2021 lines
57 KiB
C
2021 lines
57 KiB
C
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/******************************************************************************
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*
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* Module Name: aslanalyze.c - check for semantic errors
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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 "acparser.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslanalyze")
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/* Local prototypes */
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static UINT32
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AnMapArgTypeToBtype (
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UINT32 ArgType);
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static UINT32
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AnMapEtypeToBtype (
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UINT32 Etype);
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static void
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AnFormatBtype (
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char *Buffer,
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UINT32 Btype);
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static UINT32
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AnGetBtype (
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ACPI_PARSE_OBJECT *Op);
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static UINT32
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AnMapObjTypeToBtype (
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ACPI_PARSE_OBJECT *Op);
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static BOOLEAN
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AnLastStatementIsReturn (
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ACPI_PARSE_OBJECT *Op);
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static void
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AnCheckMethodReturnValue (
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ACPI_PARSE_OBJECT *Op,
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const ACPI_OPCODE_INFO *OpInfo,
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ACPI_PARSE_OBJECT *ArgOp,
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UINT32 RequiredBtypes,
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UINT32 ThisNodeBtype);
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static BOOLEAN
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AnIsInternalMethod (
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ACPI_PARSE_OBJECT *Op);
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static UINT32
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AnGetInternalMethodReturnType (
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ACPI_PARSE_OBJECT *Op);
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BOOLEAN
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AnIsResultUsed (
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ACPI_PARSE_OBJECT *Op);
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/*******************************************************************************
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*
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* FUNCTION: AnIsInternalMethod
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*
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* PARAMETERS: Op - Current op
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*
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* RETURN: Boolean
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*
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* DESCRIPTION: Check for an internal control method.
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*
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******************************************************************************/
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static BOOLEAN
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AnIsInternalMethod (
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ACPI_PARSE_OBJECT *Op)
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{
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if ((!ACPI_STRCMP (Op->Asl.ExternalName, "\\_OSI")) ||
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(!ACPI_STRCMP (Op->Asl.ExternalName, "_OSI")))
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{
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return (TRUE);
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}
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return (FALSE);
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}
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/*******************************************************************************
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*
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* FUNCTION: AnGetInternalMethodReturnType
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*
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* PARAMETERS: Op - Current op
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*
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* RETURN: Btype
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*
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* DESCRIPTION: Get the return type of an internal method
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*
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******************************************************************************/
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static UINT32
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AnGetInternalMethodReturnType (
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ACPI_PARSE_OBJECT *Op)
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{
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if ((!ACPI_STRCMP (Op->Asl.ExternalName, "\\_OSI")) ||
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(!ACPI_STRCMP (Op->Asl.ExternalName, "_OSI")))
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{
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return (ACPI_BTYPE_STRING);
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}
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return (0);
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}
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/*******************************************************************************
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*
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* FUNCTION: AnMapArgTypeToBtype
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*
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* PARAMETERS: ArgType - The ARGI required type(s) for this argument,
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* from the opcode info table
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*
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* RETURN: The corresponding Bit-encoded types
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*
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* DESCRIPTION: Convert an encoded ARGI required argument type code into a
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* bitfield type code. Implements the implicit source conversion
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* rules.
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*
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******************************************************************************/
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static UINT32
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AnMapArgTypeToBtype (
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UINT32 ArgType)
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{
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switch (ArgType)
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{
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/* Simple types */
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case ARGI_ANYTYPE:
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return (ACPI_BTYPE_OBJECTS_AND_REFS);
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case ARGI_PACKAGE:
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return (ACPI_BTYPE_PACKAGE);
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case ARGI_EVENT:
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return (ACPI_BTYPE_EVENT);
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case ARGI_MUTEX:
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return (ACPI_BTYPE_MUTEX);
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case ARGI_DDBHANDLE:
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/*
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* DDBHandleObject := SuperName
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* ACPI_BTYPE_REFERENCE: Index reference as parameter of Load/Unload
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*/
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return (ACPI_BTYPE_DDB_HANDLE | ACPI_BTYPE_REFERENCE);
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/* Interchangeable types */
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/*
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* Source conversion rules:
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* Integer, String, and Buffer are all interchangeable
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*/
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case ARGI_INTEGER:
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case ARGI_STRING:
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case ARGI_BUFFER:
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case ARGI_BUFFER_OR_STRING:
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case ARGI_COMPUTEDATA:
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return (ACPI_BTYPE_COMPUTE_DATA);
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/* References */
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case ARGI_INTEGER_REF:
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return (ACPI_BTYPE_INTEGER);
