439 lines
15 KiB
C
439 lines
15 KiB
C
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/******************************************************************************
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*
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* Module Name: exoparg6 - AML execution - opcodes with 6 arguments
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __EXOPARG6_C__
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#include "acpi.h"
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#include "accommon.h"
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#include "acinterp.h"
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#include "acparser.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_EXECUTER
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ACPI_MODULE_NAME ("exoparg6")
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/*!
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* Naming convention for AML interpreter execution routines.
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*
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* The routines that begin execution of AML opcodes are named with a common
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* convention based upon the number of arguments, the number of target operands,
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* and whether or not a value is returned:
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*
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* AcpiExOpcode_xA_yT_zR
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*
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* Where:
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*
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* xA - ARGUMENTS: The number of arguments (input operands) that are
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* required for this opcode type (1 through 6 args).
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* yT - TARGETS: The number of targets (output operands) that are required
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* for this opcode type (0, 1, or 2 targets).
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* zR - RETURN VALUE: Indicates whether this opcode type returns a value
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* as the function return (0 or 1).
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*
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* The AcpiExOpcode* functions are called via the Dispatcher component with
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* fully resolved operands.
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!*/
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/* Local prototypes */
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static BOOLEAN
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AcpiExDoMatch (
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UINT32 MatchOp,
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ACPI_OPERAND_OBJECT *PackageObj,
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ACPI_OPERAND_OBJECT *MatchObj);
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/*******************************************************************************
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*
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* FUNCTION: AcpiExDoMatch
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*
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* PARAMETERS: MatchOp - The AML match operand
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* PackageObj - Object from the target package
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* MatchObj - Object to be matched
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*
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* RETURN: TRUE if the match is successful, FALSE otherwise
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*
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* DESCRIPTION: Implements the low-level match for the ASL Match operator.
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* Package elements will be implicitly converted to the type of
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* the match object (Integer/Buffer/String).
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*
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******************************************************************************/
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static BOOLEAN
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AcpiExDoMatch (
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UINT32 MatchOp,
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ACPI_OPERAND_OBJECT *PackageObj,
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ACPI_OPERAND_OBJECT *MatchObj)
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{
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BOOLEAN LogicalResult = TRUE;
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ACPI_STATUS Status;
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/*
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* Note: Since the PackageObj/MatchObj ordering is opposite to that of
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* the standard logical operators, we have to reverse them when we call
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* DoLogicalOp in order to make the implicit conversion rules work
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* correctly. However, this means we have to flip the entire equation
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* also. A bit ugly perhaps, but overall, better than fussing the
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* parameters around at runtime, over and over again.
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*
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* Below, P[i] refers to the package element, M refers to the Match object.
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*/
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switch (MatchOp)
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{
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case MATCH_MTR:
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/* Always true */
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break;
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case MATCH_MEQ:
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/*
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* True if equal: (P[i] == M)
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* Change to: (M == P[i])
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*/
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Status = AcpiExDoLogicalOp (AML_LEQUAL_OP, MatchObj, PackageObj,
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&LogicalResult);
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if (ACPI_FAILURE (Status))
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{
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return (FALSE);
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}
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break;
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case MATCH_MLE:
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/*
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* True if less than or equal: (P[i] <= M) (P[i] NotGreater than M)
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* Change to: (M >= P[i]) (M NotLess than P[i])
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*/
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Status = AcpiExDoLogicalOp (AML_LLESS_OP, MatchObj, PackageObj,
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&LogicalResult);
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if (ACPI_FAILURE (Status))
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{
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return (FALSE);
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}
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LogicalResult = (BOOLEAN) !LogicalResult;
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break;
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case MATCH_MLT:
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/*
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* True if less than: (P[i] < M)
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* Change to: (M > P[i])
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*/
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Status = AcpiExDoLogicalOp (AML_LGREATER_OP, MatchObj, PackageObj,
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&LogicalResult);
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if (ACPI_FAILURE (Status))
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{
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return (FALSE);
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}
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break;
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case MATCH_MGE:
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/*
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* True if greater than or equal: (P[i] >= M) (P[i] NotLess than M)
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* Change to: (M <= P[i]) (M NotGreater than P[i])
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*/
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Status = AcpiExDoLogicalOp (AML_LGREATER_OP, MatchObj, PackageObj,
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&LogicalResult);
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if (ACPI_FAILURE (Status))
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{
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return (FALSE);
