1 /****************************************************************************** 2 * 3 * Module Name: psobject - Support for parse objects 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2022, 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/acconvert.h> 157 #include <contrib/dev/acpica/include/acnamesp.h> 158 159 #define _COMPONENT ACPI_PARSER 160 ACPI_MODULE_NAME ("psobject") 161 162 163 /* Local prototypes */ 164 165 static ACPI_STATUS 166 AcpiPsGetAmlOpcode ( 167 ACPI_WALK_STATE *WalkState); 168 169 170 /******************************************************************************* 171 * 172 * FUNCTION: AcpiPsGetAmlOpcode 173 * 174 * PARAMETERS: WalkState - Current state 175 * 176 * RETURN: Status 177 * 178 * DESCRIPTION: Extract the next AML opcode from the input stream. 179 * 180 ******************************************************************************/ 181 182 static ACPI_STATUS 183 AcpiPsGetAmlOpcode ( 184 ACPI_WALK_STATE *WalkState) 185 { 186 ACPI_ERROR_ONLY (UINT32 AmlOffset); 187 188 189 ACPI_FUNCTION_TRACE_PTR (PsGetAmlOpcode, WalkState); 190 191 192 WalkState->Aml = WalkState->ParserState.Aml; 193 WalkState->Opcode = AcpiPsPeekOpcode (&(WalkState->ParserState)); 194 195 /* 196 * First cut to determine what we have found: 197 * 1) A valid AML opcode 198 * 2) A name string 199 * 3) An unknown/invalid opcode 200 */ 201 WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); 202 203 switch (WalkState->OpInfo->Class) 204 { 205 case AML_CLASS_ASCII: 206 case AML_CLASS_PREFIX: 207 /* 208 * Starts with a valid prefix or ASCII char, this is a name 209 * string. Convert the bare name string to a namepath. 210 */ 211 WalkState->Opcode = AML_INT_NAMEPATH_OP; 212 WalkState->ArgTypes = ARGP_NAMESTRING; 213 break; 214 215 case AML_CLASS_UNKNOWN: 216 217 /* The opcode is unrecognized. Complain and skip unknown opcodes */ 218 219 if (WalkState->PassNumber == 2) 220 { 221 ACPI_ERROR_ONLY(AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->Aml, 222 WalkState->ParserState.AmlStart)); 223 224 ACPI_ERROR ((AE_INFO, 225 "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring", 226 WalkState->Opcode, 227 (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER)))); 228 229 ACPI_DUMP_BUFFER ((WalkState->ParserState.Aml - 16), 48); 230 231 #ifdef ACPI_ASL_COMPILER 232 /* 233 * This is executed for the disassembler only. Output goes 234 * to the disassembled ASL output file. 235 */ 236 AcpiOsPrintf ( 237 "/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n", 238 WalkState->Opcode, 239 (UINT32) (AmlOffset + sizeof (ACPI_TABLE_HEADER))); 240 241 ACPI_ERROR ((AE_INFO, 242 "Aborting disassembly, AML byte code is corrupt")); 243 244 /* Dump the context surrounding the invalid opcode */ 245 246 AcpiUtDumpBuffer (((UINT8 *) WalkState->ParserState.Aml - 16), 247 48, DB_BYTE_DISPLAY, 248 (AmlOffset + sizeof (ACPI_TABLE_HEADER) - 16)); 249 AcpiOsPrintf (" */\n"); 250 251 /* 252 * Just abort the disassembly, cannot continue because the 253 * parser is essentially lost. The disassembler can then 254 * randomly fail because an ill-constructed parse tree 255 * can result. 