. 447 */ 448 if (Op->Common.AmlOpcode != AML_SCOPE_OP) 449 { 450 Status = AcpiDsLoad2BeginOp (WalkState, NULL); 451 } 452 else 453 { 454 Status = AcpiDsScopeStackPush ( 455 Op->Named.Node, Op->Named.Node->Type, WalkState); 456 if (ACPI_FAILURE (Status)) 457 { 458 return_ACPI_STATUS (Status); 459 } 460 } 461 } 462 break; 463 464 case AML_CLASS_EXECUTE: 465 case AML_CLASS_CREATE: 466 467 break; 468 469 default: 470 471 break; 472 } 473 474 /* Nothing to do here during method execution */ 475 476 return_ACPI_STATUS (Status); 477 478 479 ErrorExit: 480 Status = AcpiDsMethodError (Status, WalkState); 481 return_ACPI_STATUS (Status); 482 } 483 484 485 /***************************************************************************** 486 * 487 * FUNCTION: AcpiDsExecEndOp 488 * 489 * PARAMETERS: WalkState - Current state of the parse tree walk 490 * 491 * RETURN: Status 492 * 493 * DESCRIPTION: Ascending callback used during the execution of control 494 * methods. The only thing we really need to do here is to 495 * notice the beginning of IF, ELSE, and WHILE blocks. 496 * 497 ****************************************************************************/ 498 499 ACPI_STATUS 500 AcpiDsExecEndOp ( 501 ACPI_WALK_STATE *WalkState) 502 { 503 ACPI_PARSE_OBJECT *Op; 504 ACPI_STATUS Status = AE_OK; 505 UINT32 OpType; 506 UINT32 OpClass; 507 ACPI_PARSE_OBJECT *NextOp; 508 ACPI_PARSE_OBJECT *FirstArg; 509 510 511 ACPI_FUNCTION_TRACE_PTR (DsExecEndOp, WalkState); 512 513 514 Op = WalkState->Op; 515 OpType = WalkState->OpInfo->Type; 516 OpClass = WalkState->OpInfo->Class; 517 518 if (OpClass == AML_CLASS_UNKNOWN) 519 { 520 ACPI_ERROR ((AE_INFO, "Unknown opcode 0x%X", Op->Common.AmlOpcode)); 521 return_ACPI_STATUS (AE_NOT_IMPLEMENTED); 522 } 523 524 FirstArg = Op->Common.Value.Arg; 525 526 /* Init the walk state */ 527 528 WalkState->NumOperands = 0; 529 WalkState->OperandIndex = 0; 530 WalkState->ReturnDesc = NULL; 531 WalkState->ResultObj = NULL; 532 533 #ifdef ACPI_DEBUGGER 534 /* Call debugger for single step support (DEBUG build only) */ 535 536 Status = AcpiDbSingleStep (WalkState, Op, OpClass); 537 if (ACPI_FAILURE (Status)) 538 { 539 return_ACPI_STATUS (Status); 540 } 541 #endif 542 543 /* Decode the Opcode Class */ 544 545 switch (OpClass) 546 { 547 case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */ 548 549 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 550 { 551 Status = AcpiDsEvaluateNamePath (WalkState); 552 if (ACPI_FAILURE (Status)) 553 { 554 goto Cleanup; 555 } 556 } 557 break; 558 559 case AML_CLASS_EXECUTE: /* Most operators with arguments */ 560 561 /* Build resolved operand stack */ 562 563 Status = AcpiDsCreateOperands (WalkState, FirstArg); 564 if (ACPI_FAILURE (Status)) 565 { 566 goto Cleanup; 567 } 568 569 /* 570 * All opcodes require operand resolution, with the only exceptions 571 * being the ObjectType and SizeOf operators. 572 */ 573 if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE)) 574 { 575 /* Resolve all operands */ 576 577 Status = AcpiExResolveOperands (WalkState->Opcode, 578 &(WalkState->Operands [WalkState->NumOperands -1]), 579 WalkState); 580 } 581 582 if (ACPI_SUCCESS (Status)) 583 { 584 /* 585 * Dispatch the request to the appropriate interpreter handler 586 * routine. There is one routine per opcode "type" based upon the 587 * number of opcode arguments and return type. 588 */ 589 Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState); 590 } 591 else 592 { 593 /* 594 * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the 595 * Local is uninitialized. 