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c7dd20b0d7
Add 2010 copyright to all module headers and signons, including the Linux header. This affects virtually every file in the ACPICA core subsystem, iASL compiler, and all utilities.
661 lines
19 KiB
C
661 lines
19 KiB
C
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/******************************************************************************
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*
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* Module Name: aslcodegen - AML code generation
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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 "aslcompiler.h"
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#include "aslcompiler.y.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslcodegen")
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/* Local prototypes */
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static ACPI_STATUS
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CgAmlWriteWalk (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context);
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static void
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CgLocalWriteAmlData (
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ACPI_PARSE_OBJECT *Op,
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void *Buffer,
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UINT32 Length);
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static void
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CgWriteAmlOpcode (
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ACPI_PARSE_OBJECT *Op);
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static void
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CgWriteTableHeader (
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ACPI_PARSE_OBJECT *Op);
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static void
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CgCloseTable (
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void);
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static void
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CgWriteNode (
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ACPI_PARSE_OBJECT *Op);
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/*******************************************************************************
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*
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* FUNCTION: CgGenerateAmlOutput
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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: Generate AML code. Currently generates the listing file
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* simultaneously.
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*
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******************************************************************************/
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void
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CgGenerateAmlOutput (
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void)
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{
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DbgPrint (ASL_DEBUG_OUTPUT, "\nWriting AML\n\n");
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/* Generate the AML output file */
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FlSeekFile (ASL_FILE_SOURCE_OUTPUT, 0);
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Gbl_SourceLine = 0;
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Gbl_NextError = Gbl_ErrorLog;
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TrWalkParseTree (RootNode, ASL_WALK_VISIT_DOWNWARD,
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CgAmlWriteWalk, NULL, NULL);
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CgCloseTable ();
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}
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/*******************************************************************************
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*
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* FUNCTION: CgAmlWriteWalk
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*
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* PARAMETERS: ASL_WALK_CALLBACK
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*
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* RETURN: Status
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*
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* DESCRIPTION: Parse tree walk to generate the AML code.
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*
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******************************************************************************/
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static ACPI_STATUS
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CgAmlWriteWalk (
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ACPI_PARSE_OBJECT *Op,
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UINT32 Level,
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void *Context)
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{
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/*
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* Print header at level 0. Alignment assumes 32-bit pointers
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*/
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if (!Level)
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{
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DbgPrint (ASL_TREE_OUTPUT,
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"Final parse tree used for AML output:\n");
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DbgPrint (ASL_TREE_OUTPUT,
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"%*s Value P_Op A_Op OpLen PByts Len SubLen PSubLen OpPtr Child Parent Flags AcTyp Final Col L\n",
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76, " ");
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}
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/* Debug output */
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DbgPrint (ASL_TREE_OUTPUT,
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"%5.5d [%2d]", Op->Asl.LogicalLineNumber, Level);
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UtPrintFormattedName (Op->Asl.ParseOpcode, Level);
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if (Op->Asl.ParseOpcode == PARSEOP_NAMESEG ||
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Op->Asl.ParseOpcode == PARSEOP_NAMESTRING ||
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Op->Asl.ParseOpcode == PARSEOP_METHODCALL)
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{
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DbgPrint (ASL_TREE_OUTPUT,
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"%10.32s ", Op->Asl.ExternalName);
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}
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else
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{
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DbgPrint (ASL_TREE_OUTPUT, " ");
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}
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DbgPrint (ASL_TREE_OUTPUT,
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"%08X %04X %04X %01X %04X %04X %04X %04X %08X %08X %08X %08X %08X %04X %02d %02d\n",
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/* 1 */ (UINT32) Op->Asl.Value.Integer,
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/* 2 */ Op->Asl.ParseOpcode,
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/* 3 */ Op->Asl.AmlOpcode,
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/* 4 */ Op->Asl.AmlOpcodeLength,
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/* 5 */ Op->Asl.AmlPkgLenBytes,
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/* 6 */ Op->Asl.AmlLength,
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/* 7 */ Op->Asl.AmlSubtreeLength,
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/* 8 */ Op->Asl.Parent ? Op->Asl.Parent->Asl.AmlSubtreeLength : 0,
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/* 9 */ Op,
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/* 10 */ Op->Asl.Child,
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/* 11 */ Op->Asl.Parent,
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/* 12 */ Op->Asl.CompileFlags,
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/* 13 */ Op->Asl.AcpiBtype,
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/* 14 */ Op->Asl.FinalAmlLength,
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/* 15 */ Op->Asl.Column,
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/* 16 */ Op->Asl.LineNumber);
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/* Generate the AML for this node */
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CgWriteNode (Op);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: CgLocalWriteAmlData
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*
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* PARAMETERS: Op - Current parse op
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* Buffer - Buffer to write
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* Length - Size of data in buffer
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*
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* RETURN: None
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*
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* DESCRIPTION: Write a buffer of AML data to the AML output file.
