1 /******************************************************************************* 2 * 3 * Module Name: dmopcode - AML disassembler, specific AML opcodes 4 * 5 ******************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2021, 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 "acpi.h" 153 #include "accommon.h" 154 #include "acparser.h" 155 #include "amlcode.h" 156 #include "acinterp.h" 157 #include "acnamesp.h" 158 #include "acdebug.h" 159 #include "acconvert.h" 160 161 #ifdef ACPI_DISASSEMBLER 162 163 #define _COMPONENT ACPI_CA_DEBUGGER 164 ACPI_MODULE_NAME ("dmopcode") 165 166 167 /* Local prototypes */ 168 169 static void 170 AcpiDmMatchKeyword ( 171 ACPI_PARSE_OBJECT *Op); 172 173 static void 174 AcpiDmConvertToElseIf ( 175 ACPI_PARSE_OBJECT *Op); 176 177 static void 178 AcpiDmPromoteSubtree ( 179 ACPI_PARSE_OBJECT *StartOp); 180 181 /******************************************************************************* 182 * 183 * FUNCTION: AcpiDmDisplayTargetPathname 184 * 185 * PARAMETERS: Op - Parse object 186 * 187 * RETURN: None 188 * 189 * DESCRIPTION: For AML opcodes that have a target operand, display the full 190 * pathname for the target, in a comment field. Handles Return() 191 * statements also. 192 * 193 ******************************************************************************/ 194 195 void 196 AcpiDmDisplayTargetPathname ( 197 ACPI_PARSE_OBJECT *Op) 198 { 199 ACPI_PARSE_OBJECT *NextOp; 200 ACPI_PARSE_OBJECT *PrevOp = NULL; 201 char *Pathname; 202 const ACPI_OPCODE_INFO *OpInfo; 203 204 205 if (Op->Common.AmlOpcode == AML_RETURN_OP) 206 { 207 PrevOp = Op->Asl.Value.Arg; 208 } 209 else 210 { 211 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 212 if (!(OpInfo->Flags & AML_HAS_TARGET)) 213 { 214 return; 215 } 216 217 /* Target is the last Op in the arg list */ 218 219 NextOp = Op->Asl.Value.Arg; 220 while (NextOp) 221 { 222 PrevOp = NextOp; 223 NextOp = PrevOp->Asl.Next; 224 } 225 } 226 227 if (!PrevOp) 228 { 229 return; 230 } 231 232 /* We must have a namepath AML opcode */ 233 234 if (PrevOp->Asl.AmlOpcode != AML_INT_NAMEPATH_OP) 235 { 236 return; 237 } 238 239 /* A null string is the "no target specified" case */ 240 241 if (!PrevOp->Asl.Value.String) 242 { 243 return; 244 } 245 246 /* No node means "unresolved external reference" */ 247 248 if (!PrevOp->Asl.Node) 249 { 250 AcpiOsPrintf (" /* External reference */"); 251 return; 252 } 253 254 /* Ignore if path is already from the root */ 255 256 if (*PrevOp->Asl.Value.String == '\\') 257 { 258 return; 259 } 260 261 /* Now: we can get the full pathname */ 262 263 Pathname = AcpiNsGetExternalPathname (PrevOp->Asl.Node); 264 if (!Pathname) 265 { 266 return; 267 } 268 269 AcpiOsPrintf (" /* %s */", Pathname); 270 ACPI_FREE (Pathname); 271 } 272 273 274 /******************************************************************************* 275 * 276 * FUNCTION: AcpiDmNotifyDescription 277 * 278 * PARAMETERS: Op - Name() parse object 279 * 280 * RETURN: None 281 * 282 * DESCRIPTION: Emit a description comment for the value associated with a 283 * Notify() operator. 284 * 285 ******************************************************************************/ 286 287 void 288 AcpiDmNotifyDescription ( 289 ACPI_PARSE_OBJECT *Op) 290 { 291 ACPI_PARSE_OBJECT *NextOp; 292 ACPI_NAMESPACE_NODE *Node; 293 UINT8 NotifyValue; 294 UINT8 Type = ACPI_TYPE_ANY; 295 296 297 /* The notify value is the second argument */ 298 299 NextOp = Op->Asl.Value.Arg; 300 NextOp = NextOp->Asl.Next; 301 302 switch (NextOp->Common.AmlOpcode) 303 { 304 case AML_ZERO_OP: 305 case AML_ONE_OP: 306 307 NotifyValue = (UINT8) NextOp->Common.AmlOpcode; 308 break; 309 310 case AML_BYTE_OP: 311 312 NotifyValue = (UINT8) NextOp->Asl.Value.Integer; 313 break; 314 315 default: 316 return; 317 } 318 319 /* 320 * Attempt to get the namespace node so we can determine the object type. 321 * Some notify values are dependent on the object type (Device, Thermal, 322 * or Processor). 