1 /******************************************************************************
2 *
3 * Module Name: aslexternal - ASL External opcode compiler support
4 *
5 *****************************************************************************/
6
7 /******************************************************************************
8 *
9 * 1. Copyright Notice
10 *
11 * Some or all of this work - Copyright (c) 1999 - 2020, 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 <contrib/dev/acpica/compiler/aslcompiler.h>
153 #include "aslcompiler.y.h"
154 #include <contrib/dev/acpica/include/acparser.h>
155 #include <contrib/dev/acpica/include/amlcode.h>
156 #include <contrib/dev/acpica/include/acnamesp.h>
157
158
159 #define _COMPONENT ACPI_COMPILER
160 ACPI_MODULE_NAME ("aslexternal")
161
162
163 /* Local prototypes */
164
165 static void
166 ExInsertArgCount (
167 ACPI_PARSE_OBJECT *Op);
168
169 static void
170 ExMoveExternals (
171 ACPI_PARSE_OBJECT *DefinitionBlockOp);
172
173
174 /*******************************************************************************
175 *
176 * FUNCTION: ExDoExternal
177 *
178 * PARAMETERS: Op - Current Parse node
179 *
180 * RETURN: None
181 *
182 * DESCRIPTION: Add an External() definition to the global list. This list
183 * is used to generate External opcodes.
184 *
185 ******************************************************************************/
186
187 void
ExDoExternal(ACPI_PARSE_OBJECT * Op)188 ExDoExternal (
189 ACPI_PARSE_OBJECT *Op)
190 {
191 ACPI_PARSE_OBJECT *ListOp;
192 ACPI_PARSE_OBJECT *Prev;
193 ACPI_PARSE_OBJECT *Next;
194 ACPI_PARSE_OBJECT *ArgCountOp;
195 ACPI_PARSE_OBJECT *TypeOp;
196 ACPI_PARSE_OBJECT *ExternTypeOp = Op->Asl.Child->Asl.Next;
197 UINT32 ExternType;
198 UINT8 ParamCount = ASL_EXTERNAL_METHOD_UNKNOWN_PARAMS;
199 UINT32 ParamTypes[ACPI_METHOD_NUM_ARGS];
200
201
202 ExternType = AnMapObjTypeToBtype (ExternTypeOp);
203
204 /*
205 * The parser allows optional parameter return types regardless of the
206 * type. Check object type keyword emit error if optional parameter/return
207 * types exist.
208 *
209 * Check the parameter return type
210 */
211 TypeOp = ExternTypeOp->Asl.Next;
212 if (TypeOp->Asl.Child)
213 {
214 /* Ignore the return type for now. */
215
216 (void) MtProcessTypeOp (TypeOp->Asl.Child);
217 if (ExternType != ACPI_BTYPE_METHOD)
218 {
219 sprintf (AslGbl_MsgBuffer, "Found type [%s]", AcpiUtGetTypeName(ExternType));
220 AslError (ASL_ERROR, ASL_MSG_EXTERN_INVALID_RET_TYPE, TypeOp,
221 AslGbl_MsgBuffer);
222 }
223 }
224
225 /* Check the parameter types */
226
227 TypeOp = TypeOp->Asl.Next;
228 if (TypeOp->Asl.Child)
229 {
230 ParamCount = MtProcessParameterTypeList (TypeOp->Asl.Child, ParamTypes);
231 if (ExternType != ACPI_BTYPE_METHOD)
232 {
233 sprintf (AslGbl_MsgBuffer, "Found type [%s]", AcpiUtGetTypeName(ExternType));
234 AslError (ASL_ERROR, ASL_MSG_EXTERN_INVALID_PARAM_TYPE, TypeOp,
235 AslGbl_MsgBuffer);
236 }
237 }
238
239 ArgCountOp = Op->Asl.Child->Asl.Next->Asl.Next;
240 ArgCountOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
241 ArgCountOp->Asl.ParseOpcode = PARSEOP_BYTECONST;
242 ArgCountOp->Asl.Value.Integer = ParamCount;
243 UtSetParseOpName (ArgCountOp);
244
245 /* Create new list node of arbitrary type */
246
247 ListOp = TrAllocateOp (PARSEOP_DEFAULT_ARG);
248
249 /* Store External node as child */
250
251 ListOp->Asl.Child = Op;
252 ListOp->Asl.Next = NULL;
253
254 if (AslGbl_ExternalsListHead)
255 {
256 /* Link new External to end of list */
257
258 Prev = AslGbl_ExternalsListHead;
259 Next = Prev;
260 while (Next)
261 {
262 Prev = Next;
263 Next = Next->Asl.Next;
264 }
265
266 Prev->Asl.Next = ListOp;
267 }
268 else
269 {
270 AslGbl_ExternalsListHead = ListOp;
271 }
272 }
273
274
275 /*******************************************************************************
276 *
277 * FUNCTION: ExInsertArgCount
278 *
279 * PARAMETERS: Op - Op for a method invocation
280 *
281 * RETURN: None
282 *
283 * DESCRIPTION: Obtain the number of arguments for a control method -- from
284 * the actual invocation.
