sys/contrib/dev/acpica/source/tools/acpihelp/ahdecode.c

   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 - 2018, 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
 159 /* Local prototypes */
 160
 161 static BOOLEAN
 162 AhDisplayPredefinedName (
 163     char                    *Name,
 164     UINT32                  Length);
 165
 166 static void
 167 AhDisplayPredefinedInfo (
 168     char                    *Name);
 169
 170 static void
 171 AhDisplayResourceName (
 172     const ACPI_PREDEFINED_INFO  *ThisName);
 173
 174
 175 /*******************************************************************************
 176  *
 177  * FUNCTION:    AhPrintOneField
 178  *
 179  * PARAMETERS:  Indent              - Indent length for new line(s)
 180  *              CurrentPosition     - Position on current line
 181  *              MaxPosition         - Max allowed line length
 182  *              Field               - Data to output
 183  *
 184  * RETURN:      Line position after field is written
 185  *
 186  * DESCRIPTION: Split long lines appropriately for ease of reading.
 187  *
 188  ******************************************************************************/
 189
 190 void
 191 AhPrintOneField (
 192     UINT32                  Indent,
 193     UINT32                  CurrentPosition,
 194     UINT32                  MaxPosition,
 195     const char              *Field)
 196 {
 197     UINT32                  Position;
 198     UINT32                  TokenLength;
 199     const char              *This;
 200     const char              *Next;
 201     const char              *Last;
 202
 203
 204     This = Field;
 205     Position = CurrentPosition;
 206
 207     if (Position == 0)
 208     {
 209         printf ("%*s", (int) Indent, " ");
 210         Position = Indent;
 211     }
 212
 213     Last = This + strlen (This);
 214     while ((Next = strpbrk (This, " ")))
 215     {
 216         TokenLength = Next - This;
 217         Position += TokenLength;
 218
 219         /* Split long lines */
 220
 221         if (Position > MaxPosition)
 222         {
 223             printf ("\n%*s", (int) Indent, " ");
 224             Position = TokenLength;
 225         }
 226
 227         printf ("%.*s ", (int) TokenLength, This);
 228         This = Next + 1;
 229     }
 230
 231     /* Handle last token on the input line */
 232
 233     TokenLength = Last - This;
 234     if (TokenLength > 0)
 235     {
 236         Position += TokenLength;
 237         if (Position > MaxPosition)
 238         {
 239             printf ("\n%*s", (int) Indent, " ");
 240         }
 241
 242         printf ("%s", This);
 243     }
 244 }
 245
 246
 247 /*******************************************************************************
 248  *
 249  * FUNCTION:    AhDisplayDirectives
 250  *
 251  * PARAMETERS:  None
 252  *
 253  * RETURN:      None
 254  *
 255  * DESCRIPTION: Display all iASL preprocessor directives.
 256  *
 257  ******************************************************************************/
 258
 259 void
 260 AhDisplayDirectives (
 261     void)
 262 {
 263     const AH_DIRECTIVE_INFO *Info;
 264
 265
 266     printf ("iASL Preprocessor Directives\n\n");
 267
 268     for (Info = Gbl_PreprocessorDirectives; Info->Name; Info++)
 269     {
 270         printf ("  %-36s : %s\n", Info->Name, Info->Description);
 271     }
 272 }
 273
 274
 275 /*******************************************************************************
 276  *
 277  * FUNCTION:    AhFindPredefinedNames (entry point for predefined name search)
 278  *
 279  * PARAMETERS:  NamePrefix          - Name or prefix to find. Must start with
 280  *                                    an underscore. NULL means "find all"
 281  *
 282  * RETURN:      None
 283  *
 284  * DESCRIPTION: Find and display all ACPI predefined names that match the
 285  *              input name or prefix. Includes the required number of arguments
 286  *              and the expected return type, if any.