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case ARGI_OBJECT_REF:
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return (ACPI_BTYPE_ALL_OBJECTS);
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case ARGI_DEVICE_REF:
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return (ACPI_BTYPE_DEVICE_OBJECTS);
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case ARGI_REFERENCE:
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return (ACPI_BTYPE_REFERENCE);
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case ARGI_TARGETREF:
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case ARGI_FIXED_TARGET:
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case ARGI_SIMPLE_TARGET:
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return (ACPI_BTYPE_OBJECTS_AND_REFS);
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/* Complex types */
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case ARGI_DATAOBJECT:
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/*
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* Buffer, string, package or reference to a Op -
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* Used only by SizeOf operator
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*/
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return (ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER |
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ACPI_BTYPE_PACKAGE | ACPI_BTYPE_REFERENCE);
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case ARGI_COMPLEXOBJ:
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/* Buffer, String, or package */
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return (ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER | ACPI_BTYPE_PACKAGE);
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case ARGI_REF_OR_STRING:
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return (ACPI_BTYPE_STRING | ACPI_BTYPE_REFERENCE);
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case ARGI_REGION_OR_BUFFER:
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/* Used by Load() only. Allow buffers in addition to regions/fields */
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return (ACPI_BTYPE_REGION | ACPI_BTYPE_BUFFER | ACPI_BTYPE_FIELD_UNIT);
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case ARGI_DATAREFOBJ:
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return (ACPI_BTYPE_INTEGER |ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER |
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ACPI_BTYPE_PACKAGE | ACPI_BTYPE_REFERENCE | ACPI_BTYPE_DDB_HANDLE);
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default:
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break;
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}
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return (ACPI_BTYPE_OBJECTS_AND_REFS);
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}
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/*******************************************************************************
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*
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* FUNCTION: AnMapEtypeToBtype
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*
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* PARAMETERS: Etype - Encoded ACPI Type
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*
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* RETURN: Btype corresponding to the Etype
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*
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* DESCRIPTION: Convert an encoded ACPI type to a bitfield type applying the
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* operand conversion rules. In other words, returns the type(s)
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* this Etype is implicitly converted to during interpretation.
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*
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******************************************************************************/
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static UINT32
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AnMapEtypeToBtype (
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UINT32 Etype)
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{
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if (Etype == ACPI_TYPE_ANY)
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{
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return ACPI_BTYPE_OBJECTS_AND_REFS;
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}
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/* Try the standard ACPI data types */
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if (Etype <= ACPI_TYPE_EXTERNAL_MAX)
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{
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/*
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* This switch statement implements the allowed operand conversion
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* rules as per the "ASL Data Types" section of the ACPI
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* specification.
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*/
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switch (Etype)
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{
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case ACPI_TYPE_INTEGER:
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return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_DDB_HANDLE);
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case ACPI_TYPE_STRING:
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case ACPI_TYPE_BUFFER:
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return (ACPI_BTYPE_COMPUTE_DATA);
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case ACPI_TYPE_PACKAGE:
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return (ACPI_BTYPE_PACKAGE);
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case ACPI_TYPE_FIELD_UNIT:
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return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_FIELD_UNIT);
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case ACPI_TYPE_BUFFER_FIELD:
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return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_BUFFER_FIELD);
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case ACPI_TYPE_DDB_HANDLE:
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return (ACPI_BTYPE_INTEGER | ACPI_BTYPE_DDB_HANDLE);
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case ACPI_BTYPE_DEBUG_OBJECT:
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/* Cannot be used as a source operand */
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return (0);
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default:
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return (1 << (Etype - 1));
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}
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}
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/* Try the internal data types */
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switch (Etype)
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{
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case ACPI_TYPE_LOCAL_REGION_FIELD:
|
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case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
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|
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/* Named fields can be either Integer/Buffer/String */
|
|
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return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_FIELD_UNIT);
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case ACPI_TYPE_LOCAL_ALIAS:
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|
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return (ACPI_BTYPE_INTEGER);
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|
|
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case ACPI_TYPE_LOCAL_RESOURCE:
|
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case ACPI_TYPE_LOCAL_RESOURCE_FIELD:
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return (ACPI_BTYPE_REFERENCE);
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default:
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printf ("Unhandled encoded type: %X\n", Etype);
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return (0);
|
|
}
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}
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|
|
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/*******************************************************************************
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*
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* FUNCTION: AnFormatBtype
|
|
*
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* PARAMETERS: Btype - Bitfield of ACPI types
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* Buffer - Where to put the ascii string
|
|
*
|
|
* RETURN: None.
|
|
*
|
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* DESCRIPTION: Convert a Btype to a string of ACPI types
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
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AnFormatBtype (
|
|
char *Buffer,
|
|
UINT32 Btype)
|
|
{
|
|
UINT32 Type;
|
|
BOOLEAN First = TRUE;
|
|
|
|
|
|
*Buffer = 0;
|
|
|
|
if (Btype == 0)
|
|
{
|
|
strcat (Buffer, "NoReturnValue");
|
|
return;
|
|
}
|
|
|
|
for (Type = 1; Type <= ACPI_TYPE_EXTERNAL_MAX; Type++)
|
|
{
|
|
if (Btype & 0x00000001)
|
|
{
|
|
if (!First)
|
|
{
|
|
strcat (Buffer, "|");
|
|
}
|
|
First = FALSE;
|
|
strcat (Buffer, AcpiUtGetTypeName (Type));
|
|
}
|
|
Btype >>= 1;
|
|
}
|
|
|
|
if (Btype & 0x00000001)
|
|
{
|
|
if (!First)
|
|
{
|
|
strcat (Buffer, "|");
|
|
}
|
|
First = FALSE;
|
|
strcat (Buffer, "Reference");
|
|
}
|
|
|
|
Btype >>= 1;
|
|
if (Btype & 0x00000001)
|
|
{
|
|
if (!First)
|
|
{
|
|
strcat (Buffer, "|");
|
|
}
|
|
First = FALSE;
|
|
strcat (Buffer, "Resource");
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnGetBtype
|
|
*
|
|
* PARAMETERS: Op - Parse node whose type will be returned.
