2 /******************************************************************************
4 * Module Name: exstoren - AML Interpreter object store support,
5 * Store to Node (namespace object)
8 *****************************************************************************/
10 /******************************************************************************
14 * Some or all of this work - Copyright (c) 1999 - 2005, Intel Corp.
15 * All rights reserved.
19 * 2.1. This is your license from Intel Corp. under its intellectual property
20 * rights. You may have additional license terms from the party that provided
21 * you this software, covering your right to use that party's intellectual
24 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
25 * copy of the source code appearing in this file ("Covered Code") an
26 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
27 * base code distributed originally by Intel ("Original Intel Code") to copy,
28 * make derivatives, distribute, use and display any portion of the Covered
29 * Code in any form, with the right to sublicense such rights; and
31 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
32 * license (with the right to sublicense), under only those claims of Intel
33 * patents that are infringed by the Original Intel Code, to make, use, sell,
34 * offer to sell, and import the Covered Code and derivative works thereof
35 * solely to the minimum extent necessary to exercise the above copyright
36 * license, and in no event shall the patent license extend to any additions
37 * to or modifications of the Original Intel Code. No other license or right
38 * is granted directly or by implication, estoppel or otherwise;
40 * The above copyright and patent license is granted only if the following
45 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
46 * Redistribution of source code of any substantial portion of the Covered
47 * Code or modification with rights to further distribute source must include
48 * the above Copyright Notice, the above License, this list of Conditions,
49 * and the following Disclaimer and Export Compliance provision. In addition,
50 * Licensee must cause all Covered Code to which Licensee contributes to
51 * contain a file documenting the changes Licensee made to create that Covered
52 * Code and the date of any change. Licensee must include in that file the
53 * documentation of any changes made by any predecessor Licensee. Licensee
54 * must include a prominent statement that the modification is derived,
55 * directly or indirectly, from Original Intel Code.
57 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
58 * Redistribution of source code of any substantial portion of the Covered
59 * Code or modification without rights to further distribute source must
60 * include the following Disclaimer and Export Compliance provision in the
61 * documentation and/or other materials provided with distribution. In
62 * addition, Licensee may not authorize further sublicense of source of any
63 * portion of the Covered Code, and must include terms to the effect that the
64 * license from Licensee to its licensee is limited to the intellectual
65 * property embodied in the software Licensee provides to its licensee, and
66 * not to intellectual property embodied in modifications its licensee may
69 * 3.3. Redistribution of Executable. Redistribution in executable form of any
70 * substantial portion of the Covered Code or modification must reproduce the
71 * above Copyright Notice, and the following Disclaimer and Export Compliance
72 * provision in the documentation and/or other materials provided with the
75 * 3.4. Intel retains all right, title, and interest in and to the Original
78 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
79 * Intel shall be used in advertising or otherwise to promote the sale, use or
80 * other dealings in products derived from or relating to the Covered Code
81 * without prior written authorization from Intel.
83 * 4. Disclaimer and Export Compliance
85 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
86 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
87 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
88 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
89 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
90 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
93 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
94 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
95 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
96 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
97 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
98 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
99 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
102 * 4.3. Licensee shall not export, either directly or indirectly, any of this
103 * software or system incorporating such software without first obtaining any
104 * required license or other approval from the U. S. Department of Commerce or
105 * any other agency or department of the United States Government. In the
106 * event Licensee exports any such software from the United States or
107 * re-exports any such software from a foreign destination, Licensee shall
108 * ensure that the distribution and export/re-export of the software is in
109 * compliance with all laws, regulations, orders, or other restrictions of the
110 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
111 * any of its subsidiaries will export/re-export any technical data, process,
112 * software, or service, directly or indirectly, to any country for which the
113 * United States government or any agency thereof requires an export license,
114 * other governmental approval, or letter of assurance, without first obtaining
115 * such license, approval or letter.
