/****************************************************************************** * * Module Name: exoparg6 - AML execution - opcodes with 6 arguments * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp. * All rights reserved. * * 2. License * * 2.1. This is your license from Intel Corp. under its intellectual property * rights. You may have additional license terms from the party that provided * you this software, covering your right to use that party's intellectual * property rights. * * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a * copy of the source code appearing in this file ("Covered Code") an * irrevocable, perpetual, worldwide license under Intel's copyrights in the * base code distributed originally by Intel ("Original Intel Code") to copy, * make derivatives, distribute, use and display any portion of the Covered * Code in any form, with the right to sublicense such rights; and * * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent * license (with the right to sublicense), under only those claims of Intel * patents that are infringed by the Original Intel Code, to make, use, sell, * offer to sell, and import the Covered Code and derivative works thereof * solely to the minimum extent necessary to exercise the above copyright * license, and in no event shall the patent license extend to any additions * to or modifications of the Original Intel Code. No other license or right * is granted directly or by implication, estoppel or otherwise; * * The above copyright and patent license is granted only if the following * conditions are met: * * 3. Conditions * * 3.1. Redistribution of Source with Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification with rights to further distribute source must include * the above Copyright Notice, the above License, this list of Conditions, * and the following Disclaimer and Export Compliance provision. In addition, * Licensee must cause all Covered Code to which Licensee contributes to * contain a file documenting the changes Licensee made to create that Covered * Code and the date of any change. Licensee must include in that file the * documentation of any changes made by any predecessor Licensee. Licensee * must include a prominent statement that the modification is derived, * directly or indirectly, from Original Intel Code. * * 3.2. Redistribution of Source with no Rights to Further Distribute Source. * Redistribution of source code of any substantial portion of the Covered * Code or modification without rights to further distribute source must * include the following Disclaimer and Export Compliance provision in the * documentation and/or other materials provided with distribution. In * addition, Licensee may not authorize further sublicense of source of any * portion of the Covered Code, and must include terms to the effect that the * license from Licensee to its licensee is limited to the intellectual * property embodied in the software Licensee provides to its licensee, and * not to intellectual property embodied in modifications its licensee may * make. * * 3.3. Redistribution of Executable. Redistribution in executable form of any * substantial portion of the Covered Code or modification must reproduce the * above Copyright Notice, and the following Disclaimer and Export Compliance * provision in the documentation and/or other materials provided with the * distribution. * * 3.4. Intel retains all right, title, and interest in and to the Original * Intel Code. * * 3.5. Neither the name Intel nor any other trademark owned or controlled by * Intel shall be used in advertising or otherwise to promote the sale, use or * other dealings in products derived from or relating to the Covered Code * without prior written authorization from Intel. * * 4. Disclaimer and Export Compliance * * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A * PARTICULAR PURPOSE. * * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY * LIMITED REMEDY. * * 4.3. Licensee shall not export, either directly or indirectly, any of this * software or system incorporating such software without first obtaining any * required license or other approval from the U. S. Department of Commerce or * any other agency or department of the United States Government. In the * event Licensee exports any such software from the United States or * re-exports any such software from a foreign destination, Licensee shall * ensure that the distribution and export/re-export of the software is in * compliance with all laws, regulations, orders, or other restrictions of the * U.S. Export Administration Regulations. Licensee agrees that neither it nor * any of its subsidiaries will export/re-export any technical data, process, * software, or service, directly or indirectly, to any country for which the * United States government or any agency thereof requires an export license, * other governmental approval, or letter of assurance, without first obtaining * such license, approval or letter. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include "acpi.h" #include "accommon.h" #include "acinterp.h" #include "acparser.h" #include "amlcode.h" #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("exoparg6") /*! * Naming convention for AML interpreter execution routines. * * The routines that begin execution of AML opcodes are named with a common * convention based upon the number of arguments, the number of target operands, * and whether or not a value is returned: * * AcpiExOpcode_xA_yT_zR * * Where: * * xA - ARGUMENTS: The number of arguments (input operands) that are * required for this opcode type (1 through 6 args). * yT - TARGETS: The number of targets (output operands) that are required * for this opcode type (0, 1, or 2 targets). * zR - RETURN VALUE: Indicates whether this opcode type returns a value * as the function return (0 or 1). * * The AcpiExOpcode* functions are called via the Dispatcher component with * fully resolved operands. !