|
|
*
|
|
* RETURN: The Btype associated with the Op.
|
|
*
|
|
* DESCRIPTION: Get the (bitfield) ACPI type associated with the parse node.
|
|
* Handles the case where the node is a name or method call and
|
|
* the actual type must be obtained from the namespace node.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static UINT32
|
|
AnGetBtype (
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
ACPI_PARSE_OBJECT *ReferencedNode;
|
|
UINT32 ThisNodeBtype = 0;
|
|
|
|
|
|
if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) ||
|
|
(Op->Asl.ParseOpcode == PARSEOP_METHODCALL))
|
|
{
|
|
Node = Op->Asl.Node;
|
|
if (!Node)
|
|
{
|
|
DbgPrint (ASL_DEBUG_OUTPUT,
|
|
"No attached Nsnode: [%s] at line %u name [%s], ignoring typecheck\n",
|
|
Op->Asl.ParseOpName, Op->Asl.LineNumber,
|
|
Op->Asl.ExternalName);
|
|
return ACPI_UINT32_MAX;
|
|
}
|
|
|
|
ThisNodeBtype = AnMapEtypeToBtype (Node->Type);
|
|
if (!ThisNodeBtype)
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op,
|
|
"could not map type");
|
|
}
|
|
|
|
/*
|
|
* Since it was a named reference, enable the
|
|
* reference bit also
|
|
*/
|
|
ThisNodeBtype |= ACPI_BTYPE_REFERENCE;
|
|
|
|
if (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)
|
|
{
|
|
ReferencedNode = Node->Op;
|
|
if (!ReferencedNode)
|
|
{
|
|
/* Check for an internal method */
|
|
|
|
if (AnIsInternalMethod (Op))
|
|
{
|
|
return (AnGetInternalMethodReturnType (Op));
|
|
}
|
|
|
|
AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op,
|
|
"null Op pointer");
|
|
return ACPI_UINT32_MAX;
|
|
}
|
|
|
|
if (ReferencedNode->Asl.CompileFlags & NODE_METHOD_TYPED)
|
|
{
|
|
ThisNodeBtype = ReferencedNode->Asl.AcpiBtype;
|
|
}
|
|
else
|
|
{
|
|
return (ACPI_UINT32_MAX -1);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ThisNodeBtype = Op->Asl.AcpiBtype;
|
|
}
|
|
|
|
return (ThisNodeBtype);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnMapObjTypeToBtype
|
|
*
|
|
* PARAMETERS: Op - A parse node
|
|
*
|
|
* RETURN: A Btype
|
|
*
|
|
* DESCRIPTION: Map object to the associated "Btype"
|
|
*
|
|
******************************************************************************/
|
|
|
|
static UINT32
|
|
AnMapObjTypeToBtype (
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
|
|
switch (Op->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_OBJECTTYPE_BFF: /* "BuffFieldObj" */
|
|
return (ACPI_BTYPE_BUFFER_FIELD);
|
|
|
|
case PARSEOP_OBJECTTYPE_BUF: /* "BuffObj" */
|
|
return (ACPI_BTYPE_BUFFER);
|
|
|
|
case PARSEOP_OBJECTTYPE_DDB: /* "DDBHandleObj" */
|
|
return (ACPI_BTYPE_DDB_HANDLE);
|
|
|
|
case PARSEOP_OBJECTTYPE_DEV: /* "DeviceObj" */
|
|
return (ACPI_BTYPE_DEVICE);
|
|
|
|
case PARSEOP_OBJECTTYPE_EVT: /* "EventObj" */
|
|
return (ACPI_BTYPE_EVENT);
|
|
|
|
case PARSEOP_OBJECTTYPE_FLD: /* "FieldUnitObj" */
|
|
return (ACPI_BTYPE_FIELD_UNIT);
|
|
|
|
case PARSEOP_OBJECTTYPE_INT: /* "IntObj" */
|
|
return (ACPI_BTYPE_INTEGER);
|
|
|
|
case PARSEOP_OBJECTTYPE_MTH: /* "MethodObj" */
|
|
return (ACPI_BTYPE_METHOD);
|
|
|
|
case PARSEOP_OBJECTTYPE_MTX: /* "MutexObj" */
|
|
return (ACPI_BTYPE_MUTEX);
|
|
|
|
case PARSEOP_OBJECTTYPE_OPR: /* "OpRegionObj" */
|
|
return (ACPI_BTYPE_REGION);
|
|
|
|
case PARSEOP_OBJECTTYPE_PKG: /* "PkgObj" */
|
|
return (ACPI_BTYPE_PACKAGE);
|
|
|
|
case PARSEOP_OBJECTTYPE_POW: /* "PowerResObj" */
|
|
return (ACPI_BTYPE_POWER);