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*
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******************************************************************************/
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static void
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CgLocalWriteAmlData (
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ACPI_PARSE_OBJECT *Op,
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void *Buffer,
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UINT32 Length)
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{
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/* Write the raw data to the AML file */
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FlWriteFile (ASL_FILE_AML_OUTPUT, Buffer, Length);
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/* Update the final AML length for this node (used for listings) */
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if (Op)
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{
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Op->Asl.FinalAmlLength += Length;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: CgWriteAmlOpcode
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*
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* PARAMETERS: Op - Parse node with an AML opcode
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*
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* RETURN: None.
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*
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* DESCRIPTION: Write the AML opcode corresponding to a parse node.
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*
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******************************************************************************/
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static void
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CgWriteAmlOpcode (
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ACPI_PARSE_OBJECT *Op)
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{
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UINT8 PkgLenFirstByte;
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UINT32 i;
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union {
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UINT16 Opcode;
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UINT8 OpcodeBytes[2];
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} Aml;
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union {
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UINT32 Len;
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UINT8 LenBytes[4];
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} PkgLen;
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/* We expect some DEFAULT_ARGs, just ignore them */
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if (Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
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{
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return;
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}
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switch (Op->Asl.AmlOpcode)
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{
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case AML_UNASSIGNED_OPCODE:
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/* These opcodes should not get here */
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printf ("Found a node with an unassigned AML opcode\n");
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fprintf (stderr, "Found a node with an unassigned AML opcode\n");
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return;
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case AML_INT_RESERVEDFIELD_OP:
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/* Special opcodes for within a field definition */
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Aml.Opcode = 0x00;
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break;
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case AML_INT_ACCESSFIELD_OP:
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Aml.Opcode = 0x01;
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break;
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default:
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Aml.Opcode = Op->Asl.AmlOpcode;
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break;
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}
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switch (Aml.Opcode)
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{
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case AML_PACKAGE_LENGTH:
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/* Value is the length to be encoded (Used in field definitions) */
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PkgLen.Len = (UINT32) Op->Asl.Value.Integer;
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break;
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default:
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/* Check for two-byte opcode */
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if (Aml.Opcode > 0x00FF)
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{
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/* Write the high byte first */
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CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[1], 1);
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}
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CgLocalWriteAmlData (Op, &Aml.OpcodeBytes[0], 1);
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/* Subtreelength doesn't include length of package length bytes */
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PkgLen.Len = Op->Asl.AmlSubtreeLength + Op->Asl.AmlPkgLenBytes;
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break;
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}
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/* Does this opcode have an associated "PackageLength" field? */
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if (Op->Asl.CompileFlags & NODE_AML_PACKAGE)
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{
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if (Op->Asl.AmlPkgLenBytes == 1)
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{
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/* Simplest case -- no bytes to follow, just write the count */
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CgLocalWriteAmlData (Op, &PkgLen.LenBytes[0], 1);
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}
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else if (Op->Asl.AmlPkgLenBytes != 0)
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{
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/*
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* Encode the "bytes to follow" in the first byte, top two bits.
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* The low-order nybble of the length is in the bottom 4 bits
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*/
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PkgLenFirstByte = (UINT8)
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(((UINT32) (Op->Asl.AmlPkgLenBytes - 1) << 6) |
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(PkgLen.LenBytes[0] & 0x0F));
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CgLocalWriteAmlData (Op, &PkgLenFirstByte, 1);
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/*
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* Shift the length over by the 4 bits we just stuffed
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* in the first byte
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*/
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PkgLen.Len >>= 4;
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/* Now we can write the remaining bytes - either 1, 2, or 3 bytes */
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for (i = 0; i < (UINT32) (Op->Asl.AmlPkgLenBytes - 1); i++)
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{
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CgLocalWriteAmlData (Op, &PkgLen.LenBytes[i], 1);
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}
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}
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}
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switch (Aml.Opcode)
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{
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case AML_BYTE_OP:
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CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 1);
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break;
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case AML_WORD_OP:
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CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 2);
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break;
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case AML_DWORD_OP:
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CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 4);
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break;
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case AML_QWORD_OP:
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CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, 8);
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break;
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case AML_STRING_OP:
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CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
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break;
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default:
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/* All data opcodes must appear above */
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break;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: CgWriteTableHeader
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*
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* PARAMETERS: Op - The DEFINITIONBLOCK node
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*
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* RETURN: None
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*
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* DESCRIPTION: Write a table header corresponding to the DEFINITIONBLOCK
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*
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******************************************************************************/
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static void
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CgWriteTableHeader (
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ACPI_PARSE_OBJECT *Op)
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{
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ACPI_PARSE_OBJECT *Child;
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/* AML filename */
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Child = Op->Asl.Child;
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/* Signature */
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Child = Child->Asl.Next;
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strncpy (TableHeader.Signature, Child->Asl.Value.String, 4);
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/* Revision */
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Child = Child->Asl.Next;
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TableHeader.Revision = (UINT8) Child->Asl.Value.Integer;
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/* Command-line Revision override */
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if (Gbl_RevisionOverride)
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{
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TableHeader.Revision = Gbl_RevisionOverride;
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}
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/* OEMID */
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Child = Child->Asl.Next;
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strncpy (TableHeader.OemId, Child->Asl.Value.String, 6);
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/* OEM TableID */
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Child = Child->Asl.Next;
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strncpy (TableHeader.OemTableId, Child->Asl.Value.String, 8);
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/* OEM Revision */
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Child = Child->Asl.Next;
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TableHeader.OemRevision = (UINT32) Child->Asl.Value.Integer;
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/* Compiler ID */
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strncpy (TableHeader.AslCompilerId, CompilerCreatorId, 4);
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/* Compiler version */
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TableHeader.AslCompilerRevision = CompilerCreatorRevision;
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/* Table length. Checksum zero for now, will rewrite later */
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TableHeader.Length = Gbl_TableLength;
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TableHeader.Checksum = 0;
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CgLocalWriteAmlData (Op, &TableHeader, sizeof (ACPI_TABLE_HEADER));
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}
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/*******************************************************************************
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*
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* FUNCTION: CgCloseTable
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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: Complete the ACPI table by calculating the checksum and
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* re-writing the header.