256 */ 257 return_ACPI_STATUS (AE_AML_BAD_OPCODE); 258 #endif 259 } 260 261 /* Increment past one-byte or two-byte opcode */ 262 263 WalkState->ParserState.Aml++; 264 if (WalkState->Opcode > 0xFF) /* Can only happen if first byte is 0x5B */ 265 { 266 WalkState->ParserState.Aml++; 267 } 268 269 return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); 270 271 default: 272 273 /* Found opcode info, this is a normal opcode */ 274 275 WalkState->ParserState.Aml += 276 AcpiPsGetOpcodeSize (WalkState->Opcode); 277 WalkState->ArgTypes = WalkState->OpInfo->ParseArgs; 278 break; 279 } 280 281 return_ACPI_STATUS (AE_OK); 282 } 283 284 285 /******************************************************************************* 286 * 287 * FUNCTION: AcpiPsBuildNamedOp 288 * 289 * PARAMETERS: WalkState - Current state 290 * AmlOpStart - Begin of named Op in AML 291 * UnnamedOp - Early Op (not a named Op) 292 * Op - Returned Op 293 * 294 * RETURN: Status 295 * 296 * DESCRIPTION: Parse a named Op 297 * 298 ******************************************************************************/ 299 300 ACPI_STATUS 301 AcpiPsBuildNamedOp ( 302 ACPI_WALK_STATE *WalkState, 303 UINT8 *AmlOpStart, 304 ACPI_PARSE_OBJECT *UnnamedOp, 305 ACPI_PARSE_OBJECT **Op) 306 { 307 ACPI_STATUS Status = AE_OK; 308 ACPI_PARSE_OBJECT *Arg = NULL; 309 310 311 ACPI_FUNCTION_TRACE_PTR (PsBuildNamedOp, WalkState); 312 313 314 UnnamedOp->Common.Value.Arg = NULL; 315 UnnamedOp->Common.ArgListLength = 0; 316 UnnamedOp->Common.AmlOpcode = WalkState->Opcode; 317 318 /* 319 * Get and append arguments until we find the node that contains 320 * the name (the type ARGP_NAME). 321 */ 322 while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) && 323 (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) != ARGP_NAME)) 324 { 325 ASL_CV_CAPTURE_COMMENTS (WalkState); 326 Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState), 327 GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg); 328 if (ACPI_FAILURE (Status)) 329 { 330 return_ACPI_STATUS (Status); 331 } 332 333 AcpiPsAppendArg (UnnamedOp, Arg); 334 INCREMENT_ARG_LIST (WalkState->ArgTypes); 335 } 336 337 /* are there any inline comments associated with the NameSeg?? If so, save this. */ 338 339 ASL_CV_CAPTURE_COMMENTS (WalkState); 340 341 #ifdef ACPI_ASL_COMPILER 342 if (AcpiGbl_CurrentInlineComment != NULL) 343 { 344 UnnamedOp->Common.NameComment = AcpiGbl_CurrentInlineComment; 345 AcpiGbl_CurrentInlineComment = NULL; 346 } 347 #endif 348 349 /* 350 * Make sure that we found a NAME and didn't run out of arguments 351 */ 352 if (!GET_CURRENT_ARG_TYPE (WalkState->ArgTypes)) 353 { 354 return_ACPI_STATUS (AE_AML_NO_OPERAND); 355 } 356 357 /* We know that this arg is a name, move to next arg */ 358 359 INCREMENT_ARG_LIST (WalkState->ArgTypes); 360 361 /* 362 * Find the object. This will either insert the object into 363 * the namespace or simply look it up 364 */ 365 WalkState->Op = NULL; 366 367 Status = WalkState->DescendingCallback (WalkState, Op); 368 if (ACPI_FAILURE (Status)) 369 { 370 if (Status != AE_CTRL_TERMINATE) 371 { 372 ACPI_EXCEPTION ((AE_INFO, Status, "During name lookup/catalog")); 373 } 374 return_ACPI_STATUS (Status); 375 } 376 377 if (!