1 /******************************************************************************* 2 * 3 * Module Name: dmwalk - AML disassembly tree walk 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 "acdebug.h" 49 50 51 #ifdef ACPI_DISASSEMBLER 52 53 #define _COMPONENT ACPI_CA_DEBUGGER 54 ACPI_MODULE_NAME ("dmwalk") 55 56 57 #define DB_FULL_OP_INFO "[%4.4s] @%5.5X #%4.4X: " 58 59 /* Stub for non-compiler code */ 60 61 #ifndef ACPI_ASL_COMPILER 62 void 63 AcpiDmEmitExternals ( 64 void) 65 { 66 return; 67 } 68 #endif 69 70 /* Local prototypes */ 71 72 static ACPI_STATUS 73 AcpiDmDescendingOp ( 74 ACPI_PARSE_OBJECT *Op, 75 UINT32 Level, 76 void *Context); 77 78 static ACPI_STATUS 79 AcpiDmAscendingOp ( 80 ACPI_PARSE_OBJECT *Op, 81 UINT32 Level, 82 void *Context); 83 84 static UINT32 85 AcpiDmBlockType ( 86 ACPI_PARSE_OBJECT *Op); 87 88 89 /******************************************************************************* 90 * 91 * FUNCTION: AcpiDmDisassemble 92 * 93 * PARAMETERS: WalkState - Current state 94 * Origin - Starting object 95 * NumOpcodes - Max number of opcodes to be displayed 96 * 97 * RETURN: None 98 * 99 * DESCRIPTION: Disassemble parser object and its children. This is the 100 * main entry point of the disassembler. 101 * 102 ******************************************************************************/ 103 104 void 105 AcpiDmDisassemble ( 106 ACPI_WALK_STATE *WalkState, 107 ACPI_PARSE_OBJECT *Origin, 108 UINT32 NumOpcodes) 109 { 110 ACPI_PARSE_OBJECT *Op = Origin; 111 ACPI_OP_WALK_INFO Info; 112 113 114 if (!Op) 115 { 116 return; 117 } 118 119 memset (&Info, 0, sizeof (ACPI_OP_WALK_INFO)); 120 Info.WalkState = WalkState; 121 Info.StartAml = Op->Common.Aml - sizeof (ACPI_TABLE_HEADER); 122 Info.AmlOffset = Op->Common.Aml - Info.StartAml; 123 124 AcpiDmWalkParseTree (Op, AcpiDmDescendingOp, AcpiDmAscendingOp, &Info); 125 return; 126 } 127 128 129 /******************************************************************************* 130 * 131 * FUNCTION: AcpiDmWalkParseTree 132 * 133 * PARAMETERS: Op - Root Op object 134 * DescendingCallback - Called during tree descent 135 * AscendingCallback - Called during tree ascent 136 * Context - To be passed to the callbacks 137 * 138 * RETURN: Status from callback(s) 139 * 140 * DESCRIPTION: Walk the entire parse tree. 141 * 142 ******************************************************************************/ 143 144 void 145 AcpiDmWalkParseTree ( 146 ACPI_PARSE_OBJECT *Op, 147 ASL_WALK_CALLBACK DescendingCallback, 148 ASL_WALK_CALLBACK AscendingCallback, 149 void *Context) 150 { 151 BOOLEAN NodePreviouslyVisited; 152 ACPI_PARSE_OBJECT *StartOp = Op; 153 ACPI_STATUS Status; 154 ACPI_PARSE_OBJECT *Next; 155 ACPI_OP_WALK_INFO *Info = Context; 156 157 158 Info->Level = 0; 159 NodePreviouslyVisited = FALSE; 160 161 while (Op) 162 { 163 if (NodePreviouslyVisited) 164 { 165 if (AscendingCallback) 166 { 167 Status = AscendingCallback (Op, Info->Level, Context); 168 if (ACPI_FAILURE (Status)) 169 { 170 return; 171 } 172 } 173 } 174 else 175 { 176 /* Let the callback process the node */ 177 178 Status = DescendingCallback (Op, Info->Level, Context); 179 if (ACPI_SUCCESS (Status)) 180 { 181 /* Visit children first, once */ 182 183 Next = AcpiPsGetArg (Op, 0); 184 if (Next) 185 { 186 Info->Level++; 187 Op = Next; 188 continue; 189 } 190 } 191 else if (Status != AE_CTRL_DEPTH) 192 { 193 /* Exit immediately on any error */ 194 195 return; 196 } 197 } 