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 - 2021, 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_NAMESEG (Signature, ACPI_SIG_DSDT) ||
208         ACPI_COMPARE_NAMESEG (Signature, ACPI_SIG_OSDT) ||
209         ACPI_COMPARE_NAMESEG (Signature, ACPI_SIG_SSDT) ||
210         ACPI_COMPARE_NAMESEG (Signature, ACPI_SIG_FACS) ||
211         ACPI_COMPARE_NAMESEG (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         fprintf (stderr, "Creating default template: [DSDT]\n");
259         Status = DtCreateOneTemplateFile (ACPI_SIG_DSDT, 0);
260         goto Exit;
261     }
262 
263     AcpiGbl_Optind--;
264     Signature = argv[AcpiGbl_Optind];
265     AcpiUtStrupr (Signature);
266 
267     /*
268      * Multiple SSDT support (-T <ssdt count>)
269      */
270     TableCount = strtoul (Signature, &End, 0);
271     if (Signature != End)
272     {
273         /* The count is used for table ID and method name - max is 254(+1) */
274 
275         if (TableCount > 254)
276         {
277             fprintf (stderr, "%u SSDTs requested, maximum is 254\n",
278                 (unsigned int) TableCount);
279 
280             Status = AE_LIMIT;
281             goto Exit;
282         }
283 
284         Status = DtCreateOneTemplateFile (ACPI_SIG_DSDT, TableCount);
285         goto Exit;
286     }
287 
288     if (!strcmp (Signature, "ALL"))
289     {
290         /* Create all available/known templates */
291 
292         Status = DtCreateAllTemplates ();
293         goto Exit;
294     }
295 
296     /*
297      * Normal case: Create template for each signature
298      */
299     while (argv[AcpiGbl_Optind])
300     {
301         Signature = argv[AcpiGbl_Optind];
302         AcpiUtStrupr (Signature);
303 
304         Status = DtCreateOneTemplateFile (Signature, 0);
305         if (ACPI_FAILURE (Status))
306         {
307             goto Exit;
308         }
309 
310         AcpiGbl_Optind++;
311     }
312 
313 
314 Exit:
315     /* Shutdown ACPICA subsystem */
316 
317     (void) AcpiTerminate ();
318     UtDeleteLocalCaches ();
319     return (Status);
320 }
321 
322 
323 /*******************************************************************************
324  *
325  * FUNCTION:    DtCreateOneTemplateFile
326  *
327  * PARAMETERS:  Signature           - ACPI table signature
328  *
329  * RETURN:      Status
330  *
331  * DESCRIPTION: Create one template file of the requested signature.
332  *
333  ******************************************************************************/
334 
335 static ACPI_STATUS
336 DtCreateOneTemplateFile (
337     char                    *Signature,
338     UINT32                  TableCount)
339 {
340     const ACPI_DMTABLE_DATA *TableData;
341     ACPI_STATUS             Status;
342 
343 
344     /*
345      * Validate signature and get the template data:
346      *  1) Signature must be 4 characters
347      *  2) Signature must be a recognized ACPI table
348      *  3) There must be a template associated with the signature
349      */
350     if (strlen (Signature) != ACPI_NAMESEG_SIZE)
351     {
352         fprintf (stderr,
353             "%s: Invalid ACPI table signature "
354             "(length must be 4 characters)\n", Signature);
355         return (AE_ERROR);
356     }
357 
358     /*
359      * Some slack for the two strange tables whose name is different than
360      * their signatures: MADT->APIC and FADT->FACP.
