1 /******************************************************************************* 2 * 3 * Module Name: dmwalk - AML disassembly tree walk 4 * 5 ******************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2015, 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 <contrib/dev/acpica/include/acpi.h> 45 #include <contrib/dev/acpica/include/accommon.h> 46 #include <contrib/dev/acpica/include/acparser.h> 47 #include <contrib/dev/acpica/include/amlcode.h> 48 #include <contrib/dev/acpica/include/acdisasm.h> 49 #include <contrib/dev/acpica/include/acdebug.h> 50 51 52 #ifdef ACPI_DISASSEMBLER 53 54 #define _COMPONENT ACPI_CA_DEBUGGER 55 ACPI_MODULE_NAME ("dmwalk") 56 57 58 #define DB_FULL_OP_INFO "[%4.4s] @%5.5X #%4.4X: " 59 60 /* Stub for non-compiler code */ 61 62 #ifndef ACPI_ASL_COMPILER 63 void 64 AcpiDmEmitExternals ( 65 void) 66 { 67 return; 68 } 69 #endif 70 71 /* Local prototypes */ 72 73 static ACPI_STATUS 74 AcpiDmDescendingOp ( 75 ACPI_PARSE_OBJECT *Op, 76 UINT32 Level, 77 void *Context); 78 79 static ACPI_STATUS 80 AcpiDmAscendingOp ( 81 ACPI_PARSE_OBJECT *Op, 82 UINT32 Level, 83 void *Context); 84 85 static UINT32 86 AcpiDmBlockType ( 87 ACPI_PARSE_OBJECT *Op); 88 89 90 /******************************************************************************* 91 * 92 * FUNCTION: AcpiDmDisassemble 93 * 94 * PARAMETERS: WalkState - Current state 95 * Origin - Starting object 96 * NumOpcodes - Max number of opcodes to be displayed 97 * 98 * RETURN: None 99 * 100 * DESCRIPTION: Disassemble parser object and its children. This is the 101 * main entry point of the disassembler. 102 * 103 ******************************************************************************/ 104 105 void 106 AcpiDmDisassemble ( 107 ACPI_WALK_STATE *WalkState, 108 ACPI_PARSE_OBJECT *Origin, 109 UINT32 NumOpcodes) 110 { 111 ACPI_PARSE_OBJECT *Op = Origin; 112 ACPI_OP_WALK_INFO Info; 113 114 115 if (!Op) 116 { 117 return; 118 } 119 120 Info.Flags = 0; 121 Info.Level = 0; 122 Info.Count = 0; 123 Info.WalkState = WalkState; 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 default: 317 318 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 319 if (OpInfo->Flags & AML_HAS_ARGS) 320 { 321 return (BLOCK_PAREN); 322 } 323 324 return (BLOCK_NONE); 325 } 326 } 327 328 329 /******************************************************************************* 330 * 331 * FUNCTION: AcpiDmListType 332 * 333 * PARAMETERS: Op - Object to be examined 334 * 335 * RETURN: ListType - has commas or not. 336 * 337 * DESCRIPTION: Type of block for this op (parens or braces) 338 * 339 ******************************************************************************/ 340 341 UINT32 342 AcpiDmListType ( 343 ACPI_PARSE_OBJECT *Op) 344 { 345 const ACPI_OPCODE_INFO *OpInfo; 346 347 348 if (!Op) 349 { 350 return (BLOCK_NONE); 351 } 352 353 switch (Op->Common.AmlOpcode) 354 { 355 356 case AML_ELSE_OP: 357 case AML_METHOD_OP: 358 case AML_DEVICE_OP: 359 case AML_SCOPE_OP: 360 case AML_POWER_RES_OP: 361 case AML_PROCESSOR_OP: 362 case AML_THERMAL_ZONE_OP: 363 case AML_IF_OP: 364 case AML_WHILE_OP: 365 case AML_FIELD_OP: 366 case AML_INDEX_FIELD_OP: 367 case AML_BANK_FIELD_OP: 368 369 return (BLOCK_NONE); 370 371 case AML_BUFFER_OP: 372 case AML_PACKAGE_OP: 373 case AML_VAR_PACKAGE_OP: 374 375 return (BLOCK_COMMA_LIST); 376 377 default: 378 379 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 380 if (OpInfo->Flags & AML_HAS_ARGS) 381 { 382 return (BLOCK_COMMA_LIST); 383 } 384 385 return (BLOCK_NONE); 386 } 387 } 388 389 390 /******************************************************************************* 391 * 392 * FUNCTION: AcpiDmDescendingOp 393 * 394 * PARAMETERS: ASL_WALK_CALLBACK 395 * 396 * RETURN: Status 397 * 398 * DESCRIPTION: First visitation of a parse object during tree descent. 