285 *
286 ******************************************************************************/
287
288 static void
ExInsertArgCount(ACPI_PARSE_OBJECT * Op)289 ExInsertArgCount (
290 ACPI_PARSE_OBJECT *Op)
291 {
292 ACPI_PARSE_OBJECT *Next;
293 ACPI_PARSE_OBJECT *NameOp;
294 ACPI_PARSE_OBJECT *Child;
295 ACPI_PARSE_OBJECT *ArgCountOp;
296 char * ExternalName;
297 char * CallName;
298 UINT16 ArgCount = 0;
299 ACPI_STATUS Status;
300
301
302 CallName = AcpiNsGetNormalizedPathname (Op->Asl.Node, TRUE);
303
304 Next = AslGbl_ExternalsListHead;
305 while (Next)
306 {
307 ArgCount = 0;
308
309 /* Skip if External node already handled */
310
311 if (Next->Asl.Child->Asl.CompileFlags & OP_VISITED)
312 {
313 Next = Next->Asl.Next;
314 continue;
315 }
316
317 NameOp = Next->Asl.Child->Asl.Child;
318 ExternalName = AcpiNsGetNormalizedPathname (NameOp->Asl.Node, TRUE);
319
320 if (strcmp (CallName, ExternalName))
321 {
322 ACPI_FREE (ExternalName);
323 Next = Next->Asl.Next;
324 continue;
325 }
326
327 Next->Asl.Child->Asl.CompileFlags |= OP_VISITED;
328
329 /*
330 * Since we will reposition Externals to the Root, set Namepath
331 * to the fully qualified name and recalculate the aml length
332 */
333 Status = UtInternalizeName (ExternalName,
334 &NameOp->Asl.Value.String);
335
336 ACPI_FREE (ExternalName);
337 if (ACPI_FAILURE (Status))
338 {
339 AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL,
340 NULL, "- Could not Internalize External");
341 break;
342 }
343
344 NameOp->Asl.AmlLength = strlen (NameOp->Asl.Value.String);
345
346 /* Get argument count */
347
348 Child = Op->Asl.Child;
349 while (Child)
350 {
351 ArgCount++;
352 Child = Child->Asl.Next;
353 }
354
355 /* Setup ArgCount operand */
356
357 ArgCountOp = Next->Asl.Child->Asl.Child->Asl.Next->Asl.Next;
358 ArgCountOp->Asl.Value.Integer = ArgCount;
359 break;
360 }
361
362 ACPI_FREE (CallName);
363 }
364
365
366 /*******************************************************************************
367 *
368 * FUNCTION: ExAmlExternalWalkBegin
369 *
370 * PARAMETERS: ASL_WALK_CALLBACK
371 *
372 * RETURN: None
373 *
374 * DESCRIPTION: Parse tree walk to create external opcode list for methods.
375 *
376 ******************************************************************************/
377
378 ACPI_STATUS
ExAmlExternalWalkBegin(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)379 ExAmlExternalWalkBegin (
380 ACPI_PARSE_OBJECT *Op,
381 UINT32 Level,
382 void *Context)
383 {
384
385 /* External list head saved in the definition block op */
386
387 if (Op->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK)
388 {
389 AslGbl_ExternalsListHead = Op->Asl.Value.Arg;
390 }
391
392 if (!AslGbl_ExternalsListHead)
393 {
394 return (AE_OK);
395 }
396
397 if (Op->Asl.ParseOpcode != PARSEOP_METHODCALL)
398 {
399 return (AE_OK);
400 }
401
402 /*
403 * The NameOp child under an ExternalOp gets turned into PARSE_METHODCALL
404 * by XfNamespaceLocateBegin(). Ignore these.
