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 - 2023, 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 #include "actbinfo.h"
157
158 #define _COMPONENT ACPI_COMPILER
159 ACPI_MODULE_NAME ("aslcodegen")
160
161 /* Local prototypes */
162
163 static ACPI_STATUS
164 CgAmlWriteWalk (
165 ACPI_PARSE_OBJECT *Op,
166 UINT32 Level,
167 void *Context);
168
169 static void
170 CgWriteAmlOpcode (
171 ACPI_PARSE_OBJECT *Op);
172
173 static void
174 CgWriteTableHeader (
175 ACPI_PARSE_OBJECT *Op);
176
177 static void
178 CgWriteNode (
179 ACPI_PARSE_OBJECT *Op);
180
181 static void
182 CgUpdateHeader (
183 ACPI_PARSE_OBJECT *Op);
184
185 static void
186 CgUpdateCdatHeader (
187 ACPI_PARSE_OBJECT *Op);
188
189
190 /*******************************************************************************
191 *
192 * FUNCTION: CgGenerateAmlOutput
193 *
194 * PARAMETERS: None.
195 *
196 * RETURN: None
197 *
198 * DESCRIPTION: Generate AML code. Currently generates the listing file
199 * simultaneously.
200 *
201 ******************************************************************************/
202
203 void
CgGenerateAmlOutput(void)204 CgGenerateAmlOutput (
205 void)
206 {
207
208 /* Generate the AML output file */
209
210 TrWalkParseTree (AslGbl_CurrentDB,
211 ASL_WALK_VISIT_DOWNWARD | ASL_WALK_VISIT_DB_SEPARATELY,
212 CgAmlWriteWalk, NULL, NULL);
213
214 DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_HEADER2);
215 if (AcpiGbl_CDAT)
216 {
217 CgUpdateCdatHeader (AslGbl_CurrentDB);
218 }
219 else
220 {
221 CgUpdateHeader (AslGbl_CurrentDB);
222 }
223 }
224
225
226 /*******************************************************************************
227 *
228 * FUNCTION: CgAmlWriteWalk
229 *
230 * PARAMETERS: ASL_WALK_CALLBACK
231 *
232 * RETURN: Status
233 *
234 * DESCRIPTION: Parse tree walk to generate the AML code.
235 *
236 ******************************************************************************/
237
238 static ACPI_STATUS
CgAmlWriteWalk(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)239 CgAmlWriteWalk (
240 ACPI_PARSE_OBJECT *Op,
241 UINT32 Level,
242 void *Context)
243 {
244
245 /* Generate the AML for this node */
246
247 CgWriteNode (Op);
248
249 if (!AslGbl_DebugFlag)
250 {
251 return (AE_OK);
252 }
253
254 /* Print header at level 0. Alignment assumes 32-bit pointers */
255
256 if (!Level)
257 {
258 DbgPrint (ASL_TREE_OUTPUT,
259 "\nFinal parse tree used for AML output:\n");
260 DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_HEADER2);
261 }
262
263 /* Dump ParseOp name and possible value */
264
265 switch (Op->Asl.ParseOpcode)
266 {
267 case PARSEOP_NAMESEG:
268 case PARSEOP_NAMESTRING:
269 case PARSEOP_METHODCALL:
270 case PARSEOP_STRING_LITERAL:
271
272 UtDumpStringOp (Op, Level);
273 break;
