1 /****************************************************************************** 2 * 3 * Module Name: ahdecode - Miscellaneous decoding for acpihelp utility 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2020, Intel Corp. 12 * All rights reserved. 13 * 14 * 2. License 15 * 16 * 2.1. This is your license from Intel Corp. under its intellectual property 17 * rights. You may have additional license terms from the party that provided 18 * you this software, covering your right to use that party's intellectual 19 * property rights. 20 * 21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 22 * copy of the source code appearing in this file ("Covered Code") an 23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 24 * base code distributed originally by Intel ("Original Intel Code") to copy, 25 * make derivatives, distribute, use and display any portion of the Covered 26 * Code in any form, with the right to sublicense such rights; and 27 * 28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 29 * license (with the right to sublicense), under only those claims of Intel 30 * patents that are infringed by the Original Intel Code, to make, use, sell, 31 * offer to sell, and import the Covered Code and derivative works thereof 32 * solely to the minimum extent necessary to exercise the above copyright 33 * license, and in no event shall the patent license extend to any additions 34 * to or modifications of the Original Intel Code. No other license or right 35 * is granted directly or by implication, estoppel or otherwise; 36 * 37 * The above copyright and patent license is granted only if the following 38 * conditions are met: 39 * 40 * 3. Conditions 41 * 42 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 43 * Redistribution of source code of any substantial portion of the Covered 44 * Code or modification with rights to further distribute source must include 45 * the above Copyright Notice, the above License, this list of Conditions, 46 * and the following Disclaimer and Export Compliance provision. In addition, 47 * Licensee must cause all Covered Code to which Licensee contributes to 48 * contain a file documenting the changes Licensee made to create that Covered 49 * Code and the date of any change. Licensee must include in that file the 50 * documentation of any changes made by any predecessor Licensee. Licensee 51 * must include a prominent statement that the modification is derived, 52 * directly or indirectly, from Original Intel Code. 53 * 54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 55 * Redistribution of source code of any substantial portion of the Covered 56 * Code or modification without rights to further distribute source must 57 * include the following Disclaimer and Export Compliance provision in the 58 * documentation and/or other materials provided with distribution. In 59 * addition, Licensee may not authorize further sublicense of source of any 60 * portion of the Covered Code, and must include terms to the effect that the 61 * license from Licensee to its licensee is limited to the intellectual 62 * property embodied in the software Licensee provides to its licensee, and 63 * not to intellectual property embodied in modifications its licensee may 64 * make. 65 * 66 * 3.3. Redistribution of Executable. Redistribution in executable form of any 67 * substantial portion of the Covered Code or modification must reproduce the 68 * above Copyright Notice, and the following Disclaimer and Export Compliance 69 * provision in the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3.4. Intel retains all right, title, and interest in and to the Original 73 * Intel Code. 74 * 75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 76 * Intel shall be used in advertising or otherwise to promote the sale, use or 77 * other dealings in products derived from or relating to the Covered Code 78 * without prior written authorization from Intel. 79 * 80 * 4. Disclaimer and Export Compliance 81 * 82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 88 * PARTICULAR PURPOSE. 89 * 90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 97 * LIMITED REMEDY. 