117 *****************************************************************************/
119 #define __EXSTOREN_C__
122 #include "acinterp.h"
126 #define _COMPONENT ACPI_EXECUTER
127 ACPI_MODULE_NAME ("exstoren")
130 /*******************************************************************************
132 * FUNCTION: AcpiExResolveObject
134 * PARAMETERS: SourceDescPtr - Pointer to the source object
135 * TargetType - Current type of the target
136 * WalkState - Current walk state
138 * RETURN: Status, resolved object in SourceDescPtr.
140 * DESCRIPTION: Resolve an object. If the object is a reference, dereference
141 * it and return the actual object in the SourceDescPtr.
143 ******************************************************************************/
146 AcpiExResolveObject (
147 ACPI_OPERAND_OBJECT **SourceDescPtr,
148 ACPI_OBJECT_TYPE TargetType,
149 ACPI_WALK_STATE *WalkState)
151 ACPI_OPERAND_OBJECT *SourceDesc = *SourceDescPtr;
152 ACPI_STATUS Status = AE_OK;
155 ACPI_FUNCTION_TRACE ("ExResolveObject");
159 * Ensure we have a Target that can be stored to
163 case ACPI_TYPE_BUFFER_FIELD:
164 case ACPI_TYPE_LOCAL_REGION_FIELD:
165 case ACPI_TYPE_LOCAL_BANK_FIELD:
166 case ACPI_TYPE_LOCAL_INDEX_FIELD:
168 * These cases all require only Integers or values that
169 * can be converted to Integers (Strings or Buffers)
172 case ACPI_TYPE_INTEGER:
173 case ACPI_TYPE_STRING:
174 case ACPI_TYPE_BUFFER:
177 * Stores into a Field/Region or into a Integer/Buffer/String
178 * are all essentially the same. This case handles the
179 * "interchangeable" types Integer, String, and Buffer.
181 if (ACPI_GET_OBJECT_TYPE (SourceDesc) == ACPI_TYPE_LOCAL_REFERENCE)
183 /* Resolve a reference object first */
185 Status = AcpiExResolveToValue (SourceDescPtr, WalkState);
186 if (ACPI_FAILURE (Status))
192 /* For CopyObject, no further validation necessary */
194 if (WalkState->Opcode == AML_COPY_OP)
200 * Must have a Integer, Buffer, or String
202 if ((ACPI_GET_OBJECT_TYPE (SourceDesc) != ACPI_TYPE_INTEGER) &&
203 (ACPI_GET_OBJECT_TYPE (SourceDesc) != ACPI_TYPE_BUFFER) &&
204 (ACPI_GET_OBJECT_TYPE (SourceDesc) != ACPI_TYPE_STRING) &&
205 !((ACPI_GET_OBJECT_TYPE (SourceDesc) == ACPI_TYPE_LOCAL_REFERENCE) && (SourceDesc->Reference.Opcode == AML_LOAD_OP)))
208 * Conversion successful but still not a valid type
210 ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
211 "Cannot assign type %s to %s (must be type Int/Str/Buf)\n",
212 AcpiUtGetObjectTypeName (SourceDesc),
213 AcpiUtGetTypeName (TargetType)));
214 Status = AE_AML_OPERAND_TYPE;
219 case ACPI_TYPE_LOCAL_ALIAS:
220 case ACPI_TYPE_LOCAL_METHOD_ALIAS:
223 * Aliases are resolved by AcpiExPrepOperands
225 ACPI_REPORT_ERROR (("Store into Alias - should never happen\n"));
226 Status = AE_AML_INTERNAL;
230 case ACPI_TYPE_PACKAGE:
234 * All other types than Alias and the various Fields come here,
235 * including the untyped case - ACPI_TYPE_ANY.