323 */ 324 Node = Op->Asl.Node; 325 if (Node) 326 { 327 Type = Node->Type; 328 } 329 330 AcpiOsPrintf (" // %s", AcpiUtGetNotifyName (NotifyValue, Type)); 331 } 332 333 334 /******************************************************************************* 335 * 336 * FUNCTION: AcpiDmPredefinedDescription 337 * 338 * PARAMETERS: Op - Name() parse object 339 * 340 * RETURN: None 341 * 342 * DESCRIPTION: Emit a description comment for a predefined ACPI name. 343 * Used for iASL compiler only. 344 * 345 ******************************************************************************/ 346 347 void 348 AcpiDmPredefinedDescription ( 349 ACPI_PARSE_OBJECT *Op) 350 { 351 #ifdef ACPI_ASL_COMPILER 352 const AH_PREDEFINED_NAME *Info; 353 char *NameString; 354 int LastCharIsDigit; 355 int LastCharsAreHex; 356 357 358 if (!Op) 359 { 360 return; 361 } 362 363 /* Ensure that the comment field is emitted only once */ 364 365 if (Op->Common.DisasmFlags & ACPI_PARSEOP_PREDEFINED_CHECKED) 366 { 367 return; 368 } 369 Op->Common.DisasmFlags |= ACPI_PARSEOP_PREDEFINED_CHECKED; 370 371 /* Predefined name must start with an underscore */ 372 373 NameString = ACPI_CAST_PTR (char, &Op->Named.Name); 374 if (NameString[0] != '_') 375 { 376 return; 377 } 378 379 /* 380 * Check for the special ACPI names: 381 * _ACd, _ALd, _EJd, _Exx, _Lxx, _Qxx, _Wxx, _T_a 382 * (where d=decimal_digit, x=hex_digit, a=anything) 383 * 384 * Convert these to the generic name for table lookup. 385 * Note: NameString is guaranteed to be upper case here. 386 */ 387 LastCharIsDigit = 388 (isdigit ((int) NameString[3])); /* d */ 389 LastCharsAreHex = 390 (isxdigit ((int) NameString[2]) && /* xx */ 391 isxdigit ((int) NameString[3])); 392 393 switch (NameString[1]) 394 { 395 case 'A': 396 397 if ((NameString[2] == 'C') && (LastCharIsDigit)) 398 { 399 NameString = "_ACx"; 400 } 401 else if ((NameString[2] == 'L') && (LastCharIsDigit)) 402 { 403 NameString = "_ALx"; 404 } 405 break; 406 407 case 'E': 408 409 if ((NameString[2] == 'J') && (LastCharIsDigit)) 410 { 411 NameString = "_EJx"; 412 } 413 else if (LastCharsAreHex) 414 { 415 NameString = "_Exx"; 416 } 417 break; 418 419 case 'L': 420 421 if (LastCharsAreHex) 422 { 423 NameString = "_Lxx"; 424 } 425 break; 426 427 case 'Q': 428 429 if (LastCharsAreHex) 430 { 431 NameString = "_Qxx"; 432 } 433 break; 434 435 case 'T': 436 437 if (NameString[2] == '_') 438 { 439 NameString = "_T_x"; 440 } 441 break; 442 443 case 'W': 444 445 if (LastCharsAreHex) 446 { 447 NameString = "_Wxx"; 448 } 449 break; 450 451 default: 452 453 break; 454 } 455 456 /* Match the name in the info table */ 457 458 Info = AcpiAhMatchPredefinedName (NameString); 459 if (Info) 460 { 461 AcpiOsPrintf (" // %4.4s: %s", 462 NameString, ACPI_CAST_PTR (char, Info->Description)); 463 } 464 465 #endif 466 return; 467 } 468 469 470 /******************************************************************************* 471 * 472 * FUNCTION: AcpiDmFieldPredefinedDescription 473 * 474 * PARAMETERS: Op - Parse object 475 * 476 * RETURN: None 477 * 478 * DESCRIPTION: Emit a description comment for a resource descriptor tag 479 * (which is a predefined ACPI name.) Used