 287  *
 288  ******************************************************************************/
 289
 290 void
 291 AhFindPredefinedNames (
 292     char                    *NamePrefix)
 293 {
 294     UINT32                  Length;
 295     BOOLEAN                 Found;
 296     char                    Name[9];
 297
 298
 299     if (!NamePrefix || (NamePrefix[0] == '*'))
 300     {
 301         Found = AhDisplayPredefinedName (NULL, 0);
 302         return;
 303     }
 304
 305     /* Contruct a local name or name prefix */
 306
 307     AcpiUtStrupr (NamePrefix);
 308     if (*NamePrefix == '_')
 309     {
 310         NamePrefix++;
 311     }
 312
 313     Name[0] = '_';
 314     AcpiUtSafeStrncpy (&Name[1], NamePrefix, 7);
 315
 316     Length = strlen (Name);
 317     if (Length > ACPI_NAME_SIZE)
 318     {
 319         printf ("%.8s: Predefined name must be 4 characters maximum\n", Name);
 320         return;
 321     }
 322
 323     Found = AhDisplayPredefinedName (Name, Length);
 324     if (!Found)
 325     {
 326         printf ("%s, no matching predefined names\n", Name);
 327     }
 328 }
 329
 330
 331 /*******************************************************************************
 332  *
 333  * FUNCTION:    AhDisplayPredefinedName
 334  *
 335  * PARAMETERS:  Name                - Name or name prefix
 336  *
 337  * RETURN:      TRUE if any names matched, FALSE otherwise
 338  *
 339  * DESCRIPTION: Display information about ACPI predefined names that match
 340  *              the input name or name prefix.
 341  *
 342  ******************************************************************************/
 343
 344 static BOOLEAN
 345 AhDisplayPredefinedName (
 346     char                    *Name,
 347     UINT32                  Length)
 348 {
 349     const AH_PREDEFINED_NAME    *Info;
 350     BOOLEAN                     Found = FALSE;
 351     BOOLEAN                     Matched;
 352     UINT32                      i = 0;
 353
 354
 355     /* Find/display all names that match the input name prefix */
 356
 357     for (Info = AslPredefinedInfo; Info->Name; Info++)
 358     {
 359         if (!Name)
 360         {
 361             Found = TRUE;
 362             printf ("%s: <%s>\n", Info->Name, Info->Description);
 363             printf ("%*s%s\n", 6, " ", Info->Action);
 364
 365             AhDisplayPredefinedInfo (Info->Name);
 366             i++;
 367             continue;
 368         }
 369
 370         Matched = TRUE;
 371         for (i = 0; i < Length; i++)
 372         {
 373             if (Info->Name[i] != Name[i])
 374             {
 375                 Matched = FALSE;
 376                 break;
 377             }
 378         }
 379
 380         if (Matched)
 381         {
 382             Found = TRUE;
 383             printf ("%s: <%s>\n", Info->Name, Info->Description);
 384             printf ("%*s%s\n", 6, " ", Info->Action);
 385
 386             AhDisplayPredefinedInfo (Info->Name);
 387         }
 388     }
 389
 390     if (!Name)
 391     {
 392         printf ("\nFound %d Predefined ACPI Names\n", i);
 393     }
 394     return (Found);
 395 }
 396
 397
 398 /*******************************************************************************
 399  *
 400  * FUNCTION:    AhDisplayPredefinedInfo
 401  *
 402  * PARAMETERS:  Name                - Exact 4-character ACPI name.
 403  *
 404  * RETURN:      None
 405  *
 406  * DESCRIPTION: Find the name in the main ACPICA predefined info table and
 407  *              display the # of arguments and the return value type.
 408  *
 409  *              Note: Resource Descriptor field names do not appear in this
 410  *              table -- thus, nothing will be displayed for them.
 411  *
 412  ******************************************************************************/
 413
 414 static void
 415 AhDisplayPredefinedInfo (
 416     char                        *Name)
 417 {
 418     const ACPI_PREDEFINED_INFO  *ThisName;
 419
 420
 421     /* NOTE: we check both tables always because there are some dupes */
 422
 423     /* Check against the predefine methods first */
 424
 425     ThisName = AcpiUtMatchPredefinedMethod (Name);
 426     if (ThisName)
 427     {
 428         AcpiUtDisplayPredefinedMethod (Gbl_Buffer, ThisName, TRUE);
 429     }
 430
 431     /* Check against the predefined resource descriptor names */
 432
 433     ThisName = AcpiUtMatchResourceName (Name);
 434     if (ThisName)
 435     {
 436         AhDisplayResourceName (ThisName);
 437     }
 438 }
 439
 440
 441 /*******************************************************************************
 442  *
 443  * FUNCTION:    AhDisplayResourceName
 444  *
 445  * PARAMETERS:  ThisName            - Entry in the predefined method/name table
 446  *
 447  * RETURN:      None
 448  *
 449  * DESCRIPTION: Display information about a resource descriptor name.