98 * 99 * 4.3. Licensee shall not export, either directly or indirectly, any of this 100 * software or system incorporating such software without first obtaining any 101 * required license or other approval from the U. S. Department of Commerce or 102 * any other agency or department of the United States Government. In the 103 * event Licensee exports any such software from the United States or 104 * re-exports any such software from a foreign destination, Licensee shall 105 * ensure that the distribution and export/re-export of the software is in 106 * compliance with all laws, regulations, orders, or other restrictions of the 107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 108 * any of its subsidiaries will export/re-export any technical data, process, 109 * software, or service, directly or indirectly, to any country for which the 110 * United States government or any agency thereof requires an export license, 111 * other governmental approval, or letter of assurance, without first obtaining 112 * such license, approval or letter. 113 * 114 ***************************************************************************** 115 * 116 * Alternatively, you may choose to be licensed under the terms of the 117 * following license: 118 * 119 * Redistribution and use in source and binary forms, with or without 120 * modification, are permitted provided that the following conditions 121 * are met: 122 * 1. Redistributions of source code must retain the above copyright 123 * notice, this list of conditions, and the following disclaimer, 124 * without modification. 125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 126 * substantially similar to the "NO WARRANTY" disclaimer below 127 * ("Disclaimer") and any redistribution must be conditioned upon 128 * including a substantially similar Disclaimer requirement for further 129 * binary redistribution. 130 * 3. Neither the names of the above-listed copyright holders nor the names 131 * of any contributors may be used to endorse or promote products derived 132 * from this software without specific prior written permission. 133 * 134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 145 * 146 * Alternatively, you may choose to be licensed under the terms of the 147 * GNU General Public License ("GPL") version 2 as published by the Free 148 * Software Foundation. 149 * 150 *****************************************************************************/ 151 152 #define ACPI_CREATE_PREDEFINED_TABLE 153 #define ACPI_CREATE_RESOURCE_TABLE 154 155 #include "acpihelp.h" 156 #include "acpredef.h" 157 158 BOOLEAN AslGbl_VerboseErrors = TRUE; 159 160 /* Local prototypes */ 161 162 static BOOLEAN 163 AhDisplayPredefinedName ( 164 char *Name, 165 UINT32 Length); 166 167 static void 168 AhDisplayPredefinedInfo ( 169 char *Name); 170 171 static void 172 AhDoSpecialNames ( 173 char *Name); 174 175 static void 176 AhDisplayResourceName ( 177 const ACPI_PREDEFINED_INFO *ThisName); 178 179 180 /******************************************************************************* 181 * 182 * FUNCTION: AhPrintOneField 183 * 184 * PARAMETERS: Indent - Indent length for new line(s) 185 * CurrentPosition - Position on current line 186 * MaxPosition - Max allowed line length 187 * Field - Data to output 188 * 189 * RETURN: Line position after field is written 190 * 191 * DESCRIPTION: Split long lines appropriately for ease of reading. 192 * 193 ******************************************************************************/ 194 195 void 196 AhPrintOneField ( 197 UINT32 Indent, 198 UINT32 CurrentPosition, 199 UINT32 MaxPosition, 200 const char *Field) 201 { 202 UINT32 Position; 203 UINT32 TokenLength; 204 const char *This; 205 const char *Next; 206 const char *Last; 207 208 209 This = Field; 210 Position = CurrentPosition; 211 212 if (Position == 0) 213 { 214 printf ("%*s", (int) Indent, " "); 215 Position = Indent; 216 } 217 218 Last = This + strlen (This); 219 while ((Next = strpbrk (This, " "))) 220 { 221 TokenLength = Next - This; 222 Position += TokenLength; 223 224 /* Split long lines */ 225 226 if (Position > MaxPosition) 227 { 228 printf ("\n%*s", (int) Indent, " "); 229 Position = TokenLength; 230 } 231 232 printf ("%.