1 /******************************************************************************
2 *
3 * Module Name: aslcodegen - AML code 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 "aslcompiler.y.h"
154 #include "amlcode.h"
155 #include "acconvert.h"
156
157 #define _COMPONENT ACPI_COMPILER
158 ACPI_MODULE_NAME ("aslcodegen")
159
160 /* Local prototypes */
161
162 static ACPI_STATUS
163 CgAmlWriteWalk (
164 ACPI_PARSE_OBJECT *Op,
165 UINT32 Level,
166 void *Context);
167
168 static void
169 CgWriteAmlOpcode (
170 ACPI_PARSE_OBJECT *Op);
171
172 static void
173 CgWriteTableHeader (
174 ACPI_PARSE_OBJECT *Op);
175
176 static void
177 CgCloseTable (
178 void);
179
180 static void
181 CgWriteNode (
182 ACPI_PARSE_OBJECT *Op);
183
184
185 /*******************************************************************************
186 *
187 * FUNCTION: CgGenerateAmlOutput
188 *
189 * PARAMETERS: None.
190 *
191 * RETURN: None
192 *
193 * DESCRIPTION: Generate AML code. Currently generates the listing file
194 * simultaneously.
195 *
196 ******************************************************************************/
197
198 void
CgGenerateAmlOutput(void)199 CgGenerateAmlOutput (
200 void)
201 {
202
203 /* Generate the AML output file */
204
205 FlSeekFile (ASL_FILE_SOURCE_OUTPUT, 0);
206 Gbl_SourceLine = 0;
207 Gbl_NextError = Gbl_ErrorLog;
208
209 TrWalkParseTree (Gbl_ParseTreeRoot, ASL_WALK_VISIT_DOWNWARD,
210 CgAmlWriteWalk, NULL, NULL);
211
212 DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_HEADER2);
213 CgCloseTable ();
214 }
215
216
217 /*******************************************************************************
218 *
219 * FUNCTION: CgAmlWriteWalk
220 *
221 * PARAMETERS: ASL_WALK_CALLBACK
222 *
223 * RETURN: Status
224 *
225 * DESCRIPTION: Parse tree walk to generate the AML code.
226 *
227 ******************************************************************************/
228
229 static ACPI_STATUS
CgAmlWriteWalk(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)230 CgAmlWriteWalk (
231 ACPI_PARSE_OBJECT *Op,
232 UINT32 Level,
233 void *Context)
234 {
235
236 /* Generate the AML for this node */
237
238 CgWriteNode (Op);
239
240 if (!Gbl_DebugFlag)
241 {
242 return (AE_OK);
243 }
244
245 /* Print header at level 0. Alignment assumes 32-bit pointers */
246
247 if (!Level)
248 {
249 DbgPrint (ASL_TREE_OUTPUT,
250 "\nFinal parse tree used for AML output:\n");
251 DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_HEADER2);
252 }
253
254 /* Dump ParseOp name and possible value */
255
256 switch (Op->Asl.ParseOpcode)
257 {
258 case PARSEOP_NAMESEG:
259 case PARSEOP_NAMESTRING:
260 case PARSEOP_METHODCALL:
261 case PARSEOP_STRING_LITERAL:
262
263 UtDumpStringOp (Op, Level);
264 break;
265
266 default:
267
268 UtDumpBasicOp (Op, Level);
269 break;
270 }
271
272 DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_DEBUG2,
273 /* 1 */ (UINT32) Op->Asl.Value.Integer,
274 /* 2 */ Op->Asl.ParseOpcode,
275 /* 3 */ Op->Asl.AmlOpcode,
276 /* 4 */ Op->Asl.AmlOpcodeLength,
277 /* 5 */ Op->Asl.AmlPkgLenBytes,
278 /* 6 */ Op->Asl.AmlLength,
279 /* 7 */ Op->Asl.AmlSubtreeLength,
280 /* 8 */ Op->Asl.Parent ? Op->Asl.Parent->Asl.AmlSubtreeLength : 0,
281 /* 9 */ Op,
282 /* 10 */ Op->Asl.Parent,
283 /* 11 */ Op->Asl.Child,
284 /* 12 */ Op->Asl.Next,
285 /* 13 */ Op->Asl.CompileFlags,
286 /* 14 */ Op->Asl.AcpiBtype,
287 /* 15 */ Op->Asl.FinalAmlLength,
288 /* 16 */ Op->Asl.Column,
289 /* 17 */ Op->Asl.LineNumber,
290 /* 18 */ Op->Asl.EndLine,
291 /* 19 */ Op->Asl.LogicalLineNumber,
292 /* 20 */ Op->Asl.EndLogicalLine);
293
294 TrPrintOpFlags (Op->Asl.CompileFlags, ASL_TREE_OUTPUT);
295 DbgPrint (ASL_TREE_OUTPUT, "\n");
296 return (AE_OK);
297 }
298
299
300 /*******************************************************************************
301 *
302 * FUNCTION: CgLocalWriteAmlData
303 *
304 * PARAMETERS: Op - Current parse op
305 * Buffer - Buffer to write
306 * Length - Size of data in buffer
307 *
308 * RETURN: None
309 *
310 * DESCRIPTION: Write a buffer of AML data to the AML output file.