 450  *
 451  ******************************************************************************/
 452
 453 static void
 454 AhDisplayResourceName (
 455     const ACPI_PREDEFINED_INFO  *ThisName)
 456 {
 457     UINT32                      NumTypes;
 458
 459
 460     NumTypes = AcpiUtGetResourceBitWidth (Gbl_Buffer,
 461         ThisName->Info.ArgumentList);
 462
 463     printf ("      %4.4s resource descriptor field is %s bits wide%s\n",
 464         ThisName->Info.Name,
 465         Gbl_Buffer,
 466         (NumTypes > 1) ? " (depending on descriptor type)" : "");
 467 }
 468
 469
 470 /*******************************************************************************
 471  *
 472  * FUNCTION:    AhDisplayDeviceIds
 473  *
 474  * PARAMETERS:  Name                - Device Hardware ID string.
 475  *                                    NULL means "find all"
 476  *
 477  * RETURN:      None
 478  *
 479  * DESCRIPTION: Display PNP* and ACPI* device IDs.
 480  *
 481  ******************************************************************************/
 482
 483 void
 484 AhDisplayDeviceIds (
 485     char                    *Name)
 486 {
 487     const AH_DEVICE_ID      *Info;
 488     UINT32                  Length;
 489     BOOLEAN                 Matched;
 490     UINT32                  i;
 491     BOOLEAN                 Found = FALSE;
 492
 493
 494     /* Null input name indicates "display all" */
 495
 496     if (!Name || (Name[0] == '*'))
 497     {
 498         printf ("ACPI and PNP Device/Hardware IDs:\n\n");
 499         for (Info = AslDeviceIds; Info->Name; Info++)
 500         {
 501             printf ("%8s   %s\n", Info->Name, Info->Description);
 502         }
 503
 504         return;
 505     }
 506
 507     Length = strlen (Name);
 508     if (Length > 8)
 509     {
 510         printf ("%.8s: Hardware ID must be 8 characters maximum\n", Name);
 511         return;
 512     }
 513
 514     /* Find/display all names that match the input name prefix */
 515
 516     AcpiUtStrupr (Name);
 517     for (Info = AslDeviceIds; Info->Name; Info++)
 518     {
 519         Matched = TRUE;
 520         for (i = 0; i < Length; i++)
 521         {
 522             if (Info->Name[i] != Name[i])
 523             {
 524                 Matched = FALSE;
 525                 break;
 526             }
 527         }
 528
 529         if (Matched)
 530         {
 531             Found = TRUE;
 532             printf ("%8s   %s\n", Info->Name, Info->Description);
 533         }
 534     }
 535
 536     if (!Found)
 537     {
 538         printf ("%s, Hardware ID not found\n", Name);
 539     }
 540 }
 541
 542
 543 /*******************************************************************************
 544  *
 545  * FUNCTION:    AhDisplayUuids
 546  *
 547  * PARAMETERS:  None
 548  *
 549  * RETURN:      None
 550  *
 551  * DESCRIPTION: Display all known UUIDs.