|
|
|
|
case PARSEOP_OBJECTTYPE_STR: /* "StrObj" */
|
|
return (ACPI_BTYPE_STRING);
|
|
|
|
case PARSEOP_OBJECTTYPE_THZ: /* "ThermalZoneObj" */
|
|
return (ACPI_BTYPE_THERMAL);
|
|
|
|
case PARSEOP_OBJECTTYPE_UNK: /* "UnknownObj" */
|
|
return (ACPI_BTYPE_OBJECTS_AND_REFS);
|
|
|
|
default:
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnMethodAnalysisWalkBegin
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Descending callback for the analysis walk. Check methods for:
|
|
* 1) Initialized local variables
|
|
* 2) Valid arguments
|
|
* 3) Return types
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AnMethodAnalysisWalkBegin (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
ASL_ANALYSIS_WALK_INFO *WalkInfo = (ASL_ANALYSIS_WALK_INFO *) Context;
|
|
ASL_METHOD_INFO *MethodInfo = WalkInfo->MethodStack;
|
|
ACPI_PARSE_OBJECT *Next;
|
|
UINT32 RegisterNumber;
|
|
UINT32 i;
|
|
char LocalName[] = "Local0";
|
|
char ArgName[] = "Arg0";
|
|
ACPI_PARSE_OBJECT *ArgNode;
|
|
ACPI_PARSE_OBJECT *NextType;
|
|
ACPI_PARSE_OBJECT *NextParamType;
|
|
UINT8 ActualArgs = 0;
|
|
|
|
|
|
switch (Op->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_METHOD:
|
|
|
|
TotalMethods++;
|
|
|
|
/* Create and init method info */
|
|
|
|
MethodInfo = UtLocalCalloc (sizeof (ASL_METHOD_INFO));
|
|
MethodInfo->Next = WalkInfo->MethodStack;
|
|
MethodInfo->Op = Op;
|
|
|
|
WalkInfo->MethodStack = MethodInfo;
|
|
|
|
/* Get the name node, ignored here */
|
|
|
|
Next = Op->Asl.Child;
|
|
|
|
/* Get the NumArguments node */
|
|
|
|
Next = Next->Asl.Next;
|
|
MethodInfo->NumArguments = (UINT8)
|
|
(((UINT8) Next->Asl.Value.Integer) & 0x07);
|
|
|
|
/* Get the SerializeRule and SyncLevel nodes, ignored here */
|
|
|
|
Next = Next->Asl.Next;
|
|
Next = Next->Asl.Next;
|
|
ArgNode = Next;
|
|
|
|
/* Get the ReturnType node */
|
|
|
|
Next = Next->Asl.Next;
|
|
|
|
NextType = Next->Asl.Child;
|
|
while (NextType)
|
|
{
|
|
/* Get and map each of the ReturnTypes */
|
|
|
|
MethodInfo->ValidReturnTypes |= AnMapObjTypeToBtype (NextType);
|
|
NextType->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
|
|
NextType = NextType->Asl.Next;
|
|
}
|
|
|
|
/* Get the ParameterType node */
|
|
|
|
Next = Next->Asl.Next;
|
|
|
|
NextType = Next->Asl.Child;
|
|
while (NextType)
|
|
{
|
|
if (NextType->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
|
|
{
|
|
NextParamType = NextType->Asl.Child;
|
|
while (NextParamType)
|
|
{
|
|
MethodInfo->ValidArgTypes[ActualArgs] |= AnMapObjTypeToBtype (NextParamType);
|
|
NextParamType->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
|
|
NextParamType = NextParamType->Asl.Next;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
MethodInfo->ValidArgTypes[ActualArgs] =
|
|
AnMapObjTypeToBtype (NextType);
|
|
NextType->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
|
|
ActualArgs++;
|
|
}
|
|
|
|
NextType = NextType->Asl.Next;
|
|
}
|
|
|
|
if ((MethodInfo->NumArguments) &&
|
|
(MethodInfo->NumArguments != ActualArgs))
|
|
{
|
|
/* error: Param list did not match number of args */
|
|
}
|
|
|
|
/* Allow numarguments == 0 for Function() */
|
|
|
|
if ((!MethodInfo->NumArguments) && (ActualArgs))
|
|
{
|
|
MethodInfo->NumArguments = ActualArgs;
|
|
ArgNode->Asl.Value.Integer |= ActualArgs;
|
|
}
|
|
|
|
/*
|
|
* Actual arguments are initialized at method entry.