311 *
312 ******************************************************************************/
313
314 void
CgLocalWriteAmlData(ACPI_PARSE_OBJECT * Op,void * Buffer,UINT32 Length)315 CgLocalWriteAmlData (
316 ACPI_PARSE_OBJECT *Op,
317 void *Buffer,
318 UINT32 Length)
319 {
320
321 /* Write the raw data to the AML file */
322
323 FlWriteFile (ASL_FILE_AML_OUTPUT, Buffer, Length);
324
325 /* Update the final AML length for this node (used for listings) */
326
327 if (Op)
328 {
329 Op->Asl.FinalAmlLength += Length;
330 }
331 }
332
333
334 /*******************************************************************************
335 *
336 * FUNCTION: CgWriteAmlOpcode
337 *
338 * PARAMETERS: Op - Parse node with an AML opcode
339 *
340 * RETURN: None.
341 *
342 * DESCRIPTION: Write the AML opcode corresponding to a parse node.
343 *
344 ******************************************************************************/
345
346 static void
CgWriteAmlOpcode(ACPI_PARSE_OBJECT * Op)347 CgWriteAmlOpcode (
348 ACPI_PARSE_OBJECT *Op)
349 {
350 UINT8 PkgLenFirstByte;
351 UINT32 i;
352 union {
353 UINT16 Opcode;
354 UINT8 OpcodeBytes[2];
355 } Aml;
356 union {
357 UINT32 Len;
358 UINT8 LenBytes[4];
359 } PkgLen;
360
361
362 /* We expect some DEFAULT_ARGs, just ignore them */
363
364 if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
365 {
366 return;
367 }
368
369 /*
370 * Before printing the bytecode, generate comment byte codes
371 * associated with this node.
372 */
373 if (AcpiGbl_CaptureComments)
374 {
375 CgWriteAmlComment(Op);
376 }
377
378 switch (Op->Asl.AmlOpcode)
379 {
380 case AML_UNASSIGNED_OPCODE:
381
382 /* These opcodes should not get here */
383
384 printf ("Found a node with an unassigned AML opcode\n");
385 FlPrintFile (ASL_FILE_STDERR,
386 "Found a node with an unassigned AML opcode\n");
387 return;
388
389 case AML_INT_RESERVEDFIELD_OP:
390
391 /* Special opcodes for within a field definition */
392
393 Aml.Opcode = AML_FIELD_OFFSET_OP;
394 break;
395
396 case AML_INT_ACCESSFIELD_OP:
397
398 Aml.Opcode = AML_FIELD_ACCESS_OP;
399 break;
400
401 case AML_INT_CONNECTION_OP:
402
403 Aml.Opcode = AML_FIELD_CONNECTION_OP;
404 break;
405
406 default:
407
408 Aml.Opcode = Op->Asl.AmlOpcode;
409 break;
410 }
411
412
413 switch (Aml.Opcode)
414 {
415 case AML_PACKAGE_LENGTH:
416
417 /* Value is the length to be encoded (Used in field definitions) */
418
419 PkgLen.Len = (UINT32) Op->Asl.Value.Integer;
420 break;
421
422 default:
423
424 /* Check for two-byte opcode */
425
426 if (Aml.Opcode > 0x00FF)
427 {
428 /* Write the high byte first */
429
430 CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[1], 1);
431 }
432
433 CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[0], 1);
434
435 /* Subtreelength doesn't include length of package length bytes */
436
437 PkgLen.Len = Op->Asl.AmlSubtreeLength + Op->Asl.AmlPkgLenBytes;
438 break;
439 }
440
441 /* Does this opcode have an associated "PackageLength" field? */
442
443 if (Op->Asl.CompileFlags & OP_AML_PACKAGE)
444 {
445 if (Op->Asl.AmlPkgLenBytes == 1)
446 {
447 /* Simplest case -- no bytes to follow, just write the count */
448
449 CgLocalWriteAmlData (Op, &PkgLen.LenBytes[0], 1);
450 }
451 else if (Op->Asl.AmlPkgLenBytes != 0)
452 {
453 /*
454 * Encode the "bytes to follow" in the first byte, top two bits.