for iASL compiler only. 480 * 481 ******************************************************************************/ 482 483 void 484 AcpiDmFieldPredefinedDescription ( 485 ACPI_PARSE_OBJECT *Op) 486 { 487 #ifdef ACPI_ASL_COMPILER 488 ACPI_PARSE_OBJECT *IndexOp; 489 char *Tag; 490 const ACPI_OPCODE_INFO *OpInfo; 491 const AH_PREDEFINED_NAME *Info; 492 493 494 if (!Op) 495 { 496 return; 497 } 498 499 /* Ensure that the comment field is emitted only once */ 500 501 if (Op->Common.DisasmFlags & ACPI_PARSEOP_PREDEFINED_CHECKED) 502 { 503 return; 504 } 505 Op->Common.DisasmFlags |= ACPI_PARSEOP_PREDEFINED_CHECKED; 506 507 /* 508 * Op must be one of the Create* operators: CreateField, CreateBitField, 509 * CreateByteField, CreateWordField, CreateDwordField, CreateQwordField 510 */ 511 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 512 if (!(OpInfo->Flags & AML_CREATE)) 513 { 514 return; 515 } 516 517 /* Second argument is the Index argument */ 518 519 IndexOp = Op->Common.Value.Arg; 520 IndexOp = IndexOp->Common.Next; 521 522 /* Index argument must be a namepath */ 523 524 if (IndexOp->Common.AmlOpcode != AML_INT_NAMEPATH_OP) 525 { 526 return; 527 } 528 529 /* Major cheat: We previously put the Tag ptr in the Node field */ 530 531 Tag = ACPI_CAST_PTR (char, IndexOp->Common.Node); 532 if (!Tag || (*Tag == 0)) 533 { 534 return; 535 } 536 537 /* Is the tag a predefined name? */ 538 539 Info = AcpiAhMatchPredefinedName (Tag); 540 if (!Info) 541 { 542 /* Not a predefined name (does not start with underscore) */ 543 544 return; 545 } 546 547 AcpiOsPrintf (" // %4.4s: %s", Tag, 548 ACPI_CAST_PTR (char, Info->Description)); 549 550 /* String contains the prefix path, free it */ 551 552 ACPI_FREE (IndexOp->Common.Value.String); 553 IndexOp->Common.Value.String = NULL; 554 #endif 555 556 return; 557 } 558 559 560 /******************************************************************************* 561 * 562 * FUNCTION: AcpiDmMethodFlags 563 * 564 * PARAMETERS: Op - Method Object to be examined 565 * 566 * RETURN: None 567 * 568 * DESCRIPTION: Decode control method flags 569 * 570 ******************************************************************************/ 571 572 void 573 AcpiDmMethodFlags ( 574 ACPI_PARSE_OBJECT *Op) 575 { 576 UINT32 Flags; 577 UINT32 Args; 578 579 580 /* The next Op contains the flags */ 581 582 Op = AcpiPsGetDepthNext (NULL, Op); 583 Flags = (UINT8) Op->Common.Value.Integer; 584 Args = Flags & 0x07; 585 586 /* Mark the Op as completed */ 587 588 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 589 590 /* 1) Method argument count */ 591 592 AcpiOsPrintf (", %u, ", Args); 593 594 /* 2) Serialize rule */ 595 596 if (!(Flags & 0x08)) 597 { 598 AcpiOsPrintf ("Not"); 599 } 600 601 AcpiOsPrintf ("Serialized"); 602 603 /* 3) SyncLevel */ 604 605 if (Flags & 0xF0) 606 { 607 AcpiOsPrintf (", %u", Flags >> 4); 608 } 609 } 610 611 612 /******************************************************************************* 613 * 614 * FUNCTION: AcpiDmFieldFlags 615 * 616 * PARAMETERS: Op - Field Object to be examined 617 * 618 * RETURN: None 619 * 620 * DESCRIPTION: Decode Field definition flags 621 * 622 ******************************************************************************/ 623 624 void 625 AcpiDmFieldFlags ( 626 ACPI_PARSE_OBJECT *Op) 627 { 628 UINT32 Flags; 629 630 631 Op = Op->Common.Next; 632 Flags = (UINT8) Op->Common.Value.Integer; 633 634 /* Mark the Op as completed */ 635 636 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 637 638 AcpiOsPrintf ("%s, ", AcpiGbl_AccessTypes [Flags & 0x07]); 