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