*s ", (int) TokenLength, This); 233 This = Next + 1; 234 } 235 236 /* Handle last token on the input line */ 237 238 TokenLength = Last - This; 239 if (TokenLength > 0) 240 { 241 Position += TokenLength; 242 if (Position > MaxPosition) 243 { 244 printf ("\n%*s", (int) Indent, " "); 245 } 246 247 printf ("%s", This); 248 } 249 } 250 251 252 /******************************************************************************* 253 * 254 * FUNCTION: AhDisplayDirectives 255 * 256 * PARAMETERS: None 257 * 258 * RETURN: None 259 * 260 * DESCRIPTION: Display all iASL preprocessor directives. 261 * 262 ******************************************************************************/ 263 264 void 265 AhDisplayDirectives ( 266 void) 267 { 268 const AH_DIRECTIVE_INFO *Info; 269 270 271 printf ("iASL Preprocessor Directives\n\n"); 272 273 for (Info = Gbl_PreprocessorDirectives; Info->Name; Info++) 274 { 275 printf (" %-36s : %s\n", Info->Name, Info->Description); 276 } 277 } 278 279 280 /******************************************************************************* 281 * 282 * FUNCTION: AhFindPredefinedNames (entry point for predefined name search) 283 * 284 * PARAMETERS: NamePrefix - Name or prefix to find. Must start with 285 * an underscore. NULL means "find all" 286 * 287 * RETURN: None 288 * 289 * DESCRIPTION: Find and display all ACPI predefined names that match the 290 * input name or prefix. Includes the required number of arguments 291 * and the expected return type, if any. 292 * 293 ******************************************************************************/ 294 295 void 296 AhFindPredefinedNames ( 297 char *NamePrefix) 298 { 299 UINT32 Length; 300 BOOLEAN Found; 301 char Name[ACPI_NAMESEG_SIZE + 1]; 302 303 304 if (!NamePrefix || (*NamePrefix == '*')) 305 { 306 (void) AhDisplayPredefinedName (NULL, 0); 307 return; 308 } 309 310 Length = strlen (NamePrefix); 311 if (Length > ACPI_NAMESEG_SIZE) 312 { 313 printf ("%.8s: Predefined name must be 4 characters maximum\n", 314 NamePrefix); 315 return; 316 } 317 318 /* Construct a local name or name prefix */ 319 320 AcpiUtStrupr (NamePrefix); 321 if (*NamePrefix == '_') 322 { 323 NamePrefix++; 324 } 325 326 Name[0] = '_'; 327 AcpiUtSafeStrncpy (&Name[1], NamePrefix, 4); 328 329 /* Check for special names such as _Exx, _ACx, etc. */ 330 331 AhDoSpecialNames (Name); 332 333 /* Lookup and display the name(s) */ 334 335 Found = AhDisplayPredefinedName (Name, Length); 336 if (!Found) 337 { 338 printf ("%s, no matching predefined names\n", Name); 339 } 340 } 341 342 343 /******************************************************************************* 344 * 345 * FUNCTION: AhDoSpecialNames 346 * 347 * PARAMETERS: Name - Name or prefix to find 348 * 349 * RETURN: None 350 * 351 * DESCRIPTION: Detect and handle the "special" names such as _Exx, _ACx, etc. 352 * 353 * Current support: 354 * _EJx 355 * _Exx 356 * _Lxx 357 * _Qxx 358 * _Wxx 359 * _ACx 360 * _ALx 361 * _T_x 362 * 363 ******************************************************************************/ 364 365 static void 366 AhDoSpecialNames ( 367 char *Name) 368 { 369 370 /* 371 * Check for the special names that have one or more numeric 372 * suffixes. For example, _Lxx can have 256 different flavors, 373 * from _L00 to _LFF. 374 */ 375 switch (Name[1]) 376 { 377 case 'E': 378 if (Name[2] == 'J') 379 { 380 if (isdigit ((int) Name[3]) || (Name[3] == 'X')) 381 { 382 /* _EJx */ 383 384 Name[3] = 'x'; 385 break; 386 } 387 } 388 389 ACPI_FALLTHROUGH; 390 391 case 'L': 392 case 'Q': 393 case 'W': 394 if ((isxdigit ((int) Name[2]) && isxdigit ((int) Name[3])) 395 || 396 ((Name[2] == 'X') && (Name[3] == 'X'))) 397 { 398 /* _Exx, _Lxx, _Qxx, or _Wxx */ 399 400 Name[2] = 'x'; 401 Name[3] = 'x'; 402 } 403 break; 404 405 case 'A': 406 if ((Name[2] == 'C') || (Name[2] == 'L')) 407 { 408 if (isdigit ((int) Name[3]) || (Name[3] == 'X')) 409 { 410 /* _ACx or _ALx */ 411 412 Name[3] = 'x'; 413 } 414 } 415 break; 416 417 case 'T': 418 if (Name[2] == '_') 419 { 420 /* _T_x (Reserved for iASL compiler */ 421 422 Name[3] = 'x'; 423 } 424 break; 425 426 default: 427 break; 428 } 429 } 430 431 432 /******************************************************************************* 433 * 434 * FUNCTION: AhDisplayPredefinedName 435 * 436 * PARAMETERS: Name - Name or name prefix 437 * 438 * RETURN: TRUE if any names matched, FALSE otherwise 439 * 440 * DESCRIPTION: Display information about ACPI predefined names that match 441 * the input name or name prefix. 