1 /****************************************************************************** 2 * 3 * Module Name: psargs - Parse AML opcode arguments 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2016, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 #include "acpi.h" 45 #include "accommon.h" 46 #include "acparser.h" 47 #include "amlcode.h" 48 #include "acnamesp.h" 49 #include "acdispat.h" 50 51 #define _COMPONENT ACPI_PARSER 52 ACPI_MODULE_NAME ("psargs") 53 54 /* Local prototypes */ 55 56 static UINT32 57 AcpiPsGetNextPackageLength ( 58 ACPI_PARSE_STATE *ParserState); 59 60 static ACPI_PARSE_OBJECT * 61 AcpiPsGetNextField ( 62 ACPI_PARSE_STATE *ParserState); 63 64 65 /******************************************************************************* 66 * 67 * FUNCTION: AcpiPsGetNextPackageLength 68 * 69 * PARAMETERS: ParserState - Current parser state object 70 * 71 * RETURN: Decoded package length. On completion, the AML pointer points 72 * past the length byte or bytes. 73 * 74 * DESCRIPTION: Decode and return a package length field. 75 * Note: Largest package length is 28 bits, from ACPI specification 76 * 77 ******************************************************************************/ 78 79 static UINT32 80 AcpiPsGetNextPackageLength ( 81 ACPI_PARSE_STATE *ParserState) 82 { 83 UINT8 *Aml = ParserState->Aml; 84 UINT32 PackageLength = 0; 85 UINT32 ByteCount; 86 UINT8 ByteZeroMask = 0x3F; /* Default [0:5] */ 87 88 89 ACPI_FUNCTION_TRACE (PsGetNextPackageLength); 90 91 92 /* 93 * Byte 0 bits [6:7] contain the number of additional bytes 94 * used to encode the package length, either 0,1,2, or 3 95 */ 96 ByteCount = (Aml[0] >> 6); 97 ParserState->Aml += ((ACPI_SIZE) ByteCount + 1); 98 99 /* Get bytes 3, 2, 1 as needed */ 100 101 while (ByteCount) 102 { 103 /* 104 * Final bit positions for the package length bytes: 105 * Byte3->[20:27] 106 * Byte2->[12:19] 107 * Byte1->[04:11] 108 * Byte0->[00:03] 109 */ 110 PackageLength |= (Aml[ByteCount] << ((ByteCount << 3) - 4)); 111 112 ByteZeroMask = 0x0F; /* Use bits [0:3] of byte 0 */ 113 ByteCount--; 114 } 115 116 /* Byte 0 is a special case, either bits [0:3] or [0:5] are used */ 117 118 PackageLength |= (Aml[0] & ByteZeroMask); 119 return_UINT32 (PackageLength); 120 } 121 122 123 /******************************************************************************* 124 * 125 * FUNCTION: AcpiPsGetNextPackageEnd 126 * 127 * PARAMETERS: ParserState - Current parser state object 128 * 129 * RETURN: Pointer to end-of-package +1 130 * 131 * DESCRIPTION: Get next package length and return a pointer past the end of 132 * the package. Consumes the package length field 133 * 134 ******************************************************************************/ 135 136 UINT8 * 137 AcpiPsGetNextPackageEnd ( 138 ACPI_PARSE_STATE *ParserState) 139 { 140 UINT8 *Start = ParserState->Aml; 141 UINT32 PackageLength; 142 143 144 ACPI_FUNCTION_TRACE (PsGetNextPackageEnd); 145 146 147 /* Function below updates ParserState->Aml */ 148 149 PackageLength = AcpiPsGetNextPackageLength (ParserState); 150 151 return_PTR (Start + PackageLength); /* end of package */ 152 } 153 154 155 /******************************************************************************* 156 * 157 * FUNCTION: AcpiPsGetNextNamestring 158 * 159 * PARAMETERS: ParserState - Current parser state object 160 * 161 * RETURN: Pointer to the start of the name string (pointer points into 162 * the AML. 163 * 164 * DESCRIPTION: Get next raw namestring within the AML stream. Handles all name 165 * prefix characters. Set parser state to point past the string. 