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 - 2017, 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 <contrib/dev/acpica/include/acpi.h> 153 #include <contrib/dev/acpica/include/accommon.h> 154 #include <contrib/dev/acpica/include/acparser.h> 155 #include <contrib/dev/acpica/include/amlcode.h> 156 #include <contrib/dev/acpica/include/acdisasm.h> 157 #include <contrib/dev/acpica/include/acdispat.h> 158 #include <contrib/dev/acpica/include/acnamesp.h> 159 #include <contrib/dev/acpica/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 case AML_INT_NAMEDFIELD_OP: 540 541 AcpiOsPrintf ("%4.4s", ACPI_CAST_PTR (char, &Op->Named.Name)); 542 break; 543 544 default: 545 546 break; 547 } 548 549 AcpiOsPrintf ("\n"); 550 return (AE_OK); 551 } 552 553 554 /******************************************************************************* 555 * 556 * FUNCTION: AcpiDmFindOrphanDescending 557 * 558 * PARAMETERS: ASL_WALK_CALLBACK 559 * 560 * RETURN: Status 561 * 562 * DESCRIPTION: Check namepath Ops for orphaned method invocations 563 * 564 * Note: Parts of this are experimental, under possible further development. 565 * 566 ******************************************************************************/ 567 568 static ACPI_STATUS 569 AcpiDmFindOrphanDescending ( 570 ACPI_PARSE_OBJECT *Op, 571 UINT32 Level, 572 void *Context) 573 { 574 const ACPI_OPCODE_INFO *OpInfo; 575 ACPI_PARSE_OBJECT *ChildOp; 576 ACPI_PARSE_OBJECT *NextOp; 577 ACPI_PARSE_OBJECT *ParentOp; 578 UINT32 ArgCount; 579 580 581 if (!Op) 582 { 583 return (AE_OK); 584 } 585 586 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 587 588 switch (Op->Common.AmlOpcode) 589 { 590 #ifdef ACPI_UNDER_DEVELOPMENT 591 case AML_ADD_OP: 592 593 ChildOp = Op->Common.Value.Arg; 594 if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && 595 !ChildOp->Common.Node) 596 { 597 AcpiNsExternalizeName (ACPI_UINT32_MAX, ChildOp->Common.Value.String, 598 NULL, &Path); 599 AcpiOsPrintf ("/* %-16s A-NAMEPATH: %s */\n", 600 Op->Common.AmlOpName, Path); 601 ACPI_FREE (Path); 602 603 NextOp = Op->Common.Next; 604 if (!NextOp) 605 { 606 /* This NamePath has no args, assume it is an integer */ 607 608 AcpiDmAddOpToExternalList (ChildOp, 609 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0); 610 return (AE_OK); 611 } 612 613 ArgCount = AcpiDmInspectPossibleArgs (3, 1, NextOp); 614 AcpiOsPrintf ("/* A-CHILDREN: %u Actual %u */\n", 615 ArgCount, AcpiDmCountChildren (Op)); 616 617 if (ArgCount < 1) 618 { 619 /* One Arg means this is just a Store(Name,Target) */ 620 621 AcpiDmAddOpToExternalList (ChildOp, 622 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0); 623 return (AE_OK); 624 } 625 626 AcpiDmAddOpToExternalList (ChildOp, 627 ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount, 0); 628 } 629 break; 630 631 #endif 632 633 case AML_STORE_OP: 634 635 ChildOp = Op->Common.Value.Arg; 636 if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && 637 !ChildOp->Common.Node) 638 { 639 NextOp = Op->Common.Next; 640 if (!NextOp) 641 { 642 /* This NamePath has no args, assume it is an integer */ 