|
|
* All other ArgX "registers" can be used as locals, so we
|
|
* track their initialization.
|
|
*/
|
|
for (i = 0; i < MethodInfo->NumArguments; i++)
|
|
{
|
|
MethodInfo->ArgInitialized[i] = TRUE;
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_METHODCALL:
|
|
|
|
if (MethodInfo &&
|
|
(Op->Asl.Node == MethodInfo->Op->Asl.Node))
|
|
{
|
|
AslError (ASL_REMARK, ASL_MSG_RECURSION, Op, Op->Asl.ExternalName);
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_LOCAL0:
|
|
case PARSEOP_LOCAL1:
|
|
case PARSEOP_LOCAL2:
|
|
case PARSEOP_LOCAL3:
|
|
case PARSEOP_LOCAL4:
|
|
case PARSEOP_LOCAL5:
|
|
case PARSEOP_LOCAL6:
|
|
case PARSEOP_LOCAL7:
|
|
|
|
if (!MethodInfo)
|
|
{
|
|
/*
|
|
* Local was used outside a control method, or there was an error
|
|
* in the method declaration.
|
|
*/
|
|
AslError (ASL_REMARK, ASL_MSG_LOCAL_OUTSIDE_METHOD, Op, Op->Asl.ExternalName);
|
|
return (AE_ERROR);
|
|
}
|
|
|
|
RegisterNumber = (Op->Asl.AmlOpcode & 0x000F);
|
|
|
|
/*
|
|
* If the local is being used as a target, mark the local
|
|
* initialized
|
|
*/
|
|
if (Op->Asl.CompileFlags & NODE_IS_TARGET)
|
|
{
|
|
MethodInfo->LocalInitialized[RegisterNumber] = TRUE;
|
|
}
|
|
|
|
/*
|
|
* Otherwise, this is a reference, check if the local
|
|
* has been previously initialized.
|
|
*
|
|
* The only operator that accepts an uninitialized value is ObjectType()
|
|
*/
|
|
else if ((!MethodInfo->LocalInitialized[RegisterNumber]) &&
|
|
(Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_OBJECTTYPE))
|
|
{
|
|
LocalName[strlen (LocalName) -1] = (char) (RegisterNumber + 0x30);
|
|
AslError (ASL_ERROR, ASL_MSG_LOCAL_INIT, Op, LocalName);
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_ARG0:
|
|
case PARSEOP_ARG1:
|
|
case PARSEOP_ARG2:
|
|
case PARSEOP_ARG3:
|
|
case PARSEOP_ARG4:
|
|
case PARSEOP_ARG5:
|
|
case PARSEOP_ARG6:
|
|
|
|
if (!MethodInfo)
|
|
{
|
|
/*
|
|
* Arg was used outside a control method, or there was an error
|
|
* in the method declaration.
|
|
*/
|
|
AslError (ASL_REMARK, ASL_MSG_LOCAL_OUTSIDE_METHOD, Op, Op->Asl.ExternalName);
|
|
return (AE_ERROR);
|
|
}
|
|
|
|
RegisterNumber = (Op->Asl.AmlOpcode & 0x000F) - 8;
|
|
ArgName[strlen (ArgName) -1] = (char) (RegisterNumber + 0x30);
|
|
|
|
/*
|
|
* If the Arg is being used as a target, mark the local
|
|
* initialized
|
|
*/
|
|
if (Op->Asl.CompileFlags & NODE_IS_TARGET)
|
|
{
|
|
MethodInfo->ArgInitialized[RegisterNumber] = TRUE;
|
|
}
|
|
|
|
/*
|
|
* Otherwise, this is a reference, check if the Arg
|
|
* has been previously initialized.