442 * 443 ******************************************************************************/ 444 445 static BOOLEAN 446 AhDisplayPredefinedName ( 447 char *Name, 448 UINT32 Length) 449 { 450 const AH_PREDEFINED_NAME *Info; 451 BOOLEAN Found = FALSE; 452 BOOLEAN Matched; 453 UINT32 i = 0; 454 455 456 /* Find/display all names that match the input name prefix */ 457 458 for (Info = AslPredefinedInfo; Info->Name; Info++) 459 { 460 if (!Name) 461 { 462 Found = TRUE; 463 printf ("%s: <%s>\n", Info->Name, Info->Description); 464 printf ("%*s%s\n", 6, " ", Info->Action); 465 466 AhDisplayPredefinedInfo (Info->Name); 467 i++; 468 continue; 469 } 470 471 Matched = TRUE; 472 for (i = 0; i < Length; i++) 473 { 474 if (Info->Name[i] != Name[i]) 475 { 476 Matched = FALSE; 477 break; 478 } 479 } 480 481 if (Matched) 482 { 483 Found = TRUE; 484 printf ("%s: <%s>\n", Info->Name, Info->Description); 485 printf ("%*s%s\n", 6, " ", Info->Action); 486 487 AhDisplayPredefinedInfo (Info->Name); 488 } 489 } 490 491 if (!Name) 492 { 493 printf ("\nFound %d Predefined ACPI Names\n", i); 494 } 495 return (Found); 496 } 497 498 499 /******************************************************************************* 500 * 501 * FUNCTION: AhDisplayPredefinedInfo 502 * 503 * PARAMETERS: Name - Exact 4-character ACPI name. 504 * 505 * RETURN: None 506 * 507 * DESCRIPTION: Find the name in the main ACPICA predefined info table and 508 * display the # of arguments and the return value type. 509 * 510 * Note: Resource Descriptor field names do not appear in this 511 * table -- thus, nothing will be displayed for them. 512 * 513 ******************************************************************************/ 514 515 static void 516 AhDisplayPredefinedInfo ( 517 char *Name) 518 { 519 const ACPI_PREDEFINED_INFO *ThisName; 520 521 522 /* NOTE: we check both tables always because there are some dupes */ 523 524 /* Check against the predefined methods first */ 525 526 ThisName = AcpiUtMatchPredefinedMethod (Name); 527 if (ThisName) 528 { 529 AcpiUtDisplayPredefinedMethod (Gbl_Buffer, ThisName, TRUE); 530 } 531 532 /* Check against the predefined resource descriptor names */ 533 534 ThisName = AcpiUtMatchResourceName (Name); 535 if (ThisName) 536 { 537 AhDisplayResourceName (ThisName); 538 } 539 } 540 541 542 /******************************************************************************* 543 * 544 * FUNCTION: AhDisplayResourceName 545 * 546 * PARAMETERS: ThisName - Entry in the predefined method/name table 547 * 548 * RETURN: None 549 * 550 * DESCRIPTION: Display information about a resource descriptor name. 551 * 552 ******************************************************************************/ 553 554 static void 555 AhDisplayResourceName ( 556 const ACPI_PREDEFINED_INFO *ThisName) 557 { 558 UINT32 NumTypes; 559 560 561 NumTypes = AcpiUtGetResourceBitWidth (Gbl_Buffer, 562 ThisName->Info.ArgumentList); 563 564 printf (" %4.4s resource descriptor field is %s bits wide%s\n", 565 ThisName->Info.Name, 566 Gbl_Buffer, 567 (NumTypes > 1) ? " (depending on descriptor type)" : ""); 568 } 569 570 571 /******************************************************************************* 572 * 573 * FUNCTION: AhDisplayDeviceIds 574 * 575 * PARAMETERS: Name - Device Hardware ID string. 576 * NULL means "find all" 577 * 578 * RETURN: None 579 * 580 * DESCRIPTION: Display PNP* and ACPI* device IDs. 581 * 582 ******************************************************************************/ 583 584 void 585 AhDisplayDeviceIds ( 586 char *Name) 587 { 588 const AH_DEVICE_ID *Info; 589 UINT32 Length; 590 BOOLEAN Matched; 591 UINT32 i; 592 BOOLEAN Found = FALSE; 593 594 595 /* Null input name indicates "display all" */ 596 597 if (!Name || (Name[0] == '*')) 598 { 599 printf ("ACPI and PNP Device/Hardware IDs:\n\n"); 600 for (Info = AslDeviceIds; Info->Name; Info++) 601 { 602 printf ("%8s %s\n", Info->Name, Info->Description); 603 } 604 605 return; 606 } 607 608 Length = strlen (Name); 609 if (Length > 8) 610 { 611 printf ("%.8s: Hardware ID must be 8 characters maximum\n", Name); 612 return; 613 } 614 