639 AcpiOsPrintf ("%s, ", AcpiGbl_LockRule [(Flags & 0x10) >> 4]); 640 AcpiOsPrintf ("%s)", AcpiGbl_UpdateRules [(Flags & 0x60) >> 5]); 641 } 642 643 644 /******************************************************************************* 645 * 646 * FUNCTION: AcpiDmAddressSpace 647 * 648 * PARAMETERS: SpaceId - ID to be translated 649 * 650 * RETURN: None 651 * 652 * DESCRIPTION: Decode a SpaceId to an AddressSpaceKeyword 653 * 654 ******************************************************************************/ 655 656 void 657 AcpiDmAddressSpace ( 658 UINT8 SpaceId) 659 { 660 661 if (SpaceId >= ACPI_NUM_PREDEFINED_REGIONS) 662 { 663 if (SpaceId == 0x7F) 664 { 665 AcpiOsPrintf ("FFixedHW, "); 666 } 667 else 668 { 669 AcpiOsPrintf ("0x%.2X, ", SpaceId); 670 } 671 } 672 else 673 { 674 AcpiOsPrintf ("%s, ", AcpiGbl_RegionTypes [SpaceId]); 675 } 676 } 677 678 679 /******************************************************************************* 680 * 681 * FUNCTION: AcpiDmRegionFlags 682 * 683 * PARAMETERS: Op - Object to be examined 684 * 685 * RETURN: None 686 * 687 * DESCRIPTION: Decode OperationRegion flags 688 * 689 ******************************************************************************/ 690 691 void 692 AcpiDmRegionFlags ( 693 ACPI_PARSE_OBJECT *Op) 694 { 695 696 /* The next Op contains the SpaceId */ 697 698 Op = AcpiPsGetDepthNext (NULL, Op); 699 700 /* Mark the Op as completed */ 701 702 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 703 704 AcpiOsPrintf (", "); 705 AcpiDmAddressSpace ((UINT8) Op->Common.Value.Integer); 706 } 707 708 709 /******************************************************************************* 710 * 711 * FUNCTION: AcpiDmMatchOp 712 * 713 * PARAMETERS: Op - Match Object to be examined 714 * 715 * RETURN: None 716 * 717 * DESCRIPTION: Decode Match opcode operands 718 * 719 ******************************************************************************/ 720 721 void 722 AcpiDmMatchOp ( 723 ACPI_PARSE_OBJECT *Op) 724 { 725 ACPI_PARSE_OBJECT *NextOp; 726 727 728 NextOp = AcpiPsGetDepthNext (NULL, Op); 729 NextOp = NextOp->Common.Next; 730 731 if (!NextOp) 732 { 733 /* Handle partial tree during single-step */ 734 735 return; 736 } 737 738 /* Mark the two nodes that contain the encoding for the match keywords */ 739 740 NextOp->Common.DisasmOpcode = ACPI_DASM_MATCHOP; 741 742 NextOp = NextOp->Common.Next; 743 NextOp = NextOp->Common.Next; 744 NextOp->Common.DisasmOpcode = ACPI_DASM_MATCHOP; 745 } 746 747 748 /******************************************************************************* 749 * 750 * FUNCTION: AcpiDmMatchKeyword 751 * 752 * PARAMETERS: Op - Match Object to be examined 753 * 754 * RETURN: None 755 * 756 * DESCRIPTION: Decode Match opcode operands 757 * 758 ******************************************************************************/ 759 760 static void 761 AcpiDmMatchKeyword ( 762 ACPI_PARSE_OBJECT *Op) 763 { 764 765 if (((UINT32) Op->Common.Value.Integer) > ACPI_MAX_MATCH_OPCODE) 766 { 767 AcpiOsPrintf ("/* Unknown Match Keyword encoding */"); 768 } 769 else 770 { 771 AcpiOsPrintf ("%s", 772 AcpiGbl_MatchOps[(ACPI_SIZE) Op->Common.Value.Integer]); 773 } 774 } 775 776 777 /******************************************************************************* 778 * 779 * FUNCTION: AcpiDmDisassembleOneOp 780 * 781 * PARAMETERS: WalkState - Current walk info 782 * Info - Parse tree walk info 783 * Op - Op that is to be printed 784 * 785 * RETURN: None 786 * 787 * DESCRIPTION: Disassemble a single AML opcode 788 * 789 ******************************************************************************/ 