*Op) 378 { 379 return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); 380 } 381 382 Status = AcpiPsNextParseState (WalkState, *Op, Status); 383 if (ACPI_FAILURE (Status)) 384 { 385 if (Status == AE_CTRL_PENDING) 386 { 387 Status = AE_CTRL_PARSE_PENDING; 388 } 389 return_ACPI_STATUS (Status); 390 } 391 392 AcpiPsAppendArg (*Op, UnnamedOp->Common.Value.Arg); 393 394 #ifdef ACPI_ASL_COMPILER 395 396 /* save any comments that might be associated with UnnamedOp. */ 397 398 (*Op)->Common.InlineComment = UnnamedOp->Common.InlineComment; 399 (*Op)->Common.EndNodeComment = UnnamedOp->Common.EndNodeComment; 400 (*Op)->Common.CloseBraceComment = UnnamedOp->Common.CloseBraceComment; 401 (*Op)->Common.NameComment = UnnamedOp->Common.NameComment; 402 (*Op)->Common.CommentList = UnnamedOp->Common.CommentList; 403 (*Op)->Common.EndBlkComment = UnnamedOp->Common.EndBlkComment; 404 (*Op)->Common.CvFilename = UnnamedOp->Common.CvFilename; 405 (*Op)->Common.CvParentFilename = UnnamedOp->Common.CvParentFilename; 406 (*Op)->Named.Aml = UnnamedOp->Common.Aml; 407 408 UnnamedOp->Common.InlineComment = NULL; 409 UnnamedOp->Common.EndNodeComment = NULL; 410 UnnamedOp->Common.CloseBraceComment = NULL; 411 UnnamedOp->Common.NameComment = NULL; 412 UnnamedOp->Common.CommentList = NULL; 413 UnnamedOp->Common.EndBlkComment = NULL; 414 #endif 415 416 if ((*Op)->Common.AmlOpcode == AML_REGION_OP || 417 (*Op)->Common.AmlOpcode == AML_DATA_REGION_OP) 418 { 419 /* 420 * Defer final parsing of an OperationRegion body, because we don't 421 * have enough info in the first pass to parse it correctly (i.e., 422 * there may be method calls within the TermArg elements of the body.) 423 * 424 * However, we must continue parsing because the opregion is not a 425 * standalone package -- we don't know where the end is at this point. 426 * 427 * (Length is unknown until parse of the body complete) 428 */ 429 (*Op)->Named.Data = AmlOpStart; 430 (*Op)->Named.Length = 0; 431 } 432 433 return_ACPI_STATUS (AE_OK); 434 } 435 436 437 /******************************************************************************* 438 * 439 * FUNCTION: AcpiPsCreateOp 440 * 441 * PARAMETERS: WalkState - Current state 442 * AmlOpStart - Op start in AML 443 * NewOp - Returned Op 444 * 445 * RETURN: Status 446 * 447 * DESCRIPTION: Get Op from AML 448 * 449 ******************************************************************************/ 450 451 ACPI_STATUS 452 AcpiPsCreateOp ( 453 ACPI_WALK_STATE *WalkState, 454 UINT8 *AmlOpStart, 455 ACPI_PARSE_OBJECT **NewOp) 456 { 457 ACPI_STATUS Status = AE_OK; 458 ACPI_PARSE_OBJECT *Op; 459 ACPI_PARSE_OBJECT *NamedOp = NULL; 460 ACPI_PARSE_OBJECT *ParentScope; 461 UINT8 ArgumentCount; 462 const ACPI_OPCODE_INFO *OpInfo; 463 464 465 ACPI_FUNCTION_TRACE_PTR (PsCreateOp, WalkState); 466 467 468 Status = AcpiPsGetAmlOpcode (WalkState); 469 if (Status == AE_CTRL_PARSE_CONTINUE) 470 { 471 return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); 472 } 473 if (ACPI_FAILURE (Status)) 474 { 475 return_ACPI_STATUS (Status); 476 } 477 478 /* Create Op structure and append to parent's argument list */ 479 480 WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); 481 Op = AcpiPsAllocOp (WalkState->Opcode, AmlOpStart); 482 if (!Op) 483 { 484 return_ACPI_STATUS (AE_NO_MEMORY); 485 } 486 487 if (WalkState->OpInfo->Flags & AML_NAMED) 488 { 489 Status = AcpiPsBuildNamedOp (WalkState, AmlOpStart, Op, &NamedOp); 490 AcpiPsFreeOp (Op); 491 492 #ifdef ACPI_ASL_COMPILER 493 if (AcpiGbl_DisasmFlag && WalkState->Opcode == AML_EXTERNAL_OP && 494 Status == AE_NOT_FOUND) 495 { 496 /* 497 * If parsing of AML_EXTERNAL_OP's name path fails, then skip 498 * past this opcode and keep parsing. This is a much better 499 * alternative than to abort the entire disassembler. At this 500 * point, the ParserState is at the end of the namepath of the 501 * external declaration opcode. Setting WalkState->Aml to 502 * WalkState->ParserState.Aml + 2 moves increments the 503 * WalkState->Aml past the object type and the paramcount of the 504 * external opcode. 