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 - 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 "amlcode.h" 156 #include "acdisasm.h" 157 #include "acdispat.h" 158 #include "acnamesp.h" 159 #include "acapps.h" 160 161 162 #define _COMPONENT ACPI_TOOLS 163 ACPI_MODULE_NAME ("adwalk") 164 165 /* 166 * aslmap - opcode mappings and reserved method names 167 */ 168 ACPI_OBJECT_TYPE 169 AslMapNamedOpcodeToDataType ( 170 UINT16 Opcode); 171 172 /* Local prototypes */ 173 174 static ACPI_STATUS 175 AcpiDmFindOrphanDescending ( 176 ACPI_PARSE_OBJECT *Op, 177 UINT32 Level, 178 void *Context); 179 180 static ACPI_STATUS 181 AcpiDmDumpDescending ( 182 ACPI_PARSE_OBJECT *Op, 183 UINT32 Level, 184 void *Context); 185 186 static ACPI_STATUS 187 AcpiDmXrefDescendingOp ( 188 ACPI_PARSE_OBJECT *Op, 189 UINT32 Level, 190 void *Context); 191 192 static ACPI_STATUS 193 AcpiDmCommonAscendingOp ( 194 ACPI_PARSE_OBJECT *Op, 195 UINT32 Level, 196 void *Context); 197 198 static ACPI_STATUS 199 AcpiDmLoadDescendingOp ( 200 ACPI_PARSE_OBJECT *Op, 201 UINT32 Level, 202 void *Context); 203 204 static UINT32 205 AcpiDmInspectPossibleArgs ( 206 UINT32 CurrentOpArgCount, 207 UINT32 TargetCount, 208 ACPI_PARSE_OBJECT *Op); 209 210 static ACPI_STATUS 211 AcpiDmCommonDescendingOp ( 212 ACPI_PARSE_OBJECT *Op, 213 UINT32 Level, 214 void *Context); 215 216 static ACPI_STATUS 217 AcpiDmProcessResourceDescriptors ( 218 ACPI_PARSE_OBJECT *Op, 219 UINT32 Level, 220 void *Context); 221 222 /******************************************************************************* 223 * 224 * FUNCTION: AcpiDmDumpTree 225 * 226 * PARAMETERS: Origin - Starting object 227 * 228 * RETURN: None 229 * 230 * DESCRIPTION: Parse tree walk to format and output the nodes 231 * 232 ******************************************************************************/ 233 234 void 235 AcpiDmDumpTree ( 236 ACPI_PARSE_OBJECT *Origin) 237 { 238 ACPI_OP_WALK_INFO Info; 239 240 241 if (!Origin) 242 { 243 return; 244 } 245 246 AcpiOsPrintf ("/*\nAML Parse Tree\n\n"); 247 Info.Flags = 0; 248 Info.Count = 0; 249 Info.Level = 0; 250 Info.WalkState = NULL; 251 252 AcpiDmWalkParseTree (Origin, AcpiDmDumpDescending, NULL, &Info); 253 AcpiOsPrintf ("*/\n\n"); 254 } 255 256 257 /******************************************************************************* 258 * 259 * FUNCTION: AcpiDmFindOrphanMethods 260 * 261 * PARAMETERS: Origin - Starting object 262 * 263 * RETURN: None 264 * 265 * DESCRIPTION: Parse tree walk to find "orphaned" method invocations -- methods 266 * that are not resolved in the namespace 267 * 268 ******************************************************************************/ 269 270 void 271 AcpiDmFindOrphanMethods ( 272 ACPI_PARSE_OBJECT *Origin) 273 { 274 ACPI_OP_WALK_INFO Info; 275 276 277 if (!Origin) 278 { 279 return; 280 } 281 282 Info.Flags = 0; 283 Info.Level = 0; 284 Info.WalkState = NULL; 285 286 AcpiDmWalkParseTree (Origin, AcpiDmFindOrphanDescending, NULL, &Info); 287 } 288 289 290 /******************************************************************************* 291 * 292 * FUNCTION: AcpiDmFinishNamespaceLoad 293 * 294 * PARAMETERS: ParseTreeRoot - Root of the parse tree 295 * NamespaceRoot - Root of the internal namespace 296 * OwnerId - OwnerId of the table to be disassembled 297 * 298 * RETURN: None 299 * 300 * DESCRIPTION: Load all namespace items that are created within control 