656 lines
20 KiB
C
656 lines
20 KiB
C
/******************************************************************************
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*
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* Module Name: dmextern - Support for External() ASL statements
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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 - 2010, 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 "acpi.h"
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#include "accommon.h"
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#include "amlcode.h"
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#include "acnamesp.h"
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#include "acdisasm.h"
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/*
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* This module is used for application-level code (iASL disassembler) only.
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*
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* It contains the code to create and emit any necessary External() ASL
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* statements for the module being disassembled.
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*/
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#define _COMPONENT ACPI_CA_DISASSEMBLER
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ACPI_MODULE_NAME ("dmextern")
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/*
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* This table maps ACPI_OBJECT_TYPEs to the corresponding ASL
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* ObjectTypeKeyword. Used to generate typed external declarations
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*/
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static const char *AcpiGbl_DmTypeNames[] =
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{
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/* 00 */ "", /* Type ANY */
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/* 01 */ ", IntObj",
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/* 02 */ ", StrObj",
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/* 03 */ ", BuffObj",
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/* 04 */ ", PkgObj",
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/* 05 */ ", FieldUnitObj",
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/* 06 */ ", DeviceObj",
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/* 07 */ ", EventObj",
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/* 08 */ ", MethodObj",
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/* 09 */ ", MutexObj",
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/* 10 */ ", OpRegionObj",
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/* 11 */ ", PowerResObj",
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/* 12 */ ", ProcessorObj",
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/* 13 */ ", ThermalZoneObj",
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/* 14 */ ", BuffFieldObj",
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/* 15 */ ", DDBHandleObj",
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/* 16 */ "", /* Debug object */
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/* 17 */ ", FieldUnitObj",
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/* 18 */ ", FieldUnitObj",
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/* 19 */ ", FieldUnitObj"
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};
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/* Local prototypes */
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static const char *
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AcpiDmGetObjectTypeName (
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ACPI_OBJECT_TYPE Type);
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static char *
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AcpiDmNormalizeParentPrefix (
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ACPI_PARSE_OBJECT *Op,
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char *Path);
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmGetObjectTypeName
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*
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* PARAMETERS: Type - An ACPI_OBJECT_TYPE
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*
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* RETURN: Pointer to a string
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*
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* DESCRIPTION: Map an object type to the ASL object type string.
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*
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******************************************************************************/
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static const char *
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AcpiDmGetObjectTypeName (
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ACPI_OBJECT_TYPE Type)
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{
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if (Type == ACPI_TYPE_LOCAL_SCOPE)
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{
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Type = ACPI_TYPE_DEVICE;
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}
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else if (Type > ACPI_TYPE_LOCAL_INDEX_FIELD)
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{
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return ("");
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}
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return (AcpiGbl_DmTypeNames[Type]);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmNormalizeParentPrefix
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*
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* PARAMETERS: Op - Parse op
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* Path - Path with parent prefix
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*
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* RETURN: The full pathname to the object (from the namespace root)
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*
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* DESCRIPTION: Returns the full pathname of a path with parent prefix
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* The caller must free the fullpath returned.
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*
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******************************************************************************/
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static char *
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AcpiDmNormalizeParentPrefix (
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ACPI_PARSE_OBJECT *Op,
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char *Path)
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{
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ACPI_NAMESPACE_NODE *Node;
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char *Fullpath;
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char *ParentPath;
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ACPI_SIZE Length;
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/* Search upwards in the parse tree until we reach a namespace node */
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while (Op)
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{
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if (Op->Common.Node)
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{
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break;
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}
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Op = Op->Common.Parent;
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}
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if (!Op)
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{
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return (NULL);
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}
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/*
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* Find the actual parent node for the reference:
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* Remove all carat prefixes from the input path.