615 /* Find/display all names that match the input name prefix */ 616 617 AcpiUtStrupr (Name); 618 for (Info = AslDeviceIds; Info->Name; Info++) 619 { 620 Matched = TRUE; 621 for (i = 0; i < Length; i++) 622 { 623 if (Info->Name[i] != Name[i]) 624 { 625 Matched = FALSE; 626 break; 627 } 628 } 629 630 if (Matched) 631 { 632 Found = TRUE; 633 printf ("%8s %s\n", Info->Name, Info->Description); 634 } 635 } 636 637 if (!Found) 638 { 639 printf ("%s, Hardware ID not found\n", Name); 640 } 641 } 642 643 644 /******************************************************************************* 645 * 646 * FUNCTION: AhDisplayUuids 647 * 648 * PARAMETERS: None 649 * 650 * RETURN: None 651 * 652 * DESCRIPTION: Display all known UUIDs. 653 * 654 ******************************************************************************/ 655 656 void 657 AhDisplayUuids ( 658 void) 659 { 660 const AH_UUID *Info; 661 662 663 printf ("ACPI-related UUIDs/GUIDs:\n"); 664 665 /* Display entire table of known ACPI-related UUIDs/GUIDs */ 666 667 for (Info = Gbl_AcpiUuids; Info->Description; Info++) 668 { 669 if (!Info->String) /* Null UUID string means group description */ 670 { 671 printf ("\n%36s\n", Info->Description); 672 } 673 else 674 { 675 printf ("%32s : %s\n", Info->Description, Info->String); 676 } 677 } 678 679 /* Help info on how UUIDs/GUIDs strings are encoded */ 680 681 printf ("\n\nByte encoding of UUID/GUID strings" 682 " into ACPI Buffer objects (use ToUUID from ASL):\n\n"); 683 684 printf ("%32s : %s\n", "Input UUID/GUID String format", 685 "aabbccdd-eeff-gghh-iijj-kkllmmnnoopp"); 686 687 printf ("%32s : %s\n", "Expected output ACPI buffer", 688 "dd,cc,bb,aa, ff,ee, hh,gg, ii,jj, kk,ll,mm,nn,oo,pp"); 689 } 690 691 692 /******************************************************************************* 693 * 694 * FUNCTION: AhDisplayTables 695 * 696 * PARAMETERS: None 697 * 698 * RETURN: None 699 * 700 * DESCRIPTION: Display all known ACPI tables 701 * 702 ******************************************************************************/ 703 704 void 705 AhDisplayTables ( 706 void) 707 { 708 const AH_TABLE *Info; 709 UINT32 i = 0; 710 711 712 printf ("Known ACPI tables:\n"); 713 714 for (Info = AcpiGbl_SupportedTables; Info->Signature; Info++) 715 { 716 printf ("%8s : %s\n", Info->Signature, Info->Description); 717 i++; 718 } 719 720 printf ("\nTotal %u ACPI tables\n\n", i); 721 } 722 723 724 /******************************************************************************* 725 * 726 * FUNCTION: AhDecodeException 727 * 728 * PARAMETERS: HexString - ACPI status string from command line, in 729 * hex. If null, display all exceptions. 730 * 731 * RETURN: None 732 * 733 * DESCRIPTION: Decode and display an ACPI_STATUS exception code. 734 * 735 ******************************************************************************/ 736 737 void 738 AhDecodeException ( 739 char *HexString) 740 { 741 const ACPI_EXCEPTION_INFO *ExceptionInfo; 742 UINT32 Status; 743 UINT32 i; 744 745 746 /* 747 * A null input string means to decode and display all known 748 * exception codes. 749 */ 750 if (!HexString) 751 { 752 printf ("All defined ACPICA exception codes:\n\n"); 753 AH_DISPLAY_EXCEPTION (0, 754 "AE_OK (No error occurred)"); 755 756 /* Display codes in each block of exception types */ 757 758 for (i = 1; (i & AE_CODE_MASK) <= AE_CODE_MAX; i += 0x1000) 759 { 760 Status = i; 761 do 762 { 763 ExceptionInfo = AcpiUtValidateException ((ACPI_STATUS) Status); 764 if (ExceptionInfo) 765 { 766 AH_DISPLAY_EXCEPTION_TEXT (Status, ExceptionInfo); 767 } 768 769 Status++; 770 771 } while (ExceptionInfo); 772 } 773 return; 774 } 775 776 /* Decode a single user-supplied exception code */ 777 778 Status = strtoul (HexString, NULL, 16); 779 if (!Status) 780 { 781 printf ("%s: Invalid hexadecimal exception code value\n", HexString); 782 return; 783 } 784 785 if (Status > ACPI_UINT16_MAX) 786 { 787 AH_DISPLAY_EXCEPTION (Status, "Invalid exception code (more than 16 bits)"); 788 return; 789 } 790 791 ExceptionInfo = AcpiUtValidateException ((ACPI_STATUS) Status); 792 if (!ExceptionInfo) 793 { 794 AH_DISPLAY_EXCEPTION (Status, "Unknown exception code"); 795 return; 796 } 797 798 AH_DISPLAY_EXCEPTION_TEXT (Status, ExceptionInfo); 799 } 800