exstoren.c revision 77424
1 2/****************************************************************************** 3 * 4 * Module Name: exstoren - AML Interpreter object store support, 5 * Store to Node (namespace object) 6 * $Revision: 38 $ 7 * 8 *****************************************************************************/ 9 10/****************************************************************************** 11 * 12 * 1. Copyright Notice 13 * 14 * Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp. 15 * All rights reserved. 16 * 17 * 2. License 18 * 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 22 * property rights. 23 * 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 30 * 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; 39 * 40 * The above copyright and patent license is granted only if the following 41 * conditions are met: 42 * 43 * 3. Conditions 44 * 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. 56 * 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 67 * make. 68 * 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 73 * distribution. 74 * 75 * 3.4. Intel retains all right, title, and interest in and to the Original 76 * Intel Code. 77 * 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. 82 * 83 * 4. Disclaimer and Export Compliance 84 * 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 91 * PARTICULAR PURPOSE. 92 * 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 100 * LIMITED REMEDY. 101 * 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. 116 * 117 *****************************************************************************/ 118 119#define __EXSTOREN_C__ 120 121#include "acpi.h" 122#include "acparser.h" 123#include "acdispat.h" 124#include "acinterp.h" 125#include "amlcode.h" 126#include "acnamesp.h" 127#include "actables.h" 128 129 130#define _COMPONENT ACPI_EXECUTER 131 MODULE_NAME ("exstoren") 132 133 134/******************************************************************************* 135 * 136 * FUNCTION: AcpiExResolveObject 137 * 138 * PARAMETERS: SourceDescPtr - Pointer to the source object 139 * TargetType - Current type of the target 140 * WalkState - Current walk state 141 * 142 * RETURN: Status, resolved object in SourceDescPtr. 143 * 144 * DESCRIPTION: Resolve an object. If the object is a reference, dereference 145 * it and return the actual object in the SourceDescPtr. 146 * 147 ******************************************************************************/ 148 149ACPI_STATUS 150AcpiExResolveObject ( 151 ACPI_OPERAND_OBJECT **SourceDescPtr, 152 ACPI_OBJECT_TYPE8 TargetType, 153 ACPI_WALK_STATE *WalkState) 154{ 155 ACPI_OPERAND_OBJECT *SourceDesc = *SourceDescPtr; 156 ACPI_STATUS Status = AE_OK; 157 158 159 FUNCTION_TRACE ("ExResolveObject"); 160 161 162 /* 163 * Ensure we have a Source that can be stored in the target 164 */ 165 switch (TargetType) 166 { 167 168 /* This case handles the "interchangeable" types Integer, String, and Buffer. */ 169 170 /* 171 * These cases all require only Integers or values that 172 * can be converted to Integers (Strings or Buffers) 173 */ 174 case ACPI_TYPE_BUFFER_FIELD: 175 case INTERNAL_TYPE_REGION_FIELD: 176 case INTERNAL_TYPE_BANK_FIELD: 177 case INTERNAL_TYPE_INDEX_FIELD: 178 179 /* 180 * Stores into a Field/Region or into a Buffer/String 181 * are all essentially the same. 182 */ 183 case ACPI_TYPE_INTEGER: 184 case ACPI_TYPE_STRING: 185 case ACPI_TYPE_BUFFER: 186 187 188 /* TBD: FIX - check for source==REF, resolve, then check type */ 189 190 /* 191 * If SourceDesc is not a valid type, try to resolve it to one. 192 */ 193 if ((SourceDesc->Common.Type != ACPI_TYPE_INTEGER) && 194 (SourceDesc->Common.Type != ACPI_TYPE_BUFFER) && 195 (SourceDesc->Common.Type != ACPI_TYPE_STRING)) 196 { 197 /* 198 * Initially