xref: /illumos-gate/usr/src/cmd/acpi/iasl/asllength.c (revision 35786f68)
1bc36eafdSMike Gerdts /******************************************************************************
2bc36eafdSMike Gerdts  *
3bc36eafdSMike Gerdts  * Module Name: asllength - Tree walk to determine package and opcode lengths
4bc36eafdSMike Gerdts  *
5bc36eafdSMike Gerdts  *****************************************************************************/
6bc36eafdSMike Gerdts 
7*35786f68SRobert Mustacchi /******************************************************************************
8*35786f68SRobert Mustacchi  *
9*35786f68SRobert Mustacchi  * 1. Copyright Notice
10*35786f68SRobert Mustacchi  *
11*35786f68SRobert Mustacchi  * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12bc36eafdSMike Gerdts  * All rights reserved.
13bc36eafdSMike Gerdts  *
14*35786f68SRobert Mustacchi  * 2. License
15*35786f68SRobert Mustacchi  *
16*35786f68SRobert Mustacchi  * 2.1. This is your license from Intel Corp. under its intellectual property
17*35786f68SRobert Mustacchi  * rights. You may have additional license terms from the party that provided
18*35786f68SRobert Mustacchi  * you this software, covering your right to use that party's intellectual
19*35786f68SRobert Mustacchi  * property rights.
20*35786f68SRobert Mustacchi  *
21*35786f68SRobert Mustacchi  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22*35786f68SRobert Mustacchi  * copy of the source code appearing in this file ("Covered Code") an
23*35786f68SRobert Mustacchi  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24*35786f68SRobert Mustacchi  * base code distributed originally by Intel ("Original Intel Code") to copy,
25*35786f68SRobert Mustacchi  * make derivatives, distribute, use and display any portion of the Covered
26*35786f68SRobert Mustacchi  * Code in any form, with the right to sublicense such rights; and
27*35786f68SRobert Mustacchi  *
28*35786f68SRobert Mustacchi  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29*35786f68SRobert Mustacchi  * license (with the right to sublicense), under only those claims of Intel
30*35786f68SRobert Mustacchi  * patents that are infringed by the Original Intel Code, to make, use, sell,
31*35786f68SRobert Mustacchi  * offer to sell, and import the Covered Code and derivative works thereof
32*35786f68SRobert Mustacchi  * solely to the minimum extent necessary to exercise the above copyright
33*35786f68SRobert Mustacchi  * license, and in no event shall the patent license extend to any additions
34*35786f68SRobert Mustacchi  * to or modifications of the Original Intel Code. No other license or right
35*35786f68SRobert Mustacchi  * is granted directly or by implication, estoppel or otherwise;
36*35786f68SRobert Mustacchi  *
37*35786f68SRobert Mustacchi  * The above copyright and patent license is granted only if the following
38*35786f68SRobert Mustacchi  * conditions are met:
39*35786f68SRobert Mustacchi  *
40*35786f68SRobert Mustacchi  * 3. Conditions
41*35786f68SRobert Mustacchi  *
42*35786f68SRobert Mustacchi  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43*35786f68SRobert Mustacchi  * Redistribution of source code of any substantial portion of the Covered
44*35786f68SRobert Mustacchi  * Code or modification with rights to further distribute source must include
45*35786f68SRobert Mustacchi  * the above Copyright Notice, the above License, this list of Conditions,
46*35786f68SRobert Mustacchi  * and the following Disclaimer and Export Compliance provision. In addition,
47*35786f68SRobert Mustacchi  * Licensee must cause all Covered Code to which Licensee contributes to
48*35786f68SRobert Mustacchi  * contain a file documenting the changes Licensee made to create that Covered
49*35786f68SRobert Mustacchi  * Code and the date of any change. Licensee must include in that file the
50*35786f68SRobert Mustacchi  * documentation of any changes made by any predecessor Licensee. Licensee
51*35786f68SRobert Mustacchi  * must include a prominent statement that the modification is derived,
52*35786f68SRobert Mustacchi  * directly or indirectly, from Original Intel Code.
53*35786f68SRobert Mustacchi  *
54*35786f68SRobert Mustacchi  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55*35786f68SRobert Mustacchi  * Redistribution of source code of any substantial portion of the Covered
56*35786f68SRobert Mustacchi  * Code or modification without rights to further distribute source must
57*35786f68SRobert Mustacchi  * include the following Disclaimer and Export Compliance provision in the
58*35786f68SRobert Mustacchi  * documentation and/or other materials provided with distribution. In
59*35786f68SRobert Mustacchi  * addition, Licensee may not authorize further sublicense of source of any
60*35786f68SRobert Mustacchi  * portion of the Covered Code, and must include terms to the effect that the
61*35786f68SRobert Mustacchi  * license from Licensee to its licensee is limited to the intellectual
62*35786f68SRobert Mustacchi  * property embodied in the software Licensee provides to its licensee, and
63*35786f68SRobert Mustacchi  * not to intellectual property embodied in modifications its licensee may
64*35786f68SRobert Mustacchi  * make.