198 199 /* Terminate walk at start op */ 200 201 if (Op == StartOp) 202 { 203 break; 204 } 205 206 /* No more children, re-visit this node */ 207 208 if (!NodePreviouslyVisited) 209 { 210 NodePreviouslyVisited = TRUE; 211 continue; 212 } 213 214 /* No more children, visit peers */ 215 216 if (Op->Common.Next) 217 { 218 Op = Op->Common.Next; 219 NodePreviouslyVisited = FALSE; 220 } 221 else 222 { 223 /* No peers, re-visit parent */ 224 225 if (Info->Level != 0 ) 226 { 227 Info->Level--; 228 } 229 230 Op = Op->Common.Parent; 231 NodePreviouslyVisited = TRUE; 232 } 233 } 234 235 /* If we get here, the walk completed with no errors */ 236 237 return; 238 } 239 240 241 /******************************************************************************* 242 * 243 * FUNCTION: AcpiDmBlockType 244 * 245 * PARAMETERS: Op - Object to be examined 246 * 247 * RETURN: BlockType - not a block, parens, braces, or even both. 248 * 249 * DESCRIPTION: Type of block for this op (parens or braces) 250 * 251 ******************************************************************************/ 252 253 static UINT32 254 AcpiDmBlockType ( 255 ACPI_PARSE_OBJECT *Op) 256 { 257 const ACPI_OPCODE_INFO *OpInfo; 258 259 260 if (!Op) 261 { 262 return (BLOCK_NONE); 263 } 264 265 switch (Op->Common.AmlOpcode) 266 { 267 case AML_ELSE_OP: 268 269 return (BLOCK_BRACE); 270 271 case AML_METHOD_OP: 272 case AML_DEVICE_OP: 273 case AML_SCOPE_OP: 274 case AML_PROCESSOR_OP: 275 case AML_POWER_RES_OP: 276 case AML_THERMAL_ZONE_OP: 277 case AML_IF_OP: 278 case AML_WHILE_OP: 279 case AML_FIELD_OP: 280 case AML_INDEX_FIELD_OP: 281 case AML_BANK_FIELD_OP: 282 283 return (BLOCK_PAREN | BLOCK_BRACE); 284 285 case AML_BUFFER_OP: 286 287 if ((Op->Common.DisasmOpcode == ACPI_DASM_UNICODE) || 288 (Op->Common.DisasmOpcode == ACPI_DASM_UUID) || 289 (Op->Common.DisasmOpcode == ACPI_DASM_PLD_METHOD)) 290 { 291 return (BLOCK_NONE); 292 } 293 294 /*lint -fallthrough */ 295 296 case AML_PACKAGE_OP: 297 case AML_VAR_PACKAGE_OP: 298 299 return (BLOCK_PAREN | BLOCK_BRACE); 300 301 case AML_EVENT_OP: 302 303 return (BLOCK_PAREN); 304 305 case AML_INT_METHODCALL_OP: 306 307 if (Op->Common.Parent && 308 ((Op->Common.Parent->Common.AmlOpcode == AML_PACKAGE_OP) || 309 (Op->Common.Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP))) 310 { 311 /* This is a reference to a method, not an invocation */ 312 313 return (BLOCK_NONE); 314 } 315 316 /*lint -fallthrough */ 317 318 default: 319 320 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 321 if (OpInfo->Flags & AML_HAS_ARGS) 322 { 323 return (BLOCK_PAREN); 324 } 325 326 return (BLOCK_NONE); 327 } 328 } 329 330 331 /******************************************************************************* 332 * 333 * FUNCTION: AcpiDmListType 334 * 335 * PARAMETERS: Op - Object to be examined 336 * 337 * RETURN: ListType - has commas or not. 338 * 339 * DESCRIPTION: Type of block for this op (parens or braces) 340 * 341 ******************************************************************************/ 342 343 UINT32 344 AcpiDmListType ( 345 ACPI_PARSE_OBJECT *Op) 346 { 347 const ACPI_OPCODE_INFO *OpInfo; 348 349 350 if (!Op) 351 { 352 return (BLOCK_NONE); 353 } 354 355 switch (Op->Common.AmlOpcode) 356 { 357 358 case AML_ELSE_OP: 359 case AML_METHOD_OP: 360 case AML_DEVICE_OP: 361 case AML_SCOPE_OP: 362 case AML_POWER_RES_OP: 363 case AML_PROCESSOR_OP: 364 case AML_THERMAL_ZONE_OP: 365 case AML_IF_OP: 366 case