1 /******************************************************************************
2 *
3 * Module Name: aslopcode - AML opcode 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
156 #define _COMPONENT ACPI_COMPILER
157 ACPI_MODULE_NAME ("aslopcodes")
158
159
160 /* Local prototypes */
161
162 static void
163 OpcDoAccessAs (
164 ACPI_PARSE_OBJECT *Op);
165
166 static void
167 OpcDoConnection (
168 ACPI_PARSE_OBJECT *Op);
169
170 static void
171 OpcDoUnicode (
172 ACPI_PARSE_OBJECT *Op);
173
174 static void
175 OpcDoEisaId (
176 ACPI_PARSE_OBJECT *Op);
177
178 static void
179 OpcDoUuId (
180 ACPI_PARSE_OBJECT *Op);
181
182
183 /*******************************************************************************
184 *
185 * FUNCTION: OpcAmlOpcodeUpdateWalk
186 *
187 * PARAMETERS: ASL_WALK_CALLBACK
188 *
189 * RETURN: Status
190 *
191 * DESCRIPTION: Opcode update walk, ascending callback
192 *
193 ******************************************************************************/
194
195 ACPI_STATUS
OpcAmlOpcodeUpdateWalk(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)196 OpcAmlOpcodeUpdateWalk (
197 ACPI_PARSE_OBJECT *Op,
198 UINT32 Level,
199 void *Context)
200 {
201
202 /*
203 * Handle the Package() case where the actual opcode cannot be determined
204 * until the PackageLength operand has been folded and minimized.
205 * (PackageOp versus VarPackageOp)
206 *
207 * This is (as of ACPI 3.0) the only case where the AML opcode can change
208 * based upon the value of a parameter.
209 *
210 * The parser always inserts a VarPackage opcode, which can possibly be
211 * optimized to a Package opcode.
212 */
213 if (Op->Asl.ParseOpcode == PARSEOP_VAR_PACKAGE)
214 {
215 OpnDoPackage (Op);
216 }
217
218 return (AE_OK);
219 }
220
221
222 /*******************************************************************************
223 *
224 * FUNCTION: OpcAmlOpcodeWalk
225 *
226 * PARAMETERS: ASL_WALK_CALLBACK
227 *
228 * RETURN: Status
229 *
230 * DESCRIPTION: Parse tree walk to generate both the AML opcodes and the AML
231 * operands.
232 *
233 ******************************************************************************/
234
235 ACPI_STATUS
OpcAmlOpcodeWalk(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)236 OpcAmlOpcodeWalk (
237 ACPI_PARSE_OBJECT *Op,
238 UINT32 Level,
239 void *Context)
240 {
241
242 TotalParseNodes++;
243
244 OpcGenerateAmlOpcode (Op);
245 OpnGenerateAmlOperands (Op);
246 return (AE_OK);
247 }
248
249
250 /*******************************************************************************
251 *
252 * FUNCTION: OpcGetIntegerWidth
253 *
254 * PARAMETERS: Op - DEFINITION BLOCK op
255 *
256 * RETURN: none
257 *
258 * DESCRIPTION: Extract integer width from the table revision
259 *
260 ******************************************************************************/
261
262 void
OpcGetIntegerWidth(ACPI_PARSE_OBJECT * Op)263 OpcGetIntegerWidth (
264 ACPI_PARSE_OBJECT *Op)
265 {
266 ACPI_PARSE_OBJECT *Child;
267
268
269 if (!Op)
270 {
271 return;
272 }
273
274 if (Gbl_RevisionOverride)
275 {
276 AcpiUtSetIntegerWidth (Gbl_RevisionOverride);
277 }
278 else
279 {
280 Child = Op->Asl.Child;
281 Child = Child->Asl.Next;
282 Child = Child->Asl.Next;
283
284 /* Use the revision to set the integer width */
285
286 AcpiUtSetIntegerWidth ((UINT8) Child->Asl.Value.Integer);
287 }
288 }
289
290
291 /*******************************************************************************
292 *
293 * FUNCTION: OpcSetOptimalIntegerSize
294 *
295 * PARAMETERS: Op - A parse tree node
296 *
297 * RETURN: Integer width, in bytes. Also sets the node AML opcode to the
298 * optimal integer AML prefix opcode.