505 */ 506 WalkState->Aml = WalkState->ParserState.Aml + 2; 507 WalkState->ParserState.Aml = WalkState->Aml; 508 return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); 509 } 510 #endif 511 if (ACPI_FAILURE (Status)) 512 { 513 return_ACPI_STATUS (Status); 514 } 515 516 *NewOp = NamedOp; 517 return_ACPI_STATUS (AE_OK); 518 } 519 520 /* Not a named opcode, just allocate Op and append to parent */ 521 522 if (WalkState->OpInfo->Flags & AML_CREATE) 523 { 524 /* 525 * Backup to beginning of CreateXXXfield declaration 526 * BodyLength is unknown until we parse the body 527 */ 528 Op->Named.Data = AmlOpStart; 529 Op->Named.Length = 0; 530 } 531 532 if (WalkState->Opcode == AML_BANK_FIELD_OP) 533 { 534 /* 535 * Backup to beginning of BankField declaration 536 * BodyLength is unknown until we parse the body 537 */ 538 Op->Named.Data = AmlOpStart; 539 Op->Named.Length = 0; 540 } 541 542 ParentScope = AcpiPsGetParentScope (&(WalkState->ParserState)); 543 AcpiPsAppendArg (ParentScope, Op); 544 545 if (ParentScope) 546 { 547 OpInfo = AcpiPsGetOpcodeInfo (ParentScope->Common.AmlOpcode); 548 if (OpInfo->Flags & AML_HAS_TARGET) 549 { 550 ArgumentCount = AcpiPsGetArgumentCount (OpInfo->Type); 551 if (ParentScope->Common.ArgListLength > ArgumentCount) 552 { 553 Op->Common.Flags |= ACPI_PARSEOP_TARGET; 554 } 555 } 556 557 /* 558 * Special case for both Increment() and Decrement(), where 559 * the lone argument is both a source and a target. 560 */ 561 else if ((ParentScope->Common.AmlOpcode == AML_INCREMENT_OP) || 562 (ParentScope->Common.AmlOpcode == AML_DECREMENT_OP)) 563 { 564 Op->Common.Flags |= ACPI_PARSEOP_TARGET; 565 } 566 } 567 568 if (WalkState->DescendingCallback != NULL) 569 { 570 /* 571 * Find the object. This will either insert the object into 572 * the namespace or simply look it up 573 */ 574 WalkState->Op = *NewOp = Op; 575 576 Status = WalkState->DescendingCallback (WalkState, &Op); 577 Status = AcpiPsNextParseState (WalkState, Op, Status); 578 if (Status == AE_CTRL_PENDING) 579 { 580 Status = AE_CTRL_PARSE_PENDING; 581 } 582 } 583 584 return_ACPI_STATUS (Status); 585 } 586 587 588 /******************************************************************************* 589 * 590 * FUNCTION: AcpiPsCompleteOp 591 * 592 * PARAMETERS: WalkState - Current state 593 * Op - Returned Op 594 * Status - Parse status before complete Op 595 * 596 * RETURN: Status 597 * 598 * DESCRIPTION: Complete Op 599 * 600 ******************************************************************************/ 601 602 ACPI_STATUS 603 AcpiPsCompleteOp ( 604 ACPI_WALK_STATE *WalkState, 605 ACPI_PARSE_OBJECT **Op, 606 ACPI_STATUS Status) 607 { 608 ACPI_STATUS Status2; 609 610 611 ACPI_FUNCTION_TRACE_PTR (PsCompleteOp, WalkState); 612 613 614 /* 615 * Finished one argument of the containing scope 616 */ 617 WalkState->ParserState.Scope->ParseScope.ArgCount--; 618 619 /* Close this Op (will result in parse subtree deletion) */ 620 621 Status2 = AcpiPsCompleteThisOp (WalkState, *Op); 622 if (ACPI_FAILURE (Status2)) 623 { 624 return_ACPI_STATUS (Status2); 625 } 626 627 *Op = NULL; 628 629 switch (Status) 630 { 631 case AE_OK: 632 633 break; 634 635 case AE_CTRL_TRANSFER: 636 637 /* We are about to transfer to a called method */ 638 639 WalkState->PrevOp = NULL; 640 WalkState->PrevArgTypes = WalkState->ArgTypes; 641 return_ACPI_STATUS (Status); 642 643 case AE_CTRL_END: 644 645 AcpiPsPopScope (&(WalkState->ParserState), Op, 646 &WalkState->ArgTypes, &WalkState->ArgCount); 647 648 if (*Op) 649 { 650 WalkState->Op = *Op; 651 WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); 652 WalkState->Opcode = (*Op)->Common.AmlOpcode; 653 654 Status = WalkState->AscendingCallback (WalkState); 655 (void) AcpiPsNextParseState (WalkState, *Op, Status); 656 657 Status2 = AcpiPsCompleteThisOp (WalkState, *Op); 658 if (ACPI_FAILURE (Status2)) 659 { 660 return_ACPI_STATUS (Status2); 661 } 662 } 663 664 break; 665 666 case AE_CTRL_BREAK: 667 case AE_CTRL_CONTINUE: 668 669 /* Pop off scopes until we find the While */ 670 671 while (!(*Op) || ((*Op)->Common.AmlOpcode != AML_WHILE_OP)) 672 { 673 AcpiPsPopScope (&(WalkState->ParserState), Op, 674 &WalkState->ArgTypes, &WalkState->ArgCount); 675 } 676 677 /* Close this iteration of the While loop */ 678 679 WalkState->Op = *Op; 680 WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); 681 WalkState->Opcode = (*Op)->Common.AmlOpcode; 682 683 Status = WalkState->AscendingCallback (WalkState); 684 (void) AcpiPsNextParseState (WalkState, *Op, Status); 685 686 Status2 = AcpiPsCompleteThisOp (WalkState, *Op); 687 if (ACPI_FAILURE (Status2)) 688 { 689 return_ACPI_STATUS (Status2); 690 } 691 692 break; 693 694 case AE_CTRL_TERMINATE: 695 696 /* Clean up */ 697 do 698 { 699 if (*Op) 700 { 701 Status2 = AcpiPsCompleteThisOp (WalkState, *Op); 702 if (ACPI_FAILURE (Status2)) 703 { 704 return_ACPI_STATUS (Status2); 705 } 706 707 AcpiUtDeleteGenericState ( 708 AcpiUtPopGenericState (&WalkState->ControlState)); 709 } 710 711 AcpiPsPopScope (&(WalkState->ParserState), Op, 712 &WalkState->ArgTypes, &WalkState->ArgCount); 713 714 } while (*Op); 715 716 return_ACPI_STATUS (AE_OK); 717 718 default: /* All other non-AE_OK status */ 719 720 do 721 { 722 if (*Op) 723 { 724 /* 725 * These Opcodes need to be removed from the namespace because they 726 * get created even if these opcodes cannot be created due to 727 * errors. 728 */ 729 if (((*Op)->Common.AmlOpcode == AML_REGION_OP) || 730 ((*Op)->Common.AmlOpcode == AML_DATA_REGION_OP)) 731 { 732 AcpiNsDeleteChildren ((*Op)->Common.Node); 733 AcpiNsRemoveNode ((*Op)->Common.Node); 734 (*Op)->Common.Node = NULL; 735 AcpiPsDeleteParseTree (*Op); 736 } 737 738 Status2 = AcpiPsCompleteThisOp (WalkState, *Op); 739 if (ACPI_FAILURE (Status2)) 740 { 741 return_ACPI_STATUS (Status2); 742 } 743 } 744 745 AcpiPsPopScope (&(WalkState->ParserState), Op, 746 &WalkState->ArgTypes, &WalkState->ArgCount); 747 748 } while (*Op); 749 750 751 #if 0 752 /* 753 * TBD: Cleanup parse ops on error 754 */ 755 if (*Op == NULL) 756 { 757 AcpiPsPopScope (ParserState, Op, 758 &WalkState->ArgTypes, &WalkState->ArgCount); 759 } 760 #endif 761 WalkState->PrevOp = NULL; 762 WalkState->PrevArgTypes = WalkState->ArgTypes; 763 764 if (WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL) 765 { 766 /* 767 * There was something that went wrong while executing code at the 768 * module-level. We need to skip parsing whatever caused the 769 * error and keep going. One runtime error during the table load 770 * should not cause the entire table to not be loaded. This is 771 * because there could be correct AML beyond the parts that caused 772 * the runtime error. 