405 */
406 if (Op->Asl.Parent &&
407 Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_EXTERNAL)
408 {
409 return (AE_OK);
410 }
411
412 ExInsertArgCount (Op);
413 return (AE_OK);
414 }
415
416
417 /*******************************************************************************
418 *
419 * FUNCTION: ExAmlExternalWalkEnd
420 *
421 * PARAMETERS: ASL_WALK_CALLBACK
422 *
423 * RETURN: None
424 *
425 * DESCRIPTION: Parse tree walk to create external opcode list for methods.
426 * Here, we just want to catch the case where a definition block
427 * has been completed. Then we move all of the externals into
428 * a single block in the parse tree and thus the AML code.
429 *
430 ******************************************************************************/
431
432 ACPI_STATUS
ExAmlExternalWalkEnd(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)433 ExAmlExternalWalkEnd (
434 ACPI_PARSE_OBJECT *Op,
435 UINT32 Level,
436 void *Context)
437 {
438
439 if (Op->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK)
440 {
441 /*
442 * Process any existing external list. (Support for
443 * multiple definition blocks in a single file/compile)
444 */
445 ExMoveExternals (Op);
446 AslGbl_ExternalsListHead = NULL;
447 }
448
449 return (AE_OK);
450 }
451
452
453 /*******************************************************************************
454 *
455 * FUNCTION: ExMoveExternals
456 *
457 * PARAMETERS: DefinitionBlockOp - Op for current definition block
458 *
459 * RETURN: None
460 *
461 * DESCRIPTION: Move all externals present in the source file into a single
462 * block of AML code, surrounded by an "If (0)" to prevent
463 * AML interpreters from attempting to execute the External
464 * opcodes.
465 *
466 ******************************************************************************/
467
468 static void
ExMoveExternals(ACPI_PARSE_OBJECT * DefinitionBlockOp)469 ExMoveExternals (
470 ACPI_PARSE_OBJECT *DefinitionBlockOp)
471 {
472 ACPI_PARSE_OBJECT *ParentOp;
473 ACPI_PARSE_OBJECT *ExternalOp;
474 ACPI_PARSE_OBJECT *PredicateOp;
475 ACPI_PARSE_OBJECT *NextOp;
476 ACPI_PARSE_OBJECT *Prev;
477 ACPI_PARSE_OBJECT *Next;
478 char *ExternalName;
479 ACPI_OBJECT_TYPE ObjType;
480 ACPI_STATUS Status;
481 UINT32 i;
482
483
484 if (!AslGbl_ExternalsListHead)
485 {
486 return;
487 }
488
489 /* Remove the External nodes from the tree */
490
491 NextOp = AslGbl_ExternalsListHead;
492 while (NextOp)
493 {
494 /*
495 * The External is stored in child pointer of each node in the
496 * list
497 */
498 ExternalOp = NextOp->Asl.Child;
499
500 /* Get/set the fully qualified name */
501
502 ExternalName = AcpiNsGetNormalizedPathname (ExternalOp->Asl.Node, TRUE);
503 ExternalOp->Asl.ExternalName = ExternalName;
504 ExternalOp->Asl.Namepath = ExternalName;
505
506 /* Set line numbers (for listings, etc.) */
507
508 ExternalOp->Asl.LineNumber = 0;
509 ExternalOp->Asl.LogicalLineNumber = 0;
510
511 Next = ExternalOp->Asl.Child;
512 Next->Asl.LineNumber = 0;
513 Next->Asl.LogicalLineNumber = 0;
514
515 if (Next->Asl.ParseOpcode == PARSEOP_NAMESEG)
516 {
517 Next->Asl.ParseOpcode = PARSEOP_NAMESTRING;
518 }
519
520 Next->Asl.ExternalName = ExternalName;
521 Status = UtInternalizeName (ExternalName, &Next->Asl.Value.String);
522 if (ACPI_FAILURE (Status))
523 {
524 AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL,
525 Next, "Could not internalize namestring");
526 return;
527 }
528
529 Next->Asl.AmlLength = strlen (Next->Asl.Value.String);
