xref: /illumos-gate/usr/src/cmd/acpi/iasl/dttemplate.c (revision 2aeafac3612e19716bf8164f89c3c9196342979c)
1 /******************************************************************************
2  *
3  * Module Name: dttemplate - ACPI table template generation
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 #include "aslcompiler.h"
153 #include "acapps.h"
154 #include "dttemplate.h" /* Contains the hex ACPI table templates */
155 
156 #define _COMPONENT          DT_COMPILER
157         ACPI_MODULE_NAME    ("dttemplate")
158 
159 
160 /* Local prototypes */
161 
162 static BOOLEAN
163 AcpiUtIsSpecialTable (
164     char                    *Signature);
165 
166 static ACPI_STATUS
167 DtCreateOneTemplateFile (
168     char                    *Signature,
169     UINT32                  TableCount);
170 
171 static ACPI_STATUS
172 DtCreateOneTemplate (
173     char                    *Signature,
174     UINT32                  TableCount,
175     const ACPI_DMTABLE_DATA *TableData);
176 
177 static ACPI_STATUS
178 DtCreateAllTemplates (
179     void);
180 
181 static int
182 DtEmitDefinitionBlock (
183     FILE                    *File,
184     char                    *Filename,
185     char                    *Signature,
186     UINT32                  Instance);
187 
188 
189 /*******************************************************************************
190  *
191  * FUNCTION:    AcpiUtIsSpecialTable
192  *
193  * PARAMETERS:  Signature           - ACPI table signature
194  *
195  * RETURN:      TRUE if signature is a special ACPI table
196  *
197  * DESCRIPTION: Check for valid ACPI tables that are not in the main ACPI
198  *              table data structure (AcpiDmTableData).
199  *
200  ******************************************************************************/
201 
202 static BOOLEAN
203 AcpiUtIsSpecialTable (
204     char                    *Signature)
205 {
206 
207     if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_DSDT) ||
208         ACPI_COMPARE_NAME (Signature, ACPI_SIG_OSDT) ||
209         ACPI_COMPARE_NAME (Signature, ACPI_SIG_SSDT) ||
210         ACPI_COMPARE_NAME (Signature, ACPI_SIG_FACS) ||
211         ACPI_COMPARE_NAME (Signature, ACPI_RSDP_NAME))
212     {
213         return (TRUE);
214     }
215 
216     return (FALSE);
217 }
218 
219 
220 /*******************************************************************************
221  *
222  * FUNCTION:    DtCreateTemplates
223  *
224  * PARAMETERS:  argv                - Standard command line arguments
225  *
226  * RETURN:      Status
227  *
228  * DESCRIPTION: Create one or more template files.
229  *
230  ******************************************************************************/
231 
232 ACPI_STATUS
233 DtCreateTemplates (
234     char                    **argv)
235 {
236     char                    *Signature;
237     char                    *End;
238     unsigned long           TableCount;
239     ACPI_STATUS             Status = AE_OK;
240 
241 
242     AslInitializeGlobals ();
243 
244     Status = AdInitialize ();
245     if (ACPI_FAILURE (Status))
246     {
247         return (Status);
248     }
249 
250     /*
251      * Special cases for DSDT, ALL, and '*'
252      */
253 
254     /* Default (no signature option) is DSDT */
255 
256     if (AcpiGbl_Optind < 3)
257     {
258         Status = DtCreateOneTemplateFile (ACPI_SIG_DSDT, 0);
259         goto Exit;
260     }
261 
262     AcpiGbl_Optind--;
263     Signature = argv[AcpiGbl_Optind];
264     AcpiUtStrupr (Signature);
265 
266     /*
267      * Multiple SSDT support (-T <ssdt count>)
268      */
269     TableCount = strtoul (Signature, &End, 0);
270     if (Signature != End)
271     {
272         /* The count is used for table ID and method name - max is 254(+1) */
273 
274         if (TableCount > 254)
275         {
276             fprintf (stderr, "%u SSDTs requested, maximum is 254\n",
277                 (unsigned int) TableCount);
278 
279             Status = AE_LIMIT;
280             goto Exit;
281         }
282 
283         Status = DtCreateOneTemplateFile (ACPI_SIG_DSDT, TableCount);
284         goto Exit;
285     }
286 
287     if (!strcmp (Signature, "ALL"))
288     {
289         /* Create all available/known templates */
290 
291         Status = DtCreateAllTemplates ();
292         goto Exit;
293     }
294 
295     /*
296      * Normal case: Create template for each signature
297      */
298     while (argv[AcpiGbl_Optind])
299     {
300         Signature = argv[AcpiGbl_Optind];
301         AcpiUtStrupr (Signature);
302 
303         Status = DtCreateOneTemplateFile (Signature, 0);
304         if (ACPI_FAILURE (Status))
305         {
306             goto Exit;
307         }
308 
309         AcpiGbl_Optind++;
310     }
311 
312 
313 Exit:
314     /* Shutdown ACPICA subsystem */
315 
316     (void) AcpiTerminate ();
317     UtDeleteLocalCaches ();
318     return (Status);
319 }
320 
321 
322 /*******************************************************************************
323  *
324  * FUNCTION:    DtCreateOneTemplateFile
325  *
326  * PARAMETERS:  Signature           - ACPI table signature
327  *
328  * RETURN:      Status
329  *
330  * DESCRIPTION: Create one template file of the requested signature.