166 * (Name is consumed from the AML.) 167 * 168 ******************************************************************************/ 169 170 char * 171 AcpiPsGetNextNamestring ( 172 ACPI_PARSE_STATE *ParserState) 173 { 174 UINT8 *Start = ParserState->Aml; 175 UINT8 *End = ParserState->Aml; 176 177 178 ACPI_FUNCTION_TRACE (PsGetNextNamestring); 179 180 181 /* Point past any namestring prefix characters (backslash or carat) */ 182 183 while (ACPI_IS_ROOT_PREFIX (*End) || 184 ACPI_IS_PARENT_PREFIX (*End)) 185 { 186 End++; 187 } 188 189 /* Decode the path prefix character */ 190 191 switch (*End) 192 { 193 case 0: 194 195 /* NullName */ 196 197 if (End == Start) 198 { 199 Start = NULL; 200 } 201 End++; 202 break; 203 204 case AML_DUAL_NAME_PREFIX: 205 206 /* Two name segments */ 207 208 End += 1 + (2 * ACPI_NAME_SIZE); 209 break; 210 211 case AML_MULTI_NAME_PREFIX_OP: 212 213 /* Multiple name segments, 4 chars each, count in next byte */ 214 215 End += 2 + (*(End + 1) * ACPI_NAME_SIZE); 216 break; 217 218 default: 219 220 /* Single name segment */ 221 222 End += ACPI_NAME_SIZE; 223 break; 224 } 225 226 ParserState->Aml = End; 227 return_PTR ((char *) Start); 228 } 229 230 231 /******************************************************************************* 232 * 233 * FUNCTION: AcpiPsGetNextNamepath 234 * 235 * PARAMETERS: ParserState - Current parser state object 236 * Arg - Where the namepath will be stored 237 * ArgCount - If the namepath points to a control method 238 * the method's argument is returned here. 239 * PossibleMethodCall - Whether the namepath can possibly be the 240 * start of a method call 241 * 242 * RETURN: Status 243 * 244 * DESCRIPTION: Get next name (if method call, return # of required args). 245 * Names are looked up in the internal namespace to determine 246 * if the name represents a control method. If a method 247 * is found, the number of arguments to the method is returned. 248 * This information is critical for parsing to continue correctly. 249 * 250 ******************************************************************************/ 251 252 ACPI_STATUS 253 AcpiPsGetNextNamepath ( 254 ACPI_WALK_STATE *WalkState, 255 ACPI_PARSE_STATE *ParserState, 256 ACPI_PARSE_OBJECT *Arg, 257 BOOLEAN PossibleMethodCall) 258 { 259 ACPI_STATUS Status; 260 char *Path; 261 ACPI_PARSE_OBJECT *NameOp; 262 ACPI_OPERAND_OBJECT *MethodDesc; 263 ACPI_NAMESPACE_NODE *Node; 264 UINT8 *Start = ParserState->Aml; 265 266 267 ACPI_FUNCTION_TRACE (PsGetNextNamepath); 268 269 270 Path = AcpiPsGetNextNamestring (ParserState); 271 AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP); 272 273 /* Null path case is allowed, just exit */ 274 275 if (!Path) 276 { 277 Arg->Common.Value.Name = Path; 278 return_ACPI_STATUS (AE_OK); 279 } 280 281 /* 282 * Lookup the name in the internal namespace, starting with the current 283 * scope. We don't want to add anything new to the namespace here, 284 * however, so we use MODE_EXECUTE. 