596 */ 597 if ((Status == AE_AML_UNINITIALIZED_LOCAL) && 598 (WalkState->Opcode == AML_STORE_OP) && 599 (WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) && 600 (WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) && 601 (WalkState->Operands[0]->Reference.Class == 602 WalkState->Operands[1]->Reference.Class) && 603 (WalkState->Operands[0]->Reference.Value == 604 WalkState->Operands[1]->Reference.Value)) 605 { 606 Status = AE_OK; 607 } 608 else 609 { 610 ACPI_EXCEPTION ((AE_INFO, Status, 611 "While resolving operands for [%s]", 612 AcpiPsGetOpcodeName (WalkState->Opcode))); 613 } 614 } 615 616 /* Always delete the argument objects and clear the operand stack */ 617 618 AcpiDsClearOperands (WalkState); 619 620 /* 621 * If a result object was returned from above, push it on the 622 * current result stack 623 */ 624 if (ACPI_SUCCESS (Status) && 625 WalkState->ResultObj) 626 { 627 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState); 628 } 629 break; 630 631 default: 632 633 switch (OpType) 634 { 635 case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ 636 637 /* 1 Operand, 0 ExternalResult, 0 InternalResult */ 638 639 Status = AcpiDsExecEndControlOp (WalkState, Op); 640 641 break; 642 643 case AML_TYPE_METHOD_CALL: 644 /* 645 * If the method is referenced from within a package 646 * declaration, it is not a invocation of the method, just 647 * a reference to it. 648 */ 649 if ((Op->Asl.Parent) && 650 ((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) || 651 (Op->Asl.Parent->Asl.AmlOpcode == AML_VARIABLE_PACKAGE_OP))) 652 { 653 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 654 "Method Reference in a Package, Op=%p\n", Op)); 655 656 Op->Common.Node = (ACPI_NAMESPACE_NODE *) 657 Op->Asl.Value.Arg->Asl.Node; 658 AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object); 659 return_ACPI_STATUS (AE_OK); 660 } 661 662 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 663 "Method invocation, Op=%p\n", Op)); 664 665 /* 666 * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains 667 * the method Node pointer 668 */ 669 /* NextOp points to the op that holds the method name */ 670 671 NextOp = FirstArg; 672 673 /* NextOp points to first argument op */ 674 675 NextOp = NextOp->Common.Next; 676 677 /* 678 * Get the method's arguments and put them on the operand stack 679 */ 680 Status = AcpiDsCreateOperands (WalkState, NextOp); 681 if (ACPI_FAILURE (Status)) 682 { 683 break; 684 } 685 686 /* 687 * Since the operands will be passed to another control method, 688 * we must resolve all local references here (Local variables, 689 * arguments to *this* method, etc.) 690 */ 691 Status = AcpiDsResolveOperands (WalkState); 692 if (ACPI_FAILURE (Status)) 693 { 694 /* On error, clear all resolved operands */ 695 696 AcpiDsClearOperands (WalkState); 697 break; 698 } 699 700 /* 701 * Tell the walk loop to preempt this running method and 702 * execute the new method 703 */ 704 Status = AE_CTRL_TRANSFER; 705 706 /* 707 * Return now; we don't want to disturb anything, 708 * especially the operand count! 709 */ 710 return_ACPI_STATUS (Status); 711 712 case AML_TYPE_CREATE_FIELD: 713 714 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 715 "Executing CreateField Buffer/Index Op=%p\n", Op)); 716 717 Status = AcpiDsLoad2EndOp (WalkState); 718 if (ACPI_FAILURE (Status)) 719 { 720 break; 721 } 722 723 Status = AcpiDsEvalBufferFieldOperands (WalkState, Op); 724 break; 725 726 727 case AML_TYPE_CREATE_OBJECT: 728 729 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 730 "Executing CreateObject (Buffer/Package) Op=%p Child=%p ParentOpcode=%4.4X\n", 731 Op, Op->Named.Value.Arg, Op->Common.Parent->Common.AmlOpcode)); 732 733 switch (Op->Common.Parent->Common.AmlOpcode) 734 { 735 case AML_NAME_OP: 736 /* 737 * Put the Node on the object stack (Contains the ACPI Name 738 * of this object) 739 */ 740 WalkState->Operands[0] = (void *) 741 Op->Common.Parent->Common.Node; 742 WalkState->NumOperands = 1; 743 744 Status = AcpiDsCreateNode (WalkState, 745 Op->Common.Parent->Common.Node, Op->Common.Parent); 