65*35786f68SRobert Mustacchi  *
66*35786f68SRobert Mustacchi  * 3.3. Redistribution of Executable. Redistribution in executable form of any
67*35786f68SRobert Mustacchi  * substantial portion of the Covered Code or modification must reproduce the
68*35786f68SRobert Mustacchi  * above Copyright Notice, and the following Disclaimer and Export Compliance
69*35786f68SRobert Mustacchi  * provision in the documentation and/or other materials provided with the
70*35786f68SRobert Mustacchi  * distribution.
71*35786f68SRobert Mustacchi  *
72*35786f68SRobert Mustacchi  * 3.4. Intel retains all right, title, and interest in and to the Original
73*35786f68SRobert Mustacchi  * Intel Code.
74*35786f68SRobert Mustacchi  *
75*35786f68SRobert Mustacchi  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76*35786f68SRobert Mustacchi  * Intel shall be used in advertising or otherwise to promote the sale, use or
77*35786f68SRobert Mustacchi  * other dealings in products derived from or relating to the Covered Code
78*35786f68SRobert Mustacchi  * without prior written authorization from Intel.
79*35786f68SRobert Mustacchi  *
80*35786f68SRobert Mustacchi  * 4. Disclaimer and Export Compliance
81*35786f68SRobert Mustacchi  *
82*35786f68SRobert Mustacchi  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83*35786f68SRobert Mustacchi  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84*35786f68SRobert Mustacchi  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85*35786f68SRobert Mustacchi  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86*35786f68SRobert Mustacchi  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87*35786f68SRobert Mustacchi  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88*35786f68SRobert Mustacchi  * PARTICULAR PURPOSE.
89*35786f68SRobert Mustacchi  *
90*35786f68SRobert Mustacchi  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91*35786f68SRobert Mustacchi  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92*35786f68SRobert Mustacchi  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93*35786f68SRobert Mustacchi  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94*35786f68SRobert Mustacchi  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95*35786f68SRobert Mustacchi  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96*35786f68SRobert Mustacchi  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97*35786f68SRobert Mustacchi  * LIMITED REMEDY.
98*35786f68SRobert Mustacchi  *
99*35786f68SRobert Mustacchi  * 4.3. Licensee shall not export, either directly or indirectly, any of this
100*35786f68SRobert Mustacchi  * software or system incorporating such software without first obtaining any
101*35786f68SRobert Mustacchi  * required license or other approval from the U. S. Department of Commerce or
102*35786f68SRobert Mustacchi  * any other agency or department of the United States Government. In the
103*35786f68SRobert Mustacchi  * event Licensee exports any such software from the United States or
104*35786f68SRobert Mustacchi  * re-exports any such software from a foreign destination, Licensee shall
105*35786f68SRobert Mustacchi  * ensure that the distribution and export/re-export of the software is in
106*35786f68SRobert Mustacchi  * compliance with all laws, regulations, orders, or other restrictions of the
107*35786f68SRobert Mustacchi  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108*35786f68SRobert Mustacchi  * any of its subsidiaries will export/re-export any technical data, process,
109*35786f68SRobert Mustacchi  * software, or service, directly or indirectly, to any country for which the
110*35786f68SRobert Mustacchi  * United States government or any agency thereof requires an export license,
111*35786f68SRobert Mustacchi  * other governmental approval, or letter of assurance, without first obtaining
112*35786f68SRobert Mustacchi  * such license, approval or letter.
113*35786f68SRobert Mustacchi  *
114*35786f68SRobert Mustacchi  *****************************************************************************
115*35786f68SRobert Mustacchi  *
116*35786f68SRobert Mustacchi  * Alternatively, you may choose to be licensed under the terms of the
117*35786f68SRobert Mustacchi  * following license:
118*35786f68SRobert Mustacchi  *
119bc36eafdSMike Gerdts  * Redistribution and use in source and binary forms, with or without
120bc36eafdSMike Gerdts  * modification, are permitted provided that the following conditions
121bc36eafdSMike Gerdts  * are met:
122bc36eafdSMike Gerdts  * 1. Redistributions of source code must retain the above copyright
123bc36eafdSMike Gerdts  *    notice, this list of conditions, and the following disclaimer,
124bc36eafdSMike Gerdts  *    without modification.