455 * The low-order nybble of the length is in the bottom 4 bits
456 */
457 PkgLenFirstByte = (UINT8)
458 (((UINT32) (Op->Asl.AmlPkgLenBytes - 1) << 6) |
459 (PkgLen.LenBytes[0] & 0x0F));
460
461 CgLocalWriteAmlData (Op, &PkgLenFirstByte, 1);
462
463 /*
464 * Shift the length over by the 4 bits we just stuffed
465 * in the first byte
466 */
467 PkgLen.Len >>= 4;
468
469 /*
470 * Now we can write the remaining bytes -
471 * either 1, 2, or 3 bytes
472 */
473 for (i = 0; i < (UINT32) (Op->Asl.AmlPkgLenBytes - 1); i++)
474 {
475 CgLocalWriteAmlData (Op, &PkgLen.LenBytes[i], 1);
476 }
477 }
478 }
479
480 switch (Aml.Opcode)
481 {
482 case AML_BYTE_OP:
483
484 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 1);
485 break;
486
487 case AML_WORD_OP:
488
489 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 2);
490 break;
491
492 case AML_DWORD_OP:
493
494 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 4);
495 break;
496
497 case AML_QWORD_OP:
498
499 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 8);
500 break;
501
502 case AML_STRING_OP:
503
504 CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
505 break;
506
507 default:
508
509 /* All data opcodes must appear above */
510
511 break;
512 }
513 }
514
515
516 /*******************************************************************************
517 *
518 * FUNCTION: CgWriteTableHeader
519 *
520 * PARAMETERS: Op - The DEFINITIONBLOCK node
521 *
522 * RETURN: None
523 *
524 * DESCRIPTION: Write a table header corresponding to the DEFINITIONBLOCK
525 *
526 ******************************************************************************/
527
528 static void
CgWriteTableHeader(ACPI_PARSE_OBJECT * Op)529 CgWriteTableHeader (
530 ACPI_PARSE_OBJECT *Op)
531 {
532 ACPI_PARSE_OBJECT *Child;
533 UINT32 CommentLength;
534 ACPI_COMMENT_NODE *Current;
535
536
537 /* AML filename */
538
539 Child = Op->Asl.Child;
540
541 /* Signature */
542
543 Child = Child->Asl.Next;
544
545 /*
546 * For ASL-/ASL+ converter: replace the table signature with
547 * "XXXX" and save the original table signature. This results in an AML
548 * file with the signature "XXXX". The converter should remove this AML
549 * file. In the event where this AML file does not get deleted, the
550 * "XXXX" table signature prevents this AML file from running on the AML
551 * interpreter.
