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 - 2018, 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 * Alternatively, you may choose to be licensed under the terms of the 118 * following license: 119 * 120 * Redistribution and use in source and binary forms, with or without 121 * modification, are permitted provided that the following conditions 122 * are met: 123 * 1. Redistributions of source code must retain the above copyright 124 * notice, this list of conditions, and the following disclaimer, 125 * without modification. 126 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 127 * substantially similar to the "NO WARRANTY" disclaimer below 128 * ("Disclaimer") and any redistribution must be conditioned upon 129 * including a substantially similar Disclaimer requirement for further 130 * binary redistribution. 131 * 3. Neither the names of the above-listed copyright holders nor the names 132 * of any contributors may be used to endorse or promote products derived 133 * from this software without specific prior written permission. 134 * 135 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 136 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 137 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 138 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 139 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 140 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 141 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 142 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 143 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 144 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 145 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 146 * 147 * Alternatively, you may choose to be licensed under the terms of the 148 * GNU General Public License ("GPL") version 2 as published by the Free 149 * Software Foundation. 150 * 151 *****************************************************************************/ 152 153 #include "acpi.h" 154 #include "accommon.h" 155 #include "acinterp.h" 156 #include "acparser.h" 157 #include "amlcode.h" 158 159 160 #define _COMPONENT ACPI_EXECUTER 161 ACPI_MODULE_NAME ("exoparg6") 162 163 164 /*! 165 * Naming convention for AML interpreter execution routines. 166 * 167 * The routines that begin execution of AML opcodes are named with a common 168 * convention based upon the number of arguments, the number of target operands, 169 * and whether or not a value is returned: 170 * 171 * AcpiExOpcode_xA_yT_zR 172 * 173 * Where: 174 * 175 * xA - ARGUMENTS: The number of arguments (input operands) that are 176 * required for this opcode type (1 through 6 args). 177 * yT - TARGETS: The number of targets (output operands) that are required 178 * for this opcode type (0, 1, or 2 targets). 179 * zR - RETURN VALUE: Indicates whether this opcode type returns a value 180 * as the function return (0 or 1). 181 * 182 * The AcpiExOpcode* functions are called via the Dispatcher component with 183 * fully resolved operands. 184 !*/ 185 186 /* Local prototypes */ 187 188 static BOOLEAN 189 AcpiExDoMatch ( 190 UINT32 MatchOp, 191 ACPI_OPERAND_OBJECT *PackageObj, 192 ACPI_OPERAND_OBJECT *MatchObj); 193 194 195 /******************************************************************************* 196 * 197 * FUNCTION: AcpiExDoMatch 198 * 199 * PARAMETERS: MatchOp - The AML match operand 200 * PackageObj - Object from the target package 201 * MatchObj - Object to be matched 202 * 203 * RETURN: TRUE if the match is successful, FALSE otherwise 204 * 205 * DESCRIPTION: Implements the low-level match for the ASL Match operator. 206 * Package elements will be implicitly converted to the type of 207 * the match object (Integer/Buffer/String). 208 * 209 ******************************************************************************/ 210 211 static BOOLEAN 212 AcpiExDoMatch ( 213 UINT32 MatchOp, 214 ACPI_OPERAND_OBJECT *PackageObj, 215 ACPI_OPERAND_OBJECT *MatchObj) 216 { 217 BOOLEAN LogicalResult = TRUE; 218 ACPI_STATUS Status; 219 220 221 /* 222 * Note: Since the PackageObj/MatchObj ordering is opposite to that of 223 * the standard logical operators, we have to reverse them when we call 224 * DoLogicalOp in order to make the implicit conversion rules work 225 * correctly. However, this means we have to flip the entire equation 226 * also. A bit ugly perhaps, but overall, better than fussing the 227 * parameters around at runtime, over and over again. 228 * 229 * Below, P[i] refers to the package element, M refers to the Match object. 