301 * methods. Used before namespace cross reference 302 * 303 ******************************************************************************/ 304 305 void 306 AcpiDmFinishNamespaceLoad ( 307 ACPI_PARSE_OBJECT *ParseTreeRoot, 308 ACPI_NAMESPACE_NODE *NamespaceRoot, 309 ACPI_OWNER_ID OwnerId) 310 { 311 ACPI_STATUS Status; 312 ACPI_OP_WALK_INFO Info; 313 ACPI_WALK_STATE *WalkState; 314 315 316 if (!ParseTreeRoot) 317 { 318 return; 319 } 320 321 /* Create and initialize a new walk state */ 322 323 WalkState = AcpiDsCreateWalkState (OwnerId, ParseTreeRoot, NULL, NULL); 324 if (!WalkState) 325 { 326 return; 327 } 328 329 Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, 330 WalkState); 331 if (ACPI_FAILURE (Status)) 332 { 333 return; 334 } 335 336 Info.Flags = 0; 337 Info.Level = 0; 338 Info.WalkState = WalkState; 339 340 AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmLoadDescendingOp, 341 AcpiDmCommonAscendingOp, &Info); 342 ACPI_FREE (WalkState); 343 } 344 345 346 /******************************************************************************* 347 * 348 * FUNCTION: AcpiDmCrossReferenceNamespace 349 * 350 * PARAMETERS: ParseTreeRoot - Root of the parse tree 351 * NamespaceRoot - Root of the internal namespace 352 * OwnerId - OwnerId of the table to be disassembled 353 * 354 * RETURN: None 355 * 356 * DESCRIPTION: Cross reference the namespace to create externals 357 * 358 ******************************************************************************/ 359 360 void 361 AcpiDmCrossReferenceNamespace ( 362 ACPI_PARSE_OBJECT *ParseTreeRoot, 363 ACPI_NAMESPACE_NODE *NamespaceRoot, 364 ACPI_OWNER_ID OwnerId) 365 { 366 ACPI_STATUS Status; 367 ACPI_OP_WALK_INFO Info; 368 ACPI_WALK_STATE *WalkState; 369 370 371 if (!ParseTreeRoot) 372 { 373 return; 374 } 375 376 /* Create and initialize a new walk state */ 377 378 WalkState = AcpiDsCreateWalkState (OwnerId, ParseTreeRoot, NULL, NULL); 379 if (!WalkState) 380 { 381 return; 382 } 383 384 Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, 385 WalkState); 386 if (ACPI_FAILURE (Status)) 387 { 388 return; 389 } 390 391 Info.Flags = 0; 392 Info.Level = 0; 393 Info.WalkState = WalkState; 394 395 AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmXrefDescendingOp, 396 AcpiDmCommonAscendingOp, &Info); 397 ACPI_FREE (WalkState); 398 } 399 400 401 /******************************************************************************* 402 * 403 * FUNCTION: AcpiDmConvertParseObjects 404 * 405 * PARAMETERS: ParseTreeRoot - Root of the parse tree 406 * NamespaceRoot - Root of the internal namespace 407 * 408 * RETURN: None 409 * 410 * DESCRIPTION: Begin parse tree walk to perform conversions needed for 411 * disassembly. These include resource descriptors and switch/case 412 * operations. 413 * 414 ******************************************************************************/ 415 416 void 417 AcpiDmConvertParseObjects ( 418 ACPI_PARSE_OBJECT *ParseTreeRoot, 419 ACPI_NAMESPACE_NODE *NamespaceRoot) 420 { 421 ACPI_STATUS Status; 422 ACPI_OP_WALK_INFO Info; 423 ACPI_WALK_STATE *WalkState; 424 425 426 if (!ParseTreeRoot) 427 { 428 return; 429 } 430 431 /* Create and initialize a new walk state */ 432 433 WalkState = AcpiDsCreateWalkState (0, ParseTreeRoot, NULL, NULL); 434 if (!WalkState) 435 { 436 return; 437 } 438 439 Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, 440 WalkState); 441 if (ACPI_FAILURE (Status)) 442 { 443 ACPI_FREE (WalkState); 444 return; 445 } 446 447 Info.Flags = 0; 448 Info.Level = 0; 449 Info.WalkState = WalkState; 450 451 AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmCommonDescendingOp, 452 AcpiDmCommonAscendingOp, &Info); 453 ACPI_FREE (WalkState); 454 455 if (AcpiGbl_TempListHead) { 456 AcpiDmClearTempList(); 457 } 458 459 return; 460 } 461 462 463 /******************************************************************************* 464 * 465 * FUNCTION: AcpiDmDumpDescending 466 * 467 * PARAMETERS: ASL_WALK_CALLBACK 468 * 469 * RETURN: Status 470 * 471 * DESCRIPTION: Format and print contents of one parse Op. 472 * 473 ******************************************************************************/ 474 475 static ACPI_STATUS 476 AcpiDmDumpDescending ( 477 ACPI_PARSE_OBJECT *Op, 478 UINT32 Level, 479 void *Context) 480 { 481 ACPI_OP_WALK_INFO *Info = Context; 482 char *Path; 483 484 485 if (!Op) 486 { 487 return (AE_OK); 488 } 489 490 /* Most of the information (count, level, name) here */ 491 492 Info->Count++; 493 AcpiOsPrintf ("% 5d [%2.2d] ", Info->Count, Level); 494 AcpiDmIndent (Level); 495 AcpiOsPrintf ("%-28s", AcpiPsGetOpcodeName (Op->Common.AmlOpcode)); 496 497 /* Extra info is helpful */ 498 499 switch (Op->Common.AmlOpcode) 500 { 501 case AML_BYTE_OP: 502 503 AcpiOsPrintf ("%2.2X", (UINT32) Op->Common.Value.Integer); 504 break; 505 506 case AML_WORD_OP: 507 508 AcpiOsPrintf ("%4.4X", (UINT32) Op->Common.Value.Integer); 509 break; 510 511 case AML_DWORD_OP: 512 513 AcpiOsPrintf ("%8.8X", (UINT32) Op->Common.Value.Integer); 514 break; 515 516 case AML_QWORD_OP: 517 518 AcpiOsPrintf ("%8.8X%8.8X", ACPI_FORMAT_UINT64 (Op->Common.Value.Integer)); 519 break; 520 521 case AML_INT_NAMEPATH_OP: 522 523 if (Op->Common.Value.String) 524 { 525 AcpiNsExternalizeName (ACPI_UINT32_MAX, Op->Common.Value.String, 526 NULL, &Path); 527 AcpiOsPrintf ("%s %p", Path, Op->Common.Node); 528 ACPI_FREE (Path); 529 } 530 else 531 { 532 AcpiOsPrintf ("[NULL]"); 533 } 534 break; 535 536 case AML_NAME_OP: 537 case AML_METHOD_OP: 538 case AML_DEVICE_OP: 539 540 AcpiOsPrintf ("%4.4s", 541 ACPI_CAST_PTR (char, &Op->Named.Name)); 542 break; 543 544 case AML_INT_NAMEDFIELD_OP: 545 546 AcpiOsPrintf ("%4.4s Length: (bits) %8.8X%8.8X (bytes) %8.8X%8.8X", 547 ACPI_CAST_PTR (char, &Op->Named.Name), 548 ACPI_FORMAT_UINT64 (Op->Common.Value.Integer), 549 ACPI_FORMAT_UINT64 (Op->Common.Value.Integer / 8)); 550 break; 551 552 553 default: 554 555 break; 556 } 557 558 AcpiOsPrintf ("\n"); 559 return (AE_OK); 560 } 561 562 563 /******************************************************************************* 564 * 565 * FUNCTION: AcpiDmFindOrphanDescending 566 * 567 * PARAMETERS: ASL_WALK_CALLBACK 568 * 569 * RETURN: Status 570 * 571 * DESCRIPTION: Check namepath Ops for orphaned method invocations 572 * 573 * Note: Parts of this are experimental, under possible further development. 