1 /****************************************************************************** 2 * 3 * Module Name: adwalk - Application-level disassembler parse tree walk routines 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2010, 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 *****************************************************************************/ 115 116 117 #include <contrib/dev/acpica/include/acpi.h> 118 #include <contrib/dev/acpica/include/accommon.h> 119 #include <contrib/dev/acpica/include/acparser.h> 120 #include <contrib/dev/acpica/include/amlcode.h> 121 #include <contrib/dev/acpica/include/acdisasm.h> 122 #include <contrib/dev/acpica/include/acdispat.h> 123 #include <contrib/dev/acpica/include/acnamesp.h> 124 #include <contrib/dev/acpica/include/acapps.h> 125 126 127 #define _COMPONENT ACPI_TOOLS 128 ACPI_MODULE_NAME ("adwalk") 129 130 /* 131 * aslmap - opcode mappings and reserved method names 132 */ 133 ACPI_OBJECT_TYPE 134 AslMapNamedOpcodeToDataType ( 135 UINT16 Opcode); 136 137 /* Local prototypes */ 138 139 static ACPI_STATUS 140 AcpiDmFindOrphanDescending ( 141 ACPI_PARSE_OBJECT *Op, 142 UINT32 Level, 143 void *Context); 144 145 static ACPI_STATUS 146 AcpiDmDumpDescending ( 147 ACPI_PARSE_OBJECT *Op, 148 UINT32 Level, 149 void *Context); 150 151 static ACPI_STATUS 152 AcpiDmXrefDescendingOp ( 153 ACPI_PARSE_OBJECT *Op, 154 UINT32 Level, 155 void *Context); 156 157 static ACPI_STATUS 158 AcpiDmCommonAscendingOp ( 159 ACPI_PARSE_OBJECT *Op, 160 UINT32 Level, 161 void *Context); 162 163 static ACPI_STATUS 164 AcpiDmLoadDescendingOp ( 165 ACPI_PARSE_OBJECT *Op, 166 UINT32 Level, 167 void *Context); 168 169 static UINT32 170 AcpiDmInspectPossibleArgs ( 171 UINT32 CurrentOpArgCount, 172 UINT32 TargetCount, 173 ACPI_PARSE_OBJECT *Op); 174 175 static ACPI_STATUS 176 AcpiDmResourceDescendingOp ( 177 ACPI_PARSE_OBJECT *Op, 178 UINT32 Level, 179 void *Context); 180 181 182 /******************************************************************************* 183 * 184 * FUNCTION: AcpiDmDumpTree 185 * 186 * PARAMETERS: Origin - Starting object 187 * 188 * RETURN: None 189 * 190 * DESCRIPTION: Parse tree walk to format and output the nodes 191 * 192 ******************************************************************************/ 193 194 void 195 AcpiDmDumpTree ( 196 ACPI_PARSE_OBJECT *Origin) 197 { 198 ACPI_OP_WALK_INFO Info; 199 200 201 if (!Origin) 202 { 203 return; 204 } 205 206 AcpiOsPrintf ("/*\nAML Parse Tree\n\n"); 207 Info.Flags = 0; 208 Info.Count = 0; 209 Info.Level = 0; 210 Info.WalkState = NULL; 211 AcpiDmWalkParseTree (Origin, AcpiDmDumpDescending, NULL, &Info); 212 AcpiOsPrintf ("*/\n\n"); 213 } 214 215 216 /******************************************************************************* 217 * 218 * FUNCTION: AcpiDmFindOrphanMethods 219 * 220 * PARAMETERS: Origin - Starting object 221 * 222 * RETURN: None 223 * 224 * DESCRIPTION: Parse tree walk to find "orphaned" method invocations -- methods 225 * that are not resolved in the namespace 226 * 227 ******************************************************************************/ 228 229 void 230 AcpiDmFindOrphanMethods ( 231 ACPI_PARSE_OBJECT *Origin) 232 { 233 ACPI_OP_WALK_INFO Info; 234 235 236 if (!Origin) 237 { 238 return; 239 } 240 241 Info.Flags = 0; 242 Info.Level = 0; 243 Info.WalkState = NULL; 244 AcpiDmWalkParseTree (Origin, AcpiDmFindOrphanDescending, NULL, &Info); 