|
|
*
|
|
* The only operator that accepts an uninitialized value is ObjectType()
|
|
*/
|
|
else if ((!MethodInfo->ArgInitialized[RegisterNumber]) &&
|
|
(Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_OBJECTTYPE))
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_ARG_INIT, Op, ArgName);
|
|
}
|
|
|
|
/* Flag this arg if it is not a "real" argument to the method */
|
|
|
|
if (RegisterNumber >= MethodInfo->NumArguments)
|
|
{
|
|
AslError (ASL_REMARK, ASL_MSG_NOT_PARAMETER, Op, ArgName);
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_RETURN:
|
|
|
|
if (!MethodInfo)
|
|
{
|
|
/*
|
|
* Probably was an error in the method declaration,
|
|
* no additional error here
|
|
*/
|
|
ACPI_WARNING ((AE_INFO, "%p, No parent method", Op));
|
|
return (AE_ERROR);
|
|
}
|
|
|
|
/* Child indicates a return value */
|
|
|
|
if ((Op->Asl.Child) &&
|
|
(Op->Asl.Child->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG))
|
|
{
|
|
MethodInfo->NumReturnWithValue++;
|
|
}
|
|
else
|
|
{
|
|
MethodInfo->NumReturnNoValue++;
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_BREAK:
|
|
case PARSEOP_CONTINUE:
|
|
|
|
Next = Op->Asl.Parent;
|
|
while (Next)
|
|
{
|
|
if (Next->Asl.ParseOpcode == PARSEOP_WHILE)
|
|
{
|
|
break;
|
|
}
|
|
Next = Next->Asl.Parent;
|
|
}
|
|
|
|
if (!Next)
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_NO_WHILE, Op, NULL);
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_STALL:
|
|
|
|
/* We can range check if the argument is an integer */
|
|
|
|
if ((Op->Asl.Child->Asl.ParseOpcode == PARSEOP_INTEGER) &&
|
|
(Op->Asl.Child->Asl.Value.Integer > ACPI_UINT8_MAX))
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_INVALID_TIME, Op, NULL);
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_DEVICE:
|
|
case PARSEOP_EVENT:
|
|
case PARSEOP_MUTEX:
|
|
case PARSEOP_OPERATIONREGION:
|
|
case PARSEOP_POWERRESOURCE:
|
|
case PARSEOP_PROCESSOR:
|
|
case PARSEOP_THERMALZONE:
|
|
|
|
/*
|
|
* The first operand is a name to be created in the namespace.
|
|
* Check against the reserved list.
|
|
*/
|
|
i = ApCheckForPredefinedName (Op, Op->Asl.NameSeg);
|
|
if (i < ACPI_VALID_RESERVED_NAME_MAX)
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_RESERVED_USE, Op, Op->Asl.ExternalName);
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_NAME:
|
|
|
|
/* Typecheck any predefined names statically defined with Name() */
|
|
|
|
ApCheckForPredefinedObject (Op, Op->Asl.NameSeg);
|
|
|
|
/* Special typechecking for _HID */
|
|
|
|
if (!ACPI_STRCMP (METHOD_NAME__HID, Op->Asl.NameSeg))
|
|
{
|
|
Next = Op->Asl.Child->Asl.Next;
|
|
if (Next->Asl.ParseOpcode == PARSEOP_STRING_LITERAL)
|
|
{
|
|
/*
|
|
* _HID is a string, all characters must be alphanumeric.
|
|
* One of the things we want to catch here is the use of
|
|
* a leading asterisk in the string.
|
|
*/
|
|
for (i = 0; Next->Asl.Value.String[i]; i++)
|
|
{
|
|
if (!isalnum ((int) Next->Asl.Value.String[i]))
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_ALPHANUMERIC_STRING,
|
|
Next, Next->Asl.Value.String);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnLastStatementIsReturn
|
|
*
|
|
* PARAMETERS: Op - A method parse node
|
|
*
|
|
* RETURN: TRUE if last statement is an ASL RETURN. False otherwise
|
|
*
|
|
* DESCRIPTION: Walk down the list of top level statements within a method
|
|
* to find the last one. Check if that last statement is in
|
|
* fact a RETURN statement.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static BOOLEAN
|
|
AnLastStatementIsReturn (
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_PARSE_OBJECT *Next;
|
|
|
|
|
|
/*
|
|
* Check if last statement is a return
|
|
*/
|
|
Next = ASL_GET_CHILD_NODE (Op);
|
|
while (Next)
|
|
{
|
|
if ((!Next->Asl.Next) &&
|
|
(Next->Asl.ParseOpcode == PARSEOP_RETURN))
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
Next = ASL_GET_PEER_NODE (Next);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnMethodAnalysisWalkEnd
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Ascending callback for analysis walk. Complete method
|
|
* return analysis.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AnMethodAnalysisWalkEnd (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
ASL_ANALYSIS_WALK_INFO *WalkInfo = (ASL_ANALYSIS_WALK_INFO *) Context;
|
|
ASL_METHOD_INFO *MethodInfo = WalkInfo->MethodStack;
|
|
|
|
|
|
switch (Op->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_METHOD:
|
|
case PARSEOP_RETURN:
|
|
if (!MethodInfo)
|
|
{
|
|
printf ("No method info for method! [%s]\n", Op->Asl.Namepath);
|
|
AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op,
|
|
"No method info for this method");
|
|
CmCleanupAndExit ();
|
|
return (AE_AML_INTERNAL);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (Op->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_METHOD:
|
|
|
|
WalkInfo->MethodStack = MethodInfo->Next;
|
|
|
|
/*
|
|
* Check if there is no return statement at the end of the
|
|
* method AND we can actually get there -- i.e., the execution
|
|
* of the method can possibly terminate without a return statement.
