366 lines
12 KiB
C
366 lines
12 KiB
C
/******************************************************************************
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*
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* Module Name: psutils - Parser miscellaneous utilities (Parser only)
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* xRevision: 1.67 $
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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 - 2006, 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: psutils.c,v 1.1 2006/03/23 13:36:31 kochi Exp $");
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#include "acpi.h"
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#include "acparser.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_PARSER
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ACPI_MODULE_NAME ("psutils")
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsCreateScopeOp
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*
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* PARAMETERS: None
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*
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* RETURN: A new Scope object, null on failure
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*
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* DESCRIPTION: Create a Scope and associated namepath op with the root name
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*
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******************************************************************************/
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ACPI_PARSE_OBJECT *
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AcpiPsCreateScopeOp (
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void)
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{
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ACPI_PARSE_OBJECT *ScopeOp;
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ScopeOp = AcpiPsAllocOp (AML_SCOPE_OP);
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if (!ScopeOp)
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{
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return (NULL);
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}
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ScopeOp->Named.Name = ACPI_ROOT_NAME;
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return (ScopeOp);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsInitOp
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*
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* PARAMETERS: Op - A newly allocated Op object
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* Opcode - Opcode to store in the Op
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*
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* RETURN: None
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*
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* DESCRIPTION: Initialize a parse (Op) object
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*
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******************************************************************************/
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void
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AcpiPsInitOp (
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ACPI_PARSE_OBJECT *Op,
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UINT16 Opcode)
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{
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ACPI_FUNCTION_ENTRY ();
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Op->Common.DataType = ACPI_DESC_TYPE_PARSER;
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Op->Common.AmlOpcode = Opcode;
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ACPI_DISASM_ONLY_MEMBERS (ACPI_STRNCPY (Op->Common.AmlOpName,
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(AcpiPsGetOpcodeInfo (Opcode))->Name,
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sizeof (Op->Common.AmlOpName)));
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsAllocOp
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*
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* PARAMETERS: Opcode - Opcode that will be stored in the new Op
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*
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* RETURN: Pointer to the new Op, null on failure
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*
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* DESCRIPTION: Allocate an acpi_op, choose op type (and thus size) based on
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* opcode. A cache of opcodes is available for the pure
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* GENERIC_OP, since this is by far the most commonly used.
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*
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******************************************************************************/
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ACPI_PARSE_OBJECT*
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AcpiPsAllocOp (
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UINT16 Opcode)
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{
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ACPI_PARSE_OBJECT *Op;
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const ACPI_OPCODE_INFO *OpInfo;
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UINT8 Flags = ACPI_PARSEOP_GENERIC;
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ACPI_FUNCTION_ENTRY ();
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OpInfo = AcpiPsGetOpcodeInfo (Opcode);
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/* Determine type of ParseOp required */
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if (OpInfo->Flags & AML_DEFER)
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{
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Flags = ACPI_PARSEOP_DEFERRED;
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}
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else if (OpInfo->Flags & AML_NAMED)
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{
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Flags = ACPI_PARSEOP_NAMED;
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}
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else if (Opcode == AML_INT_BYTELIST_OP)
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{
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Flags = ACPI_PARSEOP_BYTELIST;
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}
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/* Allocate the minimum required size object */
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if (Flags == ACPI_PARSEOP_GENERIC)
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{
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/* The generic op (default) is by far the most common (16 to 1) */
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Op = AcpiOsAcquireObject (AcpiGbl_PsNodeCache);
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}
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else
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{
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/* Extended parseop */
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Op = AcpiOsAcquireObject (AcpiGbl_PsNodeExtCache);
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}
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/* Initialize the Op */
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if (Op)
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{
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AcpiPsInitOp (Op, Opcode);
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Op->Common.Flags = Flags;
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}
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return (Op);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsFreeOp
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*
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* PARAMETERS: Op - Op to be freed
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*
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* RETURN: None.
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*
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* DESCRIPTION: Free an Op object. Either put it on the GENERIC_OP cache list
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* or actually free it.
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*
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******************************************************************************/
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void
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AcpiPsFreeOp (
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ACPI_PARSE_OBJECT *Op)
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{
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ACPI_FUNCTION_NAME ("PsFreeOp");
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if (Op->Common.AmlOpcode == AML_INT_RETURN_VALUE_OP)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Free retval op: %p\n", Op));
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}
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if (Op->Common.Flags & ACPI_PARSEOP_GENERIC)
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{
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(void) AcpiOsReleaseObject (AcpiGbl_PsNodeCache, Op);
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}
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else
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{
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(void) AcpiOsReleaseObject (AcpiGbl_PsNodeExtCache, Op);
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: Utility functions
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*
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* DESCRIPTION: Low level character and object functions
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*
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******************************************************************************/
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/*
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* Is "c" a namestring lead character?
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*/
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BOOLEAN
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AcpiPsIsLeadingChar (
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UINT32 c)
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{
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return ((BOOLEAN) (c == '_' || (c >= 'A' && c <= 'Z')));
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}
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/*
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* Is "c" a namestring prefix character?
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*/
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BOOLEAN
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AcpiPsIsPrefixChar (
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UINT32 c)
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{
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return ((BOOLEAN) (c == '\\' || c == '^'));
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}
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/*
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* Get op's name (4-byte name segment) or 0 if unnamed
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*/
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UINT32
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AcpiPsGetName (
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ACPI_PARSE_OBJECT *Op)
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{
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/* The "generic" object has no name associated with it */
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if (Op->Common.Flags & ACPI_PARSEOP_GENERIC)
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{
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return (0);
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}
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/* Only the "Extended" parse objects have a name */
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return (Op->Named.Name);
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}
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/*
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* Set op's name
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*/
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void
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AcpiPsSetName (
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ACPI_PARSE_OBJECT *Op,
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UINT32 name)
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{
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/* The "generic" object has no name associated with it */
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if (Op->Common.Flags & ACPI_PARSEOP_GENERIC)
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{
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return;
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}
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Op->Named.Name = name;
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}
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