245 } 246 247 248 /******************************************************************************* 249 * 250 * FUNCTION: AcpiDmFinishNamespaceLoad 251 * 252 * PARAMETERS: ParseTreeRoot - Root of the parse tree 253 * NamespaceRoot - Root of the internal namespace 254 * OwnerId - OwnerId of the table to be disassembled 255 * 256 * RETURN: None 257 * 258 * DESCRIPTION: Load all namespace items that are created within control 259 * methods. Used before namespace cross reference 260 * 261 ******************************************************************************/ 262 263 void 264 AcpiDmFinishNamespaceLoad ( 265 ACPI_PARSE_OBJECT *ParseTreeRoot, 266 ACPI_NAMESPACE_NODE *NamespaceRoot, 267 ACPI_OWNER_ID OwnerId) 268 { 269 ACPI_STATUS Status; 270 ACPI_OP_WALK_INFO Info; 271 ACPI_WALK_STATE *WalkState; 272 273 274 if (!ParseTreeRoot) 275 { 276 return; 277 } 278 279 /* Create and initialize a new walk state */ 280 281 WalkState = AcpiDsCreateWalkState (OwnerId, ParseTreeRoot, NULL, NULL); 282 if (!WalkState) 283 { 284 return; 285 } 286 287 Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, WalkState); 288 if (ACPI_FAILURE (Status)) 289 { 290 return; 291 } 292 293 Info.Flags = 0; 294 Info.Level = 0; 295 Info.WalkState = WalkState; 296 AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmLoadDescendingOp, 297 AcpiDmCommonAscendingOp, &Info); 298 ACPI_FREE (WalkState); 299 } 300 301 302 /******************************************************************************* 303 * 304 * FUNCTION: AcpiDmCrossReferenceNamespace 305 * 306 * PARAMETERS: ParseTreeRoot - Root of the parse tree 307 * NamespaceRoot - Root of the internal namespace 308 * OwnerId - OwnerId of the table to be disassembled 309 * 310 * RETURN: None 311 * 312 * DESCRIPTION: Cross reference the namespace to create externals 313 * 314 ******************************************************************************/ 315 316 void 317 AcpiDmCrossReferenceNamespace ( 318 ACPI_PARSE_OBJECT *ParseTreeRoot, 319 ACPI_NAMESPACE_NODE *NamespaceRoot, 320 ACPI_OWNER_ID OwnerId) 321 { 322 ACPI_STATUS Status; 323 ACPI_OP_WALK_INFO Info; 324 ACPI_WALK_STATE *WalkState; 325 326 327 if (!ParseTreeRoot) 328 { 329 return; 330 } 331 332 /* Create and initialize a new walk state */ 333 334 WalkState = AcpiDsCreateWalkState (OwnerId, ParseTreeRoot, NULL, NULL); 335 if (!WalkState) 336 { 337 return; 338 } 339 340 Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, WalkState); 341 if (ACPI_FAILURE (Status)) 342 { 343 return; 344 } 345 346 Info.Flags = 0; 347 Info.Level = 0; 348 Info.WalkState = WalkState; 349 AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmXrefDescendingOp, 350 AcpiDmCommonAscendingOp, &Info); 351 ACPI_FREE (WalkState); 352 } 353 354 355 /******************************************************************************* 356 * 357 * FUNCTION: AcpiDmConvertResourceIndexes 358 * 359 * PARAMETERS: ParseTreeRoot - Root of the parse tree 360 * NamespaceRoot - Root of the internal namespace 361 * 362 * RETURN: None 363 * 364 * DESCRIPTION: Convert fixed-offset references to resource descriptors to 365 * symbolic references. Should only be called after namespace has 366 * been cross referenced. 