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 - 2017, 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 <contrib/dev/acpica/include/acpi.h> 154 #include <contrib/dev/acpica/include/accommon.h> 155 #include <contrib/dev/acpica/include/acparser.h> 156 #include <contrib/dev/acpica/include/amlcode.h> 157 #include <contrib/dev/acpica/include/acdispat.h> 158 #include <contrib/dev/acpica/include/acinterp.h> 159 #include <contrib/dev/acpica/include/acnamesp.h> 160 #include <contrib/dev/acpica/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 /* Break to debugger to display result */ 306 307 AcpiDbDisplayResultObject (LocalObjDesc, WalkState); 308 309 /* 310 * Delete the predicate result object (we know that 311 * we don't need it anymore) 312 */ 313 if (LocalObjDesc != ObjDesc) 314 { 315 AcpiUtRemoveReference (LocalObjDesc); 316 } 317 AcpiUtRemoveReference (ObjDesc); 318 319 WalkState->ControlState->Common.State = ACPI_CONTROL_NORMAL; 320 return_ACPI_STATUS (Status); 321 } 322 323 324 /***************************************************************************** 325 * 326 * FUNCTION: AcpiDsExecBeginOp 327 * 328 * PARAMETERS: WalkState - Current state of the parse tree walk 329 * OutOp - Where to return op if a new one is created 330 * 331 * RETURN: Status 332 * 333 * DESCRIPTION: Descending callback used during the execution of control 334 * methods. This is where most operators and operands are 335 * dispatched to the interpreter. 336 * 337 ****************************************************************************/ 338 339 ACPI_STATUS 340 AcpiDsExecBeginOp ( 341 ACPI_WALK_STATE *WalkState, 342 ACPI_PARSE_OBJECT **OutOp) 343 { 344 ACPI_PARSE_OBJECT *Op; 345 ACPI_STATUS Status = AE_OK; 346 UINT32 OpcodeClass; 347 348 349 ACPI_FUNCTION_TRACE_PTR (DsExecBeginOp, WalkState); 350 351 352 Op = WalkState->Op; 353 if (!Op) 354 { 355 Status = AcpiDsLoad2BeginOp (WalkState, OutOp); 356 if (ACPI_FAILURE (Status)) 357 { 358 goto ErrorExit; 359 } 360 361 Op = *OutOp; 362 WalkState->Op = Op; 363 WalkState->Opcode = Op->Common.AmlOpcode; 364 WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 365 366 if (AcpiNsOpensScope (WalkState->OpInfo->ObjectType)) 367 { 368 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 369 "(%s) Popping scope for Op %p\n", 370 AcpiUtGetTypeName (WalkState->OpInfo->ObjectType), Op)); 371 372 Status = AcpiDsScopeStackPop (WalkState); 373 if (ACPI_FAILURE (Status)) 374 { 375 goto ErrorExit; 376 } 377 } 378 } 379 380 if (Op == WalkState->Origin) 381 { 382 if (OutOp) 383 { 384 *OutOp = Op; 385 } 386 387 return_ACPI_STATUS (AE_OK); 388 } 389 390 /* 391 * If the previous opcode was a conditional, this opcode 392 * must be the beginning of the associated predicate. 393 * Save this knowledge in the current scope descriptor 394 */ 395 if ((WalkState->ControlState) && 396 (WalkState->ControlState->Common.State == 397 ACPI_CONTROL_CONDITIONAL_EXECUTING)) 398 { 399 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 400 "Exec predicate Op=%p State=%p\n", 401 Op, WalkState)); 402 403 WalkState->ControlState->Common.State = 404 ACPI_CONTROL_PREDICATE_EXECUTING; 405 406 /* Save start of predicate */ 407 408 WalkState->ControlState->Control.PredicateOp = Op; 409 } 410 411 412 OpcodeClass = WalkState->OpInfo->Class; 413 414 /* We want to send namepaths to the load code */ 415 416 if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP) 417 { 418 OpcodeClass = AML_CLASS_NAMED_OBJECT; 419 } 420 421 /* 422 * Handle the opcode based upon the opcode type 423 */ 424 switch (OpcodeClass) 425 { 426 case AML_CLASS_CONTROL: 427 428 Status = AcpiDsExecBeginControlOp (WalkState, Op); 429 break; 430 431 case AML_CLASS_NAMED_OBJECT: 432 433 if (WalkState->WalkType & ACPI_WALK_METHOD) 434 { 435 /* 436 * Found a named object declaration during method execution; 437 * we must enter this object into the namespace. The created 438 * object is temporary and will be deleted upon completion of 439 * the execution of this method. 