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 UINT32 AmlOffset; 416 417 418 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 419 420 /* Listing support to dump the AML code after the ASL statement */ 421 422 if (AcpiGbl_DmOpt_Listing) 423 { 424 /* We only care about these classes of objects */ 425 426 if ((OpInfo->Class == AML_CLASS_NAMED_OBJECT) || 427 (OpInfo->Class == AML_CLASS_CONTROL) || 428 (OpInfo->Class == AML_CLASS_CREATE) || 429 ((OpInfo->Class == AML_CLASS_EXECUTE) && (!Op->Common.Next))) 430 { 431 if (AcpiGbl_DmOpt_Listing && Info->PreviousAml) 432 { 433 /* Dump the AML byte code for the previous Op */ 434 435 if (Op->Common.Aml > Info->PreviousAml) 436 { 437 AcpiOsPrintf ("\n"); 438 AcpiUtDumpBuffer ( 439 (Info->StartAml + Info->AmlOffset), 440 (Op->Common.Aml - Info->PreviousAml), 441 DB_BYTE_DISPLAY, 442 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 /* Level 0 is at the Definition Block level */ 461 462 if (Level == 0) 463 { 464 /* In verbose mode, print the AML offset, opcode and depth count */ 465 466 if (Info->WalkState) 467 { 468 AmlOffset = (UINT32) ACPI_PTR_DIFF (Op->Common.Aml, 469 Info->WalkState->ParserState.AmlStart); 470 if (AcpiGbl_DmOpt_Verbose) 471 { 472 AcpiOsPrintf (DB_FULL_OP_INFO, 473 (Info->WalkState->MethodNode ? 474 Info->WalkState->MethodNode->Name.Ascii : " "), 475 AmlOffset, (UINT32) Op->Common.AmlOpcode); 476 } 477 } 478 479 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 480 { 481 /* This is the beginning of the Definition Block */ 482 483 AcpiOsPrintf ("{\n"); 484 485 /* Emit all External() declarations here */ 486 487 AcpiDmEmitExternals (); 488 return (AE_OK); 489 } 490 } 491 else if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 492 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) && 493 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_ELSEIF)) && 494 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 495 { 496 /* 497 * This is a first-level element of a term list, 498 * indent a new line 499 */ 500 switch (Op->Common.AmlOpcode) 501 { 502 case AML_NOOP_OP: 503 /* 504 * Optionally just ignore this opcode. Some tables use 505 * NoOp opcodes for "padding" out packages that the BIOS 506 * changes dynamically. This can leave hundreds or 507 * thousands of NoOp opcodes that if disassembled, 508 * cannot be compiled because they are syntactically 509 * incorrect. 510 */ 511 if (AcpiGbl_IgnoreNoopOperator) 512 { 513 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 514 return (AE_OK); 515 } 516 517 /* Fallthrough */ 518 519 default: 520 521 AcpiDmIndent (Level); 522 break; 523 } 524 525 Info->LastLevel = Level; 526 Info->Count = 0; 527 } 528 529 /* 530 * This is an inexpensive mechanism to try and keep lines from getting 531 * too long. When the limit is hit, start a new line at the previous 532 * indent plus one. A better but more expensive mechanism would be to 533 * keep track of the current column. 534 */ 535 Info->Count++; 536 if (Info->Count /* +Info->LastLevel */ > 12) 537 { 538 Info->Count = 0; 539 AcpiOsPrintf ("\n"); 540 AcpiDmIndent (Info->LastLevel + 1); 541 } 542 543 /* If ASL+ is enabled, check for a C-style operator */ 544 545 if (AcpiDmCheckForSymbolicOpcode (Op, Info)) 546 { 547 return (AE_OK); 548 } 549 550 /* Print the opcode name */ 551 552 AcpiDmDisassembleOneOp (NULL, Info, Op); 553 554 if ((Op->Common.DisasmOpcode == ACPI_DASM_LNOT_PREFIX) || 555 (Op->Common.AmlOpcode == AML_INT_CONNECTION_OP)) 556 { 557 return (AE_OK); 558 } 559 560 if ((Op->Common.AmlOpcode == AML_NAME_OP) || 561 (Op->Common.AmlOpcode == AML_RETURN_OP)) 562 { 563 Info->Level--; 564 } 565 566 /* Start the opcode argument list if necessary */ 567 568 if ((OpInfo->Flags & AML_HAS_ARGS) || 569 (Op->Common.AmlOpcode == AML_EVENT_OP)) 570 { 571 /* This opcode has an argument list */ 572 573 if (AcpiDmBlockType (Op) & BLOCK_PAREN) 574 { 575 AcpiOsPrintf (" ("); 576 } 577 578 /* If this is a named opcode, print the associated name value */ 579 580 if (OpInfo->Flags & AML_NAMED) 581 { 582 switch (Op->Common.AmlOpcode) 583 { 584 case AML_ALIAS_OP: 585 586 NextOp = AcpiPsGetDepthNext (NULL, Op); 587 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 588 AcpiDmNamestring (NextOp->Common.Value.Name); 589 AcpiOsPrintf (", "); 590 591 /*lint -fallthrough */ 592 593 default: 594 595 Name = AcpiPsGetName (Op); 596 if (Op->Named.Path) 597 { 598 AcpiDmNamestring ((char *) Op->Named.Path); 599 } 600 else 601 { 602 AcpiDmDumpName (Name); 603 } 604 605 if (Op->Common.AmlOpcode != AML_INT_NAMEDFIELD_OP) 606 { 607 if (AcpiGbl_DmOpt_Verbose) 608 { 609 (void) AcpiPsDisplayObjectPathname (NULL, Op); 610 } 611 } 612 break; 613 } 614 615 switch (Op->Common.AmlOpcode) 616 { 617 case AML_METHOD_OP: 618 619 AcpiDmMethodFlags (Op); 620 AcpiOsPrintf (")"); 621 622 /* Emit description comment for Method() with a predefined ACPI name */ 623 624 AcpiDmPredefinedDescription (Op); 625 break; 626 627 case AML_NAME_OP: 628 629 /* Check for _HID and related EISAID() */ 630 631 AcpiDmCheckForHardwareId (Op); 632 AcpiOsPrintf (", "); 633 break; 634 635 case AML_REGION_OP: 636 637 AcpiDmRegionFlags (Op); 638 break; 639 640 case AML_POWER_RES_OP: 641 642 /* Mark the next two Ops as part of the parameter list */ 643 644 AcpiOsPrintf (", "); 645 NextOp = AcpiPsGetDepthNext (NULL, Op); 646 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 647 648 NextOp = NextOp->Common.Next; 649 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 650 return (AE_OK); 651 652 case AML_PROCESSOR_OP: 653 654 /* Mark the next three Ops as part of the parameter list */ 655 656 AcpiOsPrintf (", "); 657 NextOp = AcpiPsGetDepthNext (NULL, Op); 658 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 659 660 NextOp = NextOp->Common.Next; 661 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 662 663 NextOp = NextOp->Common.Next; 664 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 665 return (AE_OK); 666 667 case AML_MUTEX_OP: 668 case AML_DATA_REGION_OP: 669 670 AcpiOsPrintf (", "); 671 return (AE_OK); 672 673 case AML_EVENT_OP: 674 case AML_ALIAS_OP: 675 676 return (AE_OK); 677 678 case AML_SCOPE_OP: 679 case AML_DEVICE_OP: 680 case AML_THERMAL_ZONE_OP: 681 682 AcpiOsPrintf (")"); 683 break; 684 685 default: 686 687 AcpiOsPrintf ("*** Unhandled named opcode %X\n", 688 Op->Common.AmlOpcode); 689 break; 690 } 691 } 692 693 else switch (Op->Common.AmlOpcode) 694 { 695 case AML_FIELD_OP: 696 case AML_BANK_FIELD_OP: 697 case AML_INDEX_FIELD_OP: 698 699 Info->BitOffset = 0; 700 701 /* Name of the parent OperationRegion */ 702 703 NextOp = AcpiPsGetDepthNext (NULL, Op); 704 AcpiDmNamestring (NextOp->Common.Value.Name); 705 AcpiOsPrintf (", "); 706 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 707 708 switch (Op->Common.AmlOpcode) 709 { 710 case AML_BANK_FIELD_OP: 711 712 /* Namestring - Bank Name */ 713 714 NextOp = AcpiPsGetDepthNext (NULL, NextOp); 715 AcpiDmNamestring (NextOp->Common.Value.Name); 716 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 717 AcpiOsPrintf (", "); 718 719 /* 720 * Bank Value. This is a TermArg in the middle of the parameter 721 * list, must handle it here. 722 * 723 * Disassemble the TermArg parse tree. ACPI_PARSEOP_PARAMLIST 724 * eliminates newline in the output. 