AML_WHILE_OP: 367 case AML_FIELD_OP: 368 case AML_INDEX_FIELD_OP: 369 case AML_BANK_FIELD_OP: 370 371 return (BLOCK_NONE); 372 373 case AML_BUFFER_OP: 374 case AML_PACKAGE_OP: 375 case AML_VAR_PACKAGE_OP: 376 377 return (BLOCK_COMMA_LIST); 378 379 default: 380 381 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 382 if (OpInfo->Flags & AML_HAS_ARGS) 383 { 384 return (BLOCK_COMMA_LIST); 385 } 386 387 return (BLOCK_NONE); 388 } 389 } 390 391 392 /******************************************************************************* 393 * 394 * FUNCTION: AcpiDmDescendingOp 395 * 396 * PARAMETERS: ASL_WALK_CALLBACK 397 * 398 * RETURN: Status 399 * 400 * DESCRIPTION: First visitation of a parse object during tree descent. 401 * Decode opcode name and begin parameter list(s), if any. 402 * 403 ******************************************************************************/ 404 405 static ACPI_STATUS 406 AcpiDmDescendingOp ( 407 ACPI_PARSE_OBJECT *Op, 408 UINT32 Level, 409 void *Context) 410 { 411 ACPI_OP_WALK_INFO *Info = Context; 412 const ACPI_OPCODE_INFO *OpInfo; 413 UINT32 Name; 414 ACPI_PARSE_OBJECT *NextOp; 415 ACPI_PARSE_OBJECT *NextOp2; 416 UINT32 AmlOffset; 417 418 419 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 420 421 /* Listing support to dump the AML code after the ASL statement */ 422 423 if (AcpiGbl_DmOpt_Listing) 424 { 425 /* We only care about these classes of objects */ 426 427 if ((OpInfo->Class == AML_CLASS_NAMED_OBJECT) || 428 (OpInfo->Class == AML_CLASS_CONTROL) || 429 (OpInfo->Class == AML_CLASS_CREATE) || 430 ((OpInfo->Class == AML_CLASS_EXECUTE) && (!Op->Common.Next))) 431 { 432 if (AcpiGbl_DmOpt_Listing && Info->PreviousAml) 433 { 434 /* Dump the AML byte code for the previous Op */ 435 436 if (Op->Common.Aml > Info->PreviousAml) 437 { 438 AcpiOsPrintf ("\n"); 439 AcpiUtDumpBuffer ( 440 (Info->StartAml + Info->AmlOffset), 441 (Op->Common.Aml - Info->PreviousAml), 442 DB_BYTE_DISPLAY, Info->AmlOffset); 443 AcpiOsPrintf ("\n"); 444 } 445 446 Info->AmlOffset = (Op->Common.Aml - Info->StartAml); 447 } 448 449 Info->PreviousAml = Op->Common.Aml; 450 } 451 } 452 453 if (Op->Common.DisasmFlags & ACPI_PARSEOP_IGNORE) 454 { 455 /* Ignore this op -- it was handled elsewhere */ 456 457 return (AE_CTRL_DEPTH); 458 } 459 460 if (Op->Common.AmlOpcode == AML_IF_OP) 461 { 462 NextOp = AcpiPsGetDepthNext (NULL, Op); 463 if (NextOp) 464 { 465 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 466 } 467 468 /* 469 * A Zero predicate indicates the possibility of one or more 470 * External() opcodes within the If() block. 471 */ 472 if (NextOp->Common.AmlOpcode == AML_ZERO_OP) 473 { 474 NextOp2 = NextOp->Common.Next; 475 476 if (NextOp2 && 477 (NextOp2->Common.AmlOpcode == AML_EXTERNAL_OP)) 478 { 479 /* Ignore the If 0 block and all children */ 480 481 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 482 return (AE_CTRL_DEPTH); 483 } 484 } 485 } 486 487 /* Level 0 is at the Definition Block level */ 488 489 if (Level == 0) 490 { 491 /* In verbose mode, print the AML offset, opcode and depth count */ 492 493 if (Info->WalkState) 494 { 495 AmlOffset = (UINT32) ACPI_PTR_DIFF (Op->Common.Aml, 496 Info->WalkState->ParserState.AmlStart); 497 if (AcpiGbl_DmOpt_Verbose) 498 { 499 AcpiOsPrintf (DB_FULL_OP_INFO, 500 (Info->WalkState->MethodNode ? 