440 * 441 * Note 10/2010: Except for the Scope() op. This opcode does 442 * not actually create a new object, it refers to an existing 443 * object. However, for Scope(), we want to indeed open a 444 * new scope. 445 */ 446 if (Op->Common.AmlOpcode != AML_SCOPE_OP) 447 { 448 Status = AcpiDsLoad2BeginOp (WalkState, NULL); 449 } 450 else 451 { 452 Status = AcpiDsScopeStackPush ( 453 Op->Named.Node, Op->Named.Node->Type, WalkState); 454 if (ACPI_FAILURE (Status)) 455 { 456 return_ACPI_STATUS (Status); 457 } 458 } 459 } 460 break; 461 462 case AML_CLASS_EXECUTE: 463 case AML_CLASS_CREATE: 464 465 break; 466 467 default: 468 469 break; 470 } 471 472 /* Nothing to do here during method execution */ 473 474 return_ACPI_STATUS (Status); 475 476 477 ErrorExit: 478 Status = AcpiDsMethodError (Status, WalkState); 479 return_ACPI_STATUS (Status); 480 } 481 482 483 /***************************************************************************** 484 * 485 * FUNCTION: AcpiDsExecEndOp 486 * 487 * PARAMETERS: WalkState - Current state of the parse tree walk 488 * 489 * RETURN: Status 490 * 491 * DESCRIPTION: Ascending callback used during the execution of control 492 * methods. The only thing we really need to do here is to 493 * notice the beginning of IF, ELSE, and WHILE blocks. 494 * 495 ****************************************************************************/ 496 497 ACPI_STATUS 498 AcpiDsExecEndOp ( 499 ACPI_WALK_STATE *WalkState) 500 { 501 ACPI_PARSE_OBJECT *Op; 502 ACPI_STATUS Status = AE_OK; 503 UINT32 OpType; 504 UINT32 OpClass; 505 ACPI_PARSE_OBJECT *NextOp; 506 ACPI_PARSE_OBJECT *FirstArg; 507 508 509 ACPI_FUNCTION_TRACE_PTR (DsExecEndOp, WalkState); 510 511 512 Op = WalkState->Op; 513 OpType = WalkState->OpInfo->Type; 514 OpClass = WalkState->OpInfo->Class; 515 516 if (OpClass == AML_CLASS_UNKNOWN) 517 { 518 ACPI_ERROR ((AE_INFO, "Unknown opcode 0x%X", Op->Common.AmlOpcode)); 519 return_ACPI_STATUS (AE_NOT_IMPLEMENTED); 520 } 521 522 FirstArg = Op->Common.Value.Arg; 523 524 /* Init the walk state */ 525 526 WalkState->NumOperands = 0; 527 WalkState->OperandIndex = 0; 528 WalkState->ReturnDesc = NULL; 529 WalkState->ResultObj = NULL; 530 531 /* Call debugger for single step support (DEBUG build only) */ 532 533 Status = AcpiDbSingleStep (WalkState, Op, OpClass); 534 if (ACPI_FAILURE (Status)) 535 { 536 return_ACPI_STATUS (Status); 537 } 538 539 /* Decode the Opcode Class */ 540 541 switch (OpClass) 542 { 543 case AML_CLASS_ARGUMENT: /* Constants, literals, etc. */ 544 545 if (WalkState->Opcode == AML_INT_NAMEPATH_OP) 546 { 547 Status = AcpiDsEvaluateNamePath (WalkState); 548 if (ACPI_FAILURE (Status)) 549 { 550 goto Cleanup; 551 } 552 } 553 break; 554 555 case AML_CLASS_EXECUTE: /* Most operators with arguments */ 556 557 /* Build resolved operand stack */ 558 559 Status = AcpiDsCreateOperands (WalkState, FirstArg); 560 if (ACPI_FAILURE (Status)) 561 { 562 goto Cleanup; 563 } 564 565 /* 566 * All opcodes require operand resolution, with the only exceptions 567 * being the ObjectType and SizeOf operators. 568 */ 569 if (!(WalkState->OpInfo->Flags & AML_NO_OPERAND_RESOLVE)) 570 { 571 /* Resolve all operands */ 572 573 Status = AcpiExResolveOperands (WalkState->Opcode, 574 &(WalkState->Operands [WalkState->NumOperands -1]), 575 WalkState); 576 } 577 578 if (ACPI_SUCCESS (Status)) 579 { 580 /* 581 * Dispatch the request to the appropriate interpreter handler 582 * routine. There is one routine per opcode "type" based upon the 583 * number of opcode arguments and return type. 584 */ 585 Status = AcpiGbl_OpTypeDispatch[OpType] (WalkState); 586 } 587 else 588 { 589 /* 590 * Treat constructs of the form "Store(LocalX,LocalX)" as noops when the 591 * Local is uninitialized. 