1 /****************************************************************************** 2 * 3 * Module Name: asltransform - Parse tree transforms 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 "aslcompiler.h" 45 #include "aslcompiler.y.h" 46 47 #define _COMPONENT ACPI_COMPILER 48 ACPI_MODULE_NAME ("asltransform") 49 50 /* Local prototypes */ 51 52 static void 53 TrTransformSubtree ( 54 ACPI_PARSE_OBJECT *Op); 55 56 static char * 57 TrAmlGetNextTempName ( 58 ACPI_PARSE_OBJECT *Op, 59 UINT8 *TempCount); 60 61 static void 62 TrAmlInitLineNumbers ( 63 ACPI_PARSE_OBJECT *Op, 64 ACPI_PARSE_OBJECT *Neighbor); 65 66 static void 67 TrAmlInitNode ( 68 ACPI_PARSE_OBJECT *Op, 69 UINT16 ParseOpcode); 70 71 static void 72 TrAmlSetSubtreeParent ( 73 ACPI_PARSE_OBJECT *Op, 74 ACPI_PARSE_OBJECT *Parent); 75 76 static void 77 TrAmlInsertPeer ( 78 ACPI_PARSE_OBJECT *Op, 79 ACPI_PARSE_OBJECT *NewPeer); 80 81 static void 82 TrDoDefinitionBlock ( 83 ACPI_PARSE_OBJECT *Op); 84 85 static void 86 TrDoSwitch ( 87 ACPI_PARSE_OBJECT *StartNode); 88 89 90 /******************************************************************************* 91 * 92 * FUNCTION: TrAmlGetNextTempName 93 * 94 * PARAMETERS: Op - Current parse op 95 * TempCount - Current temporary counter. Was originally 96 * per-module; Currently per method, could be 97 * expanded to per-scope. 98 * 99 * RETURN: A pointer to name (allocated here). 100 * 101 * DESCRIPTION: Generate an ACPI name of the form _T_x. These names are 102 * reserved for use by the ASL compiler. (_T_0 through _T_Z) 103 * 104 ******************************************************************************/ 105 106 static char * 107 TrAmlGetNextTempName ( 108 ACPI_PARSE_OBJECT *Op, 109 UINT8 *TempCount) 110 { 111 char *TempName; 112 113 114 if (*TempCount >= (10 + 26)) /* 0-35 valid: 0-9 and A-Z for TempName[3] */ 115 { 116 /* Too many temps */ 117 118 AslError (ASL_ERROR, ASL_MSG_TOO_MANY_TEMPS, Op, NULL); 119 return (NULL); 120 } 121 122 TempName = UtLocalCalloc (5); 123 124 if (*TempCount < 10) /* 0-9 */ 125 { 126 TempName[3] = (char) (*TempCount + '0'); 127 } 128 else /* 10-35: A-Z */ 129 { 130 TempName[3] = (char) (*TempCount + ('A' - 10)); 131 } 132 133 (*TempCount)++; 134 135 /* First three characters are always "_T_" */ 136 137 TempName[0] = '_'; 138 TempName[1] = 'T'; 139 TempName[2] = '_'; 140 141 return (TempName); 142 } 143 144 145 /******************************************************************************* 146 * 147 * FUNCTION: TrAmlInitLineNumbers 148 * 149 * PARAMETERS: Op - Op to be initialized 150 * Neighbor - Op used for initialization values 151 * 152 * RETURN: None 153 * 154 * DESCRIPTION: Initialized the various line numbers for a parse node. 155 * 156 ******************************************************************************/ 157 158 static void 159 TrAmlInitLineNumbers ( 160 ACPI_PARSE_OBJECT *Op, 161 ACPI_PARSE_OBJECT *Neighbor) 162 { 163 164 