1 /****************************************************************************** 2 * 3 * Module Name: exoparg6 - AML execution - opcodes with 6 arguments 4 * 5 *****************************************************************************/ 6 7 /****************************************************************************** 8 * 9 * 1. Copyright Notice 10 * 11 * Some or all of this work - Copyright (c) 1999 - 2012, 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 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 #define __EXOPARG6_C__ 118 119 #include "acpi.h" 120 #include "accommon.h" 121 #include "acinterp.h" 122 #include "acparser.h" 123 #include "amlcode.h" 124 125 126 #define _COMPONENT ACPI_EXECUTER 127 ACPI_MODULE_NAME ("exoparg6") 128 129 130 /*! 131 * Naming convention for AML interpreter execution routines. 132 * 133 * The routines that begin execution of AML opcodes are named with a common 134 * convention based upon the number of arguments, the number of target operands, 135 * and whether or not a value is returned: 136 * 137 * AcpiExOpcode_xA_yT_zR 138 * 139 * Where: 140 * 141 * xA - ARGUMENTS: The number of arguments (input operands) that are 142 * required for this opcode type (1 through 6 args). 143 * yT - TARGETS: The number of targets (output operands) that are required 144 * for this opcode type (0, 1, or 2 targets). 145 * zR - RETURN VALUE: Indicates whether this opcode type returns a value 146 * as the function return (0 or 1). 147 * 148 * The AcpiExOpcode* functions are called via the Dispatcher component with 149 * fully resolved operands. 150 !*/ 151 152 /* Local prototypes */ 153 154 static BOOLEAN 155 AcpiExDoMatch ( 156 UINT32 MatchOp, 157 ACPI_OPERAND_OBJECT *PackageObj, 158 ACPI_OPERAND_OBJECT *MatchObj); 159 160 161 /******************************************************************************* 162 * 163 * FUNCTION: AcpiExDoMatch 164 * 165 * PARAMETERS: MatchOp - The AML match operand 166 * PackageObj - Object from the target package 167 * MatchObj - Object to be matched 168 * 169 * RETURN: TRUE if the match is successful, FALSE otherwise 170 * 171 * DESCRIPTION: Implements the low-level match for the ASL Match operator. 172 * Package elements will be implicitly converted to the type of 173 * the match object (Integer/Buffer/String). 174 * 175 ******************************************************************************/ 176 177 static BOOLEAN 178 AcpiExDoMatch ( 179 UINT32 MatchOp, 180 ACPI_OPERAND_OBJECT *PackageObj, 181 ACPI_OPERAND_OBJECT *MatchObj) 182 { 183 BOOLEAN LogicalResult = TRUE; 184 ACPI_STATUS Status; 185 186 187 /* 188 * Note: Since the PackageObj/MatchObj ordering is opposite to that of 189 * the standard logical operators, we have to reverse them when we call 190 * DoLogicalOp in order to make the implicit conversion rules work 191 * correctly. However, this means we have to flip the entire equation 192 * also. A bit ugly perhaps, but overall, better than fussing the 193 * parameters around at runtime, over and over again. 194 * 195 * Below, P[i] refers to the package element, M refers to the Match object. 196 */ 197 switch (MatchOp) 198 { 199 case MATCH_MTR: 200 201 /* Always true */ 202 203 break; 204 205 case MATCH_MEQ: 206 207 /* 208 * True if equal: (P[i] == M) 209 * Change to: (M == P[i]) 210 */ 211 Status = AcpiExDoLogicalOp (AML_LEQUAL_OP, MatchObj, PackageObj, 212 &LogicalResult); 213 if (ACPI_FAILURE (Status)) 214 { 215 return (FALSE); 216 } 217 break; 218 219 case MATCH_MLE: 220 221 /* 222 * True if less than or equal: (P[i] <= M) (P[i] NotGreater than M) 223 * Change to: (M >= P[i]) (M NotLess than P[i]) 224 */ 225 Status = AcpiExDoLogicalOp (AML_LLESS_OP, MatchObj, PackageObj, 226 &LogicalResult); 227 if (ACPI_FAILURE (Status)) 228 { 229 return (FALSE); 230 } 231 LogicalResult = (BOOLEAN) !LogicalResult; 232 break; 233 234 case MATCH_MLT: 235 236 /* 237 * True if less than: (P[i] < M) 238 * Change to: (M > P[i]) 239 */ 240 Status = AcpiExDoLogicalOp (AML_LGREATER_OP, MatchObj, PackageObj, 241 &LogicalResult); 242 if (ACPI_FAILURE (Status)) 243 { 244 return (FALSE); 245 } 246 break; 247 248 case MATCH_MGE: 249 250 /* 251 * True if greater than or equal: (P[i] >= M) (P[i] NotLess than M) 252 * Change to: (M <= P[i]) (M NotGreater than P[i]) 253 */ 254 Status = AcpiExDoLogicalOp (AML_LGREATER_OP, MatchObj, PackageObj, 255 &LogicalResult); 256 if (ACPI_FAILURE (Status)) 257 { 258 return (FALSE); 259 } 260 LogicalResult = (BOOLEAN)!LogicalResult; 261 break; 262 263 case MATCH_MGT: 264 265 /* 266 * True if greater than: (P[i] > M) 267 * Change to: (M < P[i]) 268 */ 269 Status = AcpiExDoLogicalOp (AML_LLESS_OP, MatchObj, PackageObj, 270 &LogicalResult); 271 if (ACPI_FAILURE (Status)) 272 { 273 return (FALSE); 274 } 275 break; 276 277 default: 278 279 /* Undefined */ 280 281 return (FALSE); 282 } 283 284 return (LogicalResult); 285 } 286 287 288 /******************************************************************************* 289 * 290 * FUNCTION: AcpiExOpcode_6A_0T_1R 291 * 292 * PARAMETERS: WalkState - Current walk state 293 * 294 * RETURN: Status 295 * 296 * DESCRIPTION: Execute opcode with 6 arguments, no target, and a return value 297 * 298 ******************************************************************************/ 299 300 ACPI_STATUS 301 AcpiExOpcode_6A_0T_1R ( 302 ACPI_WALK_STATE *WalkState) 303 { 304 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 305 ACPI_OPERAND_OBJECT *ReturnDesc = NULL; 306 ACPI_STATUS Status = AE_OK; 307 UINT64 Index; 308 ACPI_OPERAND_OBJECT *ThisElement; 309 310 311 ACPI_FUNCTION_TRACE_STR (ExOpcode_6A_0T_1R, 312 AcpiPsGetOpcodeName (WalkState->Opcode)); 313 314 315 switch (WalkState->Opcode) 316 { 317 case AML_MATCH_OP: 318 /* 319 * Match (SearchPkg[0], MatchOp1[1], MatchObj1[2], 320 * MatchOp2[3], MatchObj2[4], StartIndex[5]) 321 */ 322 323 /* Validate both Match Term Operators (MTR, MEQ, etc.) */ 324 325 if ((Operand[1]->Integer.Value > MAX_MATCH_OPERATOR) || 326 (Operand[3]->Integer.Value > MAX_MATCH_OPERATOR)) 327 { 328 ACPI_ERROR ((AE_INFO, "Match operator out of range")); 329 Status = AE_AML_OPERAND_VALUE; 330 goto Cleanup; 331 } 332 333 /* Get the package StartIndex, validate against the package length */ 334 335 Index = Operand[5]->Integer.Value; 336 if (Index >= Operand[0]->Package.Count) 337 { 338 ACPI_ERROR ((AE_INFO, 339 "Index (0x%8.8X%8.8X) beyond package end (0x%X)", 340 ACPI_FORMAT_UINT64 (Index), Operand[0]->Package.Count)); 341 Status = AE_AML_PACKAGE_LIMIT; 342 goto Cleanup; 343 } 344 345 /* Create an integer for the return value */ 346 /* Default return value is ACPI_UINT64_MAX if no match found */ 347 348 ReturnDesc = AcpiUtCreateIntegerObject (ACPI_UINT64_MAX); 349 if (!ReturnDesc) 350 { 351 Status = AE_NO_MEMORY; 352 goto Cleanup; 353 354 } 355 356 /* 357 * Examine each element until a match is found. Both match conditions 358 * must be satisfied for a match to occur. Within the loop, 359 * "continue" signifies that the current element does not match 360 * and the next should be examined. 361 * 362 * Upon finding a match, the loop will terminate via "break" at 363 * the bottom. If it terminates "normally", MatchValue will be 364 * ACPI_UINT64_MAX (Ones) (its initial value) indicating that no 365 * match was found. 366 */ 367 for ( ; Index < Operand[0]->Package.Count; Index++) 368 { 369 /* Get the current package element */ 370 371 ThisElement = Operand[0]->Package.Elements[Index]; 372 373 /* Treat any uninitialized (NULL) elements as non-matching */ 374 375 if (!ThisElement) 376 { 377 continue; 378 } 379 380 /* 381 * Both match conditions must be satisfied. Execution of a continue 382 * (proceed to next iteration of enclosing for loop) signifies a 383 * non-match. 384 */ 385 if (!AcpiExDoMatch ((UINT32) Operand[1]->Integer.Value, 386 ThisElement, Operand[2])) 387 { 388 continue; 389 } 390 391 if (!AcpiExDoMatch ((UINT32) Operand[3]->Integer.Value, 392 ThisElement, Operand[4])) 393 { 394 continue; 395 } 396 397 /* Match found: Index is the return value */ 398 399 ReturnDesc->Integer.Value = Index; 400 break; 401 } 402 break; 403 404 405 case AML_LOAD_TABLE_OP: 406 407 Status = AcpiExLoadTableOp (WalkState, &ReturnDesc); 408 break; 409 410 411 default: 412 413 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", 414 WalkState->Opcode)); 415 Status = AE_AML_BAD_OPCODE; 416 goto Cleanup; 417 } 418 419 420 Cleanup: 421 422 /* Delete return object on error */ 423 424 if (ACPI_FAILURE (Status)) 425 { 426 AcpiUtRemoveReference (ReturnDesc); 427 } 428 429 /* Save return object on success */ 430 431 else 432 { 433 WalkState->ResultObj = ReturnDesc; 434 } 435 436 return_ACPI_STATUS (Status); 437 } 438