331  *
332  ******************************************************************************/
333 
334 static ACPI_STATUS
335 DtCreateOneTemplateFile (
336     char                    *Signature,
337     UINT32                  TableCount)
338 {
339     const ACPI_DMTABLE_DATA *TableData;
340     ACPI_STATUS             Status;
341 
342 
343     /*
344      * Validate signature and get the template data:
345      *  1) Signature must be 4 characters
346      *  2) Signature must be a recognized ACPI table
347      *  3) There must be a template associated with the signature
348      */
349     if (strlen (Signature) != ACPI_NAME_SIZE)
350     {
351         fprintf (stderr,
352             "%s: Invalid ACPI table signature "
353             "(length must be 4 characters)\n", Signature);
354         return (AE_ERROR);
355     }
356 
357     /*
358      * Some slack for the two strange tables whose name is different than
359      * their signatures: MADT->APIC and FADT->FACP.
360      */
361     if (!strcmp (Signature, "MADT"))
362     {
363         Signature = "APIC";
364     }
365     else if (!strcmp (Signature, "FADT"))
366     {
367         Signature = "FACP";
368     }
369 
370     /* TableData will point to the template */
371 
372     TableData = AcpiDmGetTableData (Signature);
373     if (TableData)
374     {
375         if (!TableData->Template)
376         {
377             fprintf (stderr, "%4.4s: No template available\n", Signature);
378             return (AE_ERROR);
379         }
380     }
381     else if (!AcpiUtIsSpecialTable (Signature))
382     {
383         fprintf (stderr,
384             "%4.4s: Unrecognized ACPI table signature\n", Signature);
385         return (AE_ERROR);
386     }
387 
388     Status = DtCreateOneTemplate (Signature, TableCount, TableData);
389     return (Status);
390 }
391 
392 
393 /*******************************************************************************
394  *
395  * FUNCTION:    DtCreateAllTemplates
396  *
397  * PARAMETERS:  None
398  *
399  * RETURN:      Status
400  *
401  * DESCRIPTION: Create all currently defined template files
402  *
403  ******************************************************************************/
404 
405 static ACPI_STATUS
406 DtCreateAllTemplates (
407     void)
408 {
409     const ACPI_DMTABLE_DATA *TableData;
410     ACPI_STATUS             Status;
411 
412 
413     fprintf (stderr, "Creating all supported Template files\n");
414 
415     /* Walk entire ACPI table data structure */
416 
417     for (TableData = AcpiDmTableData; TableData->Signature; TableData++)
418     {
419         /* If table has a template, create the template file */
420 
421         if (TableData->Template)
422         {
423             Status = DtCreateOneTemplate (TableData->Signature,
424                 0, TableData);
425             if (ACPI_FAILURE (Status))
426             {
427                 return (Status);
428             }
429         }
430     }
431 
432     /*
433      * Create the special ACPI tables:
434      * 1) DSDT/SSDT are AML tables, not data tables
435      * 2) FACS and RSDP have non-standard headers
436      */
437     Status = DtCreateOneTemplate (ACPI_SIG_DSDT, 0, NULL);
438     if (ACPI_FAILURE (Status))
439     {
440         return (Status);
441     }
442 
443     Status = DtCreateOneTemplate (ACPI_SIG_SSDT, 0, NULL);
444     if (ACPI_FAILURE (Status))
445     {
446         return (Status);
447     }
448 
449     Status = DtCreateOneTemplate (ACPI_SIG_OSDT, 0, NULL);
450     if (ACPI_FAILURE (Status))
451     {
452         return (Status);
453     }
454 
455     Status = DtCreateOneTemplate (ACPI_SIG_FACS, 0, NULL);
456     if (ACPI_FAILURE (Status))
457     {
458         return (Status);
459     }
460 
461     Status = DtCreateOneTemplate (ACPI_RSDP_NAME, 0, NULL);
462     if (ACPI_FAILURE (Status))
463     {
464         return (Status);
465     }
466 
467     return (AE_OK);
468 }
469 
470 
471 /*******************************************************************************
472  *
473  * FUNCTION:    DtCreateOneTemplate
474  *
475  * PARAMETERS:  Signature           - ACPI signature, NULL terminated.