 552  *
 553  ******************************************************************************/
 554
 555 void
 556 AhDisplayUuids (
 557     void)
 558 {
 559     const AH_UUID           *Info;
 560
 561
 562     printf ("ACPI-related UUIDs/GUIDs:\n");
 563
 564     /* Display entire table of known ACPI-related UUIDs/GUIDs */
 565
 566     for (Info = Gbl_AcpiUuids; Info->Description; Info++)
 567     {
 568         if (!Info->String) /* Null UUID string means group description */
 569         {
 570             printf ("\n%36s\n", Info->Description);
 571         }
 572         else
 573         {
 574             printf ("%32s : %s\n", Info->Description, Info->String);
 575         }
 576     }
 577
 578     /* Help info on how UUIDs/GUIDs strings are encoded */
 579
 580     printf ("\n\nByte encoding of UUID/GUID strings"
 581         " into ACPI Buffer objects (use ToUUID from ASL):\n\n");
 582
 583     printf ("%32s : %s\n", "Input UUID/GUID String format",
 584         "aabbccdd-eeff-gghh-iijj-kkllmmnnoopp");
 585
 586     printf ("%32s : %s\n", "Expected output ACPI buffer",
 587         "dd,cc,bb,aa, ff,ee, hh,gg, ii,jj, kk,ll,mm,nn,oo,pp");
 588 }
 589
 590
 591 /*******************************************************************************
 592  *
 593  * FUNCTION:    AhDisplayTables
 594  *
 595  * PARAMETERS:  None
 596  *
 597  * RETURN:      None
 598  *
 599  * DESCRIPTION: Display all known ACPI tables
 600  *
 601  ******************************************************************************/
 602
 603 void
 604 AhDisplayTables (
 605     void)
 606 {
 607     const AH_TABLE          *Info;
 608     UINT32                  i = 0;
 609
 610
 611     printf ("Known ACPI tables:\n");
 612
 613     for (Info = Gbl_AcpiSupportedTables; Info->Signature; Info++)
 614     {
 615         printf ("%8s : %s\n", Info->Signature, Info->Description);
 616         i++;
 617     }
 618
 619     printf ("\nTotal %u ACPI tables\n\n", i);
 620 }
 621
 622
 623 /*******************************************************************************
 624  *
 625  * FUNCTION:    AhDecodeException
 626  *
 627  * PARAMETERS:  HexString           - ACPI status string from command line, in
 628  *                                    hex. If null, display all exceptions.
 629  *
 630  * RETURN:      None
 631  *
 632  * DESCRIPTION: Decode and display an ACPI_STATUS exception code.
 633  *
 634  ******************************************************************************/
 635
 636 void
 637 AhDecodeException (
 638     char                    *HexString)
 639 {
 640     const ACPI_EXCEPTION_INFO   *ExceptionInfo;
 641     UINT32                      Status;
 642     UINT32                      i;
 643
 644
 645     /*
 646      * A null input string means to decode and display all known
 647      * exception codes.
 648      */
 649     if (!HexString)
 650     {
 651         printf ("All defined ACPICA exception codes:\n\n");
 652         AH_DISPLAY_EXCEPTION (0,
 653             "AE_OK                        (No error occurred)");
 654
 655         /* Display codes in each block of exception types */
 656
 657         for (i = 1; (i & AE_CODE_MASK) <= AE_CODE_MAX; i += 0x1000)
 658         {
 659             Status = i;
 660             do
 661             {
 662                 ExceptionInfo = AcpiUtValidateException ((ACPI_STATUS) Status);
 663                 if (ExceptionInfo)
 664                 {
 665                     AH_DISPLAY_EXCEPTION_TEXT (Status, ExceptionInfo);
 666                 }
 667
 668                 Status++;
 669
 670             } while (ExceptionInfo);
 671         }
 672         return;
 673     }
 674
 675     /* Decode a single user-supplied exception code */
 676
 677     Status = strtoul (HexString, NULL, 16);
 678     if (!Status)
 679     {
 680         printf ("%s: Invalid hexadecimal exception code value\n", HexString);
 681         return;
 682     }
 683
 684     if (Status > ACPI_UINT16_MAX)
 685     {
 686         AH_DISPLAY_EXCEPTION (Status, "Invalid exception code (more than 16 bits)");
 687         return;
 688     }
 689
 690     ExceptionInfo = AcpiUtValidateException ((ACPI_STATUS) Status);
 691     if (!ExceptionInfo)
 692     {
 693         AH_DISPLAY_EXCEPTION (Status, "Unknown exception code");
 694         return;
 695     }
 696
 697     AH_DISPLAY_EXCEPTION_TEXT (Status, ExceptionInfo);
 698 }