790 791 void 792 AcpiDmDisassembleOneOp ( 793 ACPI_WALK_STATE *WalkState, 794 ACPI_OP_WALK_INFO *Info, 795 ACPI_PARSE_OBJECT *Op) 796 { 797 const ACPI_OPCODE_INFO *OpInfo = NULL; 798 UINT32 Offset; 799 UINT32 Length; 800 ACPI_PARSE_OBJECT *Child; 801 ACPI_STATUS Status; 802 UINT8 *Aml; 803 const AH_DEVICE_ID *IdInfo; 804 805 806 if (!Op) 807 { 808 AcpiOsPrintf ("<NULL OP PTR>"); 809 return; 810 } 811 812 if (Op->Common.DisasmFlags & ACPI_PARSEOP_ELSEIF) 813 { 814 return; /* ElseIf macro was already emitted */ 815 } 816 817 switch (Op->Common.DisasmOpcode) 818 { 819 case ACPI_DASM_MATCHOP: 820 821 AcpiDmMatchKeyword (Op); 822 return; 823 824 case ACPI_DASM_LNOT_SUFFIX: 825 826 if (!AcpiGbl_CstyleDisassembly) 827 { 828 switch (Op->Common.AmlOpcode) 829 { 830 case AML_LOGICAL_EQUAL_OP: 831 AcpiOsPrintf ("LNotEqual"); 832 break; 833 834 case AML_LOGICAL_GREATER_OP: 835 AcpiOsPrintf ("LLessEqual"); 836 break; 837 838 case AML_LOGICAL_LESS_OP: 839 AcpiOsPrintf ("LGreaterEqual"); 840 break; 841 842 default: 843 break; 844 } 845 } 846 847 Op->Common.DisasmOpcode = 0; 848 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 849 return; 850 851 default: 852 break; 853 } 854 855 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 856 857 /* The op and arguments */ 858 859 switch (Op->Common.AmlOpcode) 860 { 861 case AML_LOGICAL_NOT_OP: 862 863 Child = Op->Common.Value.Arg; 864 if ((Child->Common.AmlOpcode == AML_LOGICAL_EQUAL_OP) || 865 (Child->Common.AmlOpcode == AML_LOGICAL_GREATER_OP) || 866 (Child->Common.AmlOpcode == AML_LOGICAL_LESS_OP)) 867 { 868 Child->Common.DisasmOpcode = ACPI_DASM_LNOT_SUFFIX; 869 Op->Common.DisasmOpcode = ACPI_DASM_LNOT_PREFIX; 870 } 871 else 872 { 873 AcpiOsPrintf ("%s", OpInfo->Name); 874 } 875 break; 876 877 case AML_BYTE_OP: 878 879 AcpiOsPrintf ("0x%2.2X", (UINT32) Op->Common.Value.Integer); 880 break; 881 882 case AML_WORD_OP: 883 884 if (Op->Common.DisasmOpcode == ACPI_DASM_EISAID) 885 { 886 AcpiDmDecompressEisaId ((UINT32) Op->Common.Value.Integer); 887 } 888 else 889 { 890 AcpiOsPrintf ("0x%4.4X", (UINT32) Op->Common.Value.Integer); 891 } 892 break; 893 894 case AML_DWORD_OP: 895 896 if (Op->Common.DisasmOpcode == ACPI_DASM_EISAID) 897 { 898 AcpiDmDecompressEisaId ((UINT32) Op->Common.Value.Integer); 899 } 900 else 901 { 902 AcpiOsPrintf ("0x%8.8X", (UINT32) Op->Common.Value.Integer); 903 } 904 break; 905 906 case AML_QWORD_OP: 907 908 AcpiOsPrintf ("0x%8.8X%8.8X", 909 ACPI_FORMAT_UINT64 (Op->Common.Value.Integer)); 910 break; 911 912 case AML_STRING_OP: 913 914 AcpiUtPrintString (Op->Common.Value.String, ACPI_UINT16_MAX); 915 916 /* For _HID/_CID strings, attempt to output a descriptive comment */ 917 918 if (Op->Common.DisasmOpcode == ACPI_DASM_HID_STRING) 919 { 920 /* If we know about the ID, emit the description */ 921 922 IdInfo = AcpiAhMatchHardwareId (Op->Common.Value.String); 923 if (IdInfo) 924 { 925 AcpiOsPrintf (" /* %s */", IdInfo->Description); 926 } 927 } 928 break; 929 930 case AML_BUFFER_OP: 931 /* 932 * Determine the type of buffer. We can have one of the following: 933 * 934 * 1) ResourceTemplate containing Resource Descriptors. 