367 * 368 ******************************************************************************/ 369 370 void 371 AcpiDmConvertResourceIndexes ( 372 ACPI_PARSE_OBJECT *ParseTreeRoot, 373 ACPI_NAMESPACE_NODE *NamespaceRoot) 374 { 375 ACPI_STATUS Status; 376 ACPI_OP_WALK_INFO Info; 377 ACPI_WALK_STATE *WalkState; 378 379 380 if (!ParseTreeRoot) 381 { 382 return; 383 } 384 385 /* Create and initialize a new walk state */ 386 387 WalkState = AcpiDsCreateWalkState (0, ParseTreeRoot, NULL, NULL); 388 if (!WalkState) 389 { 390 return; 391 } 392 393 Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, WalkState); 394 if (ACPI_FAILURE (Status)) 395 { 396 return; 397 } 398 399 Info.Flags = 0; 400 Info.Level = 0; 401 Info.WalkState = WalkState; 402 AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmResourceDescendingOp, 403 AcpiDmCommonAscendingOp, &Info); 404 ACPI_FREE (WalkState); 405 return; 406 } 407 408 409 /******************************************************************************* 410 * 411 * FUNCTION: AcpiDmDumpDescending 412 * 413 * PARAMETERS: ASL_WALK_CALLBACK 414 * 415 * RETURN: Status 416 * 417 * DESCRIPTION: Format and print contents of one parse Op. 418 * 419 ******************************************************************************/ 420 421 static ACPI_STATUS 422 AcpiDmDumpDescending ( 423 ACPI_PARSE_OBJECT *Op, 424 UINT32 Level, 425 void *Context) 426 { 427 ACPI_OP_WALK_INFO *Info = Context; 428 char *Path; 429 430 431 if (!Op) 432 { 433 return (AE_OK); 434 } 435 436 /* Most of the information (count, level, name) here */ 437 438 Info->Count++; 439 AcpiOsPrintf ("% 5d [%2.2d] ", Info->Count, Level); 440 AcpiDmIndent (Level); 441 AcpiOsPrintf ("%-28s", AcpiPsGetOpcodeName (Op->Common.AmlOpcode)); 442 443 /* Extra info is helpful */ 444 445 switch (Op->Common.AmlOpcode) 446 { 447 case AML_BYTE_OP: 448 case AML_WORD_OP: 449 case AML_DWORD_OP: 450 AcpiOsPrintf ("%X", (UINT32) Op->Common.Value.Integer); 451 break; 452 453 case AML_INT_NAMEPATH_OP: 454 if (Op->Common.Value.String) 455 { 456 AcpiNsExternalizeName (ACPI_UINT32_MAX, Op->Common.Value.String, 457 NULL, &Path); 458 AcpiOsPrintf ("%s %p", Path, Op->Common.Node); 459 ACPI_FREE (Path); 460 } 461 else 462 { 463 AcpiOsPrintf ("[NULL]"); 464 } 465 break; 466 467 case AML_NAME_OP: 468 case AML_METHOD_OP: 469 case AML_DEVICE_OP: 470 case AML_INT_NAMEDFIELD_OP: 471 AcpiOsPrintf ("%4.4s", ACPI_CAST_PTR (char, &Op->Named.Name)); 472 break; 473 474 default: 475 break; 476 } 477 478 AcpiOsPrintf ("\n"); 479 return (AE_OK); 480 } 481 482 483 /******************************************************************************* 484 * 485 * FUNCTION: AcpiDmFindOrphanDescending 486 * 487 * PARAMETERS: ASL_WALK_CALLBACK 488 * 489 * RETURN: Status 490 * 491 * DESCRIPTION: Check namepath Ops for orphaned method invocations 492 * 493 * Note: Experimental. 494 * 495 ******************************************************************************/ 496 497 static ACPI_STATUS 498 AcpiDmFindOrphanDescending ( 499 ACPI_PARSE_OBJECT *Op, 500 UINT32 Level, 501 void *Context) 502 { 503 const ACPI_OPCODE_INFO *OpInfo; 504 ACPI_PARSE_OBJECT *ChildOp; 505 ACPI_PARSE_OBJECT *NextOp; 506 ACPI_PARSE_OBJECT *ParentOp; 507 UINT32 ArgCount; 508 509 510 if (!Op) 511 { 512 return (AE_OK); 513 } 514 515 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 516 517 switch (Op->Common.AmlOpcode) 518 { 519 #ifdef ACPI_UNDER_DEVELOPMENT 520 case AML_ADD_OP: 521 ChildOp = Op->Common.Value.Arg; 522 if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && 523 !ChildOp->Common.Node) 524 { 525 AcpiNsExternalizeName (ACPI_UINT32_MAX, ChildOp->Common.Value.String, 526 NULL, &Path); 527 AcpiOsPrintf ("/* %-16s A-NAMEPATH: %s */\n", Op->Common.AmlOpName, Path); 528 ACPI_FREE (Path); 529 530 NextOp = Op->Common.Next; 531 if (!NextOp) 532 { 533 /* This NamePath has no args, assume it is an integer */ 534 535 AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0); 536 return (AE_OK); 537 } 538 539 ArgCount = AcpiDmInspectPossibleArgs (3, 1, NextOp); 540 AcpiOsPrintf ("/* A-CHILDREN: %d Actual %d */\n", ArgCount, AcpiDmCountChildren (Op)); 541 542 if (ArgCount < 1) 543 { 544 /* One Arg means this is just a Store(Name,Target) */ 545 546 AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0); 547 return (AE_OK); 548 } 549 550 AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount); 551 } 552 break; 553 #endif 554 555 case AML_STORE_OP: 556 557 ChildOp = Op->Common.Value.Arg; 558 if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && 559 !ChildOp->Common.Node) 560 { 561 NextOp = Op->Common.Next; 562 if (!NextOp) 563 { 564 /* This NamePath has no args, assume it is an integer */ 565 566 AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0); 567 return (AE_OK); 568 } 569 570 ArgCount = AcpiDmInspectPossibleArgs (2, 1, NextOp); 571 if (ArgCount <= 1) 572 { 573 /* One Arg means this is just a Store(Name,Target) */ 574 575 AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0); 576 return (AE_OK); 577 } 578 579 AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount); 580 } 581 break; 582 583 case AML_INT_NAMEPATH_OP: 584 585 /* Must examine parent to see if this namepath is an argument */ 586 587 ParentOp = Op->Common.Parent; 588 OpInfo = AcpiPsGetOpcodeInfo (ParentOp->Common.AmlOpcode); 589 590 if ((OpInfo->Class != AML_CLASS_EXECUTE) && 591 (OpInfo->Class != AML_CLASS_CREATE) && 592 (ParentOp->Common.AmlOpcode != AML_INT_METHODCALL_OP) && 593 !Op->Common.Node) 594 { 595 ArgCount = AcpiDmInspectPossibleArgs (0, 0, Op->Common.Next); 596 597 /* 598 * Check if namepath is a predicate for if/while or lone parameter to 599 * a return. 600 */ 601 if (ArgCount == 0) 602 { 603 if (((ParentOp->Common.AmlOpcode == AML_IF_OP) || 604 (ParentOp->Common.AmlOpcode == AML_WHILE_OP) || 605 (ParentOp->Common.AmlOpcode == AML_RETURN_OP)) && 606 607 /* And namepath is the first argument */ 608 (ParentOp->Common.Value.Arg == Op)) 609 { 610 AcpiDmAddToExternalList (Op, Op->Common.Value.String, ACPI_TYPE_INTEGER, 0); 611 break; 612 } 613 } 614 615 /* 616 * This is a standalone namestring (not a parameter to another 617 * operator) - it *must* be a method invocation, nothing else is 618 * grammatically possible. 619 */ 620 AcpiDmAddToExternalList (Op, Op->Common.Value.String, ACPI_TYPE_METHOD, ArgCount); 621 622 } 623 break; 624 625 default: 626 break; 627 } 628 629 return (AE_OK); 630 } 631 632 633 /******************************************************************************* 634 * 635 * FUNCTION: AcpiDmLoadDescendingOp 636 * 637 * PARAMETERS: ASL_WALK_CALLBACK 638 * 639 * RETURN: Status 640 * 641 * DESCRIPTION: Descending handler for namespace control method object load 642 * 643 ******************************************************************************/ 644 645 static ACPI_STATUS 646 AcpiDmLoadDescendingOp ( 647 ACPI_PARSE_OBJECT *Op, 648 UINT32 Level, 649 void *Context) 650 { 651 ACPI_OP_WALK_INFO *Info = Context; 652 const ACPI_OPCODE_INFO *OpInfo; 653 ACPI_WALK_STATE *WalkState; 654 ACPI_OBJECT_TYPE ObjectType; 655 ACPI_STATUS Status; 656 char *Path = NULL; 657 ACPI_PARSE_OBJECT *NextOp; 658 ACPI_NAMESPACE_NODE *Node; 659 char FieldPath[5]; 660 BOOLEAN PreDefined = FALSE; 661 UINT8 PreDefineIndex = 0; 662 663 664 WalkState = Info->WalkState; 665 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 666 ObjectType = OpInfo->ObjectType; 667 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 668 669 /* Only interested in operators that create new names */ 670 671 if (!(OpInfo->Flags & AML_NAMED) && 672 !(OpInfo->Flags & AML_CREATE)) 673 { 674 goto Exit; 675 } 676 677 /* Get the NamePath from the appropriate place */ 678 679 if (OpInfo->Flags & AML_NAMED) 680 { 681 /* For all named operators, get the new name */ 682 683 Path = (char *) Op->Named.Path; 684 685 if (!Path && Op->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP) 686 { 687 *ACPI_CAST_PTR (UINT32, &FieldPath[0]) = Op->Named.Name; 688 FieldPath[4] = 0; 689 Path = FieldPath; 690 } 691 } 692 else if (OpInfo->Flags & AML_CREATE) 693 { 694 /* New name is the last child */ 695 696 NextOp = Op->Common.Value.Arg; 697 698 while (NextOp->Common.Next) 699 { 700 NextOp = NextOp->Common.Next; 701 } 702 Path = NextOp->Common.Value.String; 703 } 704 705 if (!Path) 706 { 707 goto Exit; 708 } 709 710 /* Insert the name into the namespace */ 711 712 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 713 ACPI_IMODE_LOAD_PASS2, ACPI_NS_DONT_OPEN_SCOPE, 714 WalkState, &Node); 715 716 Op->Common.Node = Node; 717 718 if (ACPI_SUCCESS (Status)) 719 { 720 /* Check if it's a predefined node */ 721 722 while (AcpiGbl_PreDefinedNames[PreDefineIndex].Name) 723 { 724 if (!ACPI_STRNCMP (Node->Name.Ascii, 725 AcpiGbl_PreDefinedNames[PreDefineIndex].Name, 4)) 726 { 727 PreDefined = TRUE; 728 break; 729 } 730 731 PreDefineIndex++; 732 } 733 734 /* 735 * Set node owner id if it satisfies all the following conditions: 736 * 1) Not a predefined node, _SB_ etc 737 * 2) Not the root node 738 * 3) Not a node created by Scope 739 */ 740 741 if (!PreDefined && Node != AcpiGbl_RootNode && 742 Op->Common.AmlOpcode != AML_SCOPE_OP) 743 { 744 Node->OwnerId = WalkState->OwnerId; 745 } 746 } 747 748 749 Exit: 750 751 if (AcpiNsOpensScope (ObjectType)) 752 { 753 if (Op->Common.Node) 754 { 755 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, WalkState); 756 if (ACPI_FAILURE (Status)) 757 { 758 return (Status); 759 } 760 } 761 } 762 763 return (AE_OK); 764 } 765 766 767 /******************************************************************************* 768 * 769 * FUNCTION: AcpiDmXrefDescendingOp 770 * 771 * PARAMETERS: ASL_WALK_CALLBACK 772 * 773 * RETURN: Status 774 * 775 * DESCRIPTION: Descending handler for namespace cross reference 776 * 777 ******************************************************************************/ 778 779 static ACPI_STATUS 780 AcpiDmXrefDescendingOp ( 781 ACPI_PARSE_OBJECT *Op, 782 UINT32 Level, 783 void *Context) 784 { 785 ACPI_OP_WALK_INFO *Info = Context; 786 const ACPI_OPCODE_INFO *OpInfo; 787 ACPI_WALK_STATE *WalkState; 788 ACPI_OBJECT_TYPE ObjectType; 789 ACPI_OBJECT_TYPE ObjectType2; 790 ACPI_STATUS Status; 791 char *Path = NULL; 792 ACPI_PARSE_OBJECT *NextOp; 793 ACPI_NAMESPACE_NODE *Node; 794 ACPI_OPERAND_OBJECT *Object; 795 796 797 WalkState = Info->WalkState; 798 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 799 ObjectType = OpInfo->ObjectType; 800 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 801 802 if ((!