*/ /* Local prototypes */ static BOOLEAN AcpiExDoMatch ( UINT32 MatchOp, ACPI_OPERAND_OBJECT *PackageObj, ACPI_OPERAND_OBJECT *MatchObj); /******************************************************************************* * * FUNCTION: AcpiExDoMatch * * PARAMETERS: MatchOp - The AML match operand * PackageObj - Object from the target package * MatchObj - Object to be matched * * RETURN: TRUE if the match is successful, FALSE otherwise * * DESCRIPTION: Implements the low-level match for the ASL Match operator. * Package elements will be implicitly converted to the type of * the match object (Integer/Buffer/String). * ******************************************************************************/ static BOOLEAN AcpiExDoMatch ( UINT32 MatchOp, ACPI_OPERAND_OBJECT *PackageObj, ACPI_OPERAND_OBJECT *MatchObj) { BOOLEAN LogicalResult = TRUE; ACPI_STATUS Status; /* * Note: Since the PackageObj/MatchObj ordering is opposite to that of * the standard logical operators, we have to reverse them when we call * DoLogicalOp in order to make the implicit conversion rules work * correctly. However, this means we have to flip the entire equation * also. A bit ugly perhaps, but overall, better than fussing the * parameters around at runtime, over and over again. * * Below, P[i] refers to the package element, M refers to the Match object. */ switch (MatchOp) { case MATCH_MTR: /* Always true */ break; case MATCH_MEQ: /* * True if equal: (P[i] == M) * Change to: (M == P[i]) */ Status = AcpiExDoLogicalOp ( AML_LOGICAL_EQUAL_OP, MatchObj, PackageObj, &LogicalResult); if (ACPI_FAILURE (Status)) { return (FALSE); } break; case MATCH_MLE: /* * True if less than or equal: (P[i] <= M) (P[i] NotGreater than M) * Change to: (M >= P[i]) (M NotLess than P[i]) */ Status = AcpiExDoLogicalOp ( AML_LOGICAL_LESS_OP, MatchObj, PackageObj, &LogicalResult); if (ACPI_FAILURE (Status)) { return (FALSE); } LogicalResult = (BOOLEAN) !LogicalResult; break; case MATCH_MLT: /* * True if less than: (P[i] < M) * Change to: (M > P[i]) */ Status = AcpiExDoLogicalOp ( AML_LOGICAL_GREATER_OP, MatchObj, PackageObj, &LogicalResult); if (ACPI_FAILURE (Status)) { return (FALSE); } break; case MATCH_MGE: /* * True if greater than or equal: (P[i] >= M) (P[i] NotLess than M) * Change to: (M <= P[i]) (M NotGreater than P[i]) */ Status = AcpiExDoLogicalOp ( AML_LOGICAL_GREATER_OP, MatchObj, PackageObj, &LogicalResult); if (ACPI_FAILURE (Status)) { return (FALSE); } LogicalResult = (BOOLEAN)!LogicalResult; break; case MATCH_MGT: /* * True if greater than: (P[i] > M) * Change to: (M < P[i]) */ Status = AcpiExDoLogicalOp ( AML_LOGICAL_LESS_OP, MatchObj, PackageObj, &LogicalResult); if (ACPI_FAILURE (Status)) { return (FALSE); } break; default: /* Undefined */ return (FALSE); } return (LogicalResult); } /******************************************************************************* * * FUNCTION: AcpiExOpcode_6A_0T_1R * * PARAMETERS: WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Execute opcode with 6 arguments, no target, and a return value * ******************************************************************************/ ACPI_STATUS AcpiExOpcode_6A_0T_1R ( ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0]; ACPI_OPERAND_OBJECT *ReturnDesc = NULL; ACPI_STATUS Status = AE_OK; UINT64 Index; ACPI_OPERAND_OBJECT *ThisElement; ACPI_FUNCTION_TRACE_STR (ExOpcode_6A_0T_1R, AcpiPsGetOpcodeName (WalkState->Opcode)); switch (WalkState->Opcode) { case AML_MATCH_OP: /* * Match (SearchPkg[0], MatchOp1[1], MatchObj1[2], * MatchOp2[3], MatchObj2[4], StartIndex[5]) */ /* Validate both Match Term Operators (MTR, MEQ, etc.) */ if ((Operand[1]->Integer.Value > MAX_MATCH_OPERATOR) || (Operand[3]->Integer.Value > MAX_MATCH_OPERATOR)) { ACPI_ERROR ((AE_INFO, "Match operator out of range")); Status = AE_AML_OPERAND_VALUE; goto Cleanup; } /* Get the package StartIndex, validate against the package length */ Index = Operand[5]->Integer.Value; if (Index >= Operand[0]->Package.Count) { ACPI_ERROR ((AE_INFO, "Index (0x%8.8X%8.8X) beyond package end (0x%X)", ACPI_FORMAT_UINT64 (Index), Operand[0]->Package.Count)); Status = AE_AML_PACKAGE_LIMIT; goto Cleanup; } /* Create an integer for the return value */ /* Default return value is ACPI_UINT64_MAX if no match found */ ReturnDesc = AcpiUtCreateIntegerObject (ACPI_UINT64_MAX); if (!ReturnDesc) { Status = AE_NO_MEMORY; goto Cleanup; } /* * Examine each element until a match is found. Both match conditions * must be satisfied for a match to occur. Within the loop, * "continue" signifies that the current element does not match * and the next should be examined. * * Upon finding a match, the loop will terminate via "break" at * the bottom. If it terminates "normally", MatchValue will be * ACPI_UINT64_MAX (Ones) (its initial value) indicating that no * match was found. */ for ( ; Index < Operand[0]->Package.Count; Index++) { /* Get the current package element */ ThisElement = Operand[0]->Package.Elements[Index]; /* Treat any uninitialized (NULL) elements as non-matching */ if (!ThisElement) { continue; } /* * Both match conditions must be satisfied. Execution of a continue * (proceed to next iteration of enclosing for loop) signifies a * non-match. */ if (!AcpiExDoMatch ((UINT32) Operand[1]->Integer.Value, ThisElement, Operand[2])) { continue; } if (!AcpiExDoMatch ((UINT32) Operand[3]->Integer.Value, ThisElement, Operand[4])) { continue; } /* Match found: Index is the return value */ ReturnDesc->Integer.Value = Index; break; } break; case AML_LOAD_TABLE_OP: Status = AcpiExLoadTableOp (WalkState, &ReturnDesc); break; default: ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X", WalkState->Opcode)); Status = AE_AML_BAD_OPCODE; goto Cleanup; } Cleanup: /* Delete return object on error */ if (ACPI_FAILURE (Status)) { AcpiUtRemoveReference (ReturnDesc); } /* Save return object on success */ else { WalkState->ResultObj = ReturnDesc; } return_ACPI_STATUS (Status); }