725 */ 726 NextOp = NextOp->Common.Next; 727 728 Info->Flags = ACPI_PARSEOP_PARAMLIST; 729 AcpiDmWalkParseTree (NextOp, AcpiDmDescendingOp, 730 AcpiDmAscendingOp, Info); 731 Info->Flags = 0; 732 Info->Level = Level; 733 734 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 735 AcpiOsPrintf (", "); 736 break; 737 738 case AML_INDEX_FIELD_OP: 739 740 /* Namestring - Data Name */ 741 742 NextOp = AcpiPsGetDepthNext (NULL, NextOp); 743 AcpiDmNamestring (NextOp->Common.Value.Name); 744 AcpiOsPrintf (", "); 745 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 746 break; 747 748 default: 749 750 break; 751 } 752 753 AcpiDmFieldFlags (NextOp); 754 break; 755 756 case AML_BUFFER_OP: 757 758 /* The next op is the size parameter */ 759 760 NextOp = AcpiPsGetDepthNext (NULL, Op); 761 if (!NextOp) 762 { 763 /* Single-step support */ 764 765 return (AE_OK); 766 } 767 768 if (Op->Common.DisasmOpcode == ACPI_DASM_RESOURCE) 769 { 770 /* 771 * We have a resource list. Don't need to output 772 * the buffer size Op. Open up a new block 773 */ 774 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 775 NextOp = NextOp->Common.Next; 776 AcpiOsPrintf (")"); 777 778 /* Emit description comment for Name() with a predefined ACPI name */ 779 780 AcpiDmPredefinedDescription (Op->Asl.Parent); 781 782 AcpiOsPrintf ("\n"); 783 AcpiDmIndent (Info->Level); 784 AcpiOsPrintf ("{\n"); 785 return (AE_OK); 786 } 787 788 /* Normal Buffer, mark size as in the parameter list */ 789 790 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 791 return (AE_OK); 792 793 case AML_VAR_PACKAGE_OP: 794 case AML_IF_OP: 795 case AML_WHILE_OP: 796 797 /* The next op is the size or predicate parameter */ 798 799 NextOp = AcpiPsGetDepthNext (NULL, Op); 800 if (NextOp) 801 { 802 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 803 } 804 return (AE_OK); 805 806 case AML_PACKAGE_OP: 807 808 /* The next op is the size parameter */ 809 810 NextOp = AcpiPsGetDepthNext (NULL, Op); 811 if (NextOp) 812 { 813 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 814 } 815 return (AE_OK); 816 817 case AML_MATCH_OP: 818 819 AcpiDmMatchOp (Op); 820 break; 821 822 default: 823 824 break; 825 } 826 827 if (AcpiDmBlockType (Op) & BLOCK_BRACE) 828 { 829 AcpiOsPrintf ("\n"); 830 AcpiDmIndent (Level); 831 AcpiOsPrintf ("{\n"); 832 } 833 } 834 835 return (AE_OK); 836 } 837 838 839 /******************************************************************************* 840 * 841 * FUNCTION: AcpiDmAscendingOp 842 * 843 * PARAMETERS: ASL_WALK_CALLBACK 844 * 845 * RETURN: Status 846 * 847 * DESCRIPTION: Second visitation of a parse object, during ascent of parse 848 * tree. Close out any parameter lists and complete the opcode. 849 * 850 ******************************************************************************/ 851 852 static ACPI_STATUS 853 AcpiDmAscendingOp ( 854 ACPI_PARSE_OBJECT *Op, 855 UINT32 Level, 856 void *Context) 857 { 858 ACPI_OP_WALK_INFO *Info = Context; 859 ACPI_PARSE_OBJECT *ParentOp; 860 861 862 if (Op->Common.DisasmFlags & ACPI_PARSEOP_IGNORE) 863 { 864 /* Ignore this op -- it was handled elsewhere */ 865 866 return (AE_OK); 867 } 868 869 if ((Level == 0) && (Op->Common.AmlOpcode == AML_SCOPE_OP)) 870 { 871 /* Indicates the end of the current descriptor block (table) */ 872 873 AcpiOsPrintf ("}\n\n"); 874 return (AE_OK); 875 } 876 877 switch (AcpiDmBlockType (Op)) 878 { 879 case BLOCK_PAREN: 880 881 /* Completed an op that has arguments, add closing paren if needed */ 882 883 AcpiDmCloseOperator (Op); 884 885 if (Op->Common.AmlOpcode == AML_NAME_OP) 886 { 887 /* Emit description comment for Name() with a predefined ACPI name */ 888 889 AcpiDmPredefinedDescription (Op); 890 } 891 else 892 { 893 /* For Create* operators, attempt to emit resource tag description */ 894 895 AcpiDmFieldPredefinedDescription (Op); 896 } 897 898 /* Decode Notify() values */ 899 900 if (Op->Common.AmlOpcode == AML_NOTIFY_OP) 901 { 902 AcpiDmNotifyDescription (Op); 903 } 904 905 AcpiDmDisplayTargetPathname (Op); 906 907 /* Could be a nested operator, check if comma required */ 908 909 if (!AcpiDmCommaIfListMember (Op)) 910 { 911 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 912 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) && 913 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 914 { 915 /* 916 * This is a first-level element of a term list 917 * start a new line 918 */ 919 if (!