299 *
300 * DESCRIPTION: Determine the optimal AML encoding of an integer. All leading
301 * zeros can be truncated to squeeze the integer into the
302 * minimal number of AML bytes.
303 *
304 ******************************************************************************/
305
306 UINT32
OpcSetOptimalIntegerSize(ACPI_PARSE_OBJECT * Op)307 OpcSetOptimalIntegerSize (
308 ACPI_PARSE_OBJECT *Op)
309 {
310
311 #if 0
312 /*
313 * TBD: - we don't want to optimize integers in the block header, but the
314 * code below does not work correctly.
315 */
316 if (Op->Asl.Parent &&
317 Op->Asl.Parent->Asl.Parent &&
318 (Op->Asl.Parent->Asl.Parent->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK))
319 {
320 return (0);
321 }
322 #endif
323
324 /*
325 * Check for the special AML integers first - Zero, One, Ones.
326 * These are single-byte opcodes that are the smallest possible
327 * representation of an integer.
328 *
329 * This optimization is optional.
330 */
331 if (Gbl_IntegerOptimizationFlag)
332 {
333 switch (Op->Asl.Value.Integer)
334 {
335 case 0:
336
337 Op->Asl.AmlOpcode = AML_ZERO_OP;
338 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
339 Op, "Zero");
340 return (1);
341
342 case 1:
343
344 Op->Asl.AmlOpcode = AML_ONE_OP;
345 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
346 Op, "One");
347 return (1);
348
349 case ACPI_UINT32_MAX:
350
351 /* Check for table integer width (32 or 64) */
352
353 if (AcpiGbl_IntegerByteWidth == 4)
354 {
355 Op->Asl.AmlOpcode = AML_ONES_OP;
356 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
357 Op, "Ones");
358 return (1);
359 }
360 break;
361
362 case ACPI_UINT64_MAX:
363
364 /* Check for table integer width (32 or 64) */
365
366 if (AcpiGbl_IntegerByteWidth == 8)
367 {
368 Op->Asl.AmlOpcode = AML_ONES_OP;
369 AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
370 Op, "Ones");
371 return (1);
372 }
373 break;
374
375 default:
376
377 break;
378 }
379 }
380
381 /* Find the best fit using the various AML integer prefixes */
382
383 if (Op->Asl.Value.Integer <= ACPI_UINT8_MAX)
384 {
385 Op->Asl.AmlOpcode = AML_BYTE_OP;
386 return (1);
387 }
388
389 if (Op->Asl.Value.Integer <= ACPI_UINT16_MAX)
390 {
391 Op->Asl.AmlOpcode = AML_WORD_OP;
392 return (2);
393 }
394
395 if (Op->Asl.Value.Integer <= ACPI_UINT32_MAX)
396 {
397 Op->Asl.AmlOpcode = AML_DWORD_OP;
398 return (4);
399 }
400 else /* 64-bit integer */
401 {
402 if (AcpiGbl_IntegerByteWidth == 4)
403 {
404 AslError (ASL_WARNING, ASL_MSG_INTEGER_LENGTH,
405 Op, NULL);
406
407 if (!Gbl_IgnoreErrors)
408 {
409 /* Truncate the integer to 32-bit */
410
411 Op->Asl.Value.Integer &= ACPI_UINT32_MAX;
412
413 /* Now set the optimal integer size */
414
415 return (OpcSetOptimalIntegerSize (Op));
416 }
417 }
418
419 Op->Asl.AmlOpcode = AML_QWORD_OP;
420 return (8);
421 }
422 }
423
424
425 /*******************************************************************************
426 *
427 * FUNCTION: OpcDoAccessAs
428 *
429 * PARAMETERS: Op - Parse node
430 *
431 * RETURN: None
432 *
433 * DESCRIPTION: Implement the ACCESS_AS ASL keyword.