361      */
362     if (!strcmp (Signature, "MADT"))
363     {
364         Signature = "APIC";
365     }
366     else if (!strcmp (Signature, "FADT"))
367     {
368         Signature = "FACP";
369     }
370 
371     /* TableData will point to the template */
372 
373     TableData = AcpiDmGetTableData (Signature);
374     if (TableData)
375     {
376         if (!TableData->Template)
377         {
378             fprintf (stderr, "%4.4s: No template available\n", Signature);
379             return (AE_ERROR);
380         }
381     }
382     else if (!AcpiUtIsSpecialTable (Signature))
383     {
384         fprintf (stderr,
385             "%4.4s: Unrecognized ACPI table signature\n", Signature);
386         return (AE_ERROR);
387     }
388 
389     Status = DtCreateOneTemplate (Signature, TableCount, TableData);
390     return (Status);
391 }
392 
393 
394 /*******************************************************************************
395  *
396  * FUNCTION:    DtCreateAllTemplates
397  *
398  * PARAMETERS:  None
399  *
400  * RETURN:      Status
401  *
402  * DESCRIPTION: Create all currently defined template files
403  *
404  ******************************************************************************/
405 
406 static ACPI_STATUS
407 DtCreateAllTemplates (
408     void)
409 {
410     const ACPI_DMTABLE_DATA *TableData;
411     ACPI_STATUS             Status;
412 
413 
414     fprintf (stderr, "Creating all supported Template files\n");
415 
416     /* Walk entire ACPI table data structure */
417 
418     for (TableData = AcpiDmTableData; TableData->Signature; TableData++)
419     {
420         /* If table has a template, create the template file */
421 
422         if (TableData->Template)
423         {
424             Status = DtCreateOneTemplate (TableData->Signature,
425                 0, TableData);
426             if (ACPI_FAILURE (Status))
427             {
428                 return (Status);
429             }
430         }
431     }
432 
433     /*
434      * Create the special ACPI tables:
435      * 1) DSDT/SSDT are AML tables, not data tables
436      * 2) FACS and RSDP have non-standard headers
437      */
438     Status = DtCreateOneTemplate (ACPI_SIG_DSDT, 0, NULL);
439     if (ACPI_FAILURE (Status))
440     {
441         return (Status);
442     }
443 
444     Status = DtCreateOneTemplate (ACPI_SIG_SSDT, 0, NULL);
445     if (ACPI_FAILURE (Status))
446     {
447         return (Status);
448     }
449 
450     Status = DtCreateOneTemplate (ACPI_SIG_OSDT, 0, NULL);
451     if (ACPI_FAILURE (Status))
452     {
453         return (Status);
454     }
455 
456     Status = DtCreateOneTemplate (ACPI_SIG_FACS, 0, NULL);
457     if (ACPI_FAILURE (Status))
458     {
459         return (Status);
460     }
461 
462     Status = DtCreateOneTemplate (ACPI_RSDP_NAME, 0, NULL);
463     if (ACPI_FAILURE (Status))
464     {
465         return (Status);
466     }
467 
468     return (AE_OK);
469 }
470 
471 
472 /*******************************************************************************
473  *
474  * FUNCTION:    DtCreateOneTemplate
475  *
476  * PARAMETERS:  Signature           - ACPI signature, NULL terminated.
477  *              TableCount          - Used for SSDTs in same file as DSDT
478  *              TableData           - Entry in ACPI table data structure.
479  *                                    NULL if a special ACPI table.
480  *
481  * RETURN:      Status
482  *
483  * DESCRIPTION: Create one template source file for the requested ACPI table.
484  *
485  ******************************************************************************/
486 
487 static ACPI_STATUS
488 DtCreateOneTemplate (
489     char                    *Signature,
490     UINT32                  TableCount,
491     const ACPI_DMTABLE_DATA  *TableData)
492 {
493     char                    *DisasmFilename;
494     FILE                    *File;
495     ACPI_STATUS             Status = AE_OK;
496     int                     Actual;
497     UINT32                  i;
498 
499 
500     /* New file will have a .asl suffix */
501 
502     DisasmFilename = FlGenerateFilename (
503         Signature, FILE_SUFFIX_ASL_CODE);
504     if (!DisasmFilename)
505     {
506         fprintf (stderr, "Could not generate output filename\n");
507         return (AE_ERROR);
508     }
509 
510     AcpiUtStrlwr (DisasmFilename);
511     if (!UtQueryForOverwrite (DisasmFilename))
512     {
513         return (AE_OK);
514     }
515 
516     File = fopen (DisasmFilename, "w+");
517     if (!File)
518     {
519         fprintf (stderr, "Could not open output file %s\n",
520             DisasmFilename);
521         return (AE_ERROR);
522     }
523 
524     /* Emit the common file header */
525 
526     AcpiOsRedirectOutput (File);
527 
528     AcpiOsPrintf ("/*\n");
529     AcpiOsPrintf (ACPI_COMMON_HEADER ("iASL Compiler/Disassembler", " * "));
530 
531     if (TableCount == 0)
532     {
533         AcpiOsPrintf (" * Template for [%4.4s] ACPI Table",
534             Signature);
535     }
536     else
537     {
538         AcpiOsPrintf (" * Template for [%4.4s] and %u [SSDT] ACPI Tables",
539             Signature, TableCount);
540     }
541 
542     /* Dump the actual ACPI table */