399 * Decode opcode name and begin parameter list(s), if any. 400 * 401 ******************************************************************************/ 402 403 static ACPI_STATUS 404 AcpiDmDescendingOp ( 405 ACPI_PARSE_OBJECT *Op, 406 UINT32 Level, 407 void *Context) 408 { 409 ACPI_OP_WALK_INFO *Info = Context; 410 const ACPI_OPCODE_INFO *OpInfo; 411 UINT32 Name; 412 ACPI_PARSE_OBJECT *NextOp; 413 414 415 if (Op->Common.DisasmFlags & ACPI_PARSEOP_IGNORE) 416 { 417 /* Ignore this op -- it was handled elsewhere */ 418 419 return (AE_CTRL_DEPTH); 420 } 421 422 /* Level 0 is at the Definition Block level */ 423 424 if (Level == 0) 425 { 426 /* In verbose mode, print the AML offset, opcode and depth count */ 427 428 if (Info->WalkState) 429 { 430 VERBOSE_PRINT ((DB_FULL_OP_INFO, 431 (Info->WalkState->MethodNode ? 432 Info->WalkState->MethodNode->Name.Ascii : " "), 433 Op->Common.AmlOffset, (UINT32) Op->Common.AmlOpcode)); 434 } 435 436 if (Op->Common.AmlOpcode == AML_SCOPE_OP) 437 { 438 /* This is the beginning of the Definition Block */ 439 440 AcpiOsPrintf ("{\n"); 441 442 /* Emit all External() declarations here */ 443 444 AcpiDmEmitExternals (); 445 return (AE_OK); 446 } 447 } 448 else if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 449 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) && 450 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 451 { 452 /* 453 * This is a first-level element of a term list, 454 * indent a new line 455 */ 456 switch (Op->Common.AmlOpcode) 457 { 458 case AML_NOOP_OP: 459 /* 460 * Optionally just ignore this opcode. Some tables use 461 * NoOp opcodes for "padding" out packages that the BIOS 462 * changes dynamically. This can leave hundreds or 463 * thousands of NoOp opcodes that if disassembled, 464 * cannot be compiled because they are syntactically 465 * incorrect. 466 */ 467 if (AcpiGbl_IgnoreNoopOperator) 468 { 469 Op->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 470 return (AE_OK); 471 } 472 473 /* Fallthrough */ 474 475 default: 476 477 AcpiDmIndent (Level); 478 break; 479 } 480 481 Info->LastLevel = Level; 482 Info->Count = 0; 483 } 484 485 /* 486 * This is an inexpensive mechanism to try and keep lines from getting 487 * too long. When the limit is hit, start a new line at the previous 488 * indent plus one. A better but more expensive mechanism would be to 489 * keep track of the current column. 490 */ 491 Info->Count++; 492 if (Info->Count /* +Info->LastLevel */ > 12) 493 { 494 Info->Count = 0; 495 AcpiOsPrintf ("\n"); 496 AcpiDmIndent (Info->LastLevel + 1); 497 } 498 499 /* If ASL+ is enabled, check for a C-style operator */ 500 501 if (AcpiDmCheckForSymbolicOpcode (Op, Info)) 502 { 503 return (AE_OK); 504 } 505 506 /* Print the opcode name */ 507 508 AcpiDmDisassembleOneOp (NULL, Info, Op); 509 510 if ((Op->Common.DisasmOpcode == ACPI_DASM_LNOT_PREFIX) || 511 (Op->Common.AmlOpcode == AML_INT_CONNECTION_OP)) 512 { 513 return (AE_OK); 514 } 515 516 if ((Op->Common.AmlOpcode == AML_NAME_OP) || 517 (Op->Common.AmlOpcode == AML_RETURN_OP)) 518 { 519 Info->Level--; 520 } 521 522 /* Start the opcode argument list if necessary */ 523 524 OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); 525 526 if ((OpInfo->Flags & AML_HAS_ARGS) || 527 (Op->Common.AmlOpcode == AML_EVENT_OP)) 528 { 529 /* This opcode has an argument list */ 530 531 if (AcpiDmBlockType (Op) & BLOCK_PAREN) 532 { 533 AcpiOsPrintf (" ("); 534 } 535 536 /* If this is a named opcode, print the associated name value */ 537 538 if (OpInfo->Flags & AML_NAMED) 539 { 540 switch (Op->Common.AmlOpcode) 541 { 542 case AML_ALIAS_OP: 543 544 NextOp = AcpiPsGetDepthNext (NULL, Op); 545 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 546 AcpiDmNamestring (NextOp->Common.Value.Name); 547 AcpiOsPrintf (", "); 548 549 /*lint -fallthrough */ 550 551 default: 552 553 Name = AcpiPsGetName (Op); 554 if (Op->Named.Path) 555 { 556 AcpiDmNamestring ((char *) Op->Named.Path); 557 } 558 else 559 { 560 AcpiDmDumpName (Name); 561 } 562 563 if (Op->Common.AmlOpcode != AML_INT_NAMEDFIELD_OP) 564 { 565 if (AcpiGbl_DbOpt_Verbose) 566 { 567 (void) AcpiPsDisplayObjectPathname (NULL, Op); 568 } 569 } 570 break; 571 } 572 573 switch (Op->Common.AmlOpcode) 574 { 575 case AML_METHOD_OP: 576 577 AcpiDmMethodFlags (Op); 578 AcpiOsPrintf (")"); 579 580 /* Emit description comment for Method() with a predefined ACPI name */ 581 582 AcpiDmPredefinedDescription (Op); 583 break; 584 585 case AML_NAME_OP: 586 587 /* Check for _HID and related EISAID() */ 588 589 AcpiDmCheckForHardwareId (Op); 590 AcpiOsPrintf (", "); 591 break; 592 593 case AML_REGION_OP: 594 595 AcpiDmRegionFlags (Op); 596 break; 597 598 case AML_POWER_RES_OP: 599 600 /* Mark the next two Ops as part of the parameter list */ 601 602 AcpiOsPrintf (", "); 603 NextOp = AcpiPsGetDepthNext (NULL, Op); 604 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 605 606 NextOp = NextOp->Common.Next; 607 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 608 return (AE_OK); 609 610 case AML_PROCESSOR_OP: 611 612 /* Mark the next three Ops as part of the parameter list */ 613 614 AcpiOsPrintf (", "); 615 NextOp = AcpiPsGetDepthNext (NULL, Op); 616 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 617 618 NextOp = NextOp->Common.Next; 619 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 620 621 NextOp = NextOp->Common.Next; 622 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 623 return (AE_OK); 624 625 case AML_MUTEX_OP: 626 case AML_DATA_REGION_OP: 627 628 AcpiOsPrintf (", "); 629 return (AE_OK); 630 631 case AML_EVENT_OP: 632 case AML_ALIAS_OP: 633 634 return (AE_OK); 635 636 case AML_SCOPE_OP: 637 case AML_DEVICE_OP: 638 case AML_THERMAL_ZONE_OP: 639 640 AcpiOsPrintf (")"); 641 break; 642 643 default: 644 645 AcpiOsPrintf ("*** Unhandled named opcode %X\n", 646 Op->Common.AmlOpcode); 647 break; 648 } 649 } 650 651 else switch (Op->Common.AmlOpcode) 652 { 653 case AML_FIELD_OP: 654 case AML_BANK_FIELD_OP: 655 case AML_INDEX_FIELD_OP: 656 657 Info->BitOffset = 0; 658 659 /* Name of the parent OperationRegion */ 660 661 NextOp = AcpiPsGetDepthNext (NULL, Op); 662 AcpiDmNamestring (NextOp->Common.Value.Name); 663 AcpiOsPrintf (", "); 664 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 665 666 switch (Op->Common.AmlOpcode) 667 { 668 case AML_BANK_FIELD_OP: 669 670 /* Namestring - Bank Name */ 671 672 NextOp = AcpiPsGetDepthNext (NULL, NextOp); 673 AcpiDmNamestring (NextOp->Common.Value.Name); 674 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 675 AcpiOsPrintf (", "); 676 677 /* 678 * Bank Value. This is a TermArg in the middle of the parameter 679 * list, must handle it here. 680 * 681 * Disassemble the TermArg parse tree. ACPI_PARSEOP_PARAMLIST 682 * eliminates newline in the output. 