434 *
435 ******************************************************************************/
436
437 static void
OpcDoAccessAs(ACPI_PARSE_OBJECT * Op)438 OpcDoAccessAs (
439 ACPI_PARSE_OBJECT *Op)
440 {
441 ACPI_PARSE_OBJECT *TypeOp;
442 ACPI_PARSE_OBJECT *AttribOp;
443 ACPI_PARSE_OBJECT *LengthOp;
444 UINT8 Attribute;
445
446
447 Op->Asl.AmlOpcodeLength = 1;
448 TypeOp = Op->Asl.Child;
449
450 /* First child is the access type */
451
452 TypeOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
453 TypeOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
454
455 /* Second child is the optional access attribute */
456
457 AttribOp = TypeOp->Asl.Next;
458 if (AttribOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
459 {
460 AttribOp->Asl.Value.Integer = 0;
461 }
462
463 AttribOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
464 AttribOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
465
466 /* Only a few AccessAttributes support AccessLength */
467
468 Attribute = (UINT8) AttribOp->Asl.Value.Integer;
469 if ((Attribute != AML_FIELD_ATTRIB_MULTIBYTE) &&
470 (Attribute != AML_FIELD_ATTRIB_RAW_BYTES) &&
471 (Attribute != AML_FIELD_ATTRIB_RAW_PROCESS))
472 {
473 return;
474 }
475
476 Op->Asl.AmlOpcode = AML_FIELD_EXT_ACCESS_OP;
477
478 /*
479 * Child of Attributes is the AccessLength (required for Multibyte,
480 * RawBytes, RawProcess.)
481 */
482 LengthOp = AttribOp->Asl.Child;
483 if (!LengthOp)
484 {
485 return;
486 }
487
488 /* TBD: probably can remove */
489
490 if (LengthOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
491 {
492 LengthOp->Asl.Value.Integer = 16;
493 }
494
495 LengthOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
496 LengthOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
497 }
498
499
500 /*******************************************************************************
501 *
502 * FUNCTION: OpcDoConnection
503 *
504 * PARAMETERS: Op - Parse node
505 *
506 * RETURN: None
507 *
508 * DESCRIPTION: Implement the Connection ASL keyword.
509 *
510 ******************************************************************************/
511
512 static void
OpcDoConnection(ACPI_PARSE_OBJECT * Op)513 OpcDoConnection (
514 ACPI_PARSE_OBJECT *Op)
515 {
516 ASL_RESOURCE_NODE *Rnode;
517 ACPI_PARSE_OBJECT *BufferOp;
518 ACPI_PARSE_OBJECT *BufferLengthOp;
519 ACPI_PARSE_OBJECT *BufferDataOp;
520 ASL_RESOURCE_INFO Info;
521 UINT8 State;
522
523
524 Op->Asl.AmlOpcodeLength = 1;
525
526 if (Op->Asl.Child->Asl.AmlOpcode == AML_INT_NAMEPATH_OP)
527 {
528 return;
529 }
530
531 BufferOp = Op->Asl.Child;
532 BufferLengthOp = BufferOp->Asl.Child;
533 BufferDataOp = BufferLengthOp->Asl.Next;
534
535 Info.DescriptorTypeOp = BufferDataOp->Asl.Next;
536 Info.CurrentByteOffset = 0;
537 State = ACPI_RSTATE_NORMAL;
538 Rnode = RsDoOneResourceDescriptor (&Info, &State);
539 if (!Rnode)
540 {
541 return; /* error */
542 }
543
544 /*
545 * Transform the nodes into the following
546 *
547 * Op -> AML_BUFFER_OP
548 * First Child -> BufferLength
549 * Second Child -> Descriptor Buffer (raw byte data)
550 */
551 BufferOp->Asl.ParseOpcode = PARSEOP_BUFFER;
552 BufferOp->Asl.AmlOpcode = AML_BUFFER_OP;
553 BufferOp->Asl.CompileFlags = OP_AML_PACKAGE | OP_IS_RESOURCE_DESC;
554 UtSetParseOpName (BufferOp);
555
556 BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER;
557 BufferLengthOp->Asl.Value.Integer = Rnode->BufferLength;
558 (void) OpcSetOptimalIntegerSize (BufferLengthOp);
559 UtSetParseOpName (BufferLengthOp);
560
561 BufferDataOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
562 BufferDataOp->Asl.AmlOpcode = AML_RAW_DATA_CHAIN;
563 BufferDataOp->Asl.AmlOpcodeLength = 0;
564 BufferDataOp->Asl.AmlLength = Rnode->BufferLength;
565 BufferDataOp->Asl.Value.Buffer = (UINT8 *) Rnode;
566 UtSetParseOpName (BufferDataOp);
567 }
568
569
570 /*******************************************************************************
571 *
572 * FUNCTION: OpcDoUnicode
573 *
574 * PARAMETERS: Op - Parse node
575 *
576 * RETURN: None
577 *
578 * DESCRIPTION: Implement the UNICODE ASL "macro". Convert the input string
579 * to a unicode buffer. There is no Unicode AML opcode.