274
275 default:
276
277 UtDumpBasicOp (Op, Level);
278 break;
279 }
280
281 DbgPrint (ASL_TREE_OUTPUT, ASL_PARSE_TREE_DEBUG2,
282 /* 1 */ (UINT32) Op->Asl.Value.Integer,
283 /* 2 */ Op->Asl.ParseOpcode,
284 /* 3 */ Op->Asl.AmlOpcode,
285 /* 4 */ Op->Asl.AmlOpcodeLength,
286 /* 5 */ Op->Asl.AmlPkgLenBytes,
287 /* 6 */ Op->Asl.AmlLength,
288 /* 7 */ Op->Asl.AmlSubtreeLength,
289 /* 8 */ Op->Asl.Parent ? Op->Asl.Parent->Asl.AmlSubtreeLength : 0,
290 /* 9 */ Op,
291 /* 10 */ Op->Asl.Parent,
292 /* 11 */ Op->Asl.Child,
293 /* 12 */ Op->Asl.Next,
294 /* 13 */ Op->Asl.CompileFlags,
295 /* 14 */ Op->Asl.AcpiBtype,
296 /* 15 */ Op->Asl.FinalAmlLength,
297 /* 16 */ Op->Asl.Column,
298 /* 17 */ Op->Asl.LineNumber,
299 /* 18 */ Op->Asl.EndLine,
300 /* 19 */ Op->Asl.LogicalLineNumber,
301 /* 20 */ Op->Asl.EndLogicalLine);
302
303 TrPrintOpFlags (Op->Asl.CompileFlags, ASL_TREE_OUTPUT);
304 DbgPrint (ASL_TREE_OUTPUT, "\n");
305 return (AE_OK);
306 }
307
308
309 /*******************************************************************************
310 *
311 * FUNCTION: CgLocalWriteAmlData
312 *
313 * PARAMETERS: Op - Current parse op
314 * Buffer - Buffer to write
315 * Length - Size of data in buffer
316 *
317 * RETURN: None
318 *
319 * DESCRIPTION: Write a buffer of AML data to the AML output file.
320 *
321 ******************************************************************************/
322
323 void
CgLocalWriteAmlData(ACPI_PARSE_OBJECT * Op,void * Buffer,UINT32 Length)324 CgLocalWriteAmlData (
325 ACPI_PARSE_OBJECT *Op,
326 void *Buffer,
327 UINT32 Length)
328 {
329
330 /* Write the raw data to the AML file */
331
332 FlWriteFile (ASL_FILE_AML_OUTPUT, Buffer, Length);
333
334 /* Update the final AML length for this node (used for listings) */
335
336 if (Op)
337 {
338 Op->Asl.FinalAmlLength += Length;
339 }
340 }
341
342
343 /*******************************************************************************
344 *
345 * FUNCTION: CgWriteAmlOpcode
346 *
347 * PARAMETERS: Op - Parse node with an AML opcode
348 *
349 * RETURN: None.
350 *
351 * DESCRIPTION: Write the AML opcode corresponding to a parse node.
352 *
353 ******************************************************************************/
354
355 static void
CgWriteAmlOpcode(ACPI_PARSE_OBJECT * Op)356 CgWriteAmlOpcode (
357 ACPI_PARSE_OBJECT *Op)
358 {
359 UINT8 PkgLenFirstByte;
360 UINT32 i;
361 union {
362 UINT16 Opcode;
363 UINT8 OpcodeBytes[2];
364 } Aml;
365 union {
366 UINT32 Len;
367 UINT8 LenBytes[4];
368 } PkgLen;
369
370
371 /* We expect some DEFAULT_ARGs, just ignore them */
372
373 if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
374 {
375 return;
376 }
377
378 /*
379 * Before printing the bytecode, generate comment byte codes
380 * associated with this node.