285 * Allow searching of the parent tree, but don't open a new scope - 286 * we just want to lookup the object (must be mode EXECUTE to perform 287 * the upsearch) 288 */ 289 Status = AcpiNsLookup (WalkState->ScopeInfo, Path, 290 ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, 291 ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &Node); 292 293 /* 294 * If this name is a control method invocation, we must 295 * setup the method call 296 */ 297 if (ACPI_SUCCESS (Status) && 298 PossibleMethodCall && 299 (Node->Type == ACPI_TYPE_METHOD)) 300 { 301 /* This name is actually a control method invocation */ 302 303 MethodDesc = AcpiNsGetAttachedObject (Node); 304 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 305 "Control Method invocation %4.4s - %p Desc %p Path=%p\n", 306 Node->Name.Ascii, Node, MethodDesc, Path)); 307 308 NameOp = AcpiPsAllocOp (AML_INT_NAMEPATH_OP, Start); 309 if (!NameOp) 310 { 311 return_ACPI_STATUS (AE_NO_MEMORY); 312 } 313 314 /* Change Arg into a METHOD CALL and attach name to it */ 315 316 AcpiPsInitOp (Arg, AML_INT_METHODCALL_OP); 317 NameOp->Common.Value.Name = Path; 318 319 /* Point METHODCALL/NAME to the METHOD Node */ 320 321 NameOp->Common.Node = Node; 322 AcpiPsAppendArg (Arg, NameOp); 323 324 if (!MethodDesc) 325 { 326 ACPI_ERROR ((AE_INFO, 327 "Control Method %p has no attached object", 328 Node)); 329 return_ACPI_STATUS (AE_AML_INTERNAL); 330 } 331 332 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 333 "Control Method - %p Args %X\n", 334 Node, MethodDesc->Method.ParamCount)); 335 336 /* Get the number of arguments to expect */ 337 338 WalkState->ArgCount = MethodDesc->Method.ParamCount; 339 return_ACPI_STATUS (AE_OK); 340 } 341 342 /* 343 * Special handling if the name was not found during the lookup - 344 * some NotFound cases are allowed 345 */ 346 if (Status == AE_NOT_FOUND) 347 { 348 /* 1) NotFound is ok during load pass 1/2 (allow forward references) */ 349 350 if ((WalkState->ParseFlags & ACPI_PARSE_MODE_MASK) != 351 ACPI_PARSE_EXECUTE) 352 { 353 Status = AE_OK; 354 } 355 356 /* 2) NotFound during a CondRefOf(x) is ok by definition */ 357 358 else if (WalkState->Op->Common.AmlOpcode == AML_COND_REF_OF_OP) 359 { 360 Status = AE_OK; 361 } 362 363 /* 364 * 3) NotFound while building a Package is ok at this point, we 365 * may flag as an error later if slack mode is not enabled. 366 * (Some ASL code depends on allowing this behavior) 367 */ 368 else if ((Arg->Common.Parent) && 369 ((Arg->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) || 370 (Arg->Common.Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP))) 371 { 372 Status = AE_OK; 373 } 374 } 375 376 /* Final exception check (may have been changed from code above) */ 377 378 if (ACPI_FAILURE (Status)) 379 { 380 ACPI_ERROR_NAMESPACE (Path, Status); 381 382 if ((WalkState->ParseFlags & ACPI_PARSE_MODE_MASK) == 383 ACPI_PARSE_EXECUTE) 384 { 385 /* Report a control method execution error */ 386 387 Status = AcpiDsMethodError (Status, WalkState); 388 } 389 } 390 391 /* Save the namepath */ 392 393 Arg->Common.Value.Name = Path; 394 return_ACPI_STATUS (Status); 395 } 396 397 398 /******************************************************************************* 399 * 400 * FUNCTION: AcpiPsGetNextSimpleArg 401 * 402 * PARAMETERS: ParserState - Current parser state object 403 * ArgType - The argument type (AML_*_ARG) 404 * Arg - Where the argument is returned 405 * 406 * RETURN: None 407 * 408 * DESCRIPTION: Get the next simple argument (constant, string, or namestring) 409 * 410 ******************************************************************************/ 411 412 void 413 AcpiPsGetNextSimpleArg ( 414 ACPI_PARSE_STATE *ParserState, 415 UINT32 ArgType, 416 ACPI_PARSE_OBJECT *Arg) 417 { 418 UINT32 Length; 419 UINT16 Opcode; 420 UINT8 *Aml = ParserState->Aml; 421 422 423 ACPI_FUNCTION_TRACE_U32 (PsGetNextSimpleArg, ArgType); 424 425 426 switch (ArgType) 427 { 428 case ARGP_BYTEDATA: 429 430 /* Get 1 byte from the AML stream */ 431 432 Opcode = AML_BYTE_OP; 433 Arg->Common.Value.Integer = (UINT64) *Aml; 434 Length = 1; 435 break; 436 437 case ARGP_WORDDATA: 438 439 /* Get 2 bytes from the AML stream */ 440 441 Opcode = AML_WORD_OP; 442 ACPI_MOVE_16_TO_64 (&Arg->Common.Value.Integer, Aml); 443 Length = 2; 444 break; 445 446 case ARGP_DWORDDATA: 447 448 /* Get 4 bytes from the AML stream */ 449 450 Opcode = AML_DWORD_OP; 451 ACPI_MOVE_32_TO_64 (&Arg->Common.Value.Integer, Aml); 452 Length = 4; 453 break; 454 455 case ARGP_QWORDDATA: 456 457 /* Get 8 bytes from the AML stream */ 458 459 Opcode = AML_QWORD_OP; 460 ACPI_MOVE_64_TO_64 (&Arg->Common.Value.Integer, Aml); 461 Length = 8; 462 break; 463 464 case ARGP_CHARLIST: 465 466 /* Get a pointer to the string, point past the string */ 467 468 Opcode = AML_STRING_OP; 469 Arg->Common.Value.String = ACPI_CAST_PTR (char, Aml); 470 471 /* Find the null terminator */ 472 473 Length = 0; 474 while (Aml[Length]) 475 { 476 Length++; 477 } 478 Length++; 479 break; 480 481 case ARGP_NAME: 482 case ARGP_NAMESTRING: 483 484 AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP); 485 Arg->Common.Value.Name = AcpiPsGetNextNamestring (ParserState); 486 return_VOID; 487 488 default: 489 490 ACPI_ERROR ((AE_INFO, "Invalid ArgType 0x%X", ArgType)); 491 return_VOID; 492 } 493 494 AcpiPsInitOp (Arg, Opcode); 495 ParserState->Aml += Length; 496 return_VOID; 497 } 498 499 500 /******************************************************************************* 501 * 502 * FUNCTION: AcpiPsGetNextField 503 * 504 * PARAMETERS: ParserState - Current parser state object 505 * 506 * RETURN: A newly allocated FIELD op 507 * 508 * DESCRIPTION: Get next field (NamedField, ReservedField, or AccessField) 509 * 510 ******************************************************************************/ 511 512 static ACPI_PARSE_OBJECT * 513 AcpiPsGetNextField ( 514 ACPI_PARSE_STATE *ParserState) 515 { 516 UINT8 *Aml; 517 ACPI_PARSE_OBJECT *Field; 518 ACPI_PARSE_OBJECT *Arg = NULL; 519 UINT16 Opcode; 520 UINT32 Name; 521 UINT8 AccessType; 522 UINT8 