552 */
553 if (AcpiGbl_CaptureComments)
554 {
555 strncpy(AcpiGbl_TableSig, Child->Asl.Value.String, ACPI_NAME_SIZE);
556 Child->Asl.Value.String = ACPI_SIG_XXXX;
557 }
558
559 strncpy (TableHeader.Signature, Child->Asl.Value.String, ACPI_NAME_SIZE);
560
561 /* Revision */
562
563 Child = Child->Asl.Next;
564 TableHeader.Revision = (UINT8) Child->Asl.Value.Integer;
565
566 /* Command-line Revision override */
567
568 if (Gbl_RevisionOverride)
569 {
570 TableHeader.Revision = Gbl_RevisionOverride;
571 }
572
573 /* OEMID */
574
575 Child = Child->Asl.Next;
576 strncpy (TableHeader.OemId, Child->Asl.Value.String, ACPI_OEM_ID_SIZE);
577
578 /* OEM TableID */
579
580 Child = Child->Asl.Next;
581 strncpy (TableHeader.OemTableId, Child->Asl.Value.String, ACPI_OEM_TABLE_ID_SIZE);
582
583 /* OEM Revision */
584
585 Child = Child->Asl.Next;
586 TableHeader.OemRevision = (UINT32) Child->Asl.Value.Integer;
587
588 /* Compiler ID */
589
590 ACPI_MOVE_NAME (TableHeader.AslCompilerId, ASL_CREATOR_ID);
591
592 /* Compiler version */
593
594 TableHeader.AslCompilerRevision = ACPI_CA_VERSION;
595
596 /* Table length. Checksum zero for now, will rewrite later */
597
598 TableHeader.Length = sizeof (ACPI_TABLE_HEADER) +
599 Op->Asl.AmlSubtreeLength;
600
601 /* Calculate the comment lengths for this definition block parseOp */
602
603 if (AcpiGbl_CaptureComments)
604 {
605 CvDbgPrint ("Calculating comment lengths for %s in write header\n",
606 Op->Asl.ParseOpName);
607
608 /*
609 * Take the filename without extensions, add 3 for the new extension
610 * and another 3 for the a908 bytecode and null terminator.
611 */
612 TableHeader.Length += strrchr (Gbl_ParseTreeRoot->Asl.Filename, '.')
613 - Gbl_ParseTreeRoot->Asl.Filename + 1 + 3 + 3;
614 Op->Asl.AmlSubtreeLength +=
615 strlen (Gbl_ParseTreeRoot->Asl.Filename) + 3;
616 CvDbgPrint (" Length: %lu\n",
617 strlen (Gbl_ParseTreeRoot->Asl.Filename) + 3);
618
619 if (Op->Asl.CommentList)
620 {
621 Current = Op->Asl.CommentList;
622 while (Current)
623 {
624 CommentLength = strlen (Current->Comment)+3;
625 CvDbgPrint ("Length of standard comment): %d\n", CommentLength);
626 CvDbgPrint (" Comment string: %s\n\n", Current->Comment);
627 TableHeader.Length += CommentLength;
628 Op->Asl.AmlSubtreeLength += CommentLength;
629 Current = Current->Next;
630 CvDbgPrint (" Length: %u\n", CommentLength);
631 }
632 }
633 if (Op->Asl.CloseBraceComment)
634 {
635 CommentLength = strlen (Op->Asl.CloseBraceComment)+3;
636 CvDbgPrint ("Length of inline comment +3: %d\n", CommentLength);
637 CvDbgPrint (" Comment string: %s\n\n", Op->Asl.CloseBraceComment);
638 TableHeader.Length += CommentLength;
639 Op->Asl.AmlSubtreeLength += CommentLength;
640 CvDbgPrint (" Length: %u\n", CommentLength);
641 }
642 }
643
644 TableHeader.Checksum = 0;
645
646 Op->Asl.FinalAmlOffset = ftell (Gbl_Files[ASL_FILE_AML_OUTPUT].Handle);
647
648 /* Write entire header and clear the table header global */
649
650 CgLocalWriteAmlData (Op, &TableHeader, sizeof (ACPI_TABLE_HEADER));
651 memset (&TableHeader, 0, sizeof (ACPI_TABLE_HEADER));
652 }
653
654
655 /*******************************************************************************
656 *
657 * FUNCTION: CgUpdateHeader
658 *
659 * PARAMETERS: Op - Op for the Definition Block
660 *
661 * RETURN: None.
662 *
663 * DESCRIPTION: Complete the ACPI table by calculating the checksum and
664 * re-writing the header for the input definition block
665 *
666 ******************************************************************************/
667
668 static void
CgUpdateHeader(ACPI_PARSE_OBJECT * Op)669 CgUpdateHeader (
670 ACPI_PARSE_OBJECT *Op)
671 {
672 signed char Sum;
673 UINT32 i;
674 UINT32 Length;
675 UINT8 FileByte;
676 UINT8 Checksum;
677
678
679 /* Calculate the checksum over the entire definition block */
680
681 Sum = 0;
682 Length = sizeof (ACPI_TABLE_HEADER) + Op->Asl.AmlSubtreeLength;
683 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset);
684
685 for (i = 0; i < Length; i++)
686 {
687 if (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) != AE_OK)
688 {
689 printf ("EOF while reading checksum bytes\n");
690 return;
691 }
692
693 Sum = (signed char) (Sum + FileByte);
694 }
695
696 Checksum = (UINT8) (0 - Sum);
697
698 /* Re-write the the checksum byte */
699
700 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset +
701 ACPI_OFFSET (ACPI_TABLE_HEADER, Checksum));
702
703 FlWriteFile (ASL_FILE_AML_OUTPUT, &Checksum, 1);
704 }
705
706
707 /*******************************************************************************
708 *
709 * FUNCTION: CgCloseTable
710 *
711 * PARAMETERS: None.