(Info->Flags & ACPI_PARSEOP_PARAMLIST)) 920 { 921 AcpiOsPrintf ("\n"); 922 } 923 } 924 } 925 break; 926 927 case BLOCK_BRACE: 928 case (BLOCK_BRACE | BLOCK_PAREN): 929 930 /* Completed an op that has a term list, add closing brace */ 931 932 if (Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST) 933 { 934 AcpiOsPrintf ("}"); 935 } 936 else 937 { 938 AcpiDmIndent (Level); 939 AcpiOsPrintf ("}"); 940 } 941 942 AcpiDmCommaIfListMember (Op); 943 944 if (AcpiDmBlockType (Op->Common.Parent) != BLOCK_PAREN) 945 { 946 AcpiOsPrintf ("\n"); 947 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST)) 948 { 949 if ((Op->Common.AmlOpcode == AML_IF_OP) && 950 (Op->Common.Next) && 951 (Op->Common.Next->Common.AmlOpcode == AML_ELSE_OP)) 952 { 953 break; 954 } 955 956 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 957 (!Op->Common.Next)) 958 { 959 break; 960 } 961 AcpiOsPrintf ("\n"); 962 } 963 } 964 break; 965 966 case BLOCK_NONE: 967 default: 968 969 /* Could be a nested operator, check if comma required */ 970 971 if (!AcpiDmCommaIfListMember (Op)) 972 { 973 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 974 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) && 975 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 976 { 977 /* 978 * This is a first-level element of a term list 979 * start a new line 980 */ 981 AcpiOsPrintf ("\n"); 982 } 983 } 984 else if (Op->Common.Parent) 985 { 986 switch (Op->Common.Parent->Common.AmlOpcode) 987 { 988 case AML_PACKAGE_OP: 989 case AML_VAR_PACKAGE_OP: 990 991 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) 992 { 993 AcpiOsPrintf ("\n"); 994 } 995 break; 996 997 default: 998 999 break; 1000 } 1001 } 1002 break; 1003 } 1004 1005 if (Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST) 1006 { 1007 if ((Op->Common.Next) && 1008 (Op->Common.Next->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) 1009 { 1010 return (AE_OK); 1011 } 1012 1013 /* 1014 * The parent Op is guaranteed to be valid because of the flag 1015 * ACPI_PARSEOP_PARAMLIST -- which means that this op is part of 1016 * a parameter list and thus has a valid parent. 1017 */ 1018 ParentOp = Op->Common.Parent; 1019 1020 /* 1021 * Just completed a parameter node for something like "Buffer (param)". 1022 * Close the paren and open up the term list block with a brace 1023 */ 1024 if (Op->Common.Next) 1025 { 1026 AcpiOsPrintf (")"); 1027 1028 /* 1029 * Emit a description comment for a Name() operator that is a 1030 * predefined ACPI name. Must check the grandparent. 1031 */ 1032 ParentOp = ParentOp->Common.Parent; 1033 if (ParentOp && 1034 (ParentOp->Asl.AmlOpcode == AML_NAME_OP)) 1035 { 1036 AcpiDmPredefinedDescription (ParentOp); 1037 } 1038 1039 AcpiOsPrintf ("\n"); 1040 AcpiDmIndent (Level - 1); 1041 AcpiOsPrintf ("{\n"); 1042 } 1043 else 1044 { 1045 ParentOp->Common.DisasmFlags |= ACPI_PARSEOP_EMPTY_TERMLIST; 1046 AcpiOsPrintf (") {"); 1047 } 1048 } 1049 1050 if ((Op->Common.AmlOpcode == AML_NAME_OP) || 1051 (Op->Common.AmlOpcode == AML_RETURN_OP)) 1052 { 1053 Info->Level++; 1054 } 1055 1056 /* 1057 * For ASL+, check for and emit a C-style symbol. If valid, the 1058 * symbol string has been deferred until after the first operand 1059 */ 1060 if (AcpiGbl_CstyleDisassembly) 1061 { 1062 if (Op->Asl.OperatorSymbol) 1063 { 1064 AcpiOsPrintf ("%s", Op->Asl.OperatorSymbol); 1065 Op->Asl.OperatorSymbol = NULL; 1066 } 1067 } 1068 1069 return (AE_OK); 1070 } 1071 1072 #endif /* ACPI_DISASSEMBLER */ 1073