Op->Asl.EndLine = Neighbor->Asl.EndLine; 165 Op->Asl.EndLogicalLine = Neighbor->Asl.EndLogicalLine; 166 Op->Asl.LineNumber = Neighbor->Asl.LineNumber; 167 Op->Asl.LogicalByteOffset = Neighbor->Asl.LogicalByteOffset; 168 Op->Asl.LogicalLineNumber = Neighbor->Asl.LogicalLineNumber; 169 } 170 171 172 /******************************************************************************* 173 * 174 * FUNCTION: TrAmlInitNode 175 * 176 * PARAMETERS: Op - Op to be initialized 177 * ParseOpcode - Opcode for this node 178 * 179 * RETURN: None 180 * 181 * DESCRIPTION: Initialize a node with the parse opcode and opcode name. 182 * 183 ******************************************************************************/ 184 185 static void 186 TrAmlInitNode ( 187 ACPI_PARSE_OBJECT *Op, 188 UINT16 ParseOpcode) 189 { 190 191 Op->Asl.ParseOpcode = ParseOpcode; 192 UtSetParseOpName (Op); 193 } 194 195 196 /******************************************************************************* 197 * 198 * FUNCTION: TrAmlSetSubtreeParent 199 * 200 * PARAMETERS: Op - First node in a list of peer nodes 201 * Parent - Parent of the subtree 202 * 203 * RETURN: None 204 * 205 * DESCRIPTION: Set the parent for all peer nodes in a subtree 206 * 207 ******************************************************************************/ 208 209 static void 210 TrAmlSetSubtreeParent ( 211 ACPI_PARSE_OBJECT *Op, 212 ACPI_PARSE_OBJECT *Parent) 213 { 214 ACPI_PARSE_OBJECT *Next; 215 216 217 Next = Op; 218 while (Next) 219 { 220 Next->Asl.Parent = Parent; 221 Next = Next->Asl.Next; 222 } 223 } 224 225 226 /******************************************************************************* 227 * 228 * FUNCTION: TrAmlInsertPeer 229 * 230 * PARAMETERS: Op - First node in a list of peer nodes 231 * NewPeer - Peer node to insert 232 * 233 * RETURN: None 234 * 235 * DESCRIPTION: Insert a new peer node into a list of peers. 236 * 237 ******************************************************************************/ 238 239 static void 240 TrAmlInsertPeer ( 241 ACPI_PARSE_OBJECT *Op, 242 ACPI_PARSE_OBJECT *NewPeer) 243 { 244 245 NewPeer->Asl.Next = Op->Asl.Next; 246 Op->Asl.Next = NewPeer; 247 } 248 249 250 /******************************************************************************* 251 * 252 * FUNCTION: TrAmlTransformWalkBegin 253 * 254 * PARAMETERS: ASL_WALK_CALLBACK 255 * 256 * RETURN: None 257 * 258 * DESCRIPTION: Parse tree walk to generate both the AML opcodes and the AML 259 * operands. 260 * 261 ******************************************************************************/ 262 263 ACPI_STATUS 264 TrAmlTransformWalkBegin ( 265 ACPI_PARSE_OBJECT *Op, 266 UINT32 Level, 267 void *Context) 268 { 269 270 TrTransformSubtree (Op); 271 return (AE_OK); 272 } 273 274 275 /******************************************************************************* 276 * 277 * FUNCTION: TrAmlTransformWalkEnd 278 * 279 * PARAMETERS: ASL_WALK_CALLBACK 280 * 281 * RETURN: None 282 * 283 * DESCRIPTION: Parse tree walk to generate both the AML opcodes and the AML 284 * operands. 