683 */ 684 NextOp = NextOp->Common.Next; 685 686 Info->Flags = ACPI_PARSEOP_PARAMLIST; 687 AcpiDmWalkParseTree (NextOp, AcpiDmDescendingOp, 688 AcpiDmAscendingOp, Info); 689 Info->Flags = 0; 690 Info->Level = Level; 691 692 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 693 AcpiOsPrintf (", "); 694 break; 695 696 case AML_INDEX_FIELD_OP: 697 698 /* Namestring - Data Name */ 699 700 NextOp = AcpiPsGetDepthNext (NULL, NextOp); 701 AcpiDmNamestring (NextOp->Common.Value.Name); 702 AcpiOsPrintf (", "); 703 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 704 break; 705 706 default: 707 708 break; 709 } 710 711 AcpiDmFieldFlags (NextOp); 712 break; 713 714 case AML_BUFFER_OP: 715 716 /* The next op is the size parameter */ 717 718 NextOp = AcpiPsGetDepthNext (NULL, Op); 719 if (!NextOp) 720 { 721 /* Single-step support */ 722 723 return (AE_OK); 724 } 725 726 if (Op->Common.DisasmOpcode == ACPI_DASM_RESOURCE) 727 { 728 /* 729 * We have a resource list. Don't need to output 730 * the buffer size Op. Open up a new block 731 */ 732 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE; 733 NextOp = NextOp->Common.Next; 734 AcpiOsPrintf (")"); 735 736 /* Emit description comment for Name() with a predefined ACPI name */ 737 738 AcpiDmPredefinedDescription (Op->Asl.Parent); 739 740 AcpiOsPrintf ("\n"); 741 AcpiDmIndent (Info->Level); 742 AcpiOsPrintf ("{\n"); 743 return (AE_OK); 744 } 745 746 /* Normal Buffer, mark size as in the parameter list */ 747 748 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 749 return (AE_OK); 750 751 case AML_VAR_PACKAGE_OP: 752 case AML_IF_OP: 753 case AML_WHILE_OP: 754 755 /* The next op is the size or predicate parameter */ 756 757 NextOp = AcpiPsGetDepthNext (NULL, Op); 758 if (NextOp) 759 { 760 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 761 } 762 return (AE_OK); 763 764 case AML_PACKAGE_OP: 765 766 /* The next op is the size parameter */ 767 768 NextOp = AcpiPsGetDepthNext (NULL, Op); 769 if (NextOp) 770 { 771 NextOp->Common.DisasmFlags |= ACPI_PARSEOP_PARAMLIST; 772 } 773 return (AE_OK); 774 775 case AML_MATCH_OP: 776 777 AcpiDmMatchOp (Op); 778 break; 779 780 default: 781 782 break; 783 } 784 785 if (AcpiDmBlockType (Op) & BLOCK_BRACE) 786 { 787 AcpiOsPrintf ("\n"); 788 AcpiDmIndent (Level); 789 AcpiOsPrintf ("{\n"); 790 } 791 } 792 793 return (AE_OK); 794 } 795 796 797 /******************************************************************************* 798 * 799 * FUNCTION: AcpiDmAscendingOp 800 * 801 * PARAMETERS: ASL_WALK_CALLBACK 802 * 803 * RETURN: Status 804 * 805 * DESCRIPTION: Second visitation of a parse object, during ascent of parse 806 * tree. Close out any parameter lists and complete the opcode. 807 * 808 ******************************************************************************/ 809 810 static ACPI_STATUS 811 AcpiDmAscendingOp ( 812 ACPI_PARSE_OBJECT *Op, 813 UINT32 Level, 814 void *Context) 815 { 816 ACPI_OP_WALK_INFO *Info = Context; 817 ACPI_PARSE_OBJECT *ParentOp; 818 819 820 if (Op->Common.DisasmFlags & ACPI_PARSEOP_IGNORE) 821 { 822 /* Ignore this op -- it was handled elsewhere */ 823 824 return (AE_OK); 825 } 826 827 if ((Level == 0) && (Op->Common.AmlOpcode == AML_SCOPE_OP)) 828 { 829 /* Indicates the end of the current descriptor block (table) */ 830 831 AcpiOsPrintf ("}\n\n"); 832 return (AE_OK); 833 } 834 835 switch (AcpiDmBlockType (Op)) 836 { 837 case BLOCK_PAREN: 838 839 /* Completed an op that has arguments, add closing paren if needed */ 840 841 AcpiDmCloseOperator (Op); 842 843 if (Op->Common.AmlOpcode == AML_NAME_OP) 844 { 845 /* Emit description comment for Name() with a predefined ACPI name */ 846 847 AcpiDmPredefinedDescription (Op); 848 } 849 else 850 { 851 /* For Create* operators, attempt to emit resource tag description */ 852 853 AcpiDmFieldPredefinedDescription (Op); 854 } 855 856 /* Decode Notify() values */ 857 858 if (Op->Common.AmlOpcode == AML_NOTIFY_OP) 859 { 860 AcpiDmNotifyDescription (Op); 861 } 862 863 AcpiDmDisplayTargetPathname (Op); 864 865 /* Could be a nested operator, check if comma required */ 866 867 if (!AcpiDmCommaIfListMember (Op)) 868 { 869 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 870 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) && 871 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 872 { 873 /* 874 * This is a first-level element of a term list 875 * start a new line 876 */ 877 if (!