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_PARAMETER_LIST; 466 467 /* Don't emit the actual embedded externals unless asked */ 468 469 if (!AcpiGbl_DmEmitExternalOpcodes) 470 { 471 /* 472 * A Zero predicate indicates the possibility of one or more 473 * External() opcodes within the If() block. 474 */ 475 if (NextOp->Common.AmlOpcode == AML_ZERO_OP) 476 { 477 NextOp2 = NextOp->Common.Next; 478 479 if (NextOp2 && 480 (NextOp2->Common.AmlOpcode == AML_EXTERNAL_OP)) 481 { 482 /* Ignore the If 0 block and all children */ 483 484 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 485 return (AE_CTRL_DEPTH); 486 } 487 } 488 } 489 } 490 } 491 492 /* Level 0 is at the Definition Block level */ 493 494 if (Level == 0) 495 { 496 /* In verbose mode, print the AML offset, opcode and depth count */ 497 498 if (Info->WalkState) 499 { 500 AmlOffset = (UINT32) ACPI_PTR_DIFF (Op->Common.Aml, 501 Info->WalkState->ParserState.AmlStart); 502 if (AcpiGbl_DmOpt_Verbose) 503 { 504 AcpiOsPrintf (DB_FULL_OP_INFO, 505 (Info->WalkState->MethodNode ? 506 Info->WalkState->MethodNode->Name.Ascii : " "), 507 AmlOffset, (UINT32) Op->Common.AmlOpcode); 508 } 509 } 510 511 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 512 { 513 /* This is the beginning of the Definition Block */ 514 515 AcpiOsPrintf ("{\n"); 516 517 /* Emit all External() declarations here */ 518 519 AcpiDmEmitExternals (); 520 return (AE_OK); 521 } 522 } 523 else if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 524 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)) && 525 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_ELSEIF)) && 526 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 527 { 528 /* 529 * This is a first-level element of a term list, 530 * indent a new line 531 */ 532 switch (Op->Common.AmlOpcode) 533 { 534 case AML_NOOP_OP: 535 /* 536 * Optionally just ignore this opcode. Some tables use 537 * NoOp opcodes for "padding" out packages that the BIOS 538 * changes dynamically. This can leave hundreds or 539 * thousands of NoOp opcodes that if disassembled, 540 * cannot be compiled because they are syntactically 541 * incorrect. 542 */ 543 if (AcpiGbl_IgnoreNoopOperator) 544 { 545 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 546 return (AE_OK); 547 } 548 549 /* Fallthrough */ 550 551 default: 552 553 AcpiDmIndent (Level); 554 break; 555 } 556 557 Info->LastLevel = Level; 558 Info->Count = 0; 559 } 560 561 /* 562 * This is an inexpensive mechanism to try and keep lines from getting 563 * too long. When the limit is hit, start a new line at the previous 564 * indent plus one. A better but more expensive mechanism would be to 565 * keep track of the current column. 566 */ 567 Info->Count++; 568 if (Info->Count /* +Info->LastLevel */ > 12) 569 { 570 Info->Count = 0; 571 AcpiOsPrintf ("\n"); 572 AcpiDmIndent (Info->LastLevel + 1); 573 } 574 575 /* If ASL+ is enabled, check for a C-style operator */ 576 577 if (AcpiDmCheckForSymbolicOpcode (Op, Info)) 578 { 579 return (AE_OK); 580 } 581 582 /* Print the opcode name */ 583 584 AcpiDmDisassembleOneOp (NULL, Info, Op); 585 586 if ((Op->Common.DisasmOpcode == ACPI_DASM_LNOT_PREFIX) || 587 (Op->Common.AmlOpcode == AML_INT_CONNECTION_OP)) 588 { 589 return (AE_OK); 590 } 591 592 if ((Op->Common.AmlOpcode == AML_NAME_OP) || 593 (Op->Common.AmlOpcode == AML_RETURN_OP)) 594 { 595 Info->Level--; 596 } 597 598 /* Start the opcode argument list if necessary */ 599 600 if ((OpInfo->Flags & AML_HAS_ARGS) || 601 (Op->Common.AmlOpcode == AML_EVENT_OP)) 602 { 603 /* This opcode has an argument list */ 604 605 if (AcpiDmBlockType (Op) & BLOCK_PAREN) 606 { 607 AcpiOsPrintf (" ("); 608 } 609 610 /* If this is a named opcode, print the associated name value */ 611 