125bc36eafdSMike Gerdts  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126bc36eafdSMike Gerdts  *    substantially similar to the "NO WARRANTY" disclaimer below
127bc36eafdSMike Gerdts  *    ("Disclaimer") and any redistribution must be conditioned upon
128bc36eafdSMike Gerdts  *    including a substantially similar Disclaimer requirement for further
129bc36eafdSMike Gerdts  *    binary redistribution.
130bc36eafdSMike Gerdts  * 3. Neither the names of the above-listed copyright holders nor the names
131bc36eafdSMike Gerdts  *    of any contributors may be used to endorse or promote products derived
132bc36eafdSMike Gerdts  *    from this software without specific prior written permission.
133bc36eafdSMike Gerdts  *
134bc36eafdSMike Gerdts  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135bc36eafdSMike Gerdts  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136*35786f68SRobert Mustacchi  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137bc36eafdSMike Gerdts  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138*35786f68SRobert Mustacchi  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139*35786f68SRobert Mustacchi  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140*35786f68SRobert Mustacchi  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141*35786f68SRobert Mustacchi  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142*35786f68SRobert Mustacchi  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143*35786f68SRobert Mustacchi  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144*35786f68SRobert Mustacchi  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145*35786f68SRobert Mustacchi  *
146*35786f68SRobert Mustacchi  * Alternatively, you may choose to be licensed under the terms of the
147*35786f68SRobert Mustacchi  * GNU General Public License ("GPL") version 2 as published by the Free
148*35786f68SRobert Mustacchi  * Software Foundation.
149*35786f68SRobert Mustacchi  *
150*35786f68SRobert Mustacchi  *****************************************************************************/
151bc36eafdSMike Gerdts 
152bc36eafdSMike Gerdts #include "aslcompiler.h"
153bc36eafdSMike Gerdts #include "aslcompiler.y.h"
154bc36eafdSMike Gerdts #include "amlcode.h"
155*35786f68SRobert Mustacchi #include "acconvert.h"
156bc36eafdSMike Gerdts 
157bc36eafdSMike Gerdts 
158bc36eafdSMike Gerdts #define _COMPONENT          ACPI_COMPILER
159bc36eafdSMike Gerdts         ACPI_MODULE_NAME    ("asllength")
160bc36eafdSMike Gerdts 
161bc36eafdSMike Gerdts /* Local prototypes */
162bc36eafdSMike Gerdts 
163bc36eafdSMike Gerdts static UINT8
164bc36eafdSMike Gerdts CgGetPackageLenByteCount (
165bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *Op,
166bc36eafdSMike Gerdts     UINT32                  PackageLength);
167bc36eafdSMike Gerdts 
168bc36eafdSMike Gerdts static void
169bc36eafdSMike Gerdts CgGenerateAmlOpcodeLength (
170bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *Op);
171bc36eafdSMike Gerdts 
172bc36eafdSMike Gerdts 
173bc36eafdSMike Gerdts #ifdef ACPI_OBSOLETE_FUNCTIONS
174bc36eafdSMike Gerdts void
175bc36eafdSMike Gerdts LnAdjustLengthToRoot (
176bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *Op,
177bc36eafdSMike Gerdts     UINT32                  LengthDelta);
178bc36eafdSMike Gerdts #endif
179bc36eafdSMike Gerdts 
180bc36eafdSMike Gerdts 
181bc36eafdSMike Gerdts /*******************************************************************************
182bc36eafdSMike Gerdts  *
183bc36eafdSMike Gerdts  * FUNCTION:    LnInitLengthsWalk
184bc36eafdSMike Gerdts  *
185bc36eafdSMike Gerdts  * PARAMETERS:  ASL_WALK_CALLBACK
186bc36eafdSMike Gerdts  *
187bc36eafdSMike Gerdts  * RETURN:      Status
188bc36eafdSMike Gerdts  *
189bc36eafdSMike Gerdts  * DESCRIPTION: Walk callback to initialize (and re-initialize) the node
190bc36eafdSMike Gerdts  *              subtree length(s) to zero. The Subtree lengths are bubbled
191bc36eafdSMike Gerdts  *              up to the root node in order to get a total AML length.