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* There may be multiple parent prefixes (For example, ^^^M000)
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*/
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Node = Op->Common.Node;
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while (Node && (*Path == (UINT8) AML_PARENT_PREFIX))
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{
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Node = Node->Parent;
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Path++;
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}
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if (!Node)
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{
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return (NULL);
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}
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/* Get the full pathname for the parent node */
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ParentPath = AcpiNsGetExternalPathname (Node);
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if (!ParentPath)
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{
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return (NULL);
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}
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Length = (ACPI_STRLEN (ParentPath) + ACPI_STRLEN (Path) + 1);
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if (ParentPath[1])
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{
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/*
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* If ParentPath is not just a simple '\', increment the length
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* for the required dot separator (ParentPath.Path)
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*/
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Length++;
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}
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Fullpath = ACPI_ALLOCATE_ZEROED (Length);
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if (!Fullpath)
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{
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goto Cleanup;
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}
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/*
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* Concatenate parent fullpath and path. For example,
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* parent fullpath "\_SB_", Path "^INIT", Fullpath "\_SB_.INIT"
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*
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* Copy the parent path
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*/
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ACPI_STRCAT (Fullpath, ParentPath);
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/* Add dot separator (don't need dot if parent fullpath is a single "\") */
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if (ParentPath[1])
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{
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ACPI_STRCAT (Fullpath, ".");
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}
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/* Copy child path (carat parent prefix(es) were skipped above) */
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ACPI_STRCAT (Fullpath, Path);
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Cleanup:
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ACPI_FREE (ParentPath);
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return (Fullpath);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmAddToExternalList
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*
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* PARAMETERS: Op - Current parser Op
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* Path - Internal (AML) path to the object
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* Type - ACPI object type to be added
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* Value - Arg count if adding a Method object
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*
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* RETURN: None
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*
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* DESCRIPTION: Insert a new name into the global list of Externals which
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* will in turn be later emitted as an External() declaration
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* in the disassembled output.
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*
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******************************************************************************/
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void
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AcpiDmAddToExternalList (
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ACPI_PARSE_OBJECT *Op,
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char *Path,
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UINT8 Type,
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UINT32 Value)
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{
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char *ExternalPath;
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char *Fullpath = NULL;
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ACPI_EXTERNAL_LIST *NewExternal;
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ACPI_EXTERNAL_LIST *NextExternal;
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ACPI_EXTERNAL_LIST *PrevExternal = NULL;
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ACPI_STATUS Status;
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if (!Path)
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{
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return;
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}
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/* Externalize the ACPI path */
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Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Path,
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NULL, &ExternalPath);
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if (ACPI_FAILURE (Status))
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{
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return;
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}
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/* Get the full pathname from root if "Path" has a parent prefix */
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if (*Path == (UINT8) AML_PARENT_PREFIX)
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{
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Fullpath = AcpiDmNormalizeParentPrefix (Op, ExternalPath);
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if (Fullpath)
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{
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/* Set new external path */
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ACPI_FREE (ExternalPath);
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ExternalPath = Fullpath;
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}
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}
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/* Check all existing externals to ensure no duplicates */
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NextExternal = AcpiGbl_ExternalList;
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while (NextExternal)
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{
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if (!ACPI_STRCMP (ExternalPath, NextExternal->Path))
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{
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/* Duplicate method, check that the Value (ArgCount) is the same */
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if ((NextExternal->Type == ACPI_TYPE_METHOD) &&
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(NextExternal->Value != Value))
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{
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ACPI_ERROR ((AE_INFO,
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"Argument count mismatch for method %s %u %u",
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NextExternal->Path, NextExternal->Value, Value));
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}
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/* Allow upgrade of type from ANY */
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else if (NextExternal->Type == ACPI_TYPE_ANY)
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{
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NextExternal->Type = Type;
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NextExternal->Value = Value;
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}
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ACPI_FREE (ExternalPath);
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return;
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}
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NextExternal = NextExternal->Next;
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}
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/* Allocate and init a new External() descriptor */
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NewExternal = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_LIST));
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if (!NewExternal)
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{
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ACPI_FREE (ExternalPath);
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return;
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}
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NewExternal->Path = ExternalPath;
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NewExternal->Type = Type;
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NewExternal->Value = Value;
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NewExternal->Length = (UINT16) ACPI_STRLEN (ExternalPath);
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/* Was the external path with parent prefix normalized to a fullpath? */
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if (Fullpath == ExternalPath)
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{
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/* Get new internal path */
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Status = AcpiNsInternalizeName (ExternalPath, &Path);
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if (ACPI_FAILURE (Status))
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{
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ACPI_FREE (ExternalPath);
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ACPI_FREE (NewExternal);
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return;
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}
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/* Set flag to indicate External->InternalPath need to be freed */
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NewExternal->Flags |= ACPI_IPATH_ALLOCATED;
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}
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NewExternal->InternalPath = Path;
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/* Link the new descriptor into the global list, ordered by string length */
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NextExternal = AcpiGbl_ExternalList;
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while (NextExternal)
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{
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if (NewExternal->Length <= NextExternal->Length)
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{
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if (PrevExternal)
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{
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PrevExternal->Next = NewExternal;
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}
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else
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{
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AcpiGbl_ExternalList = NewExternal;
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}
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NewExternal->Next = NextExternal;
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return;
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}
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PrevExternal = NextExternal;
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NextExternal = NextExternal->Next;
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}
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if (PrevExternal)
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{
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PrevExternal->Next = NewExternal;
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}
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else
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{
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AcpiGbl_ExternalList = NewExternal;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmAddExternalsToNamespace
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Add all externals to the namespace. Allows externals to be
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* "resolved".