|
|
*/
|
|
if ((!AnLastStatementIsReturn (Op)) &&
|
|
(!(Op->Asl.CompileFlags & NODE_HAS_NO_EXIT)))
|
|
{
|
|
/*
|
|
* No return statement, and execution can possibly exit
|
|
* via this path. This is equivalent to Return ()
|
|
*/
|
|
MethodInfo->NumReturnNoValue++;
|
|
}
|
|
|
|
/*
|
|
* Check for case where some return statements have a return value
|
|
* and some do not. Exit without a return statement is a return with
|
|
* no value
|
|
*/
|
|
if (MethodInfo->NumReturnNoValue &&
|
|
MethodInfo->NumReturnWithValue)
|
|
{
|
|
AslError (ASL_WARNING, ASL_MSG_RETURN_TYPES, Op,
|
|
Op->Asl.ExternalName);
|
|
}
|
|
|
|
/*
|
|
* If there are any RETURN() statements with no value, or there is a
|
|
* control path that allows the method to exit without a return value,
|
|
* we mark the method as a method that does not return a value. This
|
|
* knowledge can be used to check method invocations that expect a
|
|
* returned value.
|
|
*/
|
|
if (MethodInfo->NumReturnNoValue)
|
|
{
|
|
if (MethodInfo->NumReturnWithValue)
|
|
{
|
|
Op->Asl.CompileFlags |= NODE_METHOD_SOME_NO_RETVAL;
|
|
}
|
|
else
|
|
{
|
|
Op->Asl.CompileFlags |= NODE_METHOD_NO_RETVAL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check predefined method names for correct return behavior
|
|
* and correct number of arguments
|
|
*/
|
|
ApCheckForPredefinedMethod (Op, MethodInfo);
|
|
ACPI_FREE (MethodInfo);
|
|
break;
|
|
|
|
|
|
case PARSEOP_RETURN:
|
|
|
|
/*
|
|
* If the parent is a predefined method name, attempt to typecheck
|
|
* the return value. Only static types can be validated.
|
|
*/
|
|
ApCheckPredefinedReturnValue (Op, MethodInfo);
|
|
|
|
/*
|
|
* The parent block does not "exit" and continue execution -- the
|
|
* method is terminated here with the Return() statement.
|
|
*/
|
|
Op->Asl.Parent->Asl.CompileFlags |= NODE_HAS_NO_EXIT;
|
|
|
|
/* Used in the "typing" pass later */
|
|
|
|
Op->Asl.ParentMethod = MethodInfo->Op;
|
|
|
|
/*
|
|
* If there is a peer node after the return statement, then this
|
|
* node is unreachable code -- i.e., it won't be executed because of
|
|
* the preceeding Return() statement.
|
|
*/
|
|
if (Op->Asl.Next)
|
|
{
|
|
AslError (ASL_WARNING, ASL_MSG_UNREACHABLE_CODE, Op->Asl.Next, NULL);
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_IF:
|
|
|
|
if ((Op->Asl.CompileFlags & NODE_HAS_NO_EXIT) &&
|
|
(Op->Asl.Next) &&
|
|
(Op->Asl.Next->Asl.ParseOpcode == PARSEOP_ELSE))
|
|
{
|
|
/*
|
|
* This IF has a corresponding ELSE. The IF block has no exit,
|
|
* (it contains an unconditional Return)
|
|
* mark the ELSE block to remember this fact.
|
|
*/
|
|
Op->Asl.Next->Asl.CompileFlags |= NODE_IF_HAS_NO_EXIT;
|
|
}
|
|
break;
|
|
|
|
|
|
case PARSEOP_ELSE:
|
|
|
|
if ((Op->Asl.CompileFlags & NODE_HAS_NO_EXIT) &&
|
|
(Op->Asl.CompileFlags & NODE_IF_HAS_NO_EXIT))
|
|
{
|
|
/*
|
|
* This ELSE block has no exit and the corresponding IF block
|
|
* has no exit either. Therefore, the parent node has no exit.
|
|
*/
|
|
Op->Asl.Parent->Asl.CompileFlags |= NODE_HAS_NO_EXIT;
|
|
}
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
if ((Op->Asl.CompileFlags & NODE_HAS_NO_EXIT) &&
|
|
(Op->Asl.Parent))
|
|
{
|
|
/* If this node has no exit, then the parent has no exit either */
|
|
|
|
Op->Asl.Parent->Asl.CompileFlags |= NODE_HAS_NO_EXIT;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnMethodTypingWalkBegin
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Descending callback for the typing walk.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AnMethodTypingWalkBegin (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnMethodTypingWalkEnd
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Ascending callback for typing walk. Complete the method
|
|
* return analysis. Check methods for:
|
|
* 1) Initialized local variables
|
|
* 2) Valid arguments
|
|
* 3) Return types
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AnMethodTypingWalkEnd (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
UINT32 ThisNodeBtype;
|
|
|
|
|
|
switch (Op->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_METHOD:
|
|
|
|
Op->Asl.CompileFlags |= NODE_METHOD_TYPED;
|
|
break;
|
|
|
|
case PARSEOP_RETURN:
|
|
|
|
if ((Op->Asl.Child) &&
|
|
(Op->Asl.Child->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG))
|
|
{
|
|
ThisNodeBtype = AnGetBtype (Op->Asl.Child);
|
|
|
|
if ((Op->Asl.Child->Asl.ParseOpcode == PARSEOP_METHODCALL) &&
|
|
(ThisNodeBtype == (ACPI_UINT32_MAX -1)))
|
|
{
|
|
/*
|
|
* The called method is untyped at this time (typically a
|
|
* forward reference).