592 */ 593 if ((Status == AE_AML_UNINITIALIZED_LOCAL) && 594 (WalkState->Opcode == AML_STORE_OP) && 595 (WalkState->Operands[0]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) && 596 (WalkState->Operands[1]->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) && 597 (WalkState->Operands[0]->Reference.Class == 598 WalkState->Operands[1]->Reference.Class) && 599 (WalkState->Operands[0]->Reference.Value == 600 WalkState->Operands[1]->Reference.Value)) 601 { 602 Status = AE_OK; 603 } 604 else 605 { 606 ACPI_EXCEPTION ((AE_INFO, Status, 607 "While resolving operands for [%s]", 608 AcpiPsGetOpcodeName (WalkState->Opcode))); 609 } 610 } 611 612 /* Always delete the argument objects and clear the operand stack */ 613 614 AcpiDsClearOperands (WalkState); 615 616 /* 617 * If a result object was returned from above, push it on the 618 * current result stack 619 */ 620 if (ACPI_SUCCESS (Status) && 621 WalkState->ResultObj) 622 { 623 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState); 624 } 625 break; 626 627 default: 628 629 switch (OpType) 630 { 631 case AML_TYPE_CONTROL: /* Type 1 opcode, IF/ELSE/WHILE/NOOP */ 632 633 /* 1 Operand, 0 ExternalResult, 0 InternalResult */ 634 635 Status = AcpiDsExecEndControlOp (WalkState, Op); 636 637 break; 638 639 case AML_TYPE_METHOD_CALL: 640 /* 641 * If the method is referenced from within a package 642 * declaration, it is not a invocation of the method, just 643 * a reference to it. 644 */ 645 if ((Op->Asl.Parent) && 646 ((Op->Asl.Parent->Asl.AmlOpcode == AML_PACKAGE_OP) || 647 (Op->Asl.Parent->Asl.AmlOpcode == AML_VARIABLE_PACKAGE_OP))) 648 { 649 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 650 "Method Reference in a Package, Op=%p\n", Op)); 651 652 Op->Common.Node = (ACPI_NAMESPACE_NODE *) 653 Op->Asl.Value.Arg->Asl.Node; 654 AcpiUtAddReference (Op->Asl.Value.Arg->Asl.Node->Object); 655 return_ACPI_STATUS (AE_OK); 656 } 657 658 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 659 "Method invocation, Op=%p\n", Op)); 660 661 /* 662 * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains 663 * the method Node pointer 664 */ 665 /* NextOp points to the op that holds the method name */ 666 667 NextOp = FirstArg; 668 669 /* NextOp points to first argument op */ 670 671 NextOp = NextOp->Common.Next; 672 673 /* 674 * Get the method's arguments and put them on the operand stack 675 */ 676 Status = AcpiDsCreateOperands (WalkState, NextOp); 677 if (ACPI_FAILURE (Status)) 678 { 679 break; 680 } 681 682 /* 683 * Since the operands will be passed to another control method, 684 * we must resolve all local references here (Local variables, 685 * arguments to *this* method, etc.) 686 */ 687 Status = AcpiDsResolveOperands (WalkState); 688 if (ACPI_FAILURE (Status)) 689 { 690 /* On error, clear all resolved operands */ 691 692 AcpiDsClearOperands (WalkState); 693 break; 694 } 695 696 /* 697 * Tell the walk loop to preempt this running method and 698 * execute the new method 699 */ 700 Status = AE_CTRL_TRANSFER; 701 702 /* 703 * Return now; we don't want to disturb anything, 704 * especially the operand count! 705 */ 706 return_ACPI_STATUS (Status); 707 708 case AML_TYPE_CREATE_FIELD: 709 710 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 711 "Executing CreateField Buffer/Index Op=%p\n", Op)); 712 713 Status = AcpiDsLoad2EndOp (WalkState); 714 if (ACPI_FAILURE (Status)) 715 { 716 break; 717 } 718 719 Status = AcpiDsEvalBufferFieldOperands (WalkState, Op); 720 break; 721 722 723 case AML_TYPE_CREATE_OBJECT: 724 725 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 726 "Executing CreateObject (Buffer/Package) Op=%p AMLPtr=%p\n", 727 Op, Op->Named.Data)); 728 729 switch (Op->Common.Parent->Common.AmlOpcode) 730 { 731 case AML_NAME_OP: 732 /* 733 * Put the Node on the object stack (Contains the ACPI Name 734 * of this object) 735 */ 736 WalkState->Operands[0] = (void *) 737 Op->Common.Parent->Common.Node; 738 WalkState->NumOperands = 1; 739 740 Status = AcpiDsCreateNode (WalkState, 741 Op->Common.Parent->Common.Node, Op->Common.Parent); 742 if (ACPI_FAILURE (Status)) 743 { 744 break; 745 } 746 747 /* Fall through */ 748 /*lint -fallthrough */ 749 750 case AML_INT_EVAL_SUBTREE_OP: 751 752 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, 753 AcpiNsGetAttachedObject (Op->Common.Parent->Common.Node)); 754 break; 755 756 default: 757 758 Status = AcpiDsEvalDataObjectOperands (WalkState, Op, NULL); 759 break; 760 } 761 762 /* 763 * If a result object was returned from above, push it on the 764 * current result stack 765 */ 766 if (WalkState->ResultObj) 767 { 768 Status = AcpiDsResultPush (WalkState->ResultObj, WalkState); 769 } 770 break; 771 772 case AML_TYPE_NAMED_FIELD: 773 case AML_TYPE_NAMED_COMPLEX: 774 case AML_TYPE_NAMED_SIMPLE: 775 case AML_TYPE_NAMED_NO_OBJ: 776 777 Status = AcpiDsLoad2EndOp (WalkState); 778 if (ACPI_FAILURE (Status)) 779 { 780 break; 781 } 782 783 if (Op->Common.AmlOpcode == AML_REGION_OP) 784 { 785 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 786 "Executing OpRegion Address/Length Op=%p\n", Op)); 787 788 Status = AcpiDsEvalRegionOperands (WalkState, Op); 789 if (ACPI_FAILURE (Status)) 790 { 791 break; 792 } 793 } 794 else if (Op->Common.AmlOpcode == AML_DATA_REGION_OP) 795 { 796 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 797 "Executing DataTableRegion Strings Op=%p\n", Op)); 798 799 Status = AcpiDsEvalTableRegionOperands (WalkState, Op); 800 if (ACPI_FAILURE (Status)) 801 { 802 break; 803 } 804 } 805 else if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP) 806 { 807 ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, 808 "Executing BankField Op=%p\n", Op)); 809 810 Status = AcpiDsEvalBankFieldOperands (WalkState, Op); 811 if (ACPI_FAILURE (Status)) 812 { 813 break; 814 } 815 } 816 break; 817 818 case AML_TYPE_UNDEFINED: 819 820 ACPI_ERROR ((AE_INFO, 821 "Undefined opcode type Op=%p", Op)); 822 return_ACPI_STATUS (AE_NOT_IMPLEMENTED); 823 824 case AML_TYPE_BOGUS: 825 826 ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, 827 "Internal opcode=%X type Op=%p\n", 828 WalkState->Opcode, Op)); 829 break; 830 831 default: 832 833 ACPI_ERROR ((AE_INFO, 834 "Unimplemented opcode, class=0x%X " 835 "type=0x%X Opcode=0x%X Op=%p", 836 OpClass, OpType, Op->Common.AmlOpcode, Op)); 837 838 Status = AE_NOT_IMPLEMENTED; 839 break; 840 } 841 } 842 843 /* 844 * ACPI 2.0 support for 64-bit integers: Truncate numeric 845 * result value if we are executing from a 32-bit ACPI table 846 */ 847 (void) AcpiExTruncateFor32bitTable (WalkState->ResultObj); 848 849 /* 850 * Check if we just completed the evaluation of a 851 * conditional predicate 852 */ 853 if ((ACPI_SUCCESS (Status)) && 854 (WalkState->ControlState) && 855 (WalkState->ControlState->Common.State == 856 ACPI_CONTROL_PREDICATE_EXECUTING) && 857 (WalkState->ControlState->Control.PredicateOp == Op)) 858 { 859 Status = AcpiDsGetPredicateValue (WalkState, WalkState->ResultObj); 860 WalkState->ResultObj = NULL; 861 } 862 863 864 Cleanup: 865 866 if (WalkState->ResultObj) 867 { 868 /* Break to debugger to display result */ 869 870 AcpiDbDisplayResultObject (WalkState->ResultObj,WalkState); 871 872 /* 873 * Delete the result op if and only if: 874 * Parent will not use the result -- such as any 875 * non-nested type2 op in a method (parent will be method) 876 */ 877 AcpiDsDeleteResultIfNotUsed (Op, WalkState->ResultObj, WalkState); 878 } 879 880 #ifdef _UNDER_DEVELOPMENT 881 882 if (WalkState->ParserState.Aml == WalkState->ParserState.AmlEnd) 883 { 884 AcpiDbMethodEnd (WalkState); 885 } 886 #endif 887 888 /* Invoke exception handler on error */ 889 890 if (ACPI_FAILURE (Status)) 891 { 892 Status = AcpiDsMethodError (Status, WalkState); 893 } 894 895 /* Always clear the object stack */ 896 897 WalkState->NumOperands = 0; 898 return_ACPI_STATUS (Status); 899 } 900