501 Info->WalkState->MethodNode->Name.Ascii : " "), 502 AmlOffset, (UINT32) Op->Common.AmlOpcode); 503 } 504 } 505 506 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 507 { 508 /* This is the beginning of the Definition Block */ 509 510 AcpiOsPrintf ("{\n"); 511 512 /* Emit all External() declarations here */ 513 514 AcpiDmEmitExternals (); 515 return (AE_OK); 516 } 517 } 518 else if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 519 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) && 520 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_ELSEIF)) && 521 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 522 { 523 /* 524 * This is a first-level element of a term list, 525 * indent a new line 526 */ 527 switch (Op->Common.AmlOpcode) 528 { 529 case AML_NOOP_OP: 530 /* 531 * Optionally just ignore this opcode. Some tables use 532 * NoOp opcodes for "padding" out packages that the BIOS 533 * changes dynamically. This can leave hundreds or 534 * thousands of NoOp opcodes that if disassembled, 535 * cannot be compiled because they are syntactically 536 * incorrect. 537 */ 538 if (AcpiGbl_IgnoreNoopOperator) 539 { 540 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 541 return (AE_OK); 542 } 543 544 /* Fallthrough */ 545 546 default: 547 548 AcpiDmIndent (Level); 549 break; 550 } 551 552 Info->LastLevel = Level; 553 Info->Count = 0; 554 } 555 556 /* 557 * This is an inexpensive mechanism to try and keep lines from getting 558 * too long. When the limit is hit, start a new line at the previous 559 * indent plus one. A better but more expensive mechanism would be to 560 * keep track of the current column. 561 */ 562 Info->Count++; 563 if (Info->Count /* +Info->LastLevel */ > 12) 564 { 565 Info->Count = 0; 566 AcpiOsPrintf ("\n"); 567 AcpiDmIndent (Info->LastLevel + 1); 568 } 569 570 /* If ASL+ is enabled, check for a C-style operator */ 571 572 if (AcpiDmCheckForSymbolicOpcode (Op, Info)) 573 { 574 return (AE_OK); 575 } 576 577 /* Print the opcode name */ 578 579 AcpiDmDisassembleOneOp (NULL, Info, Op); 580 581 if ((Op->Common.DisasmOpcode == ACPI_DASM_LNOT_PREFIX) || 582 (Op->Common.AmlOpcode == AML_INT_CONNECTION_OP)) 583 { 584 return (AE_OK); 585 } 586 587 if ((Op->Common.AmlOpcode == AML_NAME_OP) || 588 (Op->Common.AmlOpcode == AML_RETURN_OP)) 589 { 590 Info->Level--; 591 } 592 593 /* Start the opcode argument list if necessary */ 594 595 if ((OpInfo->Flags & AML_HAS_ARGS) || 596 (Op->Common.AmlOpcode == AML_EVENT_OP)) 597 { 598 /* This opcode has an argument list */ 599 600 if (AcpiDmBlockType (Op) & BLOCK_PAREN) 601 { 602 AcpiOsPrintf (" ("); 603 } 604 605 /* If this is a named opcode, print the associated name value */ 606 607 if (OpInfo->Flags & AML_NAMED) 608 { 609 switch (Op->Common.AmlOpcode) 610 { 611 case AML_ALIAS_OP: 612 613 NextOp = AcpiPsGetDepthNext (NULL, Op); 614 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 615 AcpiDmNamestring (NextOp->Common.Value.Name); 616 AcpiOsPrintf (", "); 617 618 /*lint -fallthrough */ 619 620 default: 621 622 Name = AcpiPsGetName (Op); 623 if (Op->Named.Path) 624 { 625 AcpiDmNamestring ((char *) Op->Named.Path); 626 } 627 else 628 { 629 AcpiDmDumpName (Name); 630 } 631 632 if (Op->Common.AmlOpcode != AML_INT_NAMEDFIELD_OP) 633 { 634 if (AcpiGbl_DmOpt_Verbose) 635 { 636 (void) AcpiPsDisplayObjectPathname (NULL, Op); 637 } 638 } 639 break; 640 } 641 642 switch (Op->Common.AmlOpcode) 643 { 644 case AML_METHOD_OP: 645 646 AcpiDmMethodFlags (Op); 647 AcpiOsPrintf (")"); 648 649 /* Emit description comment for Method() with a predefined