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}
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LogicalResult = (BOOLEAN)!LogicalResult;
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break;
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case MATCH_MGT:
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/*
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* True if greater than: (P[i] > M)
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* Change to: (M < P[i])
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*/
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Status = AcpiExDoLogicalOp (AML_LLESS_OP, MatchObj, PackageObj,
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&LogicalResult);
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if (ACPI_FAILURE (Status))
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{
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return (FALSE);
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}
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break;
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default:
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/* Undefined */
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return (FALSE);
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}
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return LogicalResult;
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiExOpcode_6A_0T_1R
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*
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* PARAMETERS: WalkState - Current walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Execute opcode with 6 arguments, no target, and a return value
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiExOpcode_6A_0T_1R (
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
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ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
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ACPI_STATUS Status = AE_OK;
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UINT64 Index;
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ACPI_OPERAND_OBJECT *ThisElement;
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ACPI_FUNCTION_TRACE_STR (ExOpcode_6A_0T_1R,
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AcpiPsGetOpcodeName (WalkState->Opcode));
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switch (WalkState->Opcode)
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{
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case AML_MATCH_OP:
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/*
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* Match (SearchPkg[0], MatchOp1[1], MatchObj1[2],
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* MatchOp2[3], MatchObj2[4], StartIndex[5])
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*/
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/* Validate both Match Term Operators (MTR, MEQ, etc.) */
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if ((Operand[1]->Integer.Value > MAX_MATCH_OPERATOR) ||
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(Operand[3]->Integer.Value > MAX_MATCH_OPERATOR))
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{
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ACPI_ERROR ((AE_INFO, "Match operator out of range"));
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Status = AE_AML_OPERAND_VALUE;
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goto Cleanup;
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}
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/* Get the package StartIndex, validate against the package length */
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Index = Operand[5]->Integer.Value;
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if (Index >= Operand[0]->Package.Count)
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{
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ACPI_ERROR ((AE_INFO,
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"Index (0x%8.8X%8.8X) beyond package end (0x%X)",
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ACPI_FORMAT_UINT64 (Index), Operand[0]->Package.Count));
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Status = AE_AML_PACKAGE_LIMIT;
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goto Cleanup;
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}
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/* Create an integer for the return value */
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/* Default return value is ACPI_UINT64_MAX if no match found */
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ReturnDesc = AcpiUtCreateIntegerObject (ACPI_UINT64_MAX);
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if (!ReturnDesc)
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{
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Status = AE_NO_MEMORY;
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goto Cleanup;
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}
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/*
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* Examine each element until a match is found. Both match conditions
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* must be satisfied for a match to occur. Within the loop,
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* "continue" signifies that the current element does not match
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* and the next should be examined.
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*
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* Upon finding a match, the loop will terminate via "break" at
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* the bottom. If it terminates "normally", MatchValue will be
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* ACPI_UINT64_MAX (Ones) (its initial value) indicating that no
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* match was found.
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*/
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for ( ; Index < Operand[0]->Package.Count; Index++)
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{
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/* Get the current package element */
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ThisElement = Operand[0]->Package.Elements[Index];
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/* Treat any uninitialized (NULL) elements as non-matching */
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if (!ThisElement)
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{
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continue;
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}
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/*
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* Both match conditions must be satisfied. Execution of a continue
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* (proceed to next iteration of enclosing for loop) signifies a
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* non-match.
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*/
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if (!AcpiExDoMatch ((UINT32) Operand[1]->Integer.Value,
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ThisElement, Operand[2]))
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{
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continue;
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}
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if (!AcpiExDoMatch ((UINT32) Operand[3]->Integer.Value,
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ThisElement, Operand[4]))
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{
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continue;
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}
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/* Match found: Index is the return value */
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ReturnDesc->Integer.Value = Index;
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break;
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}
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break;
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case AML_LOAD_TABLE_OP:
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Status = AcpiExLoadTableOp (WalkState, &ReturnDesc);
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break;
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default:
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ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
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WalkState->Opcode));
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Status = AE_AML_BAD_OPCODE;
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goto Cleanup;
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}
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Cleanup:
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/* Delete return object on error */
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if (ACPI_FAILURE (Status))
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{
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AcpiUtRemoveReference (ReturnDesc);
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}
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/* Save return object on success */
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else
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{
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WalkState->ResultObj = ReturnDesc;
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}
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return_ACPI_STATUS (Status);
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}
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