574 * 575 ******************************************************************************/ 576 577 static ACPI_STATUS 578 AcpiDmFindOrphanDescending ( 579 ACPI_PARSE_OBJECT *Op, 580 UINT32 Level, 581 void *Context) 582 { 583 const ACPI_OPCODE_INFO *OpInfo; 584 ACPI_PARSE_OBJECT *ChildOp; 585 ACPI_PARSE_OBJECT *NextOp; 586 ACPI_PARSE_OBJECT *ParentOp; 587 UINT32 ArgCount; 588 589 590 if (!Op) 591 { 592 return (AE_OK); 593 } 594 595 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 596 597 switch (Op->Common.AmlOpcode) 598 { 599 #ifdef ACPI_UNDER_DEVELOPMENT 600 case AML_ADD_OP: 601 602 ChildOp = Op->Common.Value.Arg; 603 if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && 604 !ChildOp->Common.Node) 605 { 606 AcpiNsExternalizeName (ACPI_UINT32_MAX, ChildOp->Common.Value.String, 607 NULL, &Path); 608 AcpiOsPrintf ("/* %-16s A-NAMEPATH: %s */\n", 609 Op->Common.AmlOpName, Path); 610 ACPI_FREE (Path); 611 612 NextOp = Op->Common.Next; 613 if (!NextOp) 614 { 615 /* This NamePath has no args, assume it is an integer */ 616 617 AcpiDmAddOpToExternalList (ChildOp, 618 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0); 619 return (AE_OK); 620 } 621 622 ArgCount = AcpiDmInspectPossibleArgs (3, 1, NextOp); 623 AcpiOsPrintf ("/* A-CHILDREN: %u Actual %u */\n", 624 ArgCount, AcpiDmCountChildren (Op)); 625 626 if (ArgCount < 1) 627 { 628 /* One Arg means this is just a Store(Name,Target) */ 629 630 AcpiDmAddOpToExternalList (ChildOp, 631 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0); 632 return (AE_OK); 633 } 634 635 AcpiDmAddOpToExternalList (ChildOp, 636 ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount, 0); 637 } 638 break; 639 640 #endif 641 642 case AML_STORE_OP: 643 644 ChildOp = Op->Common.Value.Arg; 645 if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && 646 !ChildOp->Common.Node) 647 { 648 NextOp = Op->Common.Next; 649 if (!NextOp) 650 { 651 /* This NamePath has no args, assume it is an integer */ 652 653 AcpiDmAddOpToExternalList (ChildOp, 654 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0); 655 return (AE_OK); 656 } 657 658 ArgCount = AcpiDmInspectPossibleArgs (2, 1, NextOp); 659 if (ArgCount <= 1) 660 { 661 /* One Arg means this is just a Store(Name,Target) */ 662 663 AcpiDmAddOpToExternalList (ChildOp, 664 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, ArgCount, 0); 665 return (AE_OK); 666 } 667 668 AcpiDmAddOpToExternalList (ChildOp, 669 ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount, 0); 670 } 671 break; 672 673 case AML_INT_NAMEPATH_OP: 674 675 /* Must examine parent to see if this namepath is an argument */ 676 677 ParentOp = Op->Common.Parent; 678 OpInfo = AcpiPsGetOpcodeInfo (ParentOp->Common.AmlOpcode); 679 680 if ((OpInfo->Class != AML_CLASS_EXECUTE) && 681 (OpInfo->Class != AML_CLASS_CREATE) && 682 (OpInfo->ObjectType != ACPI_TYPE_LOCAL_ALIAS) && 683 (ParentOp->Common.AmlOpcode != AML_INT_METHODCALL_OP) && 684 !Op->Common.Node) 685 { 686 ArgCount = AcpiDmInspectPossibleArgs (0, 0, Op); 687 688 /* 689 * Check if namepath is a predicate for if/while or lone parameter to 690 * a return. 691 */ 692 if (ArgCount == 0) 693 { 694 if (((ParentOp->Common.AmlOpcode == AML_IF_OP) || 695 (ParentOp->Common.AmlOpcode == AML_WHILE_OP) || 696 (ParentOp->Common.AmlOpcode == AML_RETURN_OP)) && 697 698 /* And namepath is the first argument */ 699 (ParentOp->Common.Value.Arg == Op)) 700 { 701 AcpiDmAddOpToExternalList (Op, 702 Op->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0); 703 break; 704 } 705 } 706 707 /* 708 * This is a standalone namestring (not a parameter to another 709 * operator) - it *must* be a method invocation, nothing else is 710 * grammatically possible. 