192bc36eafdSMike Gerdts  *
193bc36eafdSMike Gerdts  ******************************************************************************/
194bc36eafdSMike Gerdts 
195bc36eafdSMike Gerdts ACPI_STATUS
LnInitLengthsWalk(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)196bc36eafdSMike Gerdts LnInitLengthsWalk (
197bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *Op,
198bc36eafdSMike Gerdts     UINT32                  Level,
199bc36eafdSMike Gerdts     void                    *Context)
200bc36eafdSMike Gerdts {
201bc36eafdSMike Gerdts 
202bc36eafdSMike Gerdts     Op->Asl.AmlSubtreeLength = 0;
203bc36eafdSMike Gerdts     return (AE_OK);
204bc36eafdSMike Gerdts }
205bc36eafdSMike Gerdts 
206bc36eafdSMike Gerdts 
207bc36eafdSMike Gerdts /*******************************************************************************
208bc36eafdSMike Gerdts  *
209bc36eafdSMike Gerdts  * FUNCTION:    LnPackageLengthWalk
210bc36eafdSMike Gerdts  *
211bc36eafdSMike Gerdts  * PARAMETERS:  ASL_WALK_CALLBACK
212bc36eafdSMike Gerdts  *
213bc36eafdSMike Gerdts  * RETURN:      Status
214bc36eafdSMike Gerdts  *
215bc36eafdSMike Gerdts  * DESCRIPTION: Walk callback to calculate the total AML length.
216bc36eafdSMike Gerdts  *              1) Calculate the AML lengths (opcode, package length, etc.) for
217bc36eafdSMike Gerdts  *                 THIS node.
218bc36eafdSMike Gerdts  *              2) Bubbble up all of these lengths to the parent node by summing
219bc36eafdSMike Gerdts  *                 them all into the parent subtree length.
220bc36eafdSMike Gerdts  *
221bc36eafdSMike Gerdts  * Note:  The SubtreeLength represents the total AML length of all child nodes
222bc36eafdSMike Gerdts  *        in all subtrees under a given node. Therefore, once this walk is
223bc36eafdSMike Gerdts  *        complete, the Root Node subtree length is the AML length of the entire
224bc36eafdSMike Gerdts  *        tree (and thus, the entire ACPI table)
225bc36eafdSMike Gerdts  *
226bc36eafdSMike Gerdts  ******************************************************************************/
227bc36eafdSMike Gerdts 
228bc36eafdSMike Gerdts ACPI_STATUS
LnPackageLengthWalk(ACPI_PARSE_OBJECT * Op,UINT32 Level,void * Context)229bc36eafdSMike Gerdts LnPackageLengthWalk (
230bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *Op,
231bc36eafdSMike Gerdts     UINT32                  Level,
232bc36eafdSMike Gerdts     void                    *Context)
233bc36eafdSMike Gerdts {
234bc36eafdSMike Gerdts 
235bc36eafdSMike Gerdts     /* Generate the AML lengths for this node */
236bc36eafdSMike Gerdts 
237bc36eafdSMike Gerdts     CgGenerateAmlLengths (Op);
238bc36eafdSMike Gerdts 
239bc36eafdSMike Gerdts     /* Bubble up all lengths (this node and all below it) to the parent */
240bc36eafdSMike Gerdts 
241bc36eafdSMike Gerdts     if ((Op->Asl.Parent) &&
242bc36eafdSMike Gerdts         (Op->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG))
243bc36eafdSMike Gerdts     {
244bc36eafdSMike Gerdts         Op->Asl.Parent->Asl.AmlSubtreeLength += (
245bc36eafdSMike Gerdts             Op->Asl.AmlLength +
246bc36eafdSMike Gerdts             Op->Asl.AmlOpcodeLength +
247bc36eafdSMike Gerdts             Op->Asl.AmlPkgLenBytes +
248*35786f68SRobert Mustacchi             Op->Asl.AmlSubtreeLength +
249*35786f68SRobert Mustacchi             CvCalculateCommentLengths (Op)
250*35786f68SRobert Mustacchi         );
251bc36eafdSMike Gerdts     }
252bc36eafdSMike Gerdts     return (AE_OK);
253bc36eafdSMike Gerdts }
254bc36eafdSMike Gerdts 
255bc36eafdSMike Gerdts 
256bc36eafdSMike Gerdts /*******************************************************************************
257bc36eafdSMike Gerdts  *
258bc36eafdSMike Gerdts  * FUNCTION:    CgGetPackageLenByteCount
259bc36eafdSMike Gerdts  *
260bc36eafdSMike Gerdts  * PARAMETERS:  Op              - Parse node
261bc36eafdSMike Gerdts  *              PackageLength   - Length to be encoded
262bc36eafdSMike Gerdts  *
263bc36eafdSMike Gerdts  * RETURN:      Required length of the package length encoding
264bc36eafdSMike Gerdts  *
265bc36eafdSMike Gerdts  * DESCRIPTION: Calculate the number of bytes required to encode the given
266bc36eafdSMike Gerdts  *              package length.