381 */
382 if (AcpiGbl_CaptureComments)
383 {
384 CgWriteAmlComment(Op);
385 }
386
387 switch (Op->Asl.AmlOpcode)
388 {
389 case AML_UNASSIGNED_OPCODE:
390
391 /* These opcodes should not get here */
392
393 printf ("Found a node with an unassigned AML opcode\n");
394 FlPrintFile (ASL_FILE_STDERR,
395 "Found a node with an unassigned AML opcode\n");
396 return;
397
398 case AML_INT_RESERVEDFIELD_OP:
399
400 /* Special opcodes for within a field definition */
401
402 Aml.Opcode = AML_FIELD_OFFSET_OP;
403 break;
404
405 case AML_INT_ACCESSFIELD_OP:
406
407 Aml.Opcode = AML_FIELD_ACCESS_OP;
408 break;
409
410 case AML_INT_CONNECTION_OP:
411
412 Aml.Opcode = AML_FIELD_CONNECTION_OP;
413 break;
414
415 default:
416
417 Aml.Opcode = Op->Asl.AmlOpcode;
418 break;
419 }
420
421
422 switch (Aml.Opcode)
423 {
424 case AML_PACKAGE_LENGTH:
425
426 /* Value is the length to be encoded (Used in field definitions) */
427
428 PkgLen.Len = (UINT32) Op->Asl.Value.Integer;
429 break;
430
431 default:
432
433 /* Check for two-byte opcode */
434
435 if (Aml.Opcode > 0x00FF)
436 {
437 /* Write the high byte first */
438
439 CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[1], 1);
440 }
441
442 CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[0], 1);
443
444 /* Subtreelength doesn't include length of package length bytes */
445
446 PkgLen.Len = Op->Asl.AmlSubtreeLength + Op->Asl.AmlPkgLenBytes;
447 break;
448 }
449
450 /* Does this opcode have an associated "PackageLength" field? */
451
452 if (Op->Asl.CompileFlags & OP_AML_PACKAGE)
453 {
454 if (Op->Asl.AmlPkgLenBytes == 1)
455 {
456 /* Simplest case -- no bytes to follow, just write the count */
457
458 CgLocalWriteAmlData (Op, &PkgLen.LenBytes[0], 1);
459 }
460 else if (Op->Asl.AmlPkgLenBytes != 0)
461 {
462 /*
463 * Encode the "bytes to follow" in the first byte, top two bits.
464 * The low-order nybble of the length is in the bottom 4 bits
465 */
466 PkgLenFirstByte = (UINT8)
467 (((UINT32) (Op->Asl.AmlPkgLenBytes - 1) << 6) |
468 (PkgLen.LenBytes[0] & 0x0F));
469
470 CgLocalWriteAmlData (Op, &PkgLenFirstByte, 1);
471
472 /*
473 * Shift the length over by the 4 bits we just stuffed
474 * in the first byte
475 */
476 PkgLen.Len >>= 4;
477
478 /*
479 * Now we can write the remaining bytes -
480 * either 1, 2, or 3 bytes
481 */
482 for (i = 0; i < (UINT32) (Op->Asl.AmlPkgLenBytes - 1); i++)
483 {
484 CgLocalWriteAmlData (Op, &PkgLen.LenBytes[i], 1);
485 }
486 }
487 }
488
489 switch (Aml.Opcode)
490 {
491 case AML_BYTE_OP:
492
493 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 1);
494 break;
495
496 case AML_WORD_OP:
497
498 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 2);
499 break;
500
501 case AML_DWORD_OP:
502
503 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 4);
504 break;
505
506 case AML_QWORD_OP:
507
508 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 8);
509 break;
510
511 case AML_STRING_OP:
512
513 CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
514 break;
515
516 default:
517
518 /* All data opcodes must appear above */
519
520 break;
521 }
522 }
523
524
525 /*******************************************************************************
526 *
527 * FUNCTION: CgWriteTableHeader
528 *
529 * PARAMETERS: Op - The DEFINITIONBLOCK node
530 *
531 * RETURN: None
532 *
533 * DESCRIPTION: Write a table header corresponding to the DEFINITIONBLOCK
534 *
535 * NOTE: Input strings should be validated before this function is invoked.