476  *              TableCount          - Used for SSDTs in same file as DSDT
477  *              TableData           - Entry in ACPI table data structure.
478  *                                    NULL if a special ACPI table.
479  *
480  * RETURN:      Status
481  *
482  * DESCRIPTION: Create one template source file for the requested ACPI table.
483  *
484  ******************************************************************************/
485 
486 static ACPI_STATUS
487 DtCreateOneTemplate (
488     char                    *Signature,
489     UINT32                  TableCount,
490     const ACPI_DMTABLE_DATA  *TableData)
491 {
492     char                    *DisasmFilename;
493     FILE                    *File;
494     ACPI_STATUS             Status = AE_OK;
495     int                     Actual;
496     UINT32                  i;
497 
498 
499     /* New file will have a .asl suffix */
500 
501     DisasmFilename = FlGenerateFilename (
502         Signature, FILE_SUFFIX_ASL_CODE);
503     if (!DisasmFilename)
504     {
505         fprintf (stderr, "Could not generate output filename\n");
506         return (AE_ERROR);
507     }
508 
509     AcpiUtStrlwr (DisasmFilename);
510     if (!UtQueryForOverwrite (DisasmFilename))
511     {
512         return (AE_ERROR);
513     }
514 
515     File = fopen (DisasmFilename, "w+");
516     if (!File)
517     {
518         fprintf (stderr, "Could not open output file %s\n",
519             DisasmFilename);
520         return (AE_ERROR);
521     }
522 
523     /* Emit the common file header */
524 
525     AcpiOsRedirectOutput (File);
526 
527     AcpiOsPrintf ("/*\n");
528     AcpiOsPrintf (ACPI_COMMON_HEADER ("iASL Compiler/Disassembler", " * "));
529 
530     if (TableCount == 0)
531     {
532         AcpiOsPrintf (" * Template for [%4.4s] ACPI Table",
533             Signature);
534     }
535     else
536     {
537         AcpiOsPrintf (" * Template for [%4.4s] and %u [SSDT] ACPI Tables",
538             Signature, TableCount);
539     }
540 
541     /* Dump the actual ACPI table */
542 
543     if (TableData)
544     {
545         /* Normal case, tables that appear in AcpiDmTableData */
546 
547         AcpiOsPrintf (" (static data table)\n");
548 
549         if (Gbl_VerboseTemplates)
550         {
551             AcpiOsPrintf (" * Format: [HexOffset DecimalOffset ByteLength]"
552                 "  FieldName : HexFieldValue\n */\n\n");
553         }
554         else
555         {
556             AcpiOsPrintf (" * Format: [ByteLength]"
557                 "  FieldName : HexFieldValue\n */\n");
558         }
559 
560         AcpiDmDumpDataTable (ACPI_CAST_PTR (ACPI_TABLE_HEADER,
561             TableData->Template));
562     }
563     else
564     {
565         /* Special ACPI tables - DSDT, SSDT, OSDT, FACS, RSDP */
566 
567         AcpiOsPrintf (" (AML byte code table)\n");
568         AcpiOsPrintf (" */\n");
569 
570         if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_DSDT))
571         {
572             Actual = DtEmitDefinitionBlock (
573                 File, DisasmFilename, ACPI_SIG_DSDT, 1);
574             if (Actual < 0)
575             {
576                 Status = AE_ERROR;
577                 goto Cleanup;
578             }
579 
580             /* Emit any requested SSDTs into the same file */
581 
582             for (i = 1; i <= TableCount; i++)
583             {
584                 Actual = DtEmitDefinitionBlock (
585                     File, DisasmFilename, ACPI_SIG_SSDT, i + 1);
586                 if (Actual < 0)
587                 {
588                     Status = AE_ERROR;
589                     goto Cleanup;