267bc36eafdSMike Gerdts  *
268bc36eafdSMike Gerdts  ******************************************************************************/
269bc36eafdSMike Gerdts 
270bc36eafdSMike Gerdts static UINT8
CgGetPackageLenByteCount(ACPI_PARSE_OBJECT * Op,UINT32 PackageLength)271bc36eafdSMike Gerdts CgGetPackageLenByteCount (
272bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *Op,
273bc36eafdSMike Gerdts     UINT32                  PackageLength)
274bc36eafdSMike Gerdts {
275bc36eafdSMike Gerdts 
276bc36eafdSMike Gerdts     /*
277bc36eafdSMike Gerdts      * Determine the number of bytes required to encode the package length
278bc36eafdSMike Gerdts      * Note: the package length includes the number of bytes used to encode
279bc36eafdSMike Gerdts      * the package length, so we must account for this also.
280bc36eafdSMike Gerdts      */
281bc36eafdSMike Gerdts     if (PackageLength <= (0x0000003F - 1))
282bc36eafdSMike Gerdts     {
283bc36eafdSMike Gerdts         return (1);
284bc36eafdSMike Gerdts     }
285bc36eafdSMike Gerdts     else if (PackageLength <= (0x00000FFF - 2))
286bc36eafdSMike Gerdts     {
287bc36eafdSMike Gerdts         return (2);
288bc36eafdSMike Gerdts     }
289bc36eafdSMike Gerdts     else if (PackageLength <= (0x000FFFFF - 3))
290bc36eafdSMike Gerdts     {
291bc36eafdSMike Gerdts         return (3);
292bc36eafdSMike Gerdts     }
293bc36eafdSMike Gerdts     else if (PackageLength <= (0x0FFFFFFF - 4))
294bc36eafdSMike Gerdts     {
295bc36eafdSMike Gerdts         return (4);
296bc36eafdSMike Gerdts     }
297bc36eafdSMike Gerdts     else
298bc36eafdSMike Gerdts     {
299bc36eafdSMike Gerdts         /* Fatal error - the package length is too large to encode */
300bc36eafdSMike Gerdts 
301bc36eafdSMike Gerdts         AslError (ASL_ERROR, ASL_MSG_ENCODING_LENGTH, Op, NULL);
302bc36eafdSMike Gerdts     }
303bc36eafdSMike Gerdts 
304bc36eafdSMike Gerdts     return (0);
305bc36eafdSMike Gerdts }
306bc36eafdSMike Gerdts 
307bc36eafdSMike Gerdts 
308bc36eafdSMike Gerdts /*******************************************************************************
309bc36eafdSMike Gerdts  *
310bc36eafdSMike Gerdts  * FUNCTION:    CgGenerateAmlOpcodeLength
311bc36eafdSMike Gerdts  *
312bc36eafdSMike Gerdts  * PARAMETERS:  Op          - Parse node whose AML opcode lengths will be
313bc36eafdSMike Gerdts  *                            calculated
314bc36eafdSMike Gerdts  *
315bc36eafdSMike Gerdts  * RETURN:      None.
316bc36eafdSMike Gerdts  *
317bc36eafdSMike Gerdts  * DESCRIPTION: Calculate the AmlOpcodeLength, AmlPkgLenBytes, and AmlLength
318bc36eafdSMike Gerdts  *              fields for this node.
319bc36eafdSMike Gerdts  *
320bc36eafdSMike Gerdts  ******************************************************************************/
321bc36eafdSMike Gerdts 
322bc36eafdSMike Gerdts static void
CgGenerateAmlOpcodeLength(ACPI_PARSE_OBJECT * Op)323bc36eafdSMike Gerdts CgGenerateAmlOpcodeLength (
324bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *Op)
325bc36eafdSMike Gerdts {
326bc36eafdSMike Gerdts 
327bc36eafdSMike Gerdts     /* Check for two-byte opcode */
328bc36eafdSMike Gerdts 
329bc36eafdSMike Gerdts     if (Op->Asl.AmlOpcode > 0x00FF)
330bc36eafdSMike Gerdts     {
331bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 2;
332bc36eafdSMike Gerdts     }
333bc36eafdSMike Gerdts     else
334bc36eafdSMike Gerdts     {
335bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 1;
336bc36eafdSMike Gerdts     }
337bc36eafdSMike Gerdts 
338bc36eafdSMike Gerdts     /* Does this opcode have an associated "PackageLength" field? */
339bc36eafdSMike Gerdts 