ACPI name */ 650 651 AcpiDmPredefinedDescription (Op); 652 break; 653 654 case AML_NAME_OP: 655 656 /* Check for _HID and related EISAID() */ 657 658 AcpiDmCheckForHardwareId (Op); 659 AcpiOsPrintf (", "); 660 break; 661 662 case AML_REGION_OP: 663 664 AcpiDmRegionFlags (Op); 665 break; 666 667 case AML_POWER_RES_OP: 668 669 /* Mark the next two Ops as part of the parameter list */ 670 671 AcpiOsPrintf (", "); 672 NextOp = AcpiPsGetDepthNext (NULL, Op); 673 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 674 675 NextOp = NextOp->Common.Next; 676 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 677 return (AE_OK); 678 679 case AML_PROCESSOR_OP: 680 681 /* Mark the next three Ops as part of the parameter list */ 682 683 AcpiOsPrintf (", "); 684 NextOp = AcpiPsGetDepthNext (NULL, Op); 685 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 686 687 NextOp = NextOp->Common.Next; 688 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 689 690 NextOp = NextOp->Common.Next; 691 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 692 return (AE_OK); 693 694 case AML_MUTEX_OP: 695 case AML_DATA_REGION_OP: 696 697 AcpiOsPrintf (", "); 698 return (AE_OK); 699 700 case AML_EVENT_OP: 701 case AML_ALIAS_OP: 702 703 return (AE_OK); 704 705 case AML_SCOPE_OP: 706 case AML_DEVICE_OP: 707 case AML_THERMAL_ZONE_OP: 708 709 AcpiOsPrintf (")"); 710 break; 711 712 default: 713 714 AcpiOsPrintf ("*** Unhandled named opcode %X\n", 715 Op->Common.AmlOpcode); 716 break; 717 } 718 } 719 720 else switch (Op->Common.AmlOpcode) 721 { 722 case AML_FIELD_OP: 723 case AML_BANK_FIELD_OP: 724 case AML_INDEX_FIELD_OP: 725 726 Info->BitOffset = 0; 727 728 /* Name of the parent OperationRegion */ 729 730 NextOp = AcpiPsGetDepthNext (NULL, Op); 731 AcpiDmNamestring (NextOp->Common.Value.Name); 732 AcpiOsPrintf (", "); 733 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 734 735 switch (Op->Common.AmlOpcode) 736 { 737 case AML_BANK_FIELD_OP: 738 739 /* Namestring - Bank Name */ 740 741 NextOp = AcpiPsGetDepthNext (NULL, NextOp); 742 AcpiDmNamestring (NextOp->Common.Value.Name); 743 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 744 AcpiOsPrintf (", "); 745 746 /* 747 * Bank Value. This is a TermArg in the middle of the parameter 748 * list, must handle it here. 749 * 750 * Disassemble the TermArg parse tree. ACPI_PARSEOP_PARAMLIST 751 * eliminates newline in the output. 752 */ 753 NextOp = NextOp->Common.Next; 754 755 Info->Flags = ACPI_PARSEOP_PARAMLIST; 756 AcpiDmWalkParseTree (NextOp, AcpiDmDescendingOp, 757 AcpiDmAscendingOp, Info); 758 Info->Flags = 0; 759 Info->Level = Level; 760 761 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 762 AcpiOsPrintf (", "); 763 break; 764 765 case AML_INDEX_FIELD_OP: 766 767 /* Namestring - Data Name */ 768 769 NextOp = AcpiPsGetDepthNext (NULL, NextOp); 770 AcpiDmNamestring (NextOp->Common.Value.Name); 771 AcpiOsPrintf (", "); 772 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 773 break; 774 775 default: 776 777 break; 778 } 779 780 AcpiDmFieldFlags (NextOp); 781 break; 782 783 case AML_BUFFER_OP: 784 785 /* The next op is the size parameter */ 786 787 NextOp = AcpiPsGetDepthNext (NULL, Op); 788 if (!NextOp) 789 { 790 /* Single-step support */ 791 792 return (AE_OK); 793 } 794 795 if (Op->Common.DisasmOpcode == ACPI_DASM_RESOURCE) 796 { 797 /* 798 * We have a resource list. Don't need to output 799 * the buffer size Op. Open up a new