530
531 Next = Next->Asl.Next;
532 Next->Asl.LineNumber = 0;
533 Next->Asl.LogicalLineNumber = 0;
534
535 Next = Next->Asl.Next;
536 Next->Asl.LineNumber = 0;
537 Next->Asl.LogicalLineNumber = 0;
538
539 Next = Next->Asl.Next;
540 Next->Asl.LineNumber = 0;
541 Next->Asl.LogicalLineNumber = 0;
542
543 ParentOp = ExternalOp->Asl.Parent;
544 Prev = Next = ParentOp->Asl.Child;
545
546 /* Now find the External node's position in parse tree */
547
548 while (Next != ExternalOp)
549 {
550 Prev = Next;
551 Next = Next->Asl.Next;
552 }
553
554 /* Remove the External from the parse tree */
555
556 if (Prev == ExternalOp)
557 {
558 /* External was the first child node */
559
560 ParentOp->Asl.Child = ExternalOp->Asl.Next;
561 }
562
563 Prev->Asl.Next = ExternalOp->Asl.Next;
564 ExternalOp->Asl.Next = NULL;
565 ExternalOp->Asl.Parent = AslGbl_ExternalsListHead;
566
567 /* Point the External to the next in the list */
568
569 if (NextOp->Asl.Next)
570 {
571 ExternalOp->Asl.Next = NextOp->Asl.Next->Asl.Child;
572 }
573
574 NextOp = NextOp->Asl.Next;
575 }
576
577 /*
578 * Loop again to remove MethodObj Externals for which
579 * a MethodCall was not found (dead external reference)
580 */
581 Prev = AslGbl_ExternalsListHead->Asl.Child;
582 Next = Prev;
583 while (Next)
584 {
585 ObjType = (ACPI_OBJECT_TYPE)
586 Next->Asl.Child->Asl.Next->Asl.Value.Integer;
587
588 if (ObjType == ACPI_TYPE_METHOD &&
589 !(Next->Asl.CompileFlags & OP_VISITED))
590 {
591 if (Next == Prev)
592 {
593 AslGbl_ExternalsListHead->Asl.Child = Next->Asl.Next;
594 Next->Asl.Next = NULL;
595 Prev = AslGbl_ExternalsListHead->Asl.Child;
596 Next = Prev;
597 continue;
598 }
599 else
600 {
601 Prev->Asl.Next = Next->Asl.Next;
602 Next->Asl.Next = NULL;
603 Next = Prev->Asl.Next;
604 continue;
605 }
606 }
607
608 Prev = Next;
609 Next = Next->Asl.Next;
610 }
611
612 /* If list is now empty, don't bother to make If (0) block */
613
614 if (!AslGbl_ExternalsListHead->Asl.Child)
615 {
616 return;
617 }
618
619 /* Convert Gbl_ExternalsListHead parent to If(). */
620
621 AslGbl_ExternalsListHead->Asl.ParseOpcode = PARSEOP_IF;
622 AslGbl_ExternalsListHead->Asl.AmlOpcode = AML_IF_OP;
623 AslGbl_ExternalsListHead->Asl.CompileFlags = OP_AML_PACKAGE;
624 UtSetParseOpName (AslGbl_ExternalsListHead);
625
626 /* Create a Zero op for the If predicate */
627
628 PredicateOp = TrAllocateOp (PARSEOP_ZERO);
629 PredicateOp->Asl.AmlOpcode = AML_ZERO_OP;
630
631 PredicateOp->Asl.Parent = AslGbl_ExternalsListHead;
632 PredicateOp->Asl.Child = NULL;
633 PredicateOp->Asl.Next = AslGbl_ExternalsListHead->Asl.Child;
634 AslGbl_ExternalsListHead->Asl.Child = PredicateOp;
635
636 /* Set line numbers (for listings, etc.) */
637
638 AslGbl_ExternalsListHead->Asl.LineNumber = 0;
639 AslGbl_ExternalsListHead->Asl.LogicalLineNumber = 0;
640
641 PredicateOp->Asl.LineNumber = 0;
642 PredicateOp->Asl.LogicalLineNumber = 0;
643
644 /* Insert block back in the list */
645
646 Prev = DefinitionBlockOp->Asl.Child;
647 Next = Prev;
648
649 /* Find last default arg */
650
651 for (i = 0; i < 6; i++)
652 {
653 Prev = Next;
654 Next = Prev->Asl.Next;
655 }
656
657 if (Next)
658 {
659 /* Definition Block is not empty */
660
661 AslGbl_ExternalsListHead->Asl.Next = Next;
662 }
663 else
664 {
665 /* Definition Block is empty. */
666
667 AslGbl_ExternalsListHead->Asl.Next = NULL;
668 }
669
670 Prev->Asl.Next = AslGbl_ExternalsListHead;
671 AslGbl_ExternalsListHead->Asl.Parent = Prev->Asl.Parent;
672 }
673