643 644 AcpiDmAddOpToExternalList (ChildOp, 645 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0); 646 return (AE_OK); 647 } 648 649 ArgCount = AcpiDmInspectPossibleArgs (2, 1, NextOp); 650 if (ArgCount <= 1) 651 { 652 /* One Arg means this is just a Store(Name,Target) */ 653 654 AcpiDmAddOpToExternalList (ChildOp, 655 ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, ArgCount, 0); 656 return (AE_OK); 657 } 658 659 AcpiDmAddOpToExternalList (ChildOp, 660 ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount, 0); 661 } 662 break; 663 664 case AML_INT_NAMEPATH_OP: 665 666 /* Must examine parent to see if this namepath is an argument */ 667 668 ParentOp = Op->Common.Parent; 669 OpInfo = AcpiPsGetOpcodeInfo (ParentOp->Common.AmlOpcode); 670 671 if ((OpInfo->Class != AML_CLASS_EXECUTE) && 672 (OpInfo->Class != AML_CLASS_CREATE) && 673 (OpInfo->ObjectType != ACPI_TYPE_LOCAL_ALIAS) && 674 (ParentOp->Common.AmlOpcode != AML_INT_METHODCALL_OP) && 675 !Op->Common.Node) 676 { 677 ArgCount = AcpiDmInspectPossibleArgs (0, 0, Op); 678 679 /* 680 * Check if namepath is a predicate for if/while or lone parameter to 681 * a return. 682 */ 683 if (ArgCount == 0) 684 { 685 if (((ParentOp->Common.AmlOpcode == AML_IF_OP) || 686 (ParentOp->Common.AmlOpcode == AML_WHILE_OP) || 687 (ParentOp->Common.AmlOpcode == AML_RETURN_OP)) && 688 689 /* And namepath is the first argument */ 690 (ParentOp->Common.Value.Arg == Op)) 691 { 692 AcpiDmAddOpToExternalList (Op, 693 Op->Common.Value.String, ACPI_TYPE_INTEGER, 0, 0); 694 break; 695 } 696 } 697 698 /* 699 * This is a standalone namestring (not a parameter to another 700 * operator) - it *must* be a method invocation, nothing else is 701 * grammatically possible. 702 */ 703 AcpiDmAddOpToExternalList (Op, 704 Op->Common.Value.String, ACPI_TYPE_METHOD, ArgCount, 0); 705 } 706 break; 707 708 default: 709 710 break; 711 } 712 713 return (AE_OK); 714 } 715 716 717 /******************************************************************************* 718 * 719 * FUNCTION: AcpiDmLoadDescendingOp 720 * 721 * PARAMETERS: ASL_WALK_CALLBACK 722 * 723 * RETURN: Status 724 * 725 * DESCRIPTION: Descending handler for namespace control method object load 726 * 727 ******************************************************************************/ 728 729 static ACPI_STATUS 730 AcpiDmLoadDescendingOp ( 731 ACPI_PARSE_OBJECT *Op, 732 UINT32 Level, 733 void *Context) 734 { 735 ACPI_OP_WALK_INFO *Info = Context; 736 const ACPI_OPCODE_INFO *OpInfo; 737 ACPI_WALK_STATE *WalkState; 738 ACPI_OBJECT_TYPE ObjectType; 739 ACPI_STATUS Status; 740 char *Path = NULL; 741 ACPI_PARSE_OBJECT *NextOp; 742 ACPI_NAMESPACE_NODE *Node; 743 char FieldPath[5]; 744 BOOLEAN PreDefined = FALSE; 745 UINT8 PreDefineIndex = 0; 746 747 748 WalkState = Info->WalkState; 749 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 750 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 751 752 /* Only interested in operators that create new names */ 753 754 if (!(OpInfo->Flags & AML_NAMED) && 755 !