935 * 2) Unicode String buffer 936 * 3) ASCII String buffer 937 * 4) Raw data buffer (if none of the above) 938 * 939 * Since there are no special AML opcodes to differentiate these 940 * types of buffers, we have to closely look at the data in the 941 * buffer to determine the type. 942 */ 943 if (!AcpiGbl_NoResourceDisassembly) 944 { 945 Status = AcpiDmIsResourceTemplate (WalkState, Op); 946 if (ACPI_SUCCESS (Status)) 947 { 948 Op->Common.DisasmOpcode = ACPI_DASM_RESOURCE; 949 AcpiOsPrintf ("ResourceTemplate"); 950 break; 951 } 952 else if (Status == AE_AML_NO_RESOURCE_END_TAG) 953 { 954 AcpiOsPrintf ( 955 "/**** Is ResourceTemplate, " 956 "but EndTag not at buffer end ****/ "); 957 } 958 } 959 960 if (AcpiDmIsUuidBuffer (Op)) 961 { 962 Op->Common.DisasmOpcode = ACPI_DASM_UUID; 963 AcpiOsPrintf ("ToUUID ("); 964 } 965 else if (AcpiDmIsUnicodeBuffer (Op)) 966 { 967 Op->Common.DisasmOpcode = ACPI_DASM_UNICODE; 968 AcpiOsPrintf ("Unicode ("); 969 } 970 else if (AcpiDmIsStringBuffer (Op)) 971 { 972 Op->Common.DisasmOpcode = ACPI_DASM_STRING; 973 AcpiOsPrintf ("Buffer"); 974 } 975 else if (AcpiDmIsPldBuffer (Op)) 976 { 977 Op->Common.DisasmOpcode = ACPI_DASM_PLD_METHOD; 978 AcpiOsPrintf ("ToPLD ("); 979 } 980 else 981 { 982 Op->Common.DisasmOpcode = ACPI_DASM_BUFFER; 983 AcpiOsPrintf ("Buffer"); 984 } 985 break; 986 987 case AML_INT_NAMEPATH_OP: 988 989 AcpiDmNamestring (Op->Common.Value.Name); 990 break; 991 992 case AML_INT_NAMEDFIELD_OP: 993 994 Length = AcpiDmDumpName (Op->Named.Name); 995 996 AcpiOsPrintf (","); 997 ASL_CV_PRINT_ONE_COMMENT (Op, AML_NAMECOMMENT, NULL, 0); 998 AcpiOsPrintf ("%*.s %u", (unsigned) (5 - Length), " ", 999 (UINT32) Op->Common.Value.Integer); 1000 1001 AcpiDmCommaIfFieldMember (Op); 1002 1003 Info->BitOffset += (UINT32) Op->Common.Value.Integer; 1004 break; 1005 1006 case AML_INT_RESERVEDFIELD_OP: 1007 1008 /* Offset() -- Must account for previous offsets */ 1009 1010 Offset = (UINT32) Op->Common.Value.Integer; 1011 Info->BitOffset += Offset; 1012 1013 if (Info->BitOffset % 8 == 0) 1014 { 1015 AcpiOsPrintf ("Offset (0x%.2X)", ACPI_DIV_8 (Info->BitOffset)); 1016 } 1017 else 1018 { 1019 AcpiOsPrintf (" , %u", Offset); 1020 } 1021 1022 AcpiDmCommaIfFieldMember (Op); 1023 break; 1024 1025 case AML_INT_ACCESSFIELD_OP: 1026 case AML_INT_EXTACCESSFIELD_OP: 1027 1028 AcpiOsPrintf ("AccessAs (%s, ", 1029 AcpiGbl_AccessTypes [(UINT32) (Op->Common.Value.Integer & 0x7)]); 1030 1031 AcpiDmDecodeAttribute ((UINT8) (Op->Common.Value.Integer >> 8)); 1032 1033 if (Op->Common.AmlOpcode == AML_INT_EXTACCESSFIELD_OP) 1034 { 1035 AcpiOsPrintf (" (0x%2.2X)", (unsigned) 1036 ((Op->Common.Value.Integer >> 16) & 0xFF)); 1037 } 1038 1039 AcpiOsPrintf (")"); 1040 AcpiDmCommaIfFieldMember (Op); 1041 ASL_CV_PRINT_ONE_COMMENT (Op, AML_COMMENT_END_NODE, NULL, 0); 1042 break; 1043 1044 case AML_INT_CONNECTION_OP: 1045 /* 1046 * Two types of Connection() - one with a buffer object, the 1047 * other with a namestring that points to a buffer object. 1048 */ 1049 AcpiOsPrintf ("Connection ("); 1050 Child = Op->Common.Value.Arg; 1051 1052 if (Child->Common.AmlOpcode == AML_INT_BYTELIST_OP) 1053 { 1054 AcpiOsPrintf ("\n"); 1055 1056 Aml = Child->Named.Data; 1057 Length = (UINT32) Child->Common.Value.Integer; 1058 1059 Info->Level += 1; 1060 Info->MappingOp = Op; 1061 Op->Common.DisasmOpcode = ACPI_DASM_RESOURCE; 1062 1063 AcpiDmResourceTemplate (Info, Op->Common.Parent, Aml, Length); 1064 1065 Info->Level -= 1; 1066 AcpiDmIndent (Info->Level); 1067 } 1068 else 1069 { 1070 AcpiDmNamestring (Child->Common.Value.Name); 1071 } 1072 1073 AcpiOsPrintf (")"); 1074 AcpiDmCommaIfFieldMember (Op); 1075 ASL_CV_PRINT_ONE_COMMENT (Op, AML_COMMENT_END_NODE, NULL, 0); 1076 ASL_CV_PRINT_ONE_COMMENT (Op, AMLCOMMENT_INLINE, NULL, 0); 1077 AcpiOsPrintf ("\n"); 1078 1079 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; /* for now, ignore in AcpiDmAscendingOp */ 1080 Child->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 