580 *
581 * Note: The Unicode string is 16 bits per character, no leading signature,
582 * with a 16-bit terminating NULL.
583 *
584 ******************************************************************************/
585
586 static void
OpcDoUnicode(ACPI_PARSE_OBJECT * Op)587 OpcDoUnicode (
588 ACPI_PARSE_OBJECT *Op)
589 {
590 ACPI_PARSE_OBJECT *InitializerOp;
591 UINT32 Length;
592 UINT32 Count;
593 UINT32 i;
594 UINT8 *AsciiString;
595 UINT16 *UnicodeString;
596 ACPI_PARSE_OBJECT *BufferLengthOp;
597
598
599 /* Change op into a buffer object */
600
601 Op->Asl.CompileFlags &= ~OP_COMPILE_TIME_CONST;
602 Op->Asl.ParseOpcode = PARSEOP_BUFFER;
603 UtSetParseOpName (Op);
604
605 /* Buffer Length is first, followed by the string */
606
607 BufferLengthOp = Op->Asl.Child;
608 InitializerOp = BufferLengthOp->Asl.Next;
609
610 AsciiString = (UINT8 *) InitializerOp->Asl.Value.String;
611
612 /* Create a new buffer for the Unicode string */
613
614 Count = strlen (InitializerOp->Asl.Value.String) + 1;
615 Length = Count * sizeof (UINT16);
616 UnicodeString = UtLocalCalloc (Length);
617
618 /* Convert to Unicode string (including null terminator) */
619
620 for (i = 0; i < Count; i++)
621 {
622 UnicodeString[i] = (UINT16) AsciiString[i];
623 }
624
625 /*
626 * Just set the buffer size node to be the buffer length, regardless
627 * of whether it was previously an integer or a default_arg placeholder
628 */
629 BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER;
630 BufferLengthOp->Asl.AmlOpcode = AML_DWORD_OP;
631 BufferLengthOp->Asl.Value.Integer = Length;
632 UtSetParseOpName (BufferLengthOp);
633
634 (void) OpcSetOptimalIntegerSize (BufferLengthOp);
635
636 /* The Unicode string is a raw data buffer */
637
638 InitializerOp->Asl.Value.Buffer = (UINT8 *) UnicodeString;
639 InitializerOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER;
640 InitializerOp->Asl.AmlLength = Length;
641 InitializerOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
642 InitializerOp->Asl.Child = NULL;
643 UtSetParseOpName (InitializerOp);
644 }
645
646
647 /*******************************************************************************
648 *
649 * FUNCTION: OpcDoEisaId
650 *
651 * PARAMETERS: Op - Parse node
652 *
653 * RETURN: None
654 *
655 * DESCRIPTION: Convert a string EISA ID to numeric representation. See the
656 * Pnp BIOS Specification for details. Here is an excerpt:
657 *
658 * A seven character ASCII representation of the product
659 * identifier compressed into a 32-bit identifier. The seven
660 * character ID consists of a three character manufacturer code,
661 * a three character hexadecimal product identifier, and a one
662 * character hexadecimal revision number. The manufacturer code
663 * is a 3 uppercase character code that is compressed into 3 5-bit
664 * values as follows:
665 * 1) Find hex ASCII value for each letter
666 * 2) Subtract 40h from each ASCII value
667 * 3) Retain 5 least significant bits for each letter by
668 * discarding upper 3 bits because they are always 0.