612 if (OpInfo->Flags & AML_NAMED) 613 { 614 switch (Op->Common.AmlOpcode) 615 { 616 case AML_ALIAS_OP: 617 618 NextOp = AcpiPsGetDepthNext (NULL, Op); 619 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 620 AcpiDmNamestring (NextOp->Common.Value.Name); 621 AcpiOsPrintf (", "); 622 623 /*lint -fallthrough */ 624 625 default: 626 627 Name = AcpiPsGetName (Op); 628 if (Op->Named.Path) 629 { 630 AcpiDmNamestring ((char *) Op->Named.Path); 631 } 632 else 633 { 634 AcpiDmDumpName (Name); 635 } 636 637 if (Op->Common.AmlOpcode != AML_INT_NAMEDFIELD_OP) 638 { 639 if (AcpiGbl_DmOpt_Verbose) 640 { 641 (void) AcpiPsDisplayObjectPathname (NULL, Op); 642 } 643 } 644 break; 645 } 646 647 switch (Op->Common.AmlOpcode) 648 { 649 case AML_METHOD_OP: 650 651 AcpiDmMethodFlags (Op); 652 AcpiOsPrintf (")"); 653 654 /* Emit description comment for Method() with a predefined ACPI name */ 655 656 AcpiDmPredefinedDescription (Op); 657 break; 658 659 case AML_NAME_OP: 660 661 /* Check for _HID and related EISAID() */ 662 663 AcpiDmCheckForHardwareId (Op); 664 AcpiOsPrintf (", "); 665 break; 666 667 case AML_REGION_OP: 668 669 AcpiDmRegionFlags (Op); 670 break; 671 672 case AML_POWER_RES_OP: 673 674 /* Mark the next two Ops as part of the parameter list */ 675 676 AcpiOsPrintf (", "); 677 NextOp = AcpiPsGetDepthNext (NULL, Op); 678 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST; 679 680 NextOp = NextOp->Common.Next; 681 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST; 682 return (AE_OK); 683 684 case AML_PROCESSOR_OP: 685 686 /* Mark the next three Ops as part of the parameter list */ 687 688 AcpiOsPrintf (", "); 689 NextOp = AcpiPsGetDepthNext (NULL, Op); 690 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST; 691 692 NextOp = NextOp->Common.Next; 693 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST; 694 695 NextOp = NextOp->Common.Next; 696 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST; 697 return (AE_OK); 698 699 case AML_MUTEX_OP: 700 case AML_DATA_REGION_OP: 701 702 AcpiOsPrintf (", "); 703 return (AE_OK); 704 705 case AML_EVENT_OP: 706 case AML_ALIAS_OP: 707 708 return (AE_OK); 709 710 case AML_SCOPE_OP: 711 case AML_DEVICE_OP: 712 case AML_THERMAL_ZONE_OP: 713 714 AcpiOsPrintf (")"); 715 break; 716 717 default: 718 719 AcpiOsPrintf ("*** Unhandled named opcode %X\n", 720 Op->Common.AmlOpcode); 721 break; 722 } 723 } 724 725 else switch (Op->Common.AmlOpcode) 726 { 727 case AML_FIELD_OP: 728 case AML_BANK_FIELD_OP: 729 case AML_INDEX_FIELD_OP: 730 731 Info->BitOffset = 0; 732 733 /* Name of the parent OperationRegion */ 734 735 NextOp = AcpiPsGetDepthNext (NULL, Op); 736 AcpiDmNamestring (NextOp->Common.Value.Name); 737 AcpiOsPrintf (", "); 738 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 739 740 switch (Op->Common.AmlOpcode) 741 { 742 case AML_BANK_FIELD_OP: 743 744 /* Namestring - Bank Name */ 745 746 NextOp = AcpiPsGetDepthNext (NULL, NextOp); 747 AcpiDmNamestring (NextOp->Common.Value.Name); 748 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 749 AcpiOsPrintf (", "); 750 751 /* 752 * Bank Value. This is a TermArg in the middle of the parameter 753 * list, must handle it here. 754 * 755 * Disassemble the TermArg parse tree. ACPI_PARSEOP_PARAMETER_LIST 756 * eliminates newline in the output. 