1081 break; 1082 1083 case AML_INT_BYTELIST_OP: 1084 1085 AcpiDmByteList (Info, Op); 1086 break; 1087 1088 case AML_INT_METHODCALL_OP: 1089 1090 Op = AcpiPsGetDepthNext (NULL, Op); 1091 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 1092 1093 AcpiDmNamestring (Op->Common.Value.Name); 1094 break; 1095 1096 case AML_WHILE_OP: 1097 1098 if (Op->Common.DisasmOpcode == ACPI_DASM_SWITCH) 1099 { 1100 AcpiOsPrintf ("%s", "Switch"); 1101 break; 1102 } 1103 1104 AcpiOsPrintf ("%s", OpInfo->Name); 1105 break; 1106 1107 case AML_IF_OP: 1108 1109 if (Op->Common.DisasmOpcode == ACPI_DASM_CASE) 1110 { 1111 AcpiOsPrintf ("%s", "Case"); 1112 break; 1113 } 1114 1115 AcpiOsPrintf ("%s", OpInfo->Name); 1116 break; 1117 1118 case AML_ELSE_OP: 1119 1120 AcpiDmConvertToElseIf (Op); 1121 break; 1122 1123 case AML_EXTERNAL_OP: 1124 1125 if (AcpiGbl_DmEmitExternalOpcodes) 1126 { 1127 AcpiDmEmitExternal (Op, AcpiPsGetArg(Op, 0)); 1128 } 1129 1130 break; 1131 1132 default: 1133 1134 /* Just get the opcode name and print it */ 1135 1136 AcpiOsPrintf ("%s", OpInfo->Name); 1137 1138 1139 #ifdef ACPI_DEBUGGER 1140 1141 if ((Op->Common.AmlOpcode == AML_INT_RETURN_VALUE_OP) && 1142 (WalkState) && 1143 (WalkState->Results) && 1144 (WalkState->ResultCount)) 1145 { 1146 AcpiDbDecodeInternalObject ( 1147 WalkState->Results->Results.ObjDesc [ 1148 (WalkState->ResultCount - 1) % 1149 ACPI_RESULTS_FRAME_OBJ_NUM]); 1150 } 1151 #endif 1152 1153 break; 1154 } 1155 } 1156 1157 1158 /******************************************************************************* 1159 * 1160 * FUNCTION: AcpiDmConvertToElseIf 1161 * 1162 * PARAMETERS: OriginalElseOp - ELSE Object to be examined 1163 * 1164 * RETURN: None. Emits either an "Else" or an "ElseIf" ASL operator. 1165 * 1166 * DESCRIPTION: Detect and convert an If..Else..If sequence to If..ElseIf 1167 * 1168 * EXAMPLE: 1169 * 1170 * This If..Else..If nested sequence: 1171 * 1172 * If (Arg0 == 1) 1173 * { 1174 * Local0 = 4 1175 * } 1176 * Else 1177 * { 1178 * If (Arg0 == 2) 1179 * { 1180 * Local0 = 5 1181 * } 1182 * } 1183 * 1184 * Is converted to this simpler If..ElseIf sequence: 1185 * 1186 * If (Arg0 == 1) 1187 * { 1188 * Local0 = 4 1189 * } 1190 * ElseIf (Arg0 == 2) 1191 * { 1192 * Local0 = 5 1193 * } 1194 * 1195 * NOTE: There is no actual ElseIf AML opcode. ElseIf is essentially an ASL 1196 * macro that emits an Else opcode followed by an If opcode. This function 1197 * reverses these AML sequences back to an ElseIf macro where possible. This 1198 * can make the disassembled ASL code simpler and more like the original code. 1199 * 1200 ******************************************************************************/ 1201 1202 static void 1203 AcpiDmConvertToElseIf ( 1204 ACPI_PARSE_OBJECT *OriginalElseOp) 1205 { 1206 ACPI_PARSE_OBJECT *IfOp; 1207 ACPI_PARSE_OBJECT *ElseOp; 1208 1209 1210 /* 1211 * To be able to perform the conversion, two conditions must be satisfied: 1212 * 1) The first child of the Else must be an If statement. 1213 * 2) The If block can only be followed by an Else block and these must 1214 * be the only blocks under the original Else. 1215 */ 1216 IfOp = OriginalElseOp->Common.Value.Arg; 1217 1218 if (!IfOp || 1219 (IfOp->Common.AmlOpcode != AML_IF_OP) || 1220 (IfOp->Asl.Next && (IfOp->Asl.Next->Common.AmlOpcode != AML_ELSE_OP))) 1221 { 1222 /* Not a proper Else..If sequence, cannot convert to ElseIf */ 1223 1224 if (OriginalElseOp->Common.DisasmOpcode == ACPI_DASM_DEFAULT) 1225 { 1226 AcpiOsPrintf ("%s", "Default"); 1227 return; 1228 } 1229 1230 AcpiOsPrintf ("%s", "Else"); 