(OpInfo->Flags & AML_NAMED)) && 803 (!(OpInfo->Flags & AML_CREATE)) && 804 (Op->Common.AmlOpcode != AML_INT_NAMEPATH_OP)) 805 { 806 goto Exit; 807 } 808 809 /* Get the NamePath from the appropriate place */ 810 811 if (OpInfo->Flags & AML_NAMED) 812 { 813 if ((Op->Common.AmlOpcode == AML_ALIAS_OP) || 814 (Op->Common.AmlOpcode == AML_SCOPE_OP)) 815 { 816 /* 817 * Only these two operators refer to an existing name, 818 * first argument 819 */ 820 Path = (char *) Op->Named.Path; 821 } 822 } 823 else if (OpInfo->Flags & AML_CREATE) 824 { 825 /* Referenced Buffer Name is the first child */ 826 827 NextOp = Op->Common.Value.Arg; 828 if (NextOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) 829 { 830 Path = NextOp->Common.Value.String; 831 } 832 } 833 else 834 { 835 Path = Op->Common.Value.String; 836 } 837 838 if (!Path) 839 { 840 goto Exit; 841 } 842 843 /* 844 * Lookup the name in the namespace. Name must exist at this point, or it 845 * is an invalid reference. 846 * 847 * The namespace is also used as a lookup table for references to resource 848 * descriptors and the fields within them. 849 */ 850 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, 851 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, 852 WalkState, &Node); 853 if (ACPI_FAILURE (Status)) 854 { 855 if (Status == AE_NOT_FOUND) 856 { 857 AcpiDmAddToExternalList (Op, Path, (UINT8) ObjectType, 0); 858 859 /* 860 * We could install this into the namespace, but we catch duplicate 861 * externals when they are added to the list. 862 */ 863 #if 0 864 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, 865 ACPI_IMODE_LOAD_PASS1, ACPI_NS_DONT_OPEN_SCOPE, 866 WalkState, &Node); 867 #endif 868 } 869 } 870 871 /* 872 * Found the node in external table, add it to external list 873 * Node->OwnerId == 0 indicates built-in ACPI Names, _OS_ etc 874 */ 875 else if (Node->OwnerId && WalkState->OwnerId != Node->OwnerId) 876 { 877 ObjectType2 = ObjectType; 878 879 Object = AcpiNsGetAttachedObject (Node); 880 if (Object) 881 { 882 ObjectType2 = Object->Common.Type; 883 } 884 885 if (ObjectType2 == ACPI_TYPE_METHOD) 886 { 887 AcpiDmAddToExternalList (Op, Path, ACPI_TYPE_METHOD, 888 Object->Method.ParamCount); 889 } 890 else 891 { 892 AcpiDmAddToExternalList (Op, Path, (UINT8) ObjectType2, 0); 893 } 894 895 Op->Common.Node = Node; 896 } 897 else 898 { 899 Op->Common.Node = Node; 900 } 901 902 903 Exit: 904 /* Open new scope if necessary */ 905 906 if (AcpiNsOpensScope (ObjectType)) 907 { 908 if (Op->Common.Node) 909 { 910 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, WalkState); 911 if (ACPI_FAILURE (Status)) 912 { 913 return (Status); 914 } 915 } 916 } 917 918 return (AE_OK); 919 } 920 921 922 /******************************************************************************* 923 * 924 * FUNCTION: AcpiDmResourceDescendingOp 925 * 926 * PARAMETERS: ASL_WALK_CALLBACK 927 * 928 * RETURN: None 929 * 930 * DESCRIPTION: Process one parse op during symbolic resource index conversion. 