(OpInfo->Flags & AML_CREATE)) 756 { 757 goto Exit; 758 } 759 760 /* Get the NamePath from the appropriate place */ 761 762 if (OpInfo->Flags & AML_NAMED) 763 { 764 /* For all named operators, get the new name */ 765 766 Path = Op->Named.Path; 767 768 if (!Path && Op->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP) 769 { 770 *ACPI_CAST_PTR (UINT32, &FieldPath[0]) = Op->Named.Name; 771 FieldPath[4] = 0; 772 Path = FieldPath; 773 } 774 } 775 else if (OpInfo->Flags & AML_CREATE) 776 { 777 /* New name is the last child */ 778 779 NextOp = Op->Common.Value.Arg; 780 781 while (NextOp->Common.Next) 782 { 783 NextOp = NextOp->Common.Next; 784 } 785 786 Path = NextOp->Common.Value.String; 787 } 788 789 if (!Path) 790 { 791 goto Exit; 792 } 793 794 /* Insert the name into the namespace */ 795 796 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, 797 ACPI_IMODE_LOAD_PASS2, ACPI_NS_DONT_OPEN_SCOPE, 798 WalkState, &Node); 799 800 Op->Common.Node = Node; 801 802 if (ACPI_SUCCESS (Status)) 803 { 804 /* Check if it's a predefined node */ 805 806 while (AcpiGbl_PreDefinedNames[PreDefineIndex].Name) 807 { 808 if (ACPI_COMPARE_NAME (Node->Name.Ascii, 809 AcpiGbl_PreDefinedNames[PreDefineIndex].Name)) 810 { 811 PreDefined = TRUE; 812 break; 813 } 814 815 PreDefineIndex++; 816 } 817 818 /* 819 * Set node owner id if it satisfies all the following conditions: 820 * 1) Not a predefined node, _SB_ etc 821 * 2) Not the root node 822 * 3) Not a node created by Scope 823 */ 824 825 if (!PreDefined && Node != AcpiGbl_RootNode && 826 Op->Common.AmlOpcode != AML_SCOPE_OP) 827 { 828 Node->OwnerId = WalkState->OwnerId; 829 } 830 } 831 832 833 Exit: 834 835 if (AcpiNsOpensScope (ObjectType)) 836 { 837 if (Op->Common.Node) 838 { 839 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, 840 WalkState); 841 if (ACPI_FAILURE (Status)) 842 { 843 return (Status); 844 } 845 } 846 } 847 848 return (AE_OK); 849 } 850 851 852 /******************************************************************************* 853 * 854 * FUNCTION: AcpiDmXrefDescendingOp 855 * 856 * PARAMETERS: ASL_WALK_CALLBACK 857 * 858 * RETURN: Status 859 * 860 * DESCRIPTION: Descending handler for namespace cross reference 861 * 862 ******************************************************************************/ 863 864 static ACPI_STATUS 865 AcpiDmXrefDescendingOp ( 866 ACPI_PARSE_OBJECT *Op, 867 UINT32 Level, 868 void *Context) 869 { 870 ACPI_OP_WALK_INFO *Info = Context; 871 const ACPI_OPCODE_INFO *OpInfo; 872 ACPI_WALK_STATE *WalkState; 873 ACPI_OBJECT_TYPE ObjectType; 874 ACPI_OBJECT_TYPE ObjectType2; 875 ACPI_STATUS Status; 876 char *Path = NULL; 877 ACPI_PARSE_OBJECT *NextOp; 878 ACPI_NAMESPACE_NODE *Node; 879 ACPI_OPERAND_OBJECT *Object; 880 UINT32 ParamCount = 0; 881 char *Pathname; 882 UINT16 Flags = 0; 883 884 885 WalkState = Info->WalkState; 886 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 887 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 888 889 if ((!(OpInfo->Flags & AML_NAMED)) && 890 (!