1231 return; 1232 } 1233 1234 /* Cannot have anything following the If...Else block */ 1235 1236 ElseOp = IfOp->Common.Next; 1237 if (ElseOp && ElseOp->Common.Next) 1238 { 1239 if (OriginalElseOp->Common.DisasmOpcode == ACPI_DASM_DEFAULT) 1240 { 1241 AcpiOsPrintf ("%s", "Default"); 1242 return; 1243 } 1244 1245 AcpiOsPrintf ("%s", "Else"); 1246 return; 1247 } 1248 1249 if (OriginalElseOp->Common.DisasmOpcode == ACPI_DASM_DEFAULT) 1250 { 1251 /* 1252 * There is an ElseIf but in this case the Else is actually 1253 * a Default block for a Switch/Case statement. No conversion. 1254 */ 1255 AcpiOsPrintf ("%s", "Default"); 1256 return; 1257 } 1258 1259 if (OriginalElseOp->Common.DisasmOpcode == ACPI_DASM_CASE) 1260 { 1261 /* 1262 * This ElseIf is actually a Case block for a Switch/Case 1263 * statement. Print Case but do not return so that we can 1264 * promote the subtree and keep the indentation level. 1265 */ 1266 AcpiOsPrintf ("%s", "Case"); 1267 } 1268 else 1269 { 1270 /* Emit ElseIf, mark the IF as now an ELSEIF */ 1271 1272 AcpiOsPrintf ("%s", "ElseIf"); 1273 } 1274 1275 IfOp->Common.DisasmFlags |= ACPI_PARSEOP_ELSEIF; 1276 1277 /* The IF parent will now be the same as the original ELSE parent */ 1278 1279 IfOp->Common.Parent = OriginalElseOp->Common.Parent; 1280 1281 /* 1282 * Update the NEXT pointers to restructure the parse tree, essentially 1283 * promoting an If..Else block up to the same level as the original 1284 * Else. 1285 * 1286 * Check if the IF has a corresponding ELSE peer 1287 */ 1288 ElseOp = IfOp->Common.Next; 1289 if (ElseOp && 1290 (ElseOp->Common.AmlOpcode == AML_ELSE_OP)) 1291 { 1292 /* If an ELSE matches the IF, promote it also */ 1293 1294 ElseOp->Common.Parent = OriginalElseOp->Common.Parent; 1295 1296 /* Promote the entire block under the ElseIf (All Next OPs) */ 1297 1298 AcpiDmPromoteSubtree (OriginalElseOp); 1299 } 1300 else 1301 { 1302 /* Otherwise, set the IF NEXT to the original ELSE NEXT */ 1303 1304 IfOp->Common.Next = OriginalElseOp->Common.Next; 1305 } 1306 1307 /* Detach the child IF block from the original ELSE */ 1308 1309 OriginalElseOp->Common.Value.Arg = NULL; 1310 1311 /* Ignore the original ELSE from now on */ 1312 1313 OriginalElseOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 1314 OriginalElseOp->Common.DisasmOpcode = ACPI_DASM_LNOT_PREFIX; 1315 1316 /* Insert IF (now ELSEIF) as next peer of the original ELSE */ 1317 1318 OriginalElseOp->Common.Next = IfOp; 1319 } 1320 1321 1322 /******************************************************************************* 1323 * 1324 * FUNCTION: AcpiDmPromoteSubtree 1325 * 1326 * PARAMETERS: StartOpOp - Original parent of the entire subtree 1327 * 1328 * RETURN: None 1329 * 1330 * DESCRIPTION: Promote an entire parse subtree up one level. 1331 * 1332 ******************************************************************************/ 1333 1334 static void 1335 AcpiDmPromoteSubtree ( 1336 ACPI_PARSE_OBJECT *StartOp) 1337 { 1338 ACPI_PARSE_OBJECT *Op; 1339 ACPI_PARSE_OBJECT *ParentOp; 1340 1341 1342 /* New parent for subtree elements */ 1343 1344 ParentOp = StartOp->Common.Parent; 1345 1346 /* First child starts the subtree */ 1347 1348 Op = StartOp->Common.Value.Arg; 1349 1350 /* Walk the top-level elements of the subtree */ 1351 1352 while (Op) 1353 { 1354 Op->Common.Parent = ParentOp; 1355 if (!Op->Common.Next) 1356 { 1357 /* Last Op in list, update its next field */ 1358 1359 Op->Common.Next = StartOp->Common.Next; 1360 break; 1361 } 1362 Op = Op->Common.Next; 1363 } 1364 } 1365 1366 #endif /* ACPI_DISASSEMBLER */ 1367