285 * 286 ******************************************************************************/ 287 288 ACPI_STATUS 289 TrAmlTransformWalkEnd ( 290 ACPI_PARSE_OBJECT *Op, 291 UINT32 Level, 292 void *Context) 293 { 294 295 /* Save possible Externals list in the DefintionBlock Op */ 296 297 if (Op->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK) 298 { 299 Op->Asl.Value.Arg = Gbl_ExternalsListHead; 300 Gbl_ExternalsListHead = NULL; 301 } 302 303 return (AE_OK); 304 } 305 306 307 /******************************************************************************* 308 * 309 * FUNCTION: TrTransformSubtree 310 * 311 * PARAMETERS: Op - The parent parse node 312 * 313 * RETURN: None 314 * 315 * DESCRIPTION: Prepare nodes to be output as AML data and operands. The more 316 * complex AML opcodes require processing of the child nodes 317 * (arguments/operands). 318 * 319 ******************************************************************************/ 320 321 static void 322 TrTransformSubtree ( 323 ACPI_PARSE_OBJECT *Op) 324 { 325 326 if (Op->Asl.AmlOpcode == AML_RAW_DATA_BYTE) 327 { 328 return; 329 } 330 331 switch (Op->Asl.ParseOpcode) 332 { 333 case PARSEOP_DEFINITION_BLOCK: 334 335 TrDoDefinitionBlock (Op); 336 break; 337 338 case PARSEOP_SWITCH: 339 340 TrDoSwitch (Op); 341 break; 342 343 case PARSEOP_METHOD: 344 /* 345 * TBD: Zero the tempname (_T_x) count. Probably shouldn't be a global, 346 * however 347 */ 348 Gbl_TempCount = 0; 349 break; 350 351 case PARSEOP_EXTERNAL: 352 353 ExDoExternal (Op); 354 break; 355 356 default: 357 358 /* Nothing to do here for other opcodes */ 359 360 break; 361 } 362 } 363 364 365 /******************************************************************************* 366 * 367 * FUNCTION: TrDoDefinitionBlock 368 * 369 * PARAMETERS: Op - Parse node 370 * 371 * RETURN: None 372 * 373 * DESCRIPTION: Find the end of the definition block and set a global to this 374 * node. It is used by the compiler to insert compiler-generated 375 * names at the root level of the namespace. 376 * 377 ******************************************************************************/ 378 379 static void 380 TrDoDefinitionBlock ( 381 ACPI_PARSE_OBJECT *Op) 382 { 383 ACPI_PARSE_OBJECT *Next; 384 UINT32 i; 385 386 387 /* Reset external list when starting a definition block */ 388 389 Gbl_ExternalsListHead = NULL; 390 391 Next = Op->Asl.Child; 392 for (i = 0; i < 5; i++) 393 { 394 Next = Next->Asl.Next; 395 if (i == 0) 396 { 397 /* 398 * This is the table signature. Only the DSDT can be assumed 399 * to be at the root of the namespace; Therefore, namepath 400 * optimization can only be performed on the DSDT. 401 */ 402 if (!ACPI_COMPARE_NAME (Next->Asl.Value.String, ACPI_SIG_DSDT)) 403 { 404 Gbl_ReferenceOptimizationFlag = FALSE; 405 } 406 } 407 } 408 409 Gbl_FirstLevelInsertionNode = Next; 410 } 411 412 413 /******************************************************************************* 414 * 415 * FUNCTION: TrDoSwitch 416 * 417 * PARAMETERS: StartNode - Parse node for SWITCH 418 * 419 * RETURN: None 420 * 421 * DESCRIPTION: Translate ASL SWITCH statement to if/else pairs. There is 422 * no actual AML opcode for SWITCH -- it must be simulated. 