543 
544     if (TableData)
545     {
546         /* Normal case, tables that appear in AcpiDmTableData */
547 
548         AcpiOsPrintf (" (static data table)\n");
549 
550         if (AslGbl_VerboseTemplates)
551         {
552             AcpiOsPrintf (" * Format: [HexOffset DecimalOffset ByteLength]"
553                 "  FieldName : HexFieldValue\n */\n\n");
554         }
555         else
556         {
557             AcpiOsPrintf (" * Format: [ByteLength]"
558                 "  FieldName : HexFieldValue\n */\n");
559         }
560 
561         AcpiDmDumpDataTable (ACPI_CAST_PTR (ACPI_TABLE_HEADER,
562             TableData->Template));
563     }
564     else
565     {
566         /* Special ACPI tables - DSDT, SSDT, OSDT, FACS, RSDP */
567 
568         AcpiOsPrintf (" (AML byte code table)\n");
569         AcpiOsPrintf (" */\n");
570 
571         if (ACPI_COMPARE_NAMESEG (Signature, ACPI_SIG_DSDT))
572         {
573             Actual = DtEmitDefinitionBlock (
574                 File, DisasmFilename, ACPI_SIG_DSDT, 1);
575             if (Actual < 0)
576             {
577                 Status = AE_ERROR;
578                 goto Cleanup;
579             }
580 
581             /* Emit any requested SSDTs into the same file */
582 
583             for (i = 1; i <= TableCount; i++)
584             {
585                 Actual = DtEmitDefinitionBlock (
586                     File, DisasmFilename, ACPI_SIG_SSDT, i + 1);
587                 if (Actual < 0)
588                 {
589                     Status = AE_ERROR;
590                     goto Cleanup;
591                 }
592             }
593         }
594         else if (ACPI_COMPARE_NAMESEG (Signature, ACPI_SIG_SSDT))
595         {
596             Actual = DtEmitDefinitionBlock (
597                 File, DisasmFilename, ACPI_SIG_SSDT, 1);
598             if (Actual < 0)
599             {
600                 Status = AE_ERROR;
601                 goto Cleanup;
602             }
603         }
604         else if (ACPI_COMPARE_NAMESEG (Signature, ACPI_SIG_OSDT))
605         {
606             Actual = DtEmitDefinitionBlock (
607                 File, DisasmFilename, ACPI_SIG_OSDT, 1);
608             if (Actual < 0)
609             {
610                 Status = AE_ERROR;
611                 goto Cleanup;
612             }
613         }
614         else if (ACPI_COMPARE_NAMESEG (Signature, ACPI_SIG_FACS))
615         {
616             AcpiDmDumpDataTable (ACPI_CAST_PTR (ACPI_TABLE_HEADER,
617                 TemplateFacs));
618         }
619         else if (ACPI_COMPARE_NAMESEG (Signature, ACPI_RSDP_NAME))
620         {
621             AcpiDmDumpDataTable (ACPI_CAST_PTR (ACPI_TABLE_HEADER,
622                 TemplateRsdp));
623         }
624         else
625         {
626             fprintf (stderr,
627                 "%4.4s, Unrecognized ACPI table signature\n", Signature);
628             Status = AE_ERROR;
629             goto Cleanup;
630         }
631     }
632 
633     if (TableCount == 0)
634     {
635         fprintf (stderr,
636             "Created ACPI table template for [%4.4s], "
637             "written to \"%s\"\n",
638             Signature, DisasmFilename);
639     }
640     else
641     {
642         fprintf (stderr,
643             "Created ACPI table templates for [%4.4s] "
644             "and %u [SSDT] in same file, written to \"%s\"\n",
645             Signature, TableCount, DisasmFilename);
646     }
647 
648 Cleanup:
649     fclose (File);
650     AcpiOsRedirectOutput (stdout);
651     return (Status);
652 }
653 
654 
655 /*******************************************************************************
656  *
657  * FUNCTION:    DtEmitDefinitionBlock
658  *
659  * PARAMETERS:  File                - An open file for the block
660  *              Filename            - Filename for same, for error msg(s)
661  *              Signature           - ACPI signature for the block
662  *              Instance            - Used for multiple SSDTs in the same file
663  *
664  * RETURN:      Status from fprintf
665  *
666  * DESCRIPTION: Emit the raw ASL for a complete Definition Block (DSDT or SSDT)
667  *
668  * Note: The AMLFileName parameter for DefinitionBlock is left as a NULL
669  * string. This allows the compiler to create the output AML filename from
670  * the input filename.
671  *
672  ******************************************************************************/
673 
674 static int
675 DtEmitDefinitionBlock (
676     FILE                    *File,
677     char                    *Filename,
678     char                    *Signature,
679     UINT32                  Instance)
680 {
681     int                     Status;
682 
683 
684     Status = fprintf (File,
685         "DefinitionBlock (\"\", \"%4.4s\", 2, \"Intel\", \"_%4.4s_%.2X\", 0x00000001)\n"
686         "{\n"
687         "    Method (%2.2s%.2X)\n"
688         "    {\n"
689         "    }\n"
690         "}\n\n",
691         Signature, Signature, Instance, Signature, Instance);
692 
693     if (Status < 0)
694     {
695         fprintf (stderr,
696             "Could not write %4.4s to output file %s\n",
697             Signature, Filename);
698     }
699 
700     return (Status);
701 }
702