340bc36eafdSMike Gerdts     Op->Asl.AmlPkgLenBytes = 0;
341*35786f68SRobert Mustacchi     if (Op->Asl.CompileFlags & OP_AML_PACKAGE)
342bc36eafdSMike Gerdts     {
343bc36eafdSMike Gerdts         Op->Asl.AmlPkgLenBytes = CgGetPackageLenByteCount (
344bc36eafdSMike Gerdts             Op, Op->Asl.AmlSubtreeLength);
345bc36eafdSMike Gerdts     }
346bc36eafdSMike Gerdts 
347bc36eafdSMike Gerdts     /* Data opcode lengths are easy */
348bc36eafdSMike Gerdts 
349bc36eafdSMike Gerdts     switch (Op->Asl.AmlOpcode)
350bc36eafdSMike Gerdts     {
351bc36eafdSMike Gerdts     case AML_BYTE_OP:
352bc36eafdSMike Gerdts 
353bc36eafdSMike Gerdts         Op->Asl.AmlLength = 1;
354bc36eafdSMike Gerdts         break;
355bc36eafdSMike Gerdts 
356bc36eafdSMike Gerdts     case AML_WORD_OP:
357bc36eafdSMike Gerdts 
358bc36eafdSMike Gerdts         Op->Asl.AmlLength = 2;
359bc36eafdSMike Gerdts         break;
360bc36eafdSMike Gerdts 
361bc36eafdSMike Gerdts     case AML_DWORD_OP:
362bc36eafdSMike Gerdts 
363bc36eafdSMike Gerdts         Op->Asl.AmlLength = 4;
364bc36eafdSMike Gerdts         break;
365bc36eafdSMike Gerdts 
366bc36eafdSMike Gerdts     case AML_QWORD_OP:
367bc36eafdSMike Gerdts 
368bc36eafdSMike Gerdts         Op->Asl.AmlLength = 8;
369bc36eafdSMike Gerdts         break;
370bc36eafdSMike Gerdts 
371bc36eafdSMike Gerdts     default:
372bc36eafdSMike Gerdts 
373bc36eafdSMike Gerdts         /* All data opcodes must be above */
374bc36eafdSMike Gerdts         break;
375bc36eafdSMike Gerdts     }
376bc36eafdSMike Gerdts }
377bc36eafdSMike Gerdts 
378bc36eafdSMike Gerdts 
379bc36eafdSMike Gerdts /*******************************************************************************
380bc36eafdSMike Gerdts  *
381bc36eafdSMike Gerdts  * FUNCTION:    CgGenerateAmlLengths
382bc36eafdSMike Gerdts  *
383bc36eafdSMike Gerdts  * PARAMETERS:  Op        - Parse node
384bc36eafdSMike Gerdts  *
385bc36eafdSMike Gerdts  * RETURN:      None.
386bc36eafdSMike Gerdts  *
387bc36eafdSMike Gerdts  * DESCRIPTION: Generate internal length fields based on the AML opcode or
388bc36eafdSMike Gerdts  *              parse opcode.
389bc36eafdSMike Gerdts  *
390bc36eafdSMike Gerdts  ******************************************************************************/
391bc36eafdSMike Gerdts 
392bc36eafdSMike Gerdts void
CgGenerateAmlLengths(ACPI_PARSE_OBJECT * Op)393bc36eafdSMike Gerdts CgGenerateAmlLengths (
394bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *Op)
395bc36eafdSMike Gerdts {
396bc36eafdSMike Gerdts     char                    *Buffer;
397bc36eafdSMike Gerdts     ACPI_STATUS             Status;
398bc36eafdSMike Gerdts 
399bc36eafdSMike Gerdts 
400bc36eafdSMike Gerdts     switch (Op->Asl.AmlOpcode)
401bc36eafdSMike Gerdts     {
402bc36eafdSMike Gerdts     case AML_RAW_DATA_BYTE:
403bc36eafdSMike Gerdts 
404bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
405bc36eafdSMike Gerdts         Op->Asl.AmlLength = 1;
406bc36eafdSMike Gerdts         return;
407bc36eafdSMike Gerdts 
408bc36eafdSMike Gerdts     case AML_RAW_DATA_WORD:
409bc36eafdSMike Gerdts 
410bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
411bc36eafdSMike Gerdts         Op->Asl.AmlLength = 2;
412bc36eafdSMike Gerdts         return;
413bc36eafdSMike Gerdts 
414bc36eafdSMike Gerdts     case AML_RAW_DATA_DWORD:
415bc36eafdSMike Gerdts 
416bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
417bc36eafdSMike Gerdts         Op->Asl.AmlLength = 4;
418bc36eafdSMike Gerdts         return;
419bc36eafdSMike Gerdts 
420bc36eafdSMike Gerdts     case AML_RAW_DATA_QWORD:
421bc36eafdSMike Gerdts 
422bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
423bc36eafdSMike Gerdts         Op->Asl.AmlLength = 8;
424bc36eafdSMike Gerdts         return;
425bc36eafdSMike Gerdts 
426bc36eafdSMike Gerdts     case AML_RAW_DATA_BUFFER:
427bc36eafdSMike Gerdts 
428bc36eafdSMike Gerdts         /* Aml length is/was set by creator */
429bc36eafdSMike Gerdts 
430bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
431bc36eafdSMike Gerdts         return;
432bc36eafdSMike Gerdts 
433bc36eafdSMike Gerdts     case AML_RAW_DATA_CHAIN:
434bc36eafdSMike Gerdts 
435bc36eafdSMike Gerdts         /* Aml length is/was set by creator */
436bc36eafdSMike Gerdts 
437bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
438bc36eafdSMike Gerdts         return;
439bc36eafdSMike Gerdts 
440bc36eafdSMike Gerdts     default:
441bc36eafdSMike Gerdts 
442bc36eafdSMike Gerdts         break;
443bc36eafdSMike Gerdts     }
444bc36eafdSMike Gerdts 
445bc36eafdSMike Gerdts     switch (Op->Asl.ParseOpcode)
446bc36eafdSMike Gerdts     {
447bc36eafdSMike Gerdts     case PARSEOP_DEFINITION_BLOCK:
448bc36eafdSMike Gerdts 
449bc36eafdSMike Gerdts         Gbl_TableLength = sizeof (ACPI_TABLE_HEADER) + Op->Asl.AmlSubtreeLength;
450bc36eafdSMike Gerdts         break;
451bc36eafdSMike Gerdts 
452bc36eafdSMike Gerdts     case PARSEOP_NAMESEG:
453bc36eafdSMike Gerdts 
454bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
455bc36eafdSMike Gerdts         Op->Asl.AmlLength = 4;
456bc36eafdSMike Gerdts         Op->Asl.ExternalName = Op->Asl.Value.String;
457bc36eafdSMike Gerdts         break;
458bc36eafdSMike Gerdts 
459bc36eafdSMike Gerdts     case PARSEOP_NAMESTRING:
460bc36eafdSMike Gerdts     case PARSEOP_METHODCALL:
461bc36eafdSMike Gerdts 
462*35786f68SRobert Mustacchi         if (Op->Asl.CompileFlags & OP_NAME_INTERNALIZED)
463bc36eafdSMike Gerdts         {
464bc36eafdSMike Gerdts             break;
465bc36eafdSMike Gerdts         }
466bc36eafdSMike Gerdts 
467bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
468bc36eafdSMike Gerdts         Status = UtInternalizeName (Op->Asl.Value.String, &Buffer);
469bc36eafdSMike Gerdts         if (ACPI_FAILURE (Status))
470bc36eafdSMike Gerdts         {
471bc36eafdSMike Gerdts             DbgPrint (ASL_DEBUG_OUTPUT,
472bc36eafdSMike Gerdts                 "Failure from internalize name %X\n", Status);
473bc36eafdSMike Gerdts             break;
474bc36eafdSMike Gerdts         }
475bc36eafdSMike Gerdts 
476bc36eafdSMike Gerdts         Op->Asl.ExternalName = Op->Asl.Value.String;
477bc36eafdSMike Gerdts         Op->Asl.Value.String = Buffer;
478*35786f68SRobert Mustacchi         Op->Asl.CompileFlags |= OP_NAME_INTERNALIZED;
479bc36eafdSMike Gerdts         Op->Asl.AmlLength = strlen (Buffer);
480bc36eafdSMike Gerdts 
481bc36eafdSMike Gerdts         /*
482bc36eafdSMike Gerdts          * Check for single backslash reference to root,
483bc36eafdSMike Gerdts          * make it a null terminated string in the AML
484bc36eafdSMike Gerdts          */
485bc36eafdSMike Gerdts         if (Op->Asl.AmlLength == 1)
486bc36eafdSMike Gerdts         {
487bc36eafdSMike Gerdts             Op->Asl.AmlLength = 2;
488bc36eafdSMike Gerdts         }
489bc36eafdSMike Gerdts         break;
490bc36eafdSMike Gerdts 
491bc36eafdSMike Gerdts     case PARSEOP_STRING_LITERAL:
492bc36eafdSMike Gerdts 
493bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 1;
494bc36eafdSMike Gerdts 
495bc36eafdSMike Gerdts         /* Get null terminator */
496bc36eafdSMike Gerdts 
497bc36eafdSMike Gerdts         Op->Asl.AmlLength = strlen (Op->Asl.Value.String) + 1;
498bc36eafdSMike Gerdts         break;