423 * 424 ******************************************************************************/ 425 426 static void 427 TrDoSwitch ( 428 ACPI_PARSE_OBJECT *StartNode) 429 { 430 ACPI_PARSE_OBJECT *Next; 431 ACPI_PARSE_OBJECT *CaseOp = NULL; 432 ACPI_PARSE_OBJECT *CaseBlock = NULL; 433 ACPI_PARSE_OBJECT *DefaultOp = NULL; 434 ACPI_PARSE_OBJECT *CurrentParentNode; 435 ACPI_PARSE_OBJECT *Conditional = NULL; 436 ACPI_PARSE_OBJECT *Predicate; 437 ACPI_PARSE_OBJECT *Peer; 438 ACPI_PARSE_OBJECT *NewOp; 439 ACPI_PARSE_OBJECT *NewOp2; 440 ACPI_PARSE_OBJECT *MethodOp; 441 ACPI_PARSE_OBJECT *StoreOp; 442 ACPI_PARSE_OBJECT *BreakOp; 443 ACPI_PARSE_OBJECT *BufferOp; 444 char *PredicateValueName; 445 UINT16 Index; 446 UINT32 Btype; 447 448 449 /* Start node is the Switch() node */ 450 451 CurrentParentNode = StartNode; 452 453 /* Create a new temp name of the form _T_x */ 454 455 PredicateValueName = TrAmlGetNextTempName (StartNode, &Gbl_TempCount); 456 if (!PredicateValueName) 457 { 458 return; 459 } 460 461 /* First child is the Switch() predicate */ 462 463 Next = StartNode->Asl.Child; 464 465 /* 466 * Examine the return type of the Switch Value - 467 * must be Integer/Buffer/String 468 */ 469 Index = (UINT16) (Next->Asl.ParseOpcode - ASL_PARSE_OPCODE_BASE); 470 Btype = AslKeywordMapping[Index].AcpiBtype; 471 if ((Btype != ACPI_BTYPE_INTEGER) && 472 (Btype != ACPI_BTYPE_STRING) && 473 (Btype != ACPI_BTYPE_BUFFER)) 474 { 475 AslError (ASL_WARNING, ASL_MSG_SWITCH_TYPE, Next, NULL); 476 Btype = ACPI_BTYPE_INTEGER; 477 } 478 479 /* CASE statements start at next child */ 480 481 Peer = Next->Asl.Next; 482 while (Peer) 483 { 484 Next = Peer; 485 Peer = Next->Asl.Next; 486 487 if (Next->Asl.ParseOpcode == PARSEOP_CASE) 488 { 489 if (CaseOp) 490 { 491 /* Add an ELSE to complete the previous CASE */ 492 493 NewOp = TrCreateLeafNode (PARSEOP_ELSE); 494 NewOp->Asl.Parent = Conditional->Asl.Parent; 495 TrAmlInitLineNumbers (NewOp, NewOp->Asl.Parent); 496 497 /* Link ELSE node as a peer to the previous IF */ 498 499 TrAmlInsertPeer (Conditional, NewOp); 500 CurrentParentNode = NewOp; 501 } 502 503 CaseOp = Next; 504 Conditional = CaseOp; 505 CaseBlock = CaseOp->Asl.Child->Asl.Next; 506 Conditional->Asl.Child->Asl.Next = NULL; 507 Predicate = CaseOp->Asl.Child; 508 509 if ((Predicate->Asl.ParseOpcode == PARSEOP_PACKAGE) || 510 (Predicate->Asl.ParseOpcode == PARSEOP_VAR_PACKAGE)) 511 { 512 /* 513 * Convert the package declaration to this form: 514 * 515 * If (LNotEqual (Match (Package(<size>){<data>}, 516 * MEQ, _T_x, MTR, Zero, Zero), Ones)) 