746 if (ACPI_FAILURE (Status)) 747 { 748 break; 749 } 750 751 /* Fall through */ 752 /*lint -fallthrough */ 753 754 case AML_INT_EVAL_SUBTREE_OP: 755 756 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, 757 AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node)); 758 break; 759 760 default: 761 762 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL); 763 break; 764 } 765 766 /* 767 * If a result object was returned from above, push it on the 768 * current result stack 769 */ 770 if (WalkState->ResultObj) 771 { 772 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState); 773 } 774 break; 775 776 case AML_TYPE_NAMED_FIELD: 777 case AML_TYPE_NAMED_COMPLEX: 778 case AML_TYPE_NAMED_SIMPLE: 779 case AML_TYPE_NAMED_NO_OBJ: 780 781 Status = AcpiDsLoad2EndOp (WalkState); 782 if (ACPI_FAILURE (Status)) 783 { 784 break; 785 } 786 787 if (Op->Common.AmlOpcode == AML_REGION_OP) 788 { 789 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 790 "Executing OpRegion Address/Length Op=%p\n", Op)); 791 792 Status = AcpiDsEvalRegionOperands (WalkState, Op); 793 if (ACPI_FAILURE (Status)) 794 { 795 break; 796 } 797 } 798 else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP) 799 { 800 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 801 "Executing DataTableRegion Strings Op=%p\n", Op)); 802 803 Status = AcpiDsEvalTableRegionOperands (WalkState, Op); 804 if (ACPI_FAILURE (Status)) 805 { 806 break; 807 } 808 } 809 else if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP) 810 { 811 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 812 "Executing BankField Op=%p\n", Op)); 813 814 Status = AcpiDsEvalBankFieldOperands (WalkState, Op); 815 if (ACPI_FAILURE (Status)) 816 { 817 break; 818 } 819 } 820 break; 821 822 case AML_TYPE_UNDEFINED: 823 824 ACPI_ERROR ((AE_INFO, 825 "Undefined opcode type Op=%p", Op)); 826 return_ACPI_STATUS (AE_NOT_IMPLEMENTED); 827 828 case AML_TYPE_BOGUS: 829 830 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 831 "Internal opcode=%X type Op=%p\n", 832 WalkState->Opcode, Op)); 833 break; 834 835 default: 836 837 ACPI_ERROR ((AE_INFO, 838 "Unimplemented opcode, class=0x%X " 839 "type=0x%X Opcode=0x%X Op=%p", 840 OpClass, OpType, Op->Common.AmlOpcode, Op)); 841 842 Status = AE_NOT_IMPLEMENTED; 843 break; 844 } 845 } 846 847 /* 848 * ACPI 2.0 support for 64-bit integers: Truncate numeric 849 * result value if we are executing from a 32-bit ACPI table 850 */ 851 (void) AcpiExTruncateFor32bitTable (WalkState->ResultObj); 852 853 /* 854 * Check if we just completed the evaluation of a 855 * conditional predicate 856 */ 857 if ((ACPI_SUCCESS (Status)) && 858 (WalkState->ControlState) && 859 (WalkState->ControlState->Common.State == 860 ACPI_CONTROL_PREDICATE_EXECUTING) && 861 (WalkState->ControlState->Control.PredicateOp == Op)) 862 { 863 Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj); 864 WalkState->ResultObj = NULL; 865 } 866 867 868 Cleanup: 869 870 if (WalkState->ResultObj) 871 { 872 #ifdef ACPI_DEBUGGER 873 /* Break to debugger to display result */ 874 875 AcpiDbDisplayResultObject (WalkState->ResultObj,WalkState); 876 #endif 877 878 /* 879 * Delete the result op if and only if: 880 * Parent will not use the result -- such as any 881 * non-nested type2 op in a method (parent will be method) 882 */ 883 AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState); 884 } 885 886 #ifdef _UNDER_DEVELOPMENT 887 888 if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd) 889 { 890 AcpiDbMethodEnd (WalkState); 891 } 892 #endif 893 894 /* Invoke exception handler on error */ 895 896 if (ACPI_FAILURE (Status)) 897 { 898 Status = AcpiDsMethodError (Status, WalkState); 899 } 900 901 /* Always clear the object stack */ 902 903 WalkState->NumOperands = 0; 904 return_ACPI_STATUS (Status); 905 } 906