AccessAttribute; 523 UINT8 AccessLength; 524 UINT32 PkgLength; 525 UINT8 *PkgEnd; 526 UINT32 BufferLength; 527 528 529 ACPI_FUNCTION_TRACE (PsGetNextField); 530 531 532 Aml = ParserState->Aml; 533 534 /* Determine field type */ 535 536 switch (ACPI_GET8 (ParserState->Aml)) 537 { 538 case AML_FIELD_OFFSET_OP: 539 540 Opcode = AML_INT_RESERVEDFIELD_OP; 541 ParserState->Aml++; 542 break; 543 544 case AML_FIELD_ACCESS_OP: 545 546 Opcode = AML_INT_ACCESSFIELD_OP; 547 ParserState->Aml++; 548 break; 549 550 case AML_FIELD_CONNECTION_OP: 551 552 Opcode = AML_INT_CONNECTION_OP; 553 ParserState->Aml++; 554 break; 555 556 case AML_FIELD_EXT_ACCESS_OP: 557 558 Opcode = AML_INT_EXTACCESSFIELD_OP; 559 ParserState->Aml++; 560 break; 561 562 default: 563 564 Opcode = AML_INT_NAMEDFIELD_OP; 565 break; 566 } 567 568 /* Allocate a new field op */ 569 570 Field = AcpiPsAllocOp (Opcode, Aml); 571 if (!Field) 572 { 573 return_PTR (NULL); 574 } 575 576 /* Decode the field type */ 577 578 switch (Opcode) 579 { 580 case AML_INT_NAMEDFIELD_OP: 581 582 /* Get the 4-character name */ 583 584 ACPI_MOVE_32_TO_32 (&Name, ParserState->Aml); 585 AcpiPsSetName (Field, Name); 586 ParserState->Aml += ACPI_NAME_SIZE; 587 588 /* Get the length which is encoded as a package length */ 589 590 Field->Common.Value.Size = AcpiPsGetNextPackageLength (ParserState); 591 break; 592 593 594 case AML_INT_RESERVEDFIELD_OP: 595 596 /* Get the length which is encoded as a package length */ 597 598 Field->Common.Value.Size = AcpiPsGetNextPackageLength (ParserState); 599 break; 600 601 602 case AML_INT_ACCESSFIELD_OP: 603 case AML_INT_EXTACCESSFIELD_OP: 604 605 /* 606 * Get AccessType and AccessAttrib and merge into the field Op 607 * AccessType is first operand, AccessAttribute is second. stuff 608 * these bytes into the node integer value for convenience. 609 */ 610 611 /* Get the two bytes (Type/Attribute) */ 612 613 AccessType = ACPI_GET8 (ParserState->Aml); 614 ParserState->Aml++; 615 AccessAttribute = ACPI_GET8 (ParserState->Aml); 616 ParserState->Aml++; 617 618 Field->Common.Value.Integer = (UINT8) AccessType; 619 Field->Common.Value.Integer |= (UINT16) (AccessAttribute << 8); 620 621 /* This opcode has a third byte, AccessLength */ 622 623 if (Opcode == AML_INT_EXTACCESSFIELD_OP) 624 { 625 AccessLength = ACPI_GET8 (ParserState->Aml); 626 ParserState->Aml++; 627 628 Field->Common.Value.Integer |= (UINT32) (AccessLength << 16); 629 } 630 break; 631 632 633 case AML_INT_CONNECTION_OP: 634 635 /* 636 * Argument for Connection operator can be either a Buffer 637 * (resource descriptor), or a NameString. 638 */ 639 Aml = ParserState->Aml; 640 if (ACPI_GET8 (ParserState->Aml) == AML_BUFFER_OP) 641 { 642 ParserState->Aml++; 643 644 PkgEnd = ParserState->Aml; 645 PkgLength = AcpiPsGetNextPackageLength (ParserState); 646 PkgEnd += PkgLength; 647 648 if (ParserState->Aml < PkgEnd) 649 { 650 /* Non-empty list */ 651 652 Arg = AcpiPsAllocOp (AML_INT_BYTELIST_OP, Aml); 653 if (!Arg) 654 { 655 AcpiPsFreeOp (Field); 656 return_PTR (NULL); 657 } 658 659 /* Get the actual buffer length argument */ 660 661 Opcode = ACPI_GET8 (ParserState->Aml); 662 ParserState->Aml++; 