517 */ 518 NewOp2 = TrCreateLeafNode (PARSEOP_MATCHTYPE_MEQ); 519 Predicate->Asl.Next = NewOp2; 520 TrAmlInitLineNumbers (NewOp2, Conditional); 521 522 NewOp = NewOp2; 523 NewOp2 = TrCreateValuedLeafNode (PARSEOP_NAMESTRING, 524 (UINT64) ACPI_TO_INTEGER (PredicateValueName)); 525 NewOp->Asl.Next = NewOp2; 526 TrAmlInitLineNumbers (NewOp2, Predicate); 527 528 NewOp = NewOp2; 529 NewOp2 = TrCreateLeafNode (PARSEOP_MATCHTYPE_MTR); 530 NewOp->Asl.Next = NewOp2; 531 TrAmlInitLineNumbers (NewOp2, Predicate); 532 533 NewOp = NewOp2; 534 NewOp2 = TrCreateLeafNode (PARSEOP_ZERO); 535 NewOp->Asl.Next = NewOp2; 536 TrAmlInitLineNumbers (NewOp2, Predicate); 537 538 NewOp = NewOp2; 539 NewOp2 = TrCreateLeafNode (PARSEOP_ZERO); 540 NewOp->Asl.Next = NewOp2; 541 TrAmlInitLineNumbers (NewOp2, Predicate); 542 543 NewOp2 = TrCreateLeafNode (PARSEOP_MATCH); 544 NewOp2->Asl.Child = Predicate; /* PARSEOP_PACKAGE */ 545 TrAmlInitLineNumbers (NewOp2, Conditional); 546 TrAmlSetSubtreeParent (Predicate, NewOp2); 547 548 NewOp = NewOp2; 549 NewOp2 = TrCreateLeafNode (PARSEOP_ONES); 550 NewOp->Asl.Next = NewOp2; 551 TrAmlInitLineNumbers (NewOp2, Conditional); 552 553 NewOp2 = TrCreateLeafNode (PARSEOP_LEQUAL); 554 NewOp2->Asl.Child = NewOp; 555 NewOp->Asl.Parent = NewOp2; 556 TrAmlInitLineNumbers (NewOp2, Conditional); 557 TrAmlSetSubtreeParent (NewOp, NewOp2); 558 559 NewOp = NewOp2; 560 NewOp2 = TrCreateLeafNode (PARSEOP_LNOT); 561 NewOp2->Asl.Child = NewOp; 562 NewOp2->Asl.Parent = Conditional; 563 NewOp->Asl.Parent = NewOp2; 564 TrAmlInitLineNumbers (NewOp2, Conditional); 565 566 Conditional->Asl.Child = NewOp2; 567 NewOp2->Asl.Next = CaseBlock; 568 } 569 else 570 { 571 /* 572 * Integer and Buffer case. 573 * 574 * Change CaseOp() to: If (LEqual (SwitchValue, CaseValue)) {...} 575 * Note: SwitchValue is first to allow the CaseValue to be implicitly 576 * converted to the type of SwitchValue if necessary. 577 * 578 * CaseOp->Child is the case value 579 * CaseOp->Child->Peer is the beginning of the case block 580 */ 581 NewOp = TrCreateValuedLeafNode (PARSEOP_NAMESTRING, 582 (UINT64) ACPI_TO_INTEGER (PredicateValueName)); 583 NewOp->Asl.Next = Predicate; 584 TrAmlInitLineNumbers (NewOp, Predicate); 585 586 NewOp2 = TrCreateLeafNode (PARSEOP_LEQUAL); 587 NewOp2->Asl.Parent = Conditional; 588 NewOp2->Asl.Child = NewOp; 589 TrAmlInitLineNumbers (NewOp2, Conditional); 590 591 TrAmlSetSubtreeParent (NewOp, NewOp2); 592 593 Predicate = NewOp2; 594 Predicate->Asl.Next = CaseBlock; 595 596 TrAmlSetSubtreeParent (Predicate, Conditional); 597 Conditional->Asl.Child = Predicate; 598 } 599 600 /* Reinitialize the CASE node to an IF node */ 601 602 TrAmlInitNode (Conditional, PARSEOP_IF); 603 604 /* 605 * The first CASE(IF) is not nested under an ELSE. 606 * All other CASEs are children of a parent ELSE. 607 */ 608 if (CurrentParentNode == StartNode) 609 { 610 Conditional->Asl.Next = NULL; 611 } 612 else 