(OpInfo->Flags & AML_CREATE)) && 891 (Op->Common.AmlOpcode != AML_INT_NAMEPATH_OP) && 892 (Op->Common.AmlOpcode != AML_NOTIFY_OP)) 893 { 894 goto Exit; 895 } 896 897 /* Get the NamePath from the appropriate place */ 898 899 if (OpInfo->Flags & AML_NAMED) 900 { 901 /* 902 * Only these two operators (Alias, Scope) refer to an existing 903 * name, it is the first argument 904 */ 905 if (Op->Common.AmlOpcode == AML_ALIAS_OP) 906 { 907 ObjectType = ACPI_TYPE_ANY; 908 909 NextOp = Op->Common.Value.Arg; 910 NextOp = NextOp->Common.Value.Arg; 911 if (NextOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) 912 { 913 Path = NextOp->Common.Value.String; 914 } 915 } 916 else if (Op->Common.AmlOpcode == AML_SCOPE_OP || 917 Op->Common.AmlOpcode == AML_EXTERNAL_OP) 918 { 919 Path = Op->Named.Path; 920 } 921 } 922 else if (OpInfo->Flags & AML_CREATE) 923 { 924 /* Referenced Buffer Name is the first child */ 925 926 ObjectType = ACPI_TYPE_BUFFER; /* Change from TYPE_BUFFER_FIELD */ 927 928 NextOp = Op->Common.Value.Arg; 929 if (NextOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) 930 { 931 Path = NextOp->Common.Value.String; 932 } 933 } 934 else if (Op->Common.AmlOpcode == AML_NOTIFY_OP) 935 { 936 Path = Op->Common.Value.Arg->Asl.Value.String; 937 } 938 else 939 { 940 Path = Op->Common.Value.String; 941 } 942 943 if (!Path) 944 { 945 goto Exit; 946 } 947 948 /* 949 * Lookup the name in the namespace. Name must exist at this point, or it 950 * is an invalid reference. 951 * 952 * The namespace is also used as a lookup table for references to resource 953 * descriptors and the fields within them. 954 */ 955 Node = NULL; 956 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, 957 ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, 958 WalkState, &Node); 959 960 if (ACPI_SUCCESS (Status) && (Node->Flags & ANOBJ_IS_EXTERNAL)) 961 { 962 /* Node was created by an External() statement */ 963 964 Status = AE_NOT_FOUND; 965 } 966 967 if (ACPI_FAILURE (Status)) 968 { 969 if (Status == AE_NOT_FOUND) 970 { 971 /* 972 * Add this symbol as an external declaration, except if the 973 * parent is a CondRefOf operator. For this operator, we do not 974 * need an external, nor do we want one, since this can cause 975 * disassembly problems if the symbol is actually a control 976 * method. 977 */ 978 if (!(Op->Asl.Parent && 979 (Op->Asl.Parent->Asl.AmlOpcode == AML_CONDITIONAL_REF_OF_OP))) 980 { 981 if (Node) 982 { 983 AcpiDmAddNodeToExternalList (Node, 984 (UINT8) ObjectType, 7, Flags); 985 } 986 else 987 { 988 AcpiDmAddOpToExternalList (Op, Path, 989 (UINT8) ObjectType, 7, Flags); 990 } 991 } 992 } 993 } 994 995 /* 996 * Found the node, but check if it came from an external table. 997 * Add it to external list. Note: Node->OwnerId == 0 indicates 998 * one of the built-in ACPI Names (_OS_ etc.) which can safely 999 * be ignored. 