757 */ 758 NextOp = NextOp->Common.Next; 759 760 Info->Flags = ACPI_PARSEOP_PARAMETER_LIST; 761 AcpiDmWalkParseTree (NextOp, AcpiDmDescendingOp, 762 AcpiDmAscendingOp, Info); 763 Info->Flags = 0; 764 Info->Level = Level; 765 766 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 767 AcpiOsPrintf (", "); 768 break; 769 770 case AML_INDEX_FIELD_OP: 771 772 /* Namestring - Data Name */ 773 774 NextOp = AcpiPsGetDepthNext (NULL, NextOp); 775 AcpiDmNamestring (NextOp->Common.Value.Name); 776 AcpiOsPrintf (", "); 777 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 778 break; 779 780 default: 781 782 break; 783 } 784 785 AcpiDmFieldFlags (NextOp); 786 break; 787 788 case AML_BUFFER_OP: 789 790 /* The next op is the size parameter */ 791 792 NextOp = AcpiPsGetDepthNext (NULL, Op); 793 if (!NextOp) 794 { 795 /* Single-step support */ 796 797 return (AE_OK); 798 } 799 800 if (Op->Common.DisasmOpcode == ACPI_DASM_RESOURCE) 801 { 802 /* 803 * We have a resource list. Don't need to output 804 * the buffer size Op. Open up a new block 805 */ 806 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 807 NextOp = NextOp->Common.Next; 808 AcpiOsPrintf (")"); 809 810 /* Emit description comment for Name() with a predefined ACPI name */ 811 812 AcpiDmPredefinedDescription (Op->Asl.Parent); 813 814 AcpiOsPrintf ("\n"); 815 AcpiDmIndent (Info->Level); 816 AcpiOsPrintf ("{\n"); 817 return (AE_OK); 818 } 819 820 /* Normal Buffer, mark size as in the parameter list */ 821 822 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST; 823 return (AE_OK); 824 825 case AML_IF_OP: 826 case AML_VAR_PACKAGE_OP: 827 case AML_WHILE_OP: 828 829 /* The next op is the size or predicate parameter */ 830 831 NextOp = AcpiPsGetDepthNext (NULL, Op); 832 if (NextOp) 833 { 834 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST; 835 } 836 return (AE_OK); 837 838 case AML_PACKAGE_OP: 839 840 /* The next op is the size parameter */ 841 842 NextOp = AcpiPsGetDepthNext (NULL, Op); 843 if (NextOp) 844 { 845 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMETER_LIST; 846 } 847 return (AE_OK); 848 849 case AML_MATCH_OP: 850 851 AcpiDmMatchOp (Op); 852 break; 853 854 default: 855 856 break; 857 } 858 859 if (AcpiDmBlockType (Op) & BLOCK_BRACE) 860 { 861 AcpiOsPrintf ("\n"); 862 AcpiDmIndent (Level); 863 AcpiOsPrintf ("{\n"); 864 } 865 } 866 867 return (AE_OK); 868 } 869 870 871 /******************************************************************************* 872 * 873 * FUNCTION: AcpiDmAscendingOp 874 * 875 * PARAMETERS: ASL_WALK_CALLBACK 876 * 877 * RETURN: Status 878 * 879 * DESCRIPTION: Second visitation of a parse object, during ascent of parse 880 * tree. Close out any parameter lists and complete the opcode. 881 * 882 ******************************************************************************/ 883 884 static ACPI_STATUS 885 AcpiDmAscendingOp ( 886 ACPI_PARSE_OBJECT *Op, 887 UINT32 Level, 888 void *Context) 889 { 890 ACPI_OP_WALK_INFO *Info = Context; 891 ACPI_PARSE_OBJECT *ParentOp; 892 893 894 if (Op->Common.DisasmFlags & ACPI_PARSEOP_IGNORE) 895 { 896 /* Ignore this op -- it was handled elsewhere */ 897 898 return (AE_OK); 899 } 900 901 if ((Level == 0) && (Op->Common.AmlOpcode == AML_SCOPE_OP)) 902 { 903 /* Indicates the end of the current descriptor block (table) */ 904 905 AcpiOsPrintf ("}\n\n"); 906 return (AE_OK); 907 } 908 909 switch (AcpiDmBlockType (Op)) 910 { 911 case BLOCK_PAREN: 912 913 /* Completed an op that has arguments, add closing paren if needed */ 914 915 AcpiDmCloseOperator (Op); 916 917 if (Op->Common.AmlOpcode == AML_NAME_OP) 918 { 919 /* Emit description comment for Name() with a predefined ACPI name */ 920 921 AcpiDmPredefinedDescription (Op); 922 } 923 else 924 { 925 /* For Create* operators, attempt to emit resource tag description */ 926 927 AcpiDmFieldPredefinedDescription (Op); 928 } 929 930 /* Decode Notify() values */ 931 932 if (Op->Common.AmlOpcode == AML_NOTIFY_OP) 933 { 934 AcpiDmNotifyDescription (Op); 935 } 936 937 AcpiDmDisplayTargetPathname (Op); 938 939 /* Could be a nested operator, check if comma required */ 940 941 if (!AcpiDmCommaIfListMember (Op)) 942 { 943 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 944 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)) && 945 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 946 { 947 /* 948 * This is a first-level element of a term list 949 * start a new line 950 */ 951 if (!