613 { 614 /* 615 * The IF is a child of previous IF/ELSE. It 616 * is therefore without peer. 617 */ 618 CurrentParentNode->Asl.Child = Conditional; 619 Conditional->Asl.Parent = CurrentParentNode; 620 Conditional->Asl.Next = NULL; 621 } 622 } 623 else if (Next->Asl.ParseOpcode == PARSEOP_DEFAULT) 624 { 625 if (DefaultOp) 626 { 627 /* 628 * More than one Default 629 * (Parser does not catch this, must check here) 630 */ 631 AslError (ASL_ERROR, ASL_MSG_MULTIPLE_DEFAULT, Next, NULL); 632 } 633 else 634 { 635 /* Save the DEFAULT node for later, after CASEs */ 636 637 DefaultOp = Next; 638 } 639 } 640 else 641 { 642 /* Unknown peer opcode */ 643 644 AcpiOsPrintf ("Unknown parse opcode for switch statement: %s (%u)\n", 645 Next->Asl.ParseOpName, Next->Asl.ParseOpcode); 646 } 647 } 648 649 /* Add the default case at the end of the if/else construct */ 650 651 if (DefaultOp) 652 { 653 /* If no CASE statements, this is an error - see below */ 654 655 if (CaseOp) 656 { 657 /* Convert the DEFAULT node to an ELSE */ 658 659 TrAmlInitNode (DefaultOp, PARSEOP_ELSE); 660 DefaultOp->Asl.Parent = Conditional->Asl.Parent; 661 662 /* Link ELSE node as a peer to the previous IF */ 663 664 TrAmlInsertPeer (Conditional, DefaultOp); 665 } 666 } 667 668 if (!CaseOp) 669 { 670 AslError (ASL_ERROR, ASL_MSG_NO_CASES, StartNode, NULL); 671 } 672 673 674 /* 675 * Create a Name(_T_x, ...) statement. This statement must appear at the 676 * method level, in case a loop surrounds the switch statement and could 677 * cause the name to be created twice (error). 678 */ 679 680 /* Create the Name node */ 681 682 Predicate = StartNode->Asl.Child; 683 NewOp = TrCreateLeafNode (PARSEOP_NAME); 684 TrAmlInitLineNumbers (NewOp, StartNode); 685 686 /* Find the parent method */ 687 688 Next = StartNode; 689 while ((Next->Asl.ParseOpcode != PARSEOP_METHOD) && 690 (Next->Asl.ParseOpcode != PARSEOP_DEFINITION_BLOCK)) 691 { 692 Next = Next->Asl.Parent; 693 } 694 MethodOp = Next; 695 696 NewOp->Asl.CompileFlags |= NODE_COMPILER_EMITTED; 697 NewOp->Asl.Parent = Next; 698 699 /* Insert name after the method name and arguments */ 700 701 Next = Next->Asl.Child; /* Name */ 702 Next = Next->Asl.Next; /* NumArgs */ 703 Next = Next->Asl.Next; /* SerializeRule */ 704 705 /* 706 * If method is not Serialized, we must make is so, because of the way 707 * that Switch() must be implemented -- we cannot allow multiple threads 708 * to execute this method concurrently since we need to create local 709 * temporary name(s). 