(Info->Flags & ACPI_PARSEOP_PARAMLIST)) 878 { 879 AcpiOsPrintf ("\n"); 880 } 881 } 882 } 883 break; 884 885 case BLOCK_BRACE: 886 case (BLOCK_BRACE | BLOCK_PAREN): 887 888 /* Completed an op that has a term list, add closing brace */ 889 890 if (Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST) 891 { 892 AcpiOsPrintf ("}"); 893 } 894 else 895 { 896 AcpiDmIndent (Level); 897 AcpiOsPrintf ("}"); 898 } 899 900 AcpiDmCommaIfListMember (Op); 901 902 if (AcpiDmBlockType (Op->Common.Parent) != BLOCK_PAREN) 903 { 904 AcpiOsPrintf ("\n"); 905 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_EMPTY_TERMLIST)) 906 { 907 if ((Op->Common.AmlOpcode == AML_IF_OP) && 908 (Op->Common.Next) && 909 (Op->Common.Next->Common.AmlOpcode == AML_ELSE_OP)) 910 { 911 break; 912 } 913 914 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 915 (!Op->Common.Next)) 916 { 917 break; 918 } 919 AcpiOsPrintf ("\n"); 920 } 921 } 922 break; 923 924 case BLOCK_NONE: 925 default: 926 927 /* Could be a nested operator, check if comma required */ 928 929 if (!AcpiDmCommaIfListMember (Op)) 930 { 931 if ((AcpiDmBlockType (Op->Common.Parent) & BLOCK_BRACE) && 932 (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) && 933 (Op->Common.AmlOpcode != AML_INT_BYTELIST_OP)) 934 { 935 /* 936 * This is a first-level element of a term list 937 * start a new line 938 */ 939 AcpiOsPrintf ("\n"); 940 } 941 } 942 else if (Op->Common.Parent) 943 { 944 switch (Op->Common.Parent->Common.AmlOpcode) 945 { 946 case AML_PACKAGE_OP: 947 case AML_VAR_PACKAGE_OP: 948 949 if (!(Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) 950 { 951 AcpiOsPrintf ("\n"); 952 } 953 break; 954 955 default: 956 957 break; 958 } 959 } 960 break; 961 } 962 963 if (Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST) 964 { 965 if ((Op->Common.Next) && 966 (Op->Common.Next->Common.DisasmFlags & ACPI_PARSEOP_PARAMLIST)) 967 { 968 return (AE_OK); 969 } 970 971 /* 972 * The parent Op is guaranteed to be valid because of the flag 973 * ACPI_PARSEOP_PARAMLIST -- which means that this op is part of 974 * a parameter list and thus has a valid parent. 975 */ 976 ParentOp = Op->Common.Parent; 977 978 /* 979 * Just completed a parameter node for something like "Buffer (param)". 980 * Close the paren and open up the term list block with a brace 981 */ 982 if (Op->Common.Next) 983 { 984 AcpiOsPrintf (")"); 985 986 /* 987 * Emit a description comment for a Name() operator that is a 988 * predefined ACPI name. Must check the grandparent. 989 */ 990 ParentOp = ParentOp->Common.Parent; 991 if (ParentOp && 992 (ParentOp->Asl.AmlOpcode == AML_NAME_OP)) 993 { 994 AcpiDmPredefinedDescription (ParentOp); 995 } 996 997 AcpiOsPrintf ("\n"); 998 AcpiDmIndent (Level - 1); 999 AcpiOsPrintf ("{\n"); 1000 } 1001 else 1002 { 1003 ParentOp->Common.DisasmFlags |= ACPI_PARSEOP_EMPTY_TERMLIST; 1004 AcpiOsPrintf (") {"); 1005 } 1006 } 1007 1008 if ((Op->Common.AmlOpcode == AML_NAME_OP) || 1009 (Op->Common.AmlOpcode == AML_RETURN_OP)) 1010 { 1011 Info->Level++; 1012 } 1013 1014 /* 1015 * For ASL+, check for and emit a C-style symbol. If valid, the 1016 * symbol string has been deferred until after the first operand 1017 */ 1018 if (AcpiGbl_CstyleDisassembly) 1019 { 1020 if (Op->Asl.OperatorSymbol) 1021 { 1022 AcpiOsPrintf ("%s", Op->Asl.OperatorSymbol); 1023 Op->Asl.OperatorSymbol = NULL; 1024 } 1025 } 1026 1027 return (AE_OK); 1028 } 1029 1030 #endif /* ACPI_DISASSEMBLER */ 1031