1000 */ 1001 else if (Node->OwnerId && 1002 (WalkState->OwnerId != Node->OwnerId)) 1003 { 1004 ObjectType2 = ObjectType; 1005 1006 Object = AcpiNsGetAttachedObject (Node); 1007 if (Object) 1008 { 1009 ObjectType2 = Object->Common.Type; 1010 if (ObjectType2 == ACPI_TYPE_METHOD) 1011 { 1012 ParamCount = Object->Method.ParamCount; 1013 } 1014 } 1015 1016 Pathname = AcpiNsGetExternalPathname (Node); 1017 if (!Pathname) 1018 { 1019 return (AE_NO_MEMORY); 1020 } 1021 1022 AcpiDmAddNodeToExternalList (Node, (UINT8) ObjectType2, 1023 ParamCount, ACPI_EXT_RESOLVED_REFERENCE); 1024 1025 ACPI_FREE (Pathname); 1026 Op->Common.Node = Node; 1027 } 1028 else 1029 { 1030 Op->Common.Node = Node; 1031 } 1032 1033 1034 Exit: 1035 /* Open new scope if necessary */ 1036 1037 if (AcpiNsOpensScope (ObjectType)) 1038 { 1039 if (Op->Common.Node) 1040 { 1041 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, 1042 WalkState); 1043 if (ACPI_FAILURE (Status)) 1044 { 1045 return (Status); 1046 } 1047 } 1048 } 1049 1050 return (AE_OK); 1051 } 1052 1053 /******************************************************************************* 1054 * 1055 * FUNCTION: AcpiDmCommonDescendingOp 1056 * 1057 * PARAMETERS: ASL_WALK_CALLBACK 1058 * 1059 * RETURN: ACPI_STATUS 1060 * 1061 * DESCRIPTION: Perform parse tree preprocessing before main disassembly walk. 1062 * 1063 ******************************************************************************/ 1064 1065 static ACPI_STATUS 1066 AcpiDmCommonDescendingOp ( 1067 ACPI_PARSE_OBJECT *Op, 1068 UINT32 Level, 1069 void *Context) 1070 { 1071 ACPI_STATUS Status; 1072 1073 /* Resource descriptor conversion */ 1074 1075 Status = AcpiDmProcessResourceDescriptors (Op, Level, Context); 1076 1077 if (ACPI_FAILURE (Status)) 1078 { 1079 return (Status); 1080 } 1081 1082 /* Switch/Case conversion */ 1083 1084 Status = AcpiDmProcessSwitch (Op); 1085 1086 return (AE_OK); 1087 } 1088 1089 1090 /******************************************************************************* 1091 * 1092 * FUNCTION: AcpiDmProcessResourceDescriptors 1093 * 1094 * PARAMETERS: ASL_WALK_CALLBACK 1095 * 1096 * RETURN: ACPI_STATUS 1097 * 1098 * DESCRIPTION: Convert fixed-offset references to resource descriptors to 1099 * symbolic references. Should only be called after namespace has 1100 * been cross referenced. 1101 * 1102 ******************************************************************************/ 1103 1104 static ACPI_STATUS 1105 AcpiDmProcessResourceDescriptors ( 1106 ACPI_PARSE_OBJECT *Op, 1107 UINT32 Level, 1108 void *Context) 1109 { 1110 ACPI_OP_WALK_INFO *Info = Context; 1111 const ACPI_OPCODE_INFO *OpInfo; 1112 ACPI_WALK_STATE *WalkState; 1113 ACPI_OBJECT_TYPE ObjectType; 1114 ACPI_STATUS Status; 1115 1116 WalkState = Info->WalkState; 1117 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 1118 1119 /* Open new scope if necessary */ 1120 1121 ObjectType = OpInfo->ObjectType; 1122 if (AcpiNsOpensScope (ObjectType)) 1123 { 1124 if (Op->Common.Node) 1125 { 1126 1127 Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, 1128 WalkState); 1129 if (ACPI_FAILURE (Status)) 1130 { 1131 return (Status); 1132 } 1133 } 1134 } 1135 1136 /* 1137 * Check if this operator contains a reference to a resource descriptor. 1138 * If so, convert the reference into a symbolic reference. 