931 * 932 ******************************************************************************/ 933 934 static ACPI_STATUS 935 AcpiDmResourceDescendingOp ( 936 ACPI_PARSE_OBJECT *Op, 937 UINT32 Level, 938 void *Context) 939 { 940 ACPI_OP_WALK_INFO *Info = Context; 941 const ACPI_OPCODE_INFO *OpInfo; 942 ACPI_WALK_STATE *WalkState; 943 ACPI_OBJECT_TYPE ObjectType; 944 ACPI_STATUS Status; 945 946 947 WalkState = Info->WalkState; 948 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 949 950 /* Open new scope if necessary */ 951 952 ObjectType = OpInfo->ObjectType; 953 if (AcpiNsOpensScope (ObjectType)) 954 { 955 if (Op->Common.Node) 956 { 957 958 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, WalkState); 959 if (ACPI_FAILURE (Status)) 960 { 961 return (Status); 962 } 963 } 964 } 965 966 /* 967 * Check if this operator contains a reference to a resource descriptor. 968 * If so, convert the reference into a symbolic reference. 969 */ 970 AcpiDmCheckResourceReference (Op, WalkState); 971 return (AE_OK); 972 } 973 974 975 /******************************************************************************* 976 * 977 * FUNCTION: AcpiDmCommonAscendingOp 978 * 979 * PARAMETERS: ASL_WALK_CALLBACK 980 * 981 * RETURN: None 982 * 983 * DESCRIPTION: Ascending handler for combined parse/namespace walks. Closes 984 * scope if necessary. 985 * 986 ******************************************************************************/ 987 988 static ACPI_STATUS 989 AcpiDmCommonAscendingOp ( 990 ACPI_PARSE_OBJECT *Op, 991 UINT32 Level, 992 void *Context) 993 { 994 ACPI_OP_WALK_INFO *Info = Context; 995 const ACPI_OPCODE_INFO *OpInfo; 996 ACPI_OBJECT_TYPE ObjectType; 997 998 999 /* Close scope if necessary */ 1000 1001 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 1002 ObjectType = OpInfo->ObjectType; 1003 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 1004 1005 if (AcpiNsOpensScope (ObjectType)) 1006 { 1007 (void) AcpiDsScopeStackPop (Info->WalkState); 1008 } 1009 1010 return (AE_OK); 1011 } 1012 1013 1014 /******************************************************************************* 1015 * 1016 * FUNCTION: AcpiDmInspectPossibleArgs 1017 * 1018 * PARAMETERS: CurrentOpArgCount - Which arg of the current op was the 1019 * possible method invocation found 1020 * TargetCount - Number of targets (0,1,2) for this op 1021 * Op - Parse op 1022 * 1023 * RETURN: Status 1024 * 1025 * DESCRIPTION: Examine following args and next ops for possible arguments 1026 * for an unrecognized method invocation. 1027 * 1028 ******************************************************************************/ 1029 1030 static UINT32 1031 AcpiDmInspectPossibleArgs ( 1032 UINT32 CurrentOpArgCount, 1033 UINT32 TargetCount, 1034 ACPI_PARSE_OBJECT *Op) 1035 { 1036 const ACPI_OPCODE_INFO *OpInfo; 1037 UINT32 i; 1038 UINT32 Last = 0; 1039 UINT32 Lookahead; 1040 1041 1042 Lookahead = (ACPI_METHOD_NUM_ARGS + TargetCount) - CurrentOpArgCount; 1043 1044 /* Lookahead for the maximum number of possible arguments */ 1045 1046 for (i = 0; i < Lookahead; i++) 1047 { 1048 if (!Op) 1049 { 1050 break; 1051 } 1052 1053 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 1054 1055 /* 1056 * Any one of these operators is "very probably" not a method arg 1057 */ 1058 if ((Op->Common.AmlOpcode == AML_STORE_OP) || 1059 (Op->Common.AmlOpcode == AML_NOTIFY_OP)) 1060 { 1061 break; 1062 } 1063 1064 if ((OpInfo->Class != AML_CLASS_EXECUTE) && 1065 (OpInfo->Class != AML_CLASS_CONTROL)) 1066 { 1067 Last = i+1; 1068 } 1069 1070 Op = Op->Common.Next; 1071 } 1072 1073 return (Last); 1074 } 1075 1076 1077