663 664 switch (Opcode) 665 { 666 case AML_BYTE_OP: /* AML_BYTEDATA_ARG */ 667 668 BufferLength = ACPI_GET8 (ParserState->Aml); 669 ParserState->Aml += 1; 670 break; 671 672 case AML_WORD_OP: /* AML_WORDDATA_ARG */ 673 674 BufferLength = ACPI_GET16 (ParserState->Aml); 675 ParserState->Aml += 2; 676 break; 677 678 case AML_DWORD_OP: /* AML_DWORDATA_ARG */ 679 680 BufferLength = ACPI_GET32 (ParserState->Aml); 681 ParserState->Aml += 4; 682 break; 683 684 default: 685 686 BufferLength = 0; 687 break; 688 } 689 690 /* Fill in bytelist data */ 691 692 Arg->Named.Value.Size = BufferLength; 693 Arg->Named.Data = ParserState->Aml; 694 } 695 696 /* Skip to End of byte data */ 697 698 ParserState->Aml = PkgEnd; 699 } 700 else 701 { 702 Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP, Aml); 703 if (!Arg) 704 { 705 AcpiPsFreeOp (Field); 706 return_PTR (NULL); 707 } 708 709 /* Get the Namestring argument */ 710 711 Arg->Common.Value.Name = AcpiPsGetNextNamestring (ParserState); 712 } 713 714 /* Link the buffer/namestring to parent (CONNECTION_OP) */ 715 716 AcpiPsAppendArg (Field, Arg); 717 break; 718 719 720 default: 721 722 /* Opcode was set in previous switch */ 723 break; 724 } 725 726 return_PTR (Field); 727 } 728 729 730 /******************************************************************************* 731 * 732 * FUNCTION: AcpiPsGetNextArg 733 * 734 * PARAMETERS: WalkState - Current state 735 * ParserState - Current parser state object 736 * ArgType - The argument type (AML_*_ARG) 737 * ReturnArg - Where the next arg is returned 738 * 739 * RETURN: Status, and an op object containing the next argument. 740 * 741 * DESCRIPTION: Get next argument (including complex list arguments that require 742 * pushing the parser stack) 743 * 744 ******************************************************************************/ 745 746 ACPI_STATUS 747 AcpiPsGetNextArg ( 748 ACPI_WALK_STATE *WalkState, 749 ACPI_PARSE_STATE *ParserState, 750 UINT32 ArgType, 751 ACPI_PARSE_OBJECT **ReturnArg) 752 { 753 ACPI_PARSE_OBJECT *Arg = NULL; 754 ACPI_PARSE_OBJECT *Prev = NULL; 755 ACPI_PARSE_OBJECT *Field; 756 UINT32 Subop; 757 ACPI_STATUS Status = AE_OK; 758 759 760 ACPI_FUNCTION_TRACE_PTR (PsGetNextArg, ParserState); 761 762 763 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 764 "Expected argument type ARGP: %s (%2.2X)\n", 765 AcpiUtGetArgumentTypeName (ArgType), ArgType)); 766 767 switch (ArgType) 768 { 769 case ARGP_BYTEDATA: 770 case ARGP_WORDDATA: 771 case ARGP_DWORDDATA: 772 case ARGP_CHARLIST: 773 case ARGP_NAME: 774 case ARGP_NAMESTRING: 775 776 /* Constants, strings, and namestrings are all the same size */ 777 778 Arg = AcpiPsAllocOp (AML_BYTE_OP, ParserState->Aml); 779 if (!Arg) 780 { 781 return_ACPI_STATUS (AE_NO_MEMORY); 782 } 783 784 AcpiPsGetNextSimpleArg (ParserState, ArgType, Arg); 785 break; 786 787 case ARGP_PKGLENGTH: 788 789 /* Package length, nothing returned */ 790 791 ParserState->PkgEnd = AcpiPsGetNextPackageEnd (ParserState); 792 break; 793 794 case ARGP_FIELDLIST: 795 796 if (ParserState->Aml < ParserState->PkgEnd) 797 { 798 /* Non-empty list */ 799 800 while (ParserState->Aml < ParserState->PkgEnd) 