536 *
537 ******************************************************************************/
538
539 static void
CgWriteTableHeader(ACPI_PARSE_OBJECT * Op)540 CgWriteTableHeader (
541 ACPI_PARSE_OBJECT *Op)
542 {
543 ACPI_PARSE_OBJECT *Child;
544 UINT32 CommentLength;
545 ACPI_COMMENT_NODE *Current;
546
547
548 memset (&AslGbl_TableHeader, 0, sizeof (ACPI_TABLE_HEADER));
549
550 /* AML filename */
551
552 Child = Op->Asl.Child;
553
554 /* Signature */
555
556 Child = Child->Asl.Next;
557
558 /*
559 * For ASL-/ASL+ converter: replace the table signature with
560 * "XXXX" and save the original table signature. This results in an AML
561 * file with the signature "XXXX". The converter should remove this AML
562 * file. In the event where this AML file does not get deleted, the
563 * "XXXX" table signature prevents this AML file from running on the AML
564 * interpreter.
565 */
566 if (AcpiGbl_CaptureComments)
567 {
568 ACPI_COPY_NAMESEG (AcpiGbl_TableSig, Child->Asl.Value.String);
569 Child->Asl.Value.String = ACPI_SIG_XXXX;
570 }
571
572 ACPI_COPY_NAMESEG (AslGbl_TableHeader.Signature, Child->Asl.Value.String);
573
574 /* Revision */
575
576 Child = Child->Asl.Next;
577 AslGbl_TableHeader.Revision = (UINT8) Child->Asl.Value.Integer;
578
579 /* Command-line Revision override */
580
581 if (AslGbl_RevisionOverride)
582 {
583 AslGbl_TableHeader.Revision = AslGbl_RevisionOverride;
584 }
585
586 /* OEMID */
587
588 Child = Child->Asl.Next;
589 memcpy (AslGbl_TableHeader.OemId, Child->Asl.Value.String,
590 strlen (Child->Asl.Value.String));
591
592 /* OEM TableID */
593
594 Child = Child->Asl.Next;
595 memcpy (AslGbl_TableHeader.OemTableId, Child->Asl.Value.String,
596 strlen (Child->Asl.Value.String));
597
598 /* OEM Revision */
599
600 Child = Child->Asl.Next;
601 AslGbl_TableHeader.OemRevision = (UINT32) Child->Asl.Value.Integer;
602
603 /* Compiler ID */
604
605 ACPI_COPY_NAMESEG (AslGbl_TableHeader.AslCompilerId, ASL_CREATOR_ID);
606
607 /* Compiler version */
608
609 AslGbl_TableHeader.AslCompilerRevision = ACPI_CA_VERSION;
610
611 /* Table length. Checksum zero for now, will rewrite later */
612
613 AslGbl_TableHeader.Length = sizeof (ACPI_TABLE_HEADER) +
614 Op->Asl.AmlSubtreeLength;
615
616 /* Calculate the comment lengths for this definition block parseOp */
617
618 if (AcpiGbl_CaptureComments)
619 {
620 CvDbgPrint ("Calculating comment lengths for %s in write header\n",
621 Op->Asl.ParseOpName);
622
623 /*
624 * Take the filename without extensions, add 3 for the new extension
625 * and another 3 for the a908 bytecode and null terminator.