499bc36eafdSMike Gerdts 
500bc36eafdSMike Gerdts     case PARSEOP_PACKAGE_LENGTH:
501bc36eafdSMike Gerdts 
502bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
503bc36eafdSMike Gerdts         Op->Asl.AmlPkgLenBytes = CgGetPackageLenByteCount (Op,
504bc36eafdSMike Gerdts             (UINT32) Op->Asl.Value.Integer);
505bc36eafdSMike Gerdts         break;
506bc36eafdSMike Gerdts 
507bc36eafdSMike Gerdts     case PARSEOP_RAW_DATA:
508bc36eafdSMike Gerdts 
509bc36eafdSMike Gerdts         Op->Asl.AmlOpcodeLength = 0;
510bc36eafdSMike Gerdts         break;
511bc36eafdSMike Gerdts 
512bc36eafdSMike Gerdts     case PARSEOP_DEFAULT_ARG:
513bc36eafdSMike Gerdts     case PARSEOP_INCLUDE:
514bc36eafdSMike Gerdts     case PARSEOP_INCLUDE_END:
515bc36eafdSMike Gerdts 
516bc36eafdSMike Gerdts         /* Ignore the "default arg" nodes, they are extraneous at this point */
517bc36eafdSMike Gerdts 
518bc36eafdSMike Gerdts         break;
519bc36eafdSMike Gerdts 
520bc36eafdSMike Gerdts     case PARSEOP_EXTERNAL:
521bc36eafdSMike Gerdts 
522bc36eafdSMike Gerdts         if (Gbl_DoExternals == TRUE)
523bc36eafdSMike Gerdts         {
524bc36eafdSMike Gerdts             CgGenerateAmlOpcodeLength (Op);
525bc36eafdSMike Gerdts         }
526bc36eafdSMike Gerdts         break;
527bc36eafdSMike Gerdts 
528bc36eafdSMike Gerdts     default:
529bc36eafdSMike Gerdts 
530bc36eafdSMike Gerdts         CgGenerateAmlOpcodeLength (Op);
531bc36eafdSMike Gerdts         break;
532bc36eafdSMike Gerdts     }
533bc36eafdSMike Gerdts }
534bc36eafdSMike Gerdts 
535bc36eafdSMike Gerdts 
536bc36eafdSMike Gerdts #ifdef ACPI_OBSOLETE_FUNCTIONS
537bc36eafdSMike Gerdts /*******************************************************************************
538bc36eafdSMike Gerdts  *
539bc36eafdSMike Gerdts  * FUNCTION:    LnAdjustLengthToRoot
540bc36eafdSMike Gerdts  *
541bc36eafdSMike Gerdts  * PARAMETERS:  Op      - Node whose Length was changed
542bc36eafdSMike Gerdts  *
543bc36eafdSMike Gerdts  * RETURN:      None.
544bc36eafdSMike Gerdts  *
545bc36eafdSMike Gerdts  * DESCRIPTION: Change the Subtree length of the given node, and bubble the
546bc36eafdSMike Gerdts  *              change all the way up to the root node. This allows for
547bc36eafdSMike Gerdts  *              last second changes to a package length (for example, if the
548bc36eafdSMike Gerdts  *              package length encoding gets shorter or longer.)
549bc36eafdSMike Gerdts  *
550bc36eafdSMike Gerdts  ******************************************************************************/
551bc36eafdSMike Gerdts 
552bc36eafdSMike Gerdts void
LnAdjustLengthToRoot(ACPI_PARSE_OBJECT * SubtreeOp,UINT32 LengthDelta)553bc36eafdSMike Gerdts LnAdjustLengthToRoot (
554bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *SubtreeOp,
555bc36eafdSMike Gerdts     UINT32                  LengthDelta)
556bc36eafdSMike Gerdts {
557bc36eafdSMike Gerdts     ACPI_PARSE_OBJECT       *Op;
558bc36eafdSMike Gerdts 
559bc36eafdSMike Gerdts 
560bc36eafdSMike Gerdts     /* Adjust all subtree lengths up to the root */
561bc36eafdSMike Gerdts 
562bc36eafdSMike Gerdts     Op = SubtreeOp->Asl.Parent;
563bc36eafdSMike Gerdts     while (Op)
564bc36eafdSMike Gerdts     {
565bc36eafdSMike Gerdts         Op->Asl.AmlSubtreeLength -= LengthDelta;
566bc36eafdSMike Gerdts         Op = Op->Asl.Parent;
567bc36eafdSMike Gerdts     }
568bc36eafdSMike Gerdts 
569bc36eafdSMike Gerdts     /* Adjust the global table length */
570bc36eafdSMike Gerdts 
571bc36eafdSMike Gerdts     Gbl_TableLength -= LengthDelta;
572bc36eafdSMike Gerdts }
573bc36eafdSMike Gerdts #endif
574