773 */ 774 ACPI_INFO (("Ignoring error and continuing table load")); 775 return_ACPI_STATUS (AE_OK); 776 } 777 return_ACPI_STATUS (Status); 778 } 779 780 /* This scope complete? */ 781 782 if (AcpiPsHasCompletedScope (&(WalkState->ParserState))) 783 { 784 AcpiPsPopScope (&(WalkState->ParserState), Op, 785 &WalkState->ArgTypes, &WalkState->ArgCount); 786 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *Op)); 787 } 788 else 789 { 790 *Op = NULL; 791 } 792 793 return_ACPI_STATUS (AE_OK); 794 } 795 796 797 /******************************************************************************* 798 * 799 * FUNCTION: AcpiPsCompleteFinalOp 800 * 801 * PARAMETERS: WalkState - Current state 802 * Op - Current Op 803 * Status - Current parse status before complete last 804 * Op 805 * 806 * RETURN: Status 807 * 808 * DESCRIPTION: Complete last Op. 809 * 810 ******************************************************************************/ 811 812 ACPI_STATUS 813 AcpiPsCompleteFinalOp ( 814 ACPI_WALK_STATE *WalkState, 815 ACPI_PARSE_OBJECT *Op, 816 ACPI_STATUS Status) 817 { 818 ACPI_STATUS Status2; 819 820 821 ACPI_FUNCTION_TRACE_PTR (PsCompleteFinalOp, WalkState); 822 823 824 /* 825 * Complete the last Op (if not completed), and clear the scope stack. 826 * It is easily possible to end an AML "package" with an unbounded number 827 * of open scopes (such as when several ASL blocks are closed with 828 * sequential closing braces). We want to terminate each one cleanly. 829 */ 830 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", Op)); 831 do 832 { 833 if (Op) 834 { 835 if (WalkState->AscendingCallback != NULL) 836 { 837 WalkState->Op = Op; 838 WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 839 WalkState->Opcode = Op->Common.AmlOpcode; 840 841 Status = WalkState->AscendingCallback (WalkState); 842 Status = AcpiPsNextParseState (WalkState, Op, Status); 843 if (Status == AE_CTRL_PENDING) 844 { 845 Status = AcpiPsCompleteOp (WalkState, &Op, AE_OK); 846 if (ACPI_FAILURE (Status)) 847 { 848 return_ACPI_STATUS (Status); 849 } 850 } 851 852 if (Status == AE_CTRL_TERMINATE) 853 { 854 Status = AE_OK; 855 856 /* Clean up */ 857 do 858 { 859 if (Op) 860 { 861 Status2 = AcpiPsCompleteThisOp (WalkState, Op); 862 if (ACPI_FAILURE (Status2)) 863 { 864 return_ACPI_STATUS (Status2); 865 } 866 } 867 868 AcpiPsPopScope (&(WalkState->ParserState), &Op, 869 &WalkState->ArgTypes, &WalkState->ArgCount); 870 871 } while (Op); 872 873 return_ACPI_STATUS (Status); 874 } 875 876 else if (ACPI_FAILURE (Status)) 877 { 878 /* First error is most important */ 879 880 (void) AcpiPsCompleteThisOp (WalkState, Op); 881 return_ACPI_STATUS (Status); 882 } 883 } 884 885 Status2 = AcpiPsCompleteThisOp (WalkState, Op); 886 if (ACPI_FAILURE (Status2)) 887 { 888 return_ACPI_STATUS (Status2); 889 } 890 } 891 892 AcpiPsPopScope (&(WalkState->ParserState), &Op, &WalkState->ArgTypes, 893 &WalkState->ArgCount); 894 895 } while (Op); 896 897 return_ACPI_STATUS (Status); 898 } 899