1139 */ 1140 AcpiDmCheckResourceReference (Op, WalkState); 1141 1142 return (AE_OK); 1143 } 1144 1145 /******************************************************************************* 1146 * 1147 * FUNCTION: AcpiDmCommonAscendingOp 1148 * 1149 * PARAMETERS: ASL_WALK_CALLBACK 1150 * 1151 * RETURN: None 1152 * 1153 * DESCRIPTION: Ascending handler for combined parse/namespace walks. Closes 1154 * scope if necessary. 1155 * 1156 ******************************************************************************/ 1157 1158 static ACPI_STATUS 1159 AcpiDmCommonAscendingOp ( 1160 ACPI_PARSE_OBJECT *Op, 1161 UINT32 Level, 1162 void *Context) 1163 { 1164 ACPI_OP_WALK_INFO *Info = Context; 1165 ACPI_OBJECT_TYPE ObjectType; 1166 1167 1168 /* Close scope if necessary */ 1169 1170 ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); 1171 1172 if (AcpiNsOpensScope (ObjectType)) 1173 { 1174 (void) AcpiDsScopeStackPop (Info->WalkState); 1175 } 1176 1177 return (AE_OK); 1178 } 1179 1180 /******************************************************************************* 1181 * 1182 * FUNCTION: AcpiDmInspectPossibleArgs 1183 * 1184 * PARAMETERS: CurrentOpArgCount - Which arg of the current op was the 1185 * possible method invocation found 1186 * TargetCount - Number of targets (0,1,2) for this op 1187 * Op - Parse op 1188 * 1189 * RETURN: Status 1190 * 1191 * DESCRIPTION: Examine following args and next ops for possible arguments 1192 * for an unrecognized method invocation. 1193 * 1194 ******************************************************************************/ 1195 1196 static UINT32 1197 AcpiDmInspectPossibleArgs ( 1198 UINT32 CurrentOpArgCount, 1199 UINT32 TargetCount, 1200 ACPI_PARSE_OBJECT *Op) 1201 { 1202 const ACPI_OPCODE_INFO *OpInfo; 1203 UINT32 i; 1204 UINT32 ArgumentCount = 0; 1205 ACPI_PARSE_OBJECT *NextOp; 1206 ACPI_PARSE_OBJECT *ExecuteOp; 1207 1208 1209 if (!Op) 1210 { 1211 return (0); 1212 } 1213 1214 /* Lookahead for the maximum number of possible arguments */ 1215 1216 NextOp = Op->Common.Next; 1217 1218 for (i = 0; (i < ACPI_METHOD_NUM_ARGS) && NextOp; i++) 1219 { 1220 OpInfo = AcpiPsGetOpcodeInfo (NextOp->Common.AmlOpcode); 1221 1222 /* Any one of these operators is "very probably" not a method arg */ 1223 1224 if ((NextOp->Common.AmlOpcode == AML_STORE_OP) || 1225 (NextOp->Common.AmlOpcode == AML_NOTIFY_OP) || 1226 (OpInfo->Class == AML_CLASS_CONTROL) || 1227 (OpInfo->Class == AML_CLASS_CREATE) || 1228 (OpInfo->Class == AML_CLASS_NAMED_OBJECT)) 1229 { 1230 break; 1231 } 1232 1233 if (OpInfo->Class == AML_CLASS_EXECUTE) 1234 { 1235 /* Probable that this is method arg if there is no target */ 1236 1237 ExecuteOp = NextOp->Common.Value.Arg; 1238 while (ExecuteOp) 1239 { 1240 if ((ExecuteOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && 1241 (ExecuteOp->Common.Value.Arg == NULL)) 1242 { 1243 /* No target, could be a method arg */ 1244 1245 break; 1246 } 1247 1248 if (NextOp->Common.AmlOpcode == AML_REF_OF_OP) 1249 { 1250 break; 1251 } 1252 1253 ExecuteOp = ExecuteOp->Common.Next; 1254 } 1255 1256 if (!ExecuteOp) 1257 { 1258 /* Has a target, not method arg */ 1259 1260 return (ArgumentCount); 1261 } 1262 } 1263 1264 ArgumentCount++; 1265 NextOp = NextOp->Common.Next; 1266 } 1267 1268 return (ArgumentCount); 1269 } 1270