(Info->Flags & ACPI_PARSEOP_PARAMETER_LIST)) 952 { 953 AcpiOsPrintf ("\n"); 954 } 955 } 956 } 957 break; 958 959 case BLOCK_BRACE: 960 case (BLOCK_BRACE | BLOCK_PAREN): 961 962 /* Completed an op that has a term list, add closing brace */ 963 964 if (Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST) 965 { 966 AcpiOsPrintf ("}"); 967 } 968 else 969 { 970 AcpiDmIndent (Level); 971 AcpiOsPrintf ("}"); 972 } 973 974 AcpiDmCommaIfListMember (Op); 975 976 if (AcpiDmBlockType (Op->Common.Parent) != BLOCK_PAREN) 977 { 978 AcpiOsPrintf ("\n"); 979 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST)) 980 { 981 if ((Op->Common.AmlOpcode == AML_IF_OP) && 982 (Op->Common.Next) && 983 (Op->Common.Next->Common.AmlOpcode == AML_ELSE_OP)) 984 { 985 break; 986 } 987 988 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 989 (!Op->Common.Next)) 990 { 991 break; 992 } 993 AcpiOsPrintf ("\n"); 994 } 995 } 996 break; 997 998 case BLOCK_NONE: 999 default: 1000 1001 /* Could be a nested operator, check if comma required */ 1002 1003 if (!AcpiDmCommaIfListMember (Op)) 1004 { 1005 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 1006 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)) && 1007 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 1008 { 1009 /* 1010 * This is a first-level element of a term list 1011 * start a new line 1012 */ 1013 AcpiOsPrintf ("\n"); 1014 } 1015 } 1016 else if (Op->Common.Parent) 1017 { 1018 switch (Op->Common.Parent->Common.AmlOpcode) 1019 { 1020 case AML_PACKAGE_OP: 1021 case AML_VAR_PACKAGE_OP: 1022 1023 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)) 1024 { 1025 AcpiOsPrintf ("\n"); 1026 } 1027 break; 1028 1029 default: 1030 1031 break; 1032 } 1033 } 1034 break; 1035 } 1036 1037 if (Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST) 1038 { 1039 if ((Op->Common.Next) && 1040 (Op->Common.Next->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)) 1041 { 1042 return (AE_OK); 1043 } 1044 1045 /* 1046 * The parent Op is guaranteed to be valid because of the flag 1047 * ACPI_PARSEOP_PARAMETER_LIST -- which means that this op is part of 1048 * a parameter list and thus has a valid parent. 1049 */ 1050 ParentOp = Op->Common.Parent; 1051 1052 /* 1053 * Just completed a parameter node for something like "Buffer (param)". 1054 * Close the paren and open up the term list block with a brace 1055 */ 1056 if (Op->Common.Next) 1057 { 1058 AcpiOsPrintf (")"); 1059 1060 /* 1061 * Emit a description comment for a Name() operator that is a 1062 * predefined ACPI name. Must check the grandparent. 1063 */ 1064 ParentOp = ParentOp->Common.Parent; 1065 if (ParentOp && 1066 (ParentOp->Asl.AmlOpcode == AML_NAME_OP)) 1067 { 1068 AcpiDmPredefinedDescription (ParentOp); 1069 } 1070 1071 AcpiOsPrintf ("\n"); 1072 AcpiDmIndent (Level - 1); 1073 AcpiOsPrintf ("{\n"); 1074 } 1075 else 1076 { 1077 ParentOp->Common.DisasmFlags |= ACPI_PARSEOP_EMPTY_TERMLIST; 1078 AcpiOsPrintf (") {"); 1079 } 1080 } 1081 1082 if ((Op->Common.AmlOpcode == AML_NAME_OP) || 1083 (Op->Common.AmlOpcode == AML_RETURN_OP)) 1084 { 1085 Info->Level++; 1086 } 1087 1088 /* 1089 * For ASL+, check for and emit a C-style symbol. If valid, the 1090 * symbol string has been deferred until after the first operand 1091 */ 1092 if (AcpiGbl_CstyleDisassembly) 1093 { 1094 if (Op->Asl.OperatorSymbol) 1095 { 1096 AcpiOsPrintf ("%s", Op->Asl.OperatorSymbol); 1097 Op->Asl.OperatorSymbol = NULL; 1098 } 1099 } 1100 1101 return (AE_OK); 1102 } 1103 1104 #endif /* ACPI_DISASSEMBLER */ 1105