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*
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******************************************************************************/
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void
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AcpiDmAddExternalsToNamespace (
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void)
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{
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ACPI_STATUS Status;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_OPERAND_OBJECT *MethodDesc;
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ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList;
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while (External)
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{
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/* Add the external name (object) into the namespace */
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Status = AcpiNsLookup (NULL, External->InternalPath, External->Type,
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ACPI_IMODE_LOAD_PASS1,
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ACPI_NS_EXTERNAL | ACPI_NS_DONT_OPEN_SCOPE,
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NULL, &Node);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status,
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"while adding external to namespace [%s]",
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External->Path));
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}
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else if (External->Type == ACPI_TYPE_METHOD)
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{
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/* For methods, we need to save the argument count */
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MethodDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
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MethodDesc->Method.ParamCount = (UINT8) External->Value;
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Node->Object = MethodDesc;
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}
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External = External->Next;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmGetExternalMethodCount
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*
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* PARAMETERS: None
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*
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* RETURN: The number of control method externals in the external list
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*
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* DESCRIPTION: Return the number of method externals that have been generated.
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* If any control method externals have been found, we must
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* re-parse the entire definition block with the new information
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* (number of arguments for the methods.) This is limitation of
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* AML, we don't know the number of arguments from the control
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* method invocation itself.
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*
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******************************************************************************/
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UINT32
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AcpiDmGetExternalMethodCount (
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void)
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{
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ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList;
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UINT32 Count = 0;
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while (External)
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{
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if (External->Type == ACPI_TYPE_METHOD)
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{
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Count++;
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}
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External = External->Next;
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}
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return (Count);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDmClearExternalList
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*
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* PARAMETERS: None
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*
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* RETURN: None
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*
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* DESCRIPTION: Free the entire External info list
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*
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******************************************************************************/
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|
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void
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|
AcpiDmClearExternalList (
|
|
void)
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|
{
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|
ACPI_EXTERNAL_LIST *NextExternal;
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|
|
|
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|
while (AcpiGbl_ExternalList)
|
|
{
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|
NextExternal = AcpiGbl_ExternalList->Next;
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ACPI_FREE (AcpiGbl_ExternalList->Path);
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|
ACPI_FREE (AcpiGbl_ExternalList);
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|
AcpiGbl_ExternalList = NextExternal;
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}
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}
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/*******************************************************************************
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*
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|
* FUNCTION: AcpiDmEmitExternals
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|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Emit an External() ASL statement for each of the externals in
|
|
* the global external info list.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiDmEmitExternals (
|
|
void)
|
|
{
|
|
ACPI_EXTERNAL_LIST *NextExternal;
|
|
|
|
|
|
if (!AcpiGbl_ExternalList)
|
|
{
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Walk the list of externals (unresolved references)
|
|
* found during the AML parsing
|
|
*/
|
|
while (AcpiGbl_ExternalList)
|
|
{
|
|
AcpiOsPrintf (" External (%s%s",
|
|
AcpiGbl_ExternalList->Path,
|
|
AcpiDmGetObjectTypeName (AcpiGbl_ExternalList->Type));
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|
|
|
if (AcpiGbl_ExternalList->Type == ACPI_TYPE_METHOD)
|
|
{
|
|
AcpiOsPrintf (") // %u Arguments\n",
|
|
AcpiGbl_ExternalList->Value);
|
|
}
|
|
else
|
|
{
|
|
AcpiOsPrintf (")\n");
|
|
}
|
|
|
|
/* Free this external info block and move on to next external */
|
|
|
|
NextExternal = AcpiGbl_ExternalList->Next;
|
|
if (AcpiGbl_ExternalList->Flags & ACPI_IPATH_ALLOCATED)
|
|
{
|
|
ACPI_FREE (AcpiGbl_ExternalList->InternalPath);
|
|
}
|
|
|
|
ACPI_FREE (AcpiGbl_ExternalList->Path);
|
|
ACPI_FREE (AcpiGbl_ExternalList);
|
|
AcpiGbl_ExternalList = NextExternal;
|
|
}
|
|
|
|
AcpiOsPrintf ("\n");
|
|
}
|
|
|