711 */ 712 AcpiDmAddOpToExternalList (Op, 713 Op->Common.Value.String, ACPI_TYPE_METHOD, ArgCount, 0); 714 } 715 break; 716 717 default: 718 719 break; 720 } 721 722 return (AE_OK); 723 } 724 725 726 /******************************************************************************* 727 * 728 * FUNCTION: AcpiDmLoadDescendingOp 729 * 730 * PARAMETERS: ASL_WALK_CALLBACK 731 * 732 * RETURN: Status 733 * 734 * DESCRIPTION: Descending handler for namespace control method object load 735 * 736 ******************************************************************************/ 737 738 static ACPI_STATUS 739 AcpiDmLoadDescendingOp ( 740 ACPI_PARSE_OBJECT *Op, 741 UINT32 Level, 742 void *Context) 743 { 744 ACPI_OP_WALK_INFO *Info = Context; 745 const ACPI_OPCODE_INFO *OpInfo; 746 ACPI_WALK_STATE *WalkState; 747 ACPI_OBJECT_TYPE ObjectType; 748 ACPI_STATUS Status; 749 char *Path = NULL; 750 ACPI_PARSE_OBJECT *NextOp; 751 ACPI_NAMESPACE_NODE *Node; 752 char FieldPath[5]; 753 BOOLEAN PreDefined = FALSE; 754 UINT8 PreDefineIndex = 0; 755 756 757 WalkState = Info->WalkState; 758 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 759 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 760 761 /* Only interested in operators that create new names */ 762 763 if (!(OpInfo->Flags & AML_NAMED) && 764 !(OpInfo->Flags & AML_CREATE)) 765 { 766 goto Exit; 767 } 768 769 /* Get the NamePath from the appropriate place */ 770 771 if (OpInfo->Flags & AML_NAMED) 772 { 773 /* For all named operators, get the new name */ 774 775 Path = Op->Named.Path; 776 777 if (!Path && Op->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP) 778 { 779 *ACPI_CAST_PTR (UINT32, &FieldPath[0]) = Op->Named.Name; 780 FieldPath[4] = 0; 781 Path = FieldPath; 782 } 783 } 784 else if (OpInfo->Flags & AML_CREATE) 785 { 786 /* New name is the last child */ 787 788 NextOp = Op->Common.Value.Arg; 789 790 while (NextOp->Common.Next) 791 { 792 NextOp = NextOp->Common.Next; 793 } 794 795 Path = NextOp->Common.Value.String; 796 } 797 798 if (!Path) 799 { 800 goto Exit; 801 } 802 803 /* Insert the name into the namespace */ 804 805 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 806 ACPI_IMODE_LOAD_PASS2, ACPI_NS_DONT_OPEN_SCOPE, 807 WalkState, &Node); 808 809 Op->Common.Node = Node; 810 811 if (ACPI_SUCCESS (Status)) 812 { 813 /* Check if it's a predefined node */ 814 815 while (AcpiGbl_PreDefinedNames[PreDefineIndex].Name) 816 { 817 if (ACPI_COMPARE_NAME (Node->Name.Ascii, 818 AcpiGbl_PreDefinedNames[PreDefineIndex].Name)) 819 { 820 PreDefined = TRUE; 821 break; 822 } 823 824 PreDefineIndex++; 825 } 826 827 /* 828 * Set node owner id if it satisfies all the following conditions: 829 * 1) Not a predefined node, _SB_ etc 830 * 2) Not the root node 831 * 3) Not a node created by Scope 832 */ 833 834 if (!PreDefined && Node != AcpiGbl_RootNode && 835 Op->Common.AmlOpcode != AML_SCOPE_OP) 836 { 837 Node->OwnerId = WalkState->OwnerId; 838 } 839 } 840 841 842 Exit: 843 844 if (AcpiNsOpensScope (ObjectType)) 845 { 846 if (Op->Common.Node) 847 { 848 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, 849 WalkState); 850 if (ACPI_FAILURE (Status)) 851 { 852 return (Status); 853 } 854 } 855 } 856 857 return (AE_OK); 858 } 859 860 861 /******************************************************************************* 862 * 863 * FUNCTION: AcpiDmXrefDescendingOp 864 * 865 * PARAMETERS: ASL_WALK_CALLBACK 866 * 867 * RETURN: Status 868 * 869 * DESCRIPTION: Descending handler for namespace cross reference 870 * 871 ******************************************************************************/ 