669 * 4) Compressed code = concatenate 0 and the 3 5-bit values
670 *
671 * The format of the compressed product identifier is as follows:
672 * Byte 0: Bit 7 - Reserved (0)
673 * Bits 6-2: - 1st character of compressed mfg code
674 * Bits 1-0 - Upper 2 bits of 2nd character of mfg code
675 * Byte 1: Bits 7-5 - Lower 3 bits of 2nd character of mfg code
676 * Bits 4-0 - 3rd character of mfg code
677 * Byte 2: Bits 7-4 - 1st hex digit of product number
678 * Bits 3-0 - 2nd hex digit of product number
679 * Byte 3: Bits 7-4 - 3st hex digit of product number
680 * Bits 3-0 - Hex digit of the revision number
681 *
682 ******************************************************************************/
683
684 static void
OpcDoEisaId(ACPI_PARSE_OBJECT * Op)685 OpcDoEisaId (
686 ACPI_PARSE_OBJECT *Op)
687 {
688 UINT32 EisaId = 0;
689 UINT32 BigEndianId;
690 char *InString;
691 ACPI_STATUS Status = AE_OK;
692 UINT32 i;
693
694
695 InString = (char *) Op->Asl.Value.String;
696
697 /*
698 * The EISAID string must be exactly 7 characters and of the form
699 * "UUUXXXX" -- 3 uppercase letters and 4 hex digits (e.g., "PNP0001")
700 */
701 if (strlen (InString) != 7)
702 {
703 Status = AE_BAD_PARAMETER;
704 }
705 else
706 {
707 /* Check all 7 characters for correct format */
708
709 for (i = 0; i < 7; i++)
710 {
711 /* First 3 characters must be uppercase letters */
712
713 if (i < 3)
714 {
715 if (!isupper ((int) InString[i]))
716 {
717 Status = AE_BAD_PARAMETER;
718 }
719 }
720
721 /* Last 4 characters must be hex digits */
722
723 else if (!isxdigit ((int) InString[i]))
724 {
725 Status = AE_BAD_PARAMETER;
726 }
727 }
728 }
729
730 if (ACPI_FAILURE (Status))
731 {
732 AslError (ASL_ERROR, ASL_MSG_INVALID_EISAID, Op, Op->Asl.Value.String);
733 }
734 else
735 {
736 /* Create ID big-endian first (bits are contiguous) */
737
738 BigEndianId =
739 (UINT32) ((UINT8) (InString[0] - 0x40)) << 26 |
740 (UINT32) ((UINT8) (InString[1] - 0x40)) << 21 |
741 (UINT32) ((UINT8) (InString[2] - 0x40)) << 16 |
742
743 (AcpiUtAsciiCharToHex (InString[3])) << 12 |
744 (AcpiUtAsciiCharToHex (InString[4])) << 8 |
745 (AcpiUtAsciiCharToHex (InString[5])) << 4 |
746 AcpiUtAsciiCharToHex (InString[6]);
747
748 /* Swap to little-endian to get final ID (see function header) */
749
750 EisaId = AcpiUtDwordByteSwap (BigEndianId);
751 }
752
753 /*
754 * Morph the Op into an integer, regardless of whether there
755 * was an error in the EISAID string
756 */
757 Op->Asl.Value.Integer = EisaId;
758
759 Op->Asl.CompileFlags &= ~OP_COMPILE_TIME_CONST;
760 Op->Asl.ParseOpcode = PARSEOP_INTEGER;
761 (void) OpcSetOptimalIntegerSize (Op);
762
763 /* Op is now an integer */
764
765 UtSetParseOpName (Op);
766 }
767
768
769 /*******************************************************************************
770 *
771 * FUNCTION: OpcDoUuId
772 *
773 * PARAMETERS: Op - Parse node
774 *
775 * RETURN: None
776 *
777 * DESCRIPTION: Convert UUID string to 16-byte buffer
778 *
779 ******************************************************************************/
780
781 static void
OpcDoUuId(ACPI_PARSE_OBJECT * Op)782 OpcDoUuId (
783 ACPI_PARSE_OBJECT *Op)
784 {
785 char *InString;
786 UINT8 *Buffer;
787 ACPI_STATUS Status = AE_OK;
788 ACPI_PARSE_OBJECT *NewOp;
789
790
791 InString = ACPI_CAST_PTR (char, Op->Asl.Value.String);
792 Buffer = UtLocalCalloc (16);
793
794 Status = AuValidateUuid (InString);
795 if (ACPI_FAILURE (Status))
796 {