not a valid type, convert 199 */ 200 Status = AcpiExResolveToValue (SourceDescPtr, WalkState); 201 if (ACPI_SUCCESS (Status) && 202 (SourceDesc->Common.Type != ACPI_TYPE_INTEGER) && 203 (SourceDesc->Common.Type != ACPI_TYPE_BUFFER) && 204 (SourceDesc->Common.Type != ACPI_TYPE_STRING)) 205 { 206 /* 207 * Conversion successful but still not a valid type 208 */ 209 DEBUG_PRINTP (ACPI_ERROR, 210 ("Cannot assign type %s to %s (must be type Int/Str/Buf)\n", 211 AcpiUtGetTypeName ((*SourceDescPtr)->Common.Type), 212 AcpiUtGetTypeName (TargetType))); 213 Status = AE_AML_OPERAND_TYPE; 214 } 215 } 216 break; 217 218 219 case INTERNAL_TYPE_ALIAS: 220 221 /* 222 * Aliases are resolved by AcpiExPrepOperands 223 */ 224 DEBUG_PRINTP (ACPI_WARN, ("Store into Alias - should never happen\n")); 225 Status = AE_AML_INTERNAL; 226 break; 227 228 229 case ACPI_TYPE_PACKAGE: 230 default: 231 232 /* 233 * All other types than Alias and the various Fields come here, 234 * including the untyped case - ACPI_TYPE_ANY. 235 */ 236 break; 237 } 238 239 return_ACPI_STATUS (Status); 240} 241 242 243/******************************************************************************* 244 * 245 * FUNCTION: AcpiExStoreObject 246 * 247 * PARAMETERS: SourceDesc - Object to store 248 * TargetType - Current type of the target 249 * TargetDescPtr - Pointer to the target 250 * WalkState - Current walk state 251 * 252 * RETURN: Status 253 * 254 * DESCRIPTION: "Store" an object to another object. This may include 255 * converting the source type to the target type (implicit 256 * conversion), and a copy of the value of the source to 257 * the target. 258 * 259 ******************************************************************************/ 260 261ACPI_STATUS 262AcpiExStoreObject ( 263 ACPI_OPERAND_OBJECT *SourceDesc, 264 ACPI_OBJECT_TYPE8 TargetType, 265 ACPI_OPERAND_OBJECT **TargetDescPtr, 266 ACPI_WALK_STATE *WalkState) 267{ 268 ACPI_OPERAND_OBJECT *TargetDesc = *TargetDescPtr; 269 ACPI_STATUS Status = AE_OK; 270 271 272 FUNCTION_TRACE ("ExStoreObject"); 273 274 275 /* 276 * Perform the "implicit conversion" of the source to the current type 277 * of the target - As per the ACPI specification. 278 * 279 * If no conversion performed, SourceDesc is left alone, otherwise it 280 * is updated with a new object. 281 */ 282 Status = AcpiExConvertToTargetType (TargetType, &SourceDesc, WalkState); 283 if (ACPI_FAILURE (Status)) 284 { 285 return_ACPI_STATUS (Status); 286 } 287 288 /* 289 * We now have two objects of identical types, and we can perform a 290 * copy of the *value* of the source object. 291 */ 292 switch (TargetType) 293 { 294 case ACPI_TYPE_ANY: 295 case INTERNAL_TYPE_DEF_ANY: 296 297 /* 298 * The target namespace node is uninitialized (has no target object), 299 * and will take on the type of the source object 300 */ 301 302 *TargetDescPtr = SourceDesc; 303 break; 304 305 306 case ACPI_TYPE_INTEGER: 307 308 TargetDesc->Integer.Value = SourceDesc->Integer.Value; 309 310 /* Truncate value if we are executing from a 32-bit ACPI table */ 311 312 AcpiExTruncateFor32bitTable (TargetDesc, WalkState); 313 break; 314 315 case ACPI_TYPE_STRING: 316 317 Status = AcpiExCopyStringToString (SourceDesc, TargetDesc); 318 break; 319 320 321 case ACPI_TYPE_BUFFER: 322 323 Status = AcpiExCopyBufferToBuffer (SourceDesc, TargetDesc); 324 break; 325 326 327 case ACPI_TYPE_PACKAGE: 328 329 /* 330 * TBD: [Unhandled] Not real sure what to do here 331 */ 332 Status = AE_NOT_IMPLEMENTED; 333 break; 334 335 336 default: 337 338 /* 339 * All other types come here. 340 */ 341 DEBUG_PRINTP (ACPI_WARN, ("Store into type %s not implemented\n", 342 AcpiUtGetTypeName (TargetType))); 343 344 Status = AE_NOT_IMPLEMENTED; 345 break; 346 } 347 348 349 return_ACPI_STATUS (Status); 350} 351 352 353