626 */
627 AslGbl_TableHeader.Length += strrchr (AslGbl_ParseTreeRoot->Asl.Filename, '.')
628 - AslGbl_ParseTreeRoot->Asl.Filename + 1 + 3 + 3;
629
630 Op->Asl.AmlSubtreeLength +=
631 strlen (AslGbl_ParseTreeRoot->Asl.Filename) + 3;
632
633 CvDbgPrint (" Length: %u\n",
634 (UINT32) strlen (AslGbl_ParseTreeRoot->Asl.Filename) + 3);
635
636 if (Op->Asl.CommentList)
637 {
638 Current = Op->Asl.CommentList;
639 while (Current)
640 {
641 CommentLength = strlen (Current->Comment)+3;
642 CvDbgPrint ("Length of standard comment): %d\n", CommentLength);
643 CvDbgPrint (" Comment string: %s\n\n", Current->Comment);
644 AslGbl_TableHeader.Length += CommentLength;
645 Op->Asl.AmlSubtreeLength += CommentLength;
646 Current = Current->Next;
647 CvDbgPrint (" Length: %u\n", CommentLength);
648 }
649 }
650 if (Op->Asl.CloseBraceComment)
651 {
652 CommentLength = strlen (Op->Asl.CloseBraceComment)+3;
653 CvDbgPrint ("Length of inline comment +3: %d\n", CommentLength);
654 CvDbgPrint (" Comment string: %s\n\n", Op->Asl.CloseBraceComment);
655 AslGbl_TableHeader.Length += CommentLength;
656 Op->Asl.AmlSubtreeLength += CommentLength;
657 CvDbgPrint (" Length: %u\n", CommentLength);
658 }
659 }
660
661 AslGbl_TableHeader.Checksum = 0;
662 Op->Asl.FinalAmlOffset = ftell (AslGbl_Files[ASL_FILE_AML_OUTPUT].Handle);
663
664 /* Write entire header and clear the table header global */
665
666 CgLocalWriteAmlData (Op, &AslGbl_TableHeader, sizeof (ACPI_TABLE_HEADER));
667 memset (&AslGbl_TableHeader, 0, sizeof (ACPI_TABLE_HEADER));
668 }
669
670
671 /*******************************************************************************
672 *
673 * FUNCTION: CgUpdateCdatHeader
674 *
675 * PARAMETERS: Op - Op for the Definition Block
676 *
677 * RETURN: None.
678 *
679 * DESCRIPTION: Complete the ACPI table by calculating the checksum and
680 * re-writing the header for the input definition block
681 *
682 ******************************************************************************/
683
684 static void
CgUpdateCdatHeader(ACPI_PARSE_OBJECT * Op)685 CgUpdateCdatHeader (
686 ACPI_PARSE_OBJECT *Op)
687 {
688 signed char Sum;
689 UINT32 i;
690 UINT32 Length;
691 UINT8 FileByte;
692 UINT8 Checksum;
693
694
695 /* Calculate the checksum over the entire definition block */
696
697 Sum = 0;
698 Length = sizeof (ACPI_TABLE_CDAT) + Op->Asl.AmlSubtreeLength;
699 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset);
700
701 for (i = 0; i < Length; i++)
702 {
703 if (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) != AE_OK)
704 {
705 AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, NULL,
706 "Table length is greater than size of the input file");
707 return;
708 }
709
710 Sum = (signed char) (Sum + FileByte);
711 }
712
713 Checksum = (UINT8) (0 - Sum);
714
715 DbgPrint (ASL_DEBUG_OUTPUT, "Computed checksum = %X\n", Checksum);
716
717 /* Re-write the checksum byte */
718
719 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset +
720 ACPI_CDAT_OFFSET (Checksum));
721
722 FlWriteFile (ASL_FILE_AML_OUTPUT, &Checksum, 1);
723
724 /*
725 * Seek to the end of the file. This is done to support multiple file
726 * compilation. Doing this simplifies other parts of the codebase because
727 * it eliminates the need to seek for a different starting place.
728 */
729 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset + Length);
730 }
731
732 /*******************************************************************************
733 *
734 * FUNCTION: CgUpdateHeader
735 *
736 * PARAMETERS: Op - Op for the Definition Block
737 *
738 * RETURN: None.