872 873 static ACPI_STATUS 874 AcpiDmXrefDescendingOp ( 875 ACPI_PARSE_OBJECT *Op, 876 UINT32 Level, 877 void *Context) 878 { 879 ACPI_OP_WALK_INFO *Info = Context; 880 const ACPI_OPCODE_INFO *OpInfo; 881 ACPI_WALK_STATE *WalkState; 882 ACPI_OBJECT_TYPE ObjectType; 883 ACPI_OBJECT_TYPE ObjectType2; 884 ACPI_STATUS Status; 885 char *Path = NULL; 886 ACPI_PARSE_OBJECT *NextOp; 887 ACPI_NAMESPACE_NODE *Node; 888 ACPI_OPERAND_OBJECT *Object; 889 UINT32 ParamCount = 0; 890 char *Pathname; 891 UINT16 Flags = 0; 892 893 894 WalkState = Info->WalkState; 895 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 896 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 897 898 if ((!(OpInfo->Flags & AML_NAMED)) && 899 (!(OpInfo->Flags & AML_CREATE)) && 900 (Op->Common.AmlOpcode != AML_INT_NAMEPATH_OP) && 901 (Op->Common.AmlOpcode != AML_NOTIFY_OP)) 902 { 903 goto Exit; 904 } 905 906 /* Get the NamePath from the appropriate place */ 907 908 if (OpInfo->Flags & AML_NAMED) 909 { 910 /* 911 * Only these two operators (Alias, Scope) refer to an existing 912 * name, it is the first argument 913 */ 914 if (Op->Common.AmlOpcode == AML_ALIAS_OP) 915 { 916 ObjectType = ACPI_TYPE_ANY; 917 918 NextOp = Op->Common.Value.Arg; 919 NextOp = NextOp->Common.Value.Arg; 920 if (NextOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) 921 { 922 Path = NextOp->Common.Value.String; 923 } 924 } 925 else if (Op->Common.AmlOpcode == AML_SCOPE_OP || 926 Op->Common.AmlOpcode == AML_EXTERNAL_OP) 927 { 928 Path = Op->Named.Path; 929 } 930 } 931 else if (OpInfo->Flags & AML_CREATE) 932 { 933 /* Referenced Buffer Name is the first child */ 934 935 ObjectType = ACPI_TYPE_BUFFER; /* Change from TYPE_BUFFER_FIELD */ 936 937 NextOp = Op->Common.Value.Arg; 938 if (NextOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) 939 { 940 Path = NextOp->Common.Value.String; 941 } 942 } 943 else if (Op->Common.AmlOpcode == AML_NOTIFY_OP) 944 { 945 Path = Op->Common.Value.Arg->Asl.Value.String; 946 } 947 else 948 { 949 Path = Op->Common.Value.String; 950 } 951 952 if (!Path) 953 { 954 goto Exit; 955 } 956 957 /* 958 * Lookup the name in the namespace. Name must exist at this point, or it 959 * is an invalid reference. 960 * 961 * The namespace is also used as a lookup table for references to resource 962 * descriptors and the fields within them. 963 */ 964 Node = NULL; 965 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, 966 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, 967 WalkState, &Node); 968 969 if (ACPI_SUCCESS (Status) && (Node->Flags & ANOBJ_IS_EXTERNAL)) 970 { 971 /* Node was created by an External() statement */ 972 973 Status = AE_NOT_FOUND; 974 } 975 976 if (ACPI_FAILURE (Status)) 977 { 978 if (Status == AE_NOT_FOUND) 979 { 980 /* 981 * Add this symbol as an external declaration, except if the 982 * parent is a CondRefOf operator. For this operator, we do not 983 * need an external, nor do we want one, since this can cause 984 * disassembly problems if the symbol is actually a control 985 * method. 986 */ 987 if (!(Op->Asl.Parent && 988 (Op->Asl.Parent->Asl.AmlOpcode == AML_CONDITIONAL_REF_OF_OP))) 989 { 990 if (Node) 991 { 992 AcpiDmAddNodeToExternalList (Node, 993 (UINT8) ObjectType, 7, Flags); 994 } 995 else 996 { 997 AcpiDmAddOpToExternalList (Op, Path, 998 (UINT8) ObjectType, 7, Flags); 999 } 1000 } 1001 } 1002 } 1003 1004 /* 1005 * Found the node, but check if it came from an external table. 