230 */ 231 switch (MatchOp) 232 { 233 case MATCH_MTR: 234 235 /* Always true */ 236 237 break; 238 239 case MATCH_MEQ: 240 /* 241 * True if equal: (P[i] == M) 242 * Change to: (M == P[i]) 243 */ 244 Status = AcpiExDoLogicalOp ( 245 AML_LOGICAL_EQUAL_OP, MatchObj, PackageObj, &LogicalResult); 246 if (ACPI_FAILURE (Status)) 247 { 248 return (FALSE); 249 } 250 break; 251 252 case MATCH_MLE: 253 /* 254 * True if less than or equal: (P[i] <= M) (P[i] NotGreater than M) 255 * Change to: (M >= P[i]) (M NotLess than P[i]) 256 */ 257 Status = AcpiExDoLogicalOp ( 258 AML_LOGICAL_LESS_OP, MatchObj, PackageObj, &LogicalResult); 259 if (ACPI_FAILURE (Status)) 260 { 261 return (FALSE); 262 } 263 LogicalResult = (BOOLEAN) !LogicalResult; 264 break; 265 266 case MATCH_MLT: 267 /* 268 * True if less than: (P[i] < M) 269 * Change to: (M > P[i]) 270 */ 271 Status = AcpiExDoLogicalOp ( 272 AML_LOGICAL_GREATER_OP, MatchObj, PackageObj, &LogicalResult); 273 if (ACPI_FAILURE (Status)) 274 { 275 return (FALSE); 276 } 277 break; 278 279 case MATCH_MGE: 280 /* 281 * True if greater than or equal: (P[i] >= M) (P[i] NotLess than M) 282 * Change to: (M <= P[i]) (M NotGreater than P[i]) 283 */ 284 Status = AcpiExDoLogicalOp ( 285 AML_LOGICAL_GREATER_OP, MatchObj, PackageObj, &LogicalResult); 286 if (ACPI_FAILURE (Status)) 287 { 288 return (FALSE); 289 } 290 LogicalResult = (BOOLEAN)!LogicalResult; 291 break; 292 293 case MATCH_MGT: 294 /* 295 * True if greater than: (P[i] > M) 296 * Change to: (M < P[i]) 297 */ 298 Status = AcpiExDoLogicalOp ( 299 AML_LOGICAL_LESS_OP, MatchObj, PackageObj, &LogicalResult); 300 if (ACPI_FAILURE (Status)) 301 { 302 return (FALSE); 303 } 304 break; 305 306 default: 307 308 /* Undefined */ 309 310 return (FALSE); 311 } 312 313 return (LogicalResult); 314 } 315 316 317 /******************************************************************************* 318 * 319 * FUNCTION: AcpiExOpcode_6A_0T_1R 320 * 321 * PARAMETERS: WalkState - Current walk state 322 * 323 * RETURN: Status 324 * 325 * DESCRIPTION: Execute opcode with 6 arguments, no target, and a return value 326 * 327 ******************************************************************************/ 328 329 ACPI_STATUS 330 AcpiExOpcode_6A_0T_1R ( 331 ACPI_WALK_STATE *WalkState) 332 { 333 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; 334 ACPI_OPERAND_OBJECT *ReturnDesc = NULL; 335 ACPI_STATUS Status = AE_OK; 336 UINT64 Index; 337 ACPI_OPERAND_OBJECT *ThisElement; 338 339 340 ACPI_FUNCTION_TRACE_STR (ExOpcode_6A_0T_1R, 341 AcpiPsGetOpcodeName (WalkState->Opcode)); 342 343 344 switch (WalkState->Opcode) 345 { 346 case AML_MATCH_OP: 347 /* 348 * Match (SearchPkg[0], MatchOp1[1], MatchObj1[2], 349 * MatchOp2[3], MatchObj2[4], StartIndex[5]) 350 */ 351 352 /* Validate both Match Term Operators (MTR, MEQ, etc.) */ 353 354 if ((Operand[1]->Integer.Value > MAX_MATCH_OPERATOR) || 355 (Operand[3]->Integer.Value > MAX_MATCH_OPERATOR)) 356 { 357 ACPI_ERROR ((AE_INFO, "Match operator out of range")); 358 Status = AE_AML_OPERAND_VALUE; 359 goto Cleanup; 360 } 361 362 /* Get the package StartIndex, validate against the package length */ 363 364 Index = Operand[5]->Integer.Value; 365 if (Index >= Operand[0]->Package.Count) 366 { 367 ACPI_ERROR ((AE_INFO, 368 "Index (0x%8.8X%8.8X) beyond package end (0x%X)", 369 ACPI_FORMAT_UINT64 (Index), Operand[0]->Package.Count)); 370 Status = AE_AML_PACKAGE_LIMIT; 371 goto Cleanup; 372 } 373 374 /* Create an integer for the return value */ 375 /* Default return value is ACPI_UINT64_MAX if no match found */ 376 377 ReturnDesc = AcpiUtCreateIntegerObject (ACPI_UINT64_MAX); 378 if (!ReturnDesc) 379 { 380 Status = AE_NO_MEMORY; 381 goto Cleanup; 382 383 } 384 385 /* 386 * Examine each element until a match is found. Both match conditions 387 * must be satisfied for a match to occur. Within the loop, 388 * "continue" signifies that the current element does not match 389 * and the next should be examined. 390 * 391 * Upon finding a match, the loop will terminate via "break" at 392 * the bottom. If it terminates "normally", MatchValue will be 393 * ACPI_UINT64_MAX (Ones) (its initial value) indicating that no 394 * match was found. 395 */ 396 for ( ; Index < Operand[0]->Package.Count; Index++) 397 { 398 /* Get the current package element */ 399 400 ThisElement = Operand[0]->Package.Elements[Index]; 401 402 /* Treat any uninitialized (NULL) elements as non-matching */ 403 404 if (!ThisElement) 405 { 406 continue; 407 } 408 409 /* 410 * Both match conditions must be satisfied. Execution of a continue 411 * (proceed to next iteration of enclosing for loop) signifies a 412 * non-match. 413 */ 414 if (!AcpiExDoMatch ((UINT32) Operand[1]->Integer.Value, 415 ThisElement, Operand[2])) 416 { 417 continue; 418 } 419 420 if (!AcpiExDoMatch ((UINT32) Operand[3]->Integer.Value, 421 ThisElement, Operand[4])) 422 { 423 continue; 424 } 425 426 /* Match found: Index is the return value */ 427 428 ReturnDesc->Integer.Value = Index; 429 break; 430 } 431 break; 432 433 case AML_LOAD_TABLE_OP: 434 435 Status = AcpiExLoadTableOp (WalkState, &ReturnDesc); 436 break; 437 438 default: 439 440 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", 441 WalkState->Opcode)); 442 443 Status = AE_AML_BAD_OPCODE; 444 goto Cleanup; 445 } 446 447 448 Cleanup: 449 450 /* Delete return object on error */ 451 452 if (ACPI_FAILURE (Status)) 453 { 454 AcpiUtRemoveReference (ReturnDesc); 455 } 456 457 /* Save return object on success */ 458 459 else 460 { 461 WalkState->ResultObj = ReturnDesc; 462 } 463 464 return_ACPI_STATUS (Status); 465 } 466