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