710 */ 711 if (Next->Asl.ParseOpcode != PARSEOP_SERIALIZERULE_SERIAL) 712 { 713 AslError (ASL_REMARK, ASL_MSG_SERIALIZED, MethodOp, 714 "Due to use of Switch operator"); 715 Next->Asl.ParseOpcode = PARSEOP_SERIALIZERULE_SERIAL; 716 } 717 718 Next = Next->Asl.Next; /* SyncLevel */ 719 Next = Next->Asl.Next; /* ReturnType */ 720 Next = Next->Asl.Next; /* ParameterTypes */ 721 722 TrAmlInsertPeer (Next, NewOp); 723 TrAmlInitLineNumbers (NewOp, Next); 724 725 /* Create the NameSeg child for the Name node */ 726 727 NewOp2 = TrCreateValuedLeafNode (PARSEOP_NAMESEG, 728 (UINT64) ACPI_TO_INTEGER (PredicateValueName)); 729 TrAmlInitLineNumbers (NewOp2, NewOp); 730 NewOp2->Asl.CompileFlags |= NODE_IS_NAME_DECLARATION; 731 NewOp->Asl.Child = NewOp2; 732 733 /* Create the initial value for the Name. Btype was already validated above */ 734 735 switch (Btype) 736 { 737 case ACPI_BTYPE_INTEGER: 738 739 NewOp2->Asl.Next = TrCreateValuedLeafNode (PARSEOP_ZERO, 740 (UINT64) 0); 741 TrAmlInitLineNumbers (NewOp2->Asl.Next, NewOp); 742 break; 743 744 case ACPI_BTYPE_STRING: 745 746 NewOp2->Asl.Next = TrCreateValuedLeafNode (PARSEOP_STRING_LITERAL, 747 (UINT64) ACPI_TO_INTEGER ("")); 748 TrAmlInitLineNumbers (NewOp2->Asl.Next, NewOp); 749 break; 750 751 case ACPI_BTYPE_BUFFER: 752 753 (void) TrLinkPeerNode (NewOp2, TrCreateValuedLeafNode (PARSEOP_BUFFER, 754 (UINT64) 0)); 755 Next = NewOp2->Asl.Next; 756 TrAmlInitLineNumbers (Next, NewOp2); 757 (void) TrLinkChildren (Next, 1, TrCreateValuedLeafNode (PARSEOP_ZERO, 758 (UINT64) 1)); 759 TrAmlInitLineNumbers (Next->Asl.Child, Next); 760 761 BufferOp = TrCreateValuedLeafNode (PARSEOP_DEFAULT_ARG, (UINT64) 0); 762 TrAmlInitLineNumbers (BufferOp, Next->Asl.Child); 763 (void) TrLinkPeerNode (Next->Asl.Child, BufferOp); 764 765 TrAmlSetSubtreeParent (Next->Asl.Child, Next); 766 break; 767 768 default: 769 770 break; 771 } 772 773 TrAmlSetSubtreeParent (NewOp2, NewOp); 774 775 /* 776 * Transform the Switch() into a While(One)-Break node. 777 * And create a Store() node which will be used to save the 778 * Switch() value. The store is of the form: Store (Value, _T_x) 779 * where _T_x is the temp variable. 780 */ 781 TrAmlInitNode (StartNode, PARSEOP_WHILE); 782 NewOp = TrCreateLeafNode (PARSEOP_ONE); 783 TrAmlInitLineNumbers (NewOp, StartNode); 784 NewOp->Asl.Next = Predicate->Asl.Next; 785 NewOp->Asl.Parent = StartNode; 786 StartNode->Asl.Child = NewOp; 787 788 /* Create a Store() node */ 789 790 StoreOp = TrCreateLeafNode (PARSEOP_STORE); 791 TrAmlInitLineNumbers (StoreOp, NewOp); 792 StoreOp->Asl.Parent = StartNode; 793 TrAmlInsertPeer (NewOp, StoreOp); 794 795 /* Complete the Store subtree */ 796 797 StoreOp->Asl.Child = Predicate; 798 Predicate->Asl.Parent = StoreOp; 799 800 NewOp = TrCreateValuedLeafNode (PARSEOP_NAMESEG, 801 (UINT64) ACPI_TO_INTEGER (PredicateValueName)); 802 TrAmlInitLineNumbers (NewOp, StoreOp); 803 NewOp->Asl.Parent = StoreOp; 804 Predicate->Asl.Next = NewOp; 805 806 /* Create a Break() node and insert it into the end of While() */ 807 808 Conditional = StartNode->Asl.Child; 809 while (Conditional->Asl.Next) 810 { 811 Conditional = Conditional->Asl.Next; 812 } 813 814 BreakOp = TrCreateLeafNode (PARSEOP_BREAK); 815 TrAmlInitLineNumbers (BreakOp, NewOp); 816 BreakOp->Asl.Parent = StartNode; 817 TrAmlInsertPeer (Conditional, BreakOp); 818 } 819