240 return_ACPI_STATUS (Status);
244 /*******************************************************************************
246 * FUNCTION: AcpiExStoreObjectToObject
248 * PARAMETERS: SourceDesc - Object to store
249 * DestDesc - Object to receive a copy of the source
250 * NewDesc - New object if DestDesc is obsoleted
251 * WalkState - Current walk state
255 * DESCRIPTION: "Store" an object to another object. This may include
256 * converting the source type to the target type (implicit
257 * conversion), and a copy of the value of the source to
260 * The Assignment of an object to another (not named) object
262 * The Source passed in will replace the current value (if any)
263 * with the input value.
265 * When storing into an object the data is converted to the
266 * target object type then stored in the object. This means
267 * that the target object type (for an initialized target) will
268 * not be changed by a store operation.
270 * This module allows destination types of Number, String,
271 * Buffer, and Package.
273 * Assumes parameters are already validated. NOTE: SourceDesc
274 * resolution (from a reference object) must be performed by
275 * the caller if necessary.
277 ******************************************************************************/
280 AcpiExStoreObjectToObject (
281 ACPI_OPERAND_OBJECT *SourceDesc,
282 ACPI_OPERAND_OBJECT *DestDesc,
283 ACPI_OPERAND_OBJECT **NewDesc,
284 ACPI_WALK_STATE *WalkState)
286 ACPI_OPERAND_OBJECT *ActualSrcDesc;
287 ACPI_STATUS Status = AE_OK;
290 ACPI_FUNCTION_TRACE_PTR ("ExStoreObjectToObject", SourceDesc);
293 ActualSrcDesc = SourceDesc;
297 * There is no destination object (An uninitialized node or
298 * package element), so we can simply copy the source object
299 * creating a new destination object
301 Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, NewDesc, WalkState);
302 return_ACPI_STATUS (Status);
305 if (ACPI_GET_OBJECT_TYPE (SourceDesc) != ACPI_GET_OBJECT_TYPE (DestDesc))
308 * The source type does not match the type of the destination.
309 * Perform the "implicit conversion" of the source to the current type
310 * of the target as per the ACPI specification.
312 * If no conversion performed, ActualSrcDesc = SourceDesc.
313 * Otherwise, ActualSrcDesc is a temporary object to hold the
316 Status = AcpiExConvertToTargetType (ACPI_GET_OBJECT_TYPE (DestDesc),
317 SourceDesc, &ActualSrcDesc, WalkState);
318 if (ACPI_FAILURE (Status))
320 return_ACPI_STATUS (Status);
323 if (SourceDesc == ActualSrcDesc)
326 * No conversion was performed. Return the SourceDesc as the
329 *NewDesc = SourceDesc;
330 return_ACPI_STATUS (AE_OK);
335 * We now have two objects of identical types, and we can perform a
336 * copy of the *value* of the source object.
338 switch (ACPI_GET_OBJECT_TYPE (DestDesc))
340 case ACPI_TYPE_INTEGER:
342 DestDesc->Integer.Value = ActualSrcDesc->Integer.Value;
344 /* Truncate value if we are executing from a 32-bit ACPI table */
346 AcpiExTruncateFor32bitTable (DestDesc);
349 case ACPI_TYPE_STRING:
351 Status = AcpiExStoreStringToString (ActualSrcDesc, DestDesc);
354 case ACPI_TYPE_BUFFER:
357 * Note: There is different store behavior depending on the original
360 Status = AcpiExStoreBufferToBuffer (ActualSrcDesc, DestDesc);
363 case ACPI_TYPE_PACKAGE:
365 Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, &DestDesc,
371 * All other types come here.
373 ACPI_DEBUG_PRINT ((ACPI_DB_WARN, "Store into type %s not implemented\n",
374 AcpiUtGetObjectTypeName (DestDesc)));
376 Status = AE_NOT_IMPLEMENTED;
380 if (ActualSrcDesc != SourceDesc)
382 /* Delete the intermediate (temporary) source object */
384 AcpiUtRemoveReference (ActualSrcDesc);
388 return_ACPI_STATUS (Status);