739 *
740 * DESCRIPTION: Complete the ACPI table by calculating the checksum and
741 * re-writing the header for the input definition block
742 *
743 ******************************************************************************/
744
745 static void
CgUpdateHeader(ACPI_PARSE_OBJECT * Op)746 CgUpdateHeader (
747 ACPI_PARSE_OBJECT *Op)
748 {
749 signed char Sum;
750 UINT32 i;
751 UINT32 Length;
752 UINT8 FileByte;
753 UINT8 Checksum;
754
755
756 /* Calculate the checksum over the entire definition block */
757
758 Sum = 0;
759 Length = sizeof (ACPI_TABLE_HEADER) + Op->Asl.AmlSubtreeLength;
760 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset);
761
762 for (i = 0; i < Length; i++)
763 {
764 if (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) != AE_OK)
765 {
766 AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, NULL,
767 "Table length is greater than size of the input file");
768 return;
769 }
770
771 Sum = (signed char) (Sum + FileByte);
772 }
773
774 Checksum = (UINT8) (0 - Sum);
775
776 /* Re-write the checksum byte */
777
778 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset +
779 ACPI_OFFSET (ACPI_TABLE_HEADER, Checksum));
780
781 FlWriteFile (ASL_FILE_AML_OUTPUT, &Checksum, 1);
782
783 /*
784 * Seek to the end of the file. This is done to support multiple file
785 * compilation. Doing this simplifies other parts of the codebase because
786 * it eliminates the need to seek for a different starting place.
787 */
788 FlSeekFile (ASL_FILE_AML_OUTPUT, Op->Asl.FinalAmlOffset + Length);
789 }
790
791
792 /*******************************************************************************
793 *
794 * FUNCTION: CgWriteNode
795 *
796 * PARAMETERS: Op - Parse node to write.
797 *
798 * RETURN: None.
799 *
800 * DESCRIPTION: Write the AML that corresponds to a parse node.
801 *
802 ******************************************************************************/
803
804 static void
CgWriteNode(ACPI_PARSE_OBJECT * Op)805 CgWriteNode (
806 ACPI_PARSE_OBJECT *Op)
807 {
808 ASL_RESOURCE_NODE *Rnode;
809
810
811 /* Write all comments here. */
812
813 if (AcpiGbl_CaptureComments)
814 {
815 CgWriteAmlComment(Op);
816 }
817
818 /* Always check for DEFAULT_ARG and other "Noop" nodes */
819 /* TBD: this may not be the best place for this check */
820
821 if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) ||
822 (Op->Asl.ParseOpcode == PARSEOP_INCLUDE) ||
823 (Op->Asl.ParseOpcode == PARSEOP_INCLUDE_END))
824 {
825 return;
826 }
827
828 Op->Asl.FinalAmlLength = 0;
829
830 switch (Op->Asl.AmlOpcode)
831 {
832 case AML_RAW_DATA_BYTE:
833 case AML_RAW_DATA_WORD:
834 case AML_RAW_DATA_DWORD:
835 case AML_RAW_DATA_QWORD:
836
837 CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, Op->Asl.AmlLength);
838 return;
839
840
841 case AML_RAW_DATA_BUFFER:
842
843 CgLocalWriteAmlData (Op, Op->Asl.Value.Buffer, Op->Asl.AmlLength);
844 return;
845
846
847 case AML_RAW_DATA_CHAIN:
848
849 Rnode = ACPI_CAST_PTR (ASL_RESOURCE_NODE, Op->Asl.Value.Buffer);
850 while (Rnode)
851 {
852 CgLocalWriteAmlData (Op, Rnode->Buffer, Rnode->BufferLength);
853 Rnode = Rnode->Next;
854 }
855 return;
856
857 default:
858
859 /* Internal data opcodes must all appear above */
860
861 break;
862 }
863
864 switch (Op->Asl.ParseOpcode)
865 {
866 case PARSEOP_DEFAULT_ARG:
867
868 break;
869
870 case PARSEOP_DEFINITION_BLOCK:
871
872 CgWriteTableHeader (Op);
873 if (AcpiGbl_CaptureComments)
874 {
875 CgWriteAmlDefBlockComment (Op);
876 }
877 break;
878
879 case PARSEOP_NAMESEG:
880 case PARSEOP_NAMESTRING:
881 case PARSEOP_METHODCALL:
882
883 CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
884 break;
885
886 default:
887
888 CgWriteAmlOpcode (Op);
889 break;
890 }
891 }
892