797 AslError (ASL_ERROR, ASL_MSG_INVALID_UUID, Op, Op->Asl.Value.String);
798 }
799 else
800 {
801 AcpiUtConvertStringToUuid (InString, Buffer);
802 }
803
804 /* Change Op to a Buffer */
805
806 Op->Asl.ParseOpcode = PARSEOP_BUFFER;
807 Op->Common.AmlOpcode = AML_BUFFER_OP;
808
809 /* Disable further optimization */
810
811 Op->Asl.CompileFlags &= ~OP_COMPILE_TIME_CONST;
812 UtSetParseOpName (Op);
813
814 /* Child node is the buffer length */
815
816 NewOp = TrAllocateOp (PARSEOP_INTEGER);
817
818 NewOp->Asl.AmlOpcode = AML_BYTE_OP;
819 NewOp->Asl.Value.Integer = 16;
820 NewOp->Asl.Parent = Op;
821
822 Op->Asl.Child = NewOp;
823 Op = NewOp;
824
825 /* Peer to the child is the raw buffer data */
826
827 NewOp = TrAllocateOp (PARSEOP_RAW_DATA);
828 NewOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER;
829 NewOp->Asl.AmlLength = 16;
830 NewOp->Asl.Value.String = ACPI_CAST_PTR (char, Buffer);
831 NewOp->Asl.Parent = Op->Asl.Parent;
832
833 Op->Asl.Next = NewOp;
834 }
835
836
837 /*******************************************************************************
838 *
839 * FUNCTION: OpcGenerateAmlOpcode
840 *
841 * PARAMETERS: Op - Parse node
842 *
843 * RETURN: None
844 *
845 * DESCRIPTION: Generate the AML opcode associated with the node and its
846 * parse (lex/flex) keyword opcode. Essentially implements
847 * a mapping between the parse opcodes and the actual AML opcodes.
848 *
849 ******************************************************************************/
850
851 void
OpcGenerateAmlOpcode(ACPI_PARSE_OBJECT * Op)852 OpcGenerateAmlOpcode (
853 ACPI_PARSE_OBJECT *Op)
854 {
855 UINT16 Index;
856
857
858 Index = (UINT16) (Op->Asl.ParseOpcode - ASL_PARSE_OPCODE_BASE);
859
860 Op->Asl.AmlOpcode = AslKeywordMapping[Index].AmlOpcode;
861 Op->Asl.AcpiBtype = AslKeywordMapping[Index].AcpiBtype;
862 Op->Asl.CompileFlags |= AslKeywordMapping[Index].Flags;
863
864 if (!Op->Asl.Value.Integer)
865 {
866 Op->Asl.Value.Integer = AslKeywordMapping[Index].Value;
867 }
868
869 /* Special handling for some opcodes */
870
871 switch (Op->Asl.ParseOpcode)
872 {
873 case PARSEOP_INTEGER:
874 /*
875 * Set the opcode based on the size of the integer
876 */
877 (void) OpcSetOptimalIntegerSize (Op);
878 break;
879
880 case PARSEOP_OFFSET:
881
882 Op->Asl.AmlOpcodeLength = 1;
883 break;
884
885 case PARSEOP_ACCESSAS:
886
887 OpcDoAccessAs (Op);
888 break;
889
890 case PARSEOP_CONNECTION:
891
892 OpcDoConnection (Op);
893 break;
894
895 case PARSEOP_EISAID:
896
897 OpcDoEisaId (Op);
898 break;
899
900 case PARSEOP_PRINTF:
901
902 OpcDoPrintf (Op);
903 break;
904
905 case PARSEOP_FPRINTF:
906
907 OpcDoFprintf (Op);
908 break;
909
910 case PARSEOP_TOPLD:
911
912 OpcDoPld (Op);
913 break;
914
915 case PARSEOP_TOUUID:
916
917 OpcDoUuId (Op);
918 break;
919
920 case PARSEOP_UNICODE:
921
922 OpcDoUnicode (Op);
923 break;
924
925 case PARSEOP_INCLUDE:
926
927 Gbl_HasIncludeFiles = TRUE;
928 break;
929
930 case PARSEOP_EXTERNAL:
931
932 if (Gbl_DoExternals == FALSE)
933 {
934 Op->Asl.Child->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
935 Op->Asl.Child->Asl.Next->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
936 }
937 break;
938
939 case PARSEOP_TIMER:
940
941 if (AcpiGbl_IntegerBitWidth == 32)
942 {
943 AslError (ASL_REMARK, ASL_MSG_TRUNCATION, Op, NULL);
944 }
945 break;
946
947 default:
948
949 /* Nothing to do for other opcodes */
950
951 break;
952 }
953
954 return;
955 }
956