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*
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******************************************************************************/
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static void
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CgCloseTable (
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void)
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{
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signed char Sum;
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UINT8 FileByte;
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FlSeekFile (ASL_FILE_AML_OUTPUT, 0);
|
|
Sum = 0;
|
|
|
|
/* Calculate the checksum over the entire file */
|
|
|
|
while (FlReadFile (ASL_FILE_AML_OUTPUT, &FileByte, 1) == AE_OK)
|
|
{
|
|
Sum = (signed char) (Sum + FileByte);
|
|
}
|
|
|
|
/* Re-write the table header with the checksum */
|
|
|
|
TableHeader.Checksum = (UINT8) (0 - Sum);
|
|
|
|
FlSeekFile (ASL_FILE_AML_OUTPUT, 0);
|
|
CgLocalWriteAmlData (NULL, &TableHeader, sizeof (ACPI_TABLE_HEADER));
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: CgWriteNode
|
|
*
|
|
* PARAMETERS: Op - Parse node to write.
|
|
*
|
|
* RETURN: None.
|
|
*
|
|
* DESCRIPTION: Write the AML that corresponds to a parse node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
CgWriteNode (
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ASL_RESOURCE_NODE *Rnode;
|
|
|
|
|
|
/* Always check for DEFAULT_ARG and other "Noop" nodes */
|
|
/* TBD: this may not be the best place for this check */
|
|
|
|
if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_EXTERNAL) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_INCLUDE) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_INCLUDE_END))
|
|
{
|
|
return;
|
|
}
|
|
|
|
Op->Asl.FinalAmlLength = 0;
|
|
|
|
switch (Op->Asl.AmlOpcode)
|
|
{
|
|
case AML_RAW_DATA_BYTE:
|
|
case AML_RAW_DATA_WORD:
|
|
case AML_RAW_DATA_DWORD:
|
|
case AML_RAW_DATA_QWORD:
|
|
|
|
CgLocalWriteAmlData (Op, &Op->Asl.Value.Integer, Op->Asl.AmlLength);
|
|
return;
|
|
|
|
|
|
case AML_RAW_DATA_BUFFER:
|
|
|
|
CgLocalWriteAmlData (Op, Op->Asl.Value.Buffer, Op->Asl.AmlLength);
|
|
return;
|
|
|
|
|
|
case AML_RAW_DATA_CHAIN:
|
|
|
|
Rnode = ACPI_CAST_PTR (ASL_RESOURCE_NODE, Op->Asl.Value.Buffer);
|
|
while (Rnode)
|
|
{
|
|
CgLocalWriteAmlData (Op, Rnode->Buffer, Rnode->BufferLength);
|
|
Rnode = Rnode->Next;
|
|
}
|
|
return;
|
|
|
|
default:
|
|
/* Internal data opcodes must all appear above */
|
|
break;
|
|
}
|
|
|
|
switch (Op->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_DEFAULT_ARG:
|
|
|
|
break;
|
|
|
|
case PARSEOP_DEFINITIONBLOCK:
|
|
|
|
CgWriteTableHeader (Op);
|
|
break;
|
|
|
|
case PARSEOP_NAMESEG:
|
|
case PARSEOP_NAMESTRING:
|
|
case PARSEOP_METHODCALL:
|
|
|
|
CgLocalWriteAmlData (Op, Op->Asl.Value.String, Op->Asl.AmlLength);
|
|
break;
|
|
|
|
default:
|
|
|
|
CgWriteAmlOpcode (Op);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|