1006 * Add it to external list. Note: Node->OwnerId == 0 indicates 1007 * one of the built-in ACPI Names (_OS_ etc.) which can safely 1008 * be ignored. 1009 */ 1010 else if (Node->OwnerId && 1011 (WalkState->OwnerId != Node->OwnerId)) 1012 { 1013 ObjectType2 = ObjectType; 1014 1015 Object = AcpiNsGetAttachedObject (Node); 1016 if (Object) 1017 { 1018 ObjectType2 = Object->Common.Type; 1019 if (ObjectType2 == ACPI_TYPE_METHOD) 1020 { 1021 ParamCount = Object->Method.ParamCount; 1022 } 1023 } 1024 1025 Pathname = AcpiNsGetExternalPathname (Node); 1026 if (!Pathname) 1027 { 1028 return (AE_NO_MEMORY); 1029 } 1030 1031 AcpiDmAddNodeToExternalList (Node, (UINT8) ObjectType2, 1032 ParamCount, ACPI_EXT_RESOLVED_REFERENCE); 1033 1034 ACPI_FREE (Pathname); 1035 Op->Common.Node = Node; 1036 } 1037 else 1038 { 1039 Op->Common.Node = Node; 1040 } 1041 1042 1043 Exit: 1044 /* Open new scope if necessary */ 1045 1046 if (AcpiNsOpensScope (ObjectType)) 1047 { 1048 if (Op->Common.Node) 1049 { 1050 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, 1051 WalkState); 1052 if (ACPI_FAILURE (Status)) 1053 { 1054 return (Status); 1055 } 1056 } 1057 } 1058 1059 return (AE_OK); 1060 } 1061 1062 /******************************************************************************* 1063 * 1064 * FUNCTION: AcpiDmCommonDescendingOp 1065 * 1066 * PARAMETERS: ASL_WALK_CALLBACK 1067 * 1068 * RETURN: ACPI_STATUS 1069 * 1070 * DESCRIPTION: Perform parse tree preprocessing before main disassembly walk. 1071 * 1072 ******************************************************************************/ 1073 1074 static ACPI_STATUS 1075 AcpiDmCommonDescendingOp ( 1076 ACPI_PARSE_OBJECT *Op, 1077 UINT32 Level, 1078 void *Context) 1079 { 1080 ACPI_STATUS Status; 1081 1082 1083 /* Resource descriptor conversion */ 1084 1085 Status = AcpiDmProcessResourceDescriptors (Op, Level, Context); 1086 if (ACPI_FAILURE (Status)) 1087 { 1088 return (Status); 1089 } 1090 1091 /* Switch/Case conversion */ 1092 1093 Status = AcpiDmProcessSwitch (Op); 1094 return (AE_OK); 1095 } 1096 1097 1098 /******************************************************************************* 1099 * 1100 * FUNCTION: AcpiDmProcessResourceDescriptors 1101 * 1102 * PARAMETERS: ASL_WALK_CALLBACK 1103 * 1104 * RETURN: ACPI_STATUS 1105 * 1106 * DESCRIPTION: Convert fixed-offset references to resource descriptors to 1107 * symbolic references. Should only be called after namespace has 1108 * been cross referenced. 1109 * 1110 ******************************************************************************/ 1111 1112 static ACPI_STATUS 1113 AcpiDmProcessResourceDescriptors ( 1114 ACPI_PARSE_OBJECT *Op, 1115 UINT32 Level, 1116 void *Context) 1117 { 1118 ACPI_OP_WALK_INFO *Info = Context; 1119 const ACPI_OPCODE_INFO *OpInfo; 1120 ACPI_WALK_STATE *WalkState; 1121 ACPI_OBJECT_TYPE ObjectType; 1122 ACPI_STATUS Status; 1123 1124 1125 WalkState = Info->WalkState; 1126 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 1127 1128 /* Open new scope if necessary */ 1129 1130 ObjectType = OpInfo->ObjectType; 1131 if (AcpiNsOpensScope (ObjectType)) 1132 { 1133 if (Op->Common.Node) 1134 { 1135 1136 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, 1137 WalkState); 1138 if (ACPI_FAILURE (Status)) 1139 { 1140 return (Status); 1141 } 1142 } 1143 } 1144 1145 /* 1146 * Check if this operator contains a reference to a resource descriptor. 