block 800 */ 801 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 802 NextOp = NextOp->Common.Next; 803 AcpiOsPrintf (")"); 804 805 /* Emit description comment for Name() with a predefined ACPI name */ 806 807 AcpiDmPredefinedDescription (Op->Asl.Parent); 808 809 AcpiOsPrintf ("\n"); 810 AcpiDmIndent (Info->Level); 811 AcpiOsPrintf ("{\n"); 812 return (AE_OK); 813 } 814 815 /* Normal Buffer, mark size as in the parameter list */ 816 817 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 818 return (AE_OK); 819 820 case AML_IF_OP: 821 case AML_VAR_PACKAGE_OP: 822 case AML_WHILE_OP: 823 824 /* The next op is the size or predicate parameter */ 825 826 NextOp = AcpiPsGetDepthNext (NULL, Op); 827 if (NextOp) 828 { 829 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 830 } 831 return (AE_OK); 832 833 case AML_PACKAGE_OP: 834 835 /* The next op is the size parameter */ 836 837 NextOp = AcpiPsGetDepthNext (NULL, Op); 838 if (NextOp) 839 { 840 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 841 } 842 return (AE_OK); 843 844 case AML_MATCH_OP: 845 846 AcpiDmMatchOp (Op); 847 break; 848 849 default: 850 851 break; 852 } 853 854 if (AcpiDmBlockType (Op) & BLOCK_BRACE) 855 { 856 AcpiOsPrintf ("\n"); 857 AcpiDmIndent (Level); 858 AcpiOsPrintf ("{\n"); 859 } 860 } 861 862 return (AE_OK); 863 } 864 865 866 /******************************************************************************* 867 * 868 * FUNCTION: AcpiDmAscendingOp 869 * 870 * PARAMETERS: ASL_WALK_CALLBACK 871 * 872 * RETURN: Status 873 * 874 * DESCRIPTION: Second visitation of a parse object, during ascent of parse 875 * tree. Close out any parameter lists and complete the opcode. 876 * 877 ******************************************************************************/ 878 879 static ACPI_STATUS 880 AcpiDmAscendingOp ( 881 ACPI_PARSE_OBJECT *Op, 882 UINT32 Level, 883 void *Context) 884 { 885 ACPI_OP_WALK_INFO *Info = Context; 886 ACPI_PARSE_OBJECT *ParentOp; 887 888 889 if (Op->Common.DisasmFlags & ACPI_PARSEOP_IGNORE) 890 { 891 /* Ignore this op -- it was handled elsewhere */ 892 893 return (AE_OK); 894 } 895 896 if ((Level == 0) && (Op->Common.AmlOpcode == AML_SCOPE_OP)) 897 { 898 /* Indicates the end of the current descriptor block (table) */ 899 900 AcpiOsPrintf ("}\n\n"); 901 return (AE_OK); 902 } 903 904 switch (AcpiDmBlockType (Op)) 905 { 906 case BLOCK_PAREN: 907 908 /* Completed an op that has arguments, add closing paren if needed */ 909 910 AcpiDmCloseOperator (Op); 911 912 if (Op->Common.AmlOpcode == AML_NAME_OP) 913 { 914 /* Emit description comment for Name() with a predefined ACPI name */ 915 916 AcpiDmPredefinedDescription (Op); 917 } 918 else 919 { 920 /* For Create* operators, attempt to emit resource tag description */ 921 922 AcpiDmFieldPredefinedDescription (Op); 923 } 924 925 /* Decode Notify() values */ 926 927 if (Op->Common.AmlOpcode == AML_NOTIFY_OP) 928 { 929 AcpiDmNotifyDescription (Op); 930 } 931 932 AcpiDmDisplayTargetPathname (Op); 933 934 /* Could be a nested operator, check if comma required */ 935 936 if (!AcpiDmCommaIfListMember (Op)) 937 { 938 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 939 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) && 940 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 941 { 942 /* 943 * This is a first-level element of a term list 944 * start a new line 945 */ 946 if (!