801 { 802 Field = AcpiPsGetNextField (ParserState); 803 if (!Field) 804 { 805 return_ACPI_STATUS (AE_NO_MEMORY); 806 } 807 808 if (Prev) 809 { 810 Prev->Common.Next = Field; 811 } 812 else 813 { 814 Arg = Field; 815 } 816 Prev = Field; 817 } 818 819 /* Skip to End of byte data */ 820 821 ParserState->Aml = ParserState->PkgEnd; 822 } 823 break; 824 825 case ARGP_BYTELIST: 826 827 if (ParserState->Aml < ParserState->PkgEnd) 828 { 829 /* Non-empty list */ 830 831 Arg = AcpiPsAllocOp (AML_INT_BYTELIST_OP, 832 ParserState->Aml); 833 if (!Arg) 834 { 835 return_ACPI_STATUS (AE_NO_MEMORY); 836 } 837 838 /* Fill in bytelist data */ 839 840 Arg->Common.Value.Size = (UINT32) 841 ACPI_PTR_DIFF (ParserState->PkgEnd, ParserState->Aml); 842 Arg->Named.Data = ParserState->Aml; 843 844 /* Skip to End of byte data */ 845 846 ParserState->Aml = ParserState->PkgEnd; 847 } 848 break; 849 850 case ARGP_SIMPLENAME: 851 case ARGP_NAME_OR_REF: 852 853 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 854 "**** SimpleName/NameOrRef: %s (%2.2X)\n", 855 AcpiUtGetArgumentTypeName (ArgType), ArgType)); 856 857 Subop = AcpiPsPeekOpcode (ParserState); 858 if (Subop == 0 || 859 AcpiPsIsLeadingChar (Subop) || 860 ACPI_IS_ROOT_PREFIX (Subop) || 861 ACPI_IS_PARENT_PREFIX (Subop)) 862 { 863 /* NullName or NameString */ 864 865 Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP, ParserState->Aml); 866 if (!Arg) 867 { 868 return_ACPI_STATUS (AE_NO_MEMORY); 869 } 870 871 Status = AcpiPsGetNextNamepath (WalkState, ParserState, 872 Arg, ACPI_NOT_METHOD_CALL); 873 } 874 else 875 { 876 /* Single complex argument, nothing returned */ 877 878 WalkState->ArgCount = 1; 879 } 880 break; 881 882 case ARGP_TARGET: 883 case ARGP_SUPERNAME: 884 885 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 886 "**** Target/Supername: %s (%2.2X)\n", 887 AcpiUtGetArgumentTypeName (ArgType), ArgType)); 888 889 Subop = AcpiPsPeekOpcode (ParserState); 890 if (Subop == 0) 891 { 892 /* NULL target (zero). Convert to a NULL namepath */ 893 894 Arg = AcpiPsAllocOp (AML_INT_NAMEPATH_OP, ParserState->Aml); 895 if (!Arg) 896 { 897 return_ACPI_STATUS (AE_NO_MEMORY); 898 } 899 900 Status = AcpiPsGetNextNamepath (WalkState, ParserState, 901 Arg, ACPI_POSSIBLE_METHOD_CALL); 902 } 903 else 904 { 905 /* Single complex argument, nothing returned */ 906 907 WalkState->ArgCount = 1; 908 } 909 break; 910 911 case ARGP_DATAOBJ: 912 case ARGP_TERMARG: 913 914 915 ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, 916 "**** TermArg/DataObj: %s (%2.2X)\n", 917 AcpiUtGetArgumentTypeName (ArgType), ArgType)); 918 919 /* Single complex argument, nothing returned */ 920 921 WalkState->ArgCount = 1; 922 break; 923 924 case ARGP_DATAOBJLIST: 925 case ARGP_TERMLIST: 926 case ARGP_OBJLIST: 927 928 if (ParserState->Aml < ParserState->PkgEnd) 929 { 930 /* Non-empty list of variable arguments, nothing returned */ 931 932 WalkState->ArgCount = ACPI_VAR_ARGS; 933 } 934 break; 935 936 default: 937 938 ACPI_ERROR ((AE_INFO, "Invalid ArgType: 0x%X", ArgType)); 939 Status = AE_AML_OPERAND_TYPE; 940 break; 941 } 942 943 *ReturnArg = Arg; 944 return_ACPI_STATUS (Status); 945 } 946