590                 }
591             }
592         }
593         else if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_SSDT))
594         {
595             Actual = DtEmitDefinitionBlock (
596                 File, DisasmFilename, ACPI_SIG_SSDT, 1);
597             if (Actual < 0)
598             {
599                 Status = AE_ERROR;
600                 goto Cleanup;
601             }
602         }
603         else if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_OSDT))
604         {
605             Actual = DtEmitDefinitionBlock (
606                 File, DisasmFilename, ACPI_SIG_OSDT, 1);
607             if (Actual < 0)
608             {
609                 Status = AE_ERROR;
610                 goto Cleanup;
611             }
612         }
613         else if (ACPI_COMPARE_NAME (Signature, ACPI_SIG_FACS))
614         {
615             AcpiDmDumpDataTable (ACPI_CAST_PTR (ACPI_TABLE_HEADER,
616                 TemplateFacs));
617         }
618         else if (ACPI_COMPARE_NAME (Signature, ACPI_RSDP_NAME))
619         {
620             AcpiDmDumpDataTable (ACPI_CAST_PTR (ACPI_TABLE_HEADER,
621                 TemplateRsdp));
622         }
623         else
624         {
625             fprintf (stderr,
626                 "%4.4s, Unrecognized ACPI table signature\n", Signature);
627             Status = AE_ERROR;
628             goto Cleanup;
629         }
630     }
631 
632     if (TableCount == 0)
633     {
634         fprintf (stderr,
635             "Created ACPI table template for [%4.4s], "
636             "written to \"%s\"\n",
637             Signature, DisasmFilename);
638     }
639     else
640     {
641         fprintf (stderr,
642             "Created ACPI table templates for [%4.4s] "
643             "and %u [SSDT], written to \"%s\"\n",
644             Signature, TableCount, DisasmFilename);
645     }
646 
647 Cleanup:
648     fclose (File);
649     AcpiOsRedirectOutput (stdout);
650     return (Status);
651 }
652 
653 
654 /*******************************************************************************
655  *
656  * FUNCTION:    DtEmitDefinitionBlock
657  *
658  * PARAMETERS:  File                - An open file for the block
659  *              Filename            - Filename for same, for error msg(s)
660  *              Signature           - ACPI signature for the block
661  *              Instance            - Used for multiple SSDTs in the same file
662  *
663  * RETURN:      Status from fprintf
664  *
665  * DESCRIPTION: Emit the raw ASL for a complete Definition Block (DSDT or SSDT)
666  *
667  * Note: The AMLFileName parameter for DefinitionBlock is left as a NULL
668  * string. This allows the compiler to create the output AML filename from
669  * the input filename.
670  *
671  ******************************************************************************/
672 
673 static int
674 DtEmitDefinitionBlock (
675     FILE                    *File,
676     char                    *Filename,
677     char                    *Signature,
678     UINT32                  Instance)
679 {
680     int                     Status;
681 
682 
683     Status = fprintf (File,
684         "DefinitionBlock (\"\", \"%4.4s\", 2, \"Intel\", \"_%4.4s_%.2X\", 0x00000001)\n"
685         "{\n"
686         "    Method (%2.2s%.2X)\n"
687         "    {\n"
688         "    }\n"
689         "}\n\n",
690         Signature, Signature, Instance, Signature, Instance);
691 
692     if (Status < 0)
693     {
694         fprintf (stderr,
695             "Could not write %4.4s to output file %s\n",
696             Signature, Filename);
697     }
698 
699     return (Status);
700 }
701