(Info->Flags & ACPI_PARSEOP_PARAMLIST)) 947 { 948 AcpiOsPrintf ("\n"); 949 } 950 } 951 } 952 break; 953 954 case BLOCK_BRACE: 955 case (BLOCK_BRACE | BLOCK_PAREN): 956 957 /* Completed an op that has a term list, add closing brace */ 958 959 if (Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST) 960 { 961 AcpiOsPrintf ("}"); 962 } 963 else 964 { 965 AcpiDmIndent (Level); 966 AcpiOsPrintf ("}"); 967 } 968 969 AcpiDmCommaIfListMember (Op); 970 971 if (AcpiDmBlockType (Op->Common.Parent) != BLOCK_PAREN) 972 { 973 AcpiOsPrintf ("\n"); 974 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST)) 975 { 976 if ((Op->Common.AmlOpcode == AML_IF_OP) && 977 (Op->Common.Next) && 978 (Op->Common.Next->Common.AmlOpcode == AML_ELSE_OP)) 979 { 980 break; 981 } 982 983 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 984 (!Op->Common.Next)) 985 { 986 break; 987 } 988 AcpiOsPrintf ("\n"); 989 } 990 } 991 break; 992 993 case BLOCK_NONE: 994 default: 995 996 /* Could be a nested operator, check if comma required */ 997 998 if (!AcpiDmCommaIfListMember (Op)) 999 { 1000 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 1001 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) && 1002 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 1003 { 1004 /* 1005 * This is a first-level element of a term list 1006 * start a new line 1007 */ 1008 AcpiOsPrintf ("\n"); 1009 } 1010 } 1011 else if (Op->Common.Parent) 1012 { 1013 switch (Op->Common.Parent->Common.AmlOpcode) 1014 { 1015 case AML_PACKAGE_OP: 1016 case AML_VAR_PACKAGE_OP: 1017 1018 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) 1019 { 1020 AcpiOsPrintf ("\n"); 1021 } 1022 break; 1023 1024 default: 1025 1026 break; 1027 } 1028 } 1029 break; 1030 } 1031 1032 if (Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST) 1033 { 1034 if ((Op->Common.Next) && 1035 (Op->Common.Next->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) 1036 { 1037 return (AE_OK); 1038 } 1039 1040 /* 1041 * The parent Op is guaranteed to be valid because of the flag 1042 * ACPI_PARSEOP_PARAMLIST -- which means that this op is part of 1043 * a parameter list and thus has a valid parent. 1044 */ 1045 ParentOp = Op->Common.Parent; 1046 1047 /* 1048 * Just completed a parameter node for something like "Buffer (param)". 1049 * Close the paren and open up the term list block with a brace 1050 */ 1051 if (Op->Common.Next) 1052 { 1053 AcpiOsPrintf (")"); 1054 1055 /* 1056 * Emit a description comment for a Name() operator that is a 1057 * predefined ACPI name. Must check the grandparent. 1058 */ 1059 ParentOp = ParentOp->Common.Parent; 1060 if (ParentOp && 1061 (ParentOp->Asl.AmlOpcode == AML_NAME_OP)) 1062 { 1063 AcpiDmPredefinedDescription (ParentOp); 1064 } 1065 1066 AcpiOsPrintf ("\n"); 1067 AcpiDmIndent (Level - 1); 1068 AcpiOsPrintf ("{\n"); 1069 } 1070 else 1071 { 1072 ParentOp->Common.DisasmFlags |= ACPI_PARSEOP_EMPTY_TERMLIST; 1073 AcpiOsPrintf (") {"); 1074 } 1075 } 1076 1077 if ((Op->Common.AmlOpcode == AML_NAME_OP) || 1078 (Op->Common.AmlOpcode == AML_RETURN_OP)) 1079 { 1080 Info->Level++; 1081 } 1082 1083 /* 1084 * For ASL+, check for and emit a C-style symbol. If valid, the 1085 * symbol string has been deferred until after the first operand 1086 */ 1087 if (AcpiGbl_CstyleDisassembly) 1088 { 1089 if (Op->Asl.OperatorSymbol) 1090 { 1091 AcpiOsPrintf ("%s", Op->Asl.OperatorSymbol); 1092 Op->Asl.OperatorSymbol = NULL; 1093 } 1094 } 1095 1096 return (AE_OK); 1097 } 1098 1099 #endif /* ACPI_DISASSEMBLER */ 1100