712 *
713 * RETURN: None.
714 *
715 * DESCRIPTION: Complete the ACPI table by calculating the checksum and
716 * re-writing each table header. This allows support for
717 * multiple definition blocks in a single source file.
718 *
719 ******************************************************************************/
720
721 static void
CgCloseTable(void)722 CgCloseTable (
723 void)
724 {
725 ACPI_PARSE_OBJECT *Op;
726
727
728 /* Process all definition blocks */
729
730 Op = Gbl_ParseTreeRoot->Asl.Child;
731 while (Op)
732 {
733 CgUpdateHeader (Op);
734 Op = Op->Asl.Next;
735 }
736 }
737
738
739 /*******************************************************************************
740 *
741 * FUNCTION: CgWriteNode
742 *
743 * PARAMETERS: Op - Parse node to write.
744 *
745 * RETURN: None.
746 *
747 * DESCRIPTION: Write the AML that corresponds to a parse node.
748 *
749 ******************************************************************************/
750
751 static void
CgWriteNode(ACPI_PARSE_OBJECT * Op)752 CgWriteNode (
753 ACPI_PARSE_OBJECT *Op)
754 {
755 ASL_RESOURCE_NODE *Rnode;
756
757
758 /* Write all comments here. */
759
760 if (AcpiGbl_CaptureComments)
761 {
762 CgWriteAmlComment(Op);
763 }
764
765 /* Always check for DEFAULT_ARG and other "Noop" nodes */
766 /* TBD: this may not be the best place for this check */
767
768 if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) ||
769 (Op->Asl.ParseOpcode == PARSEOP_INCLUDE) ||
770 (Op->Asl.ParseOpcode == PARSEOP_INCLUDE_END))
771 {
772 return;
773 }
774
775 if ((Op->Asl.ParseOpcode == PARSEOP_EXTERNAL) &&
776 Gbl_DoExternals == FALSE)
777 {
778 return;
779 }
780
781 Op->Asl.FinalAmlLength = 0;
782
783 switch (Op->Asl.AmlOpcode)
784 {
785 case AML_RAW_DATA_BYTE:
786 case AML_RAW_DATA_WORD:
787 case AML_RAW_DATA_DWORD:
788 case AML_RAW_DATA_QWORD:
789
790 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, Op->Asl.AmlLength);
791 return;
792
793
794 case AML_RAW_DATA_BUFFER:
795
796 CgLocalWriteAmlData (Op, Op->Asl.Value.Buffer, Op->Asl.AmlLength);
797 return;
798
799
800 case AML_RAW_DATA_CHAIN:
801
802 Rnode = ACPI_CAST_PTR (ASL_RESOURCE_NODE, Op->Asl.Value.Buffer);
803 while (Rnode)
804 {
805 CgLocalWriteAmlData (Op, Rnode->Buffer, Rnode->BufferLength);
806 Rnode = Rnode->Next;
807 }
808 return;
809
810 default:
811
812 /* Internal data opcodes must all appear above */
813
814 break;
815 }
816
817 switch (Op->Asl.ParseOpcode)
818 {
819 case PARSEOP_DEFAULT_ARG:
820
821 break;
822
823 case PARSEOP_DEFINITION_BLOCK:
824
825 CgWriteTableHeader (Op);
826 if (AcpiGbl_CaptureComments)
827 {
828 CgWriteAmlDefBlockComment (Op);
829 }
830 break;
831
832 case PARSEOP_NAMESEG:
833 case PARSEOP_NAMESTRING:
834 case PARSEOP_METHODCALL:
835
836 CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
837 break;
838
839 default:
840
841 CgWriteAmlOpcode (Op);
842 break;
843 }
844 }
845