1147 * If so, convert the reference into a symbolic reference. 1148 */ 1149 AcpiDmCheckResourceReference (Op, WalkState); 1150 return (AE_OK); 1151 } 1152 1153 /******************************************************************************* 1154 * 1155 * FUNCTION: AcpiDmCommonAscendingOp 1156 * 1157 * PARAMETERS: ASL_WALK_CALLBACK 1158 * 1159 * RETURN: None 1160 * 1161 * DESCRIPTION: Ascending handler for combined parse/namespace walks. Closes 1162 * scope if necessary. 1163 * 1164 ******************************************************************************/ 1165 1166 static ACPI_STATUS 1167 AcpiDmCommonAscendingOp ( 1168 ACPI_PARSE_OBJECT *Op, 1169 UINT32 Level, 1170 void *Context) 1171 { 1172 ACPI_OP_WALK_INFO *Info = Context; 1173 ACPI_OBJECT_TYPE ObjectType; 1174 1175 1176 /* Close scope if necessary */ 1177 1178 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 1179 1180 if (AcpiNsOpensScope (ObjectType)) 1181 { 1182 (void) AcpiDsScopeStackPop (Info->WalkState); 1183 } 1184 1185 return (AE_OK); 1186 } 1187 1188 /******************************************************************************* 1189 * 1190 * FUNCTION: AcpiDmInspectPossibleArgs 1191 * 1192 * PARAMETERS: CurrentOpArgCount - Which arg of the current op was the 1193 * possible method invocation found 1194 * TargetCount - Number of targets (0,1,2) for this op 1195 * Op - Parse op 1196 * 1197 * RETURN: Status 1198 * 1199 * DESCRIPTION: Examine following args and next ops for possible arguments 1200 * for an unrecognized method invocation. 1201 * 1202 ******************************************************************************/ 1203 1204 static UINT32 1205 AcpiDmInspectPossibleArgs ( 1206 UINT32 CurrentOpArgCount, 1207 UINT32 TargetCount, 1208 ACPI_PARSE_OBJECT *Op) 1209 { 1210 const ACPI_OPCODE_INFO *OpInfo; 1211 UINT32 i; 1212 UINT32 ArgumentCount = 0; 1213 ACPI_PARSE_OBJECT *NextOp; 1214 ACPI_PARSE_OBJECT *ExecuteOp; 1215 1216 1217 if (!Op) 1218 { 1219 return (0); 1220 } 1221 1222 /* Lookahead for the maximum number of possible arguments */ 1223 1224 NextOp = Op->Common.Next; 1225 1226 for (i = 0; (i < ACPI_METHOD_NUM_ARGS) && NextOp; i++) 1227 { 1228 OpInfo = AcpiPsGetOpcodeInfo (NextOp->Common.AmlOpcode); 1229 1230 /* Any one of these operators is "very probably" not a method arg */ 1231 1232 if ((NextOp->Common.AmlOpcode == AML_STORE_OP) || 1233 (NextOp->Common.AmlOpcode == AML_NOTIFY_OP) || 1234 (OpInfo->Class == AML_CLASS_CONTROL) || 1235 (OpInfo->Class == AML_CLASS_CREATE) || 1236 (OpInfo->Class == AML_CLASS_NAMED_OBJECT)) 1237 { 1238 break; 1239 } 1240 1241 if (OpInfo->Class == AML_CLASS_EXECUTE) 1242 { 1243 /* Probable that this is method arg if there is no target */ 1244 1245 ExecuteOp = NextOp->Common.Value.Arg; 1246 while (ExecuteOp) 1247 { 1248 if ((ExecuteOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && 1249 (ExecuteOp->Common.Value.Arg == NULL)) 1250 { 1251 /* No target, could be a method arg */ 1252 1253 break; 1254 } 1255 1256 if (NextOp->Common.AmlOpcode == AML_REF_OF_OP) 1257 { 1258 break; 1259 } 1260 1261 ExecuteOp = ExecuteOp->Common.Next; 1262 } 1263 1264 if (!ExecuteOp) 1265 { 1266 /* Has a target, not method arg */ 1267 1268 return (ArgumentCount); 1269 } 1270 } 1271 1272 ArgumentCount++; 1273 NextOp = NextOp->Common.Next; 1274 } 1275 1276 return (ArgumentCount); 1277 } 1278