|
|
*
|
|
* Check for a recursive method call first.
|
|
*/
|
|
if (Op->Asl.ParentMethod != Op->Asl.Child->Asl.Node->Op)
|
|
{
|
|
/* We must type the method here */
|
|
|
|
TrWalkParseTree (Op->Asl.Child->Asl.Node->Op,
|
|
ASL_WALK_VISIT_TWICE, AnMethodTypingWalkBegin,
|
|
AnMethodTypingWalkEnd, NULL);
|
|
|
|
ThisNodeBtype = AnGetBtype (Op->Asl.Child);
|
|
}
|
|
}
|
|
|
|
/* Returns a value, save the value type */
|
|
|
|
if (Op->Asl.ParentMethod)
|
|
{
|
|
Op->Asl.ParentMethod->Asl.AcpiBtype |= ThisNodeBtype;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnCheckMethodReturnValue
|
|
*
|
|
* PARAMETERS: Op - Parent
|
|
* OpInfo - Parent info
|
|
* ArgOp - Method invocation op
|
|
* RequiredBtypes - What caller requires
|
|
* ThisNodeBtype - What this node returns (if anything)
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Check a method invocation for 1) A return value and if it does
|
|
* in fact return a value, 2) check the type of the return value.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
AnCheckMethodReturnValue (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
const ACPI_OPCODE_INFO *OpInfo,
|
|
ACPI_PARSE_OBJECT *ArgOp,
|
|
UINT32 RequiredBtypes,
|
|
UINT32 ThisNodeBtype)
|
|
{
|
|
ACPI_PARSE_OBJECT *OwningOp;
|
|
ACPI_NAMESPACE_NODE *Node;
|
|
|
|
|
|
Node = ArgOp->Asl.Node;
|
|
|
|
|
|
/* Examine the parent op of this method */
|
|
|
|
OwningOp = Node->Op;
|
|
if (OwningOp->Asl.CompileFlags & NODE_METHOD_NO_RETVAL)
|
|
{
|
|
/* Method NEVER returns a value */
|
|
|
|
AslError (ASL_ERROR, ASL_MSG_NO_RETVAL, Op, Op->Asl.ExternalName);
|
|
}
|
|
else if (OwningOp->Asl.CompileFlags & NODE_METHOD_SOME_NO_RETVAL)
|
|
{
|
|
/* Method SOMETIMES returns a value, SOMETIMES not */
|
|
|
|
AslError (ASL_WARNING, ASL_MSG_SOME_NO_RETVAL, Op, Op->Asl.ExternalName);
|
|
}
|
|
else if (!(ThisNodeBtype & RequiredBtypes))
|
|
{
|
|
/* Method returns a value, but the type is wrong */
|
|
|
|
AnFormatBtype (StringBuffer, ThisNodeBtype);
|
|
AnFormatBtype (StringBuffer2, RequiredBtypes);
|
|
|
|
|
|
/*
|
|
* The case where the method does not return any value at all
|
|
* was already handled in the namespace cross reference
|
|
* -- Only issue an error if the method in fact returns a value,
|
|
* but it is of the wrong type
|
|
*/
|
|
if (ThisNodeBtype != 0)
|
|
{
|
|
sprintf (MsgBuffer,
|
|
"Method returns [%s], %s operator requires [%s]",
|
|
StringBuffer, OpInfo->Name, StringBuffer2);
|
|
|
|
AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, MsgBuffer);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnOperandTypecheckWalkBegin
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Descending callback for the analysis walk. Check methods for:
|
|
* 1) Initialized local variables
|
|
* 2) Valid arguments
|
|
* 3) Return types
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AnOperandTypecheckWalkBegin (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnOperandTypecheckWalkEnd
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Ascending callback for analysis walk. Complete method
|
|
* return analysis.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AnOperandTypecheckWalkEnd (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
const ACPI_OPCODE_INFO *OpInfo;
|
|
UINT32 RuntimeArgTypes;
|
|
UINT32 RuntimeArgTypes2;
|
|
UINT32 RequiredBtypes;
|
|
UINT32 ThisNodeBtype;
|
|
UINT32 CommonBtypes;
|
|
UINT32 OpcodeClass;
|
|
ACPI_PARSE_OBJECT *ArgOp;
|
|
UINT32 ArgType;
|
|
|
|
|
|
switch (Op->Asl.AmlOpcode)
|
|
{
|
|
case AML_RAW_DATA_BYTE:
|
|
case AML_RAW_DATA_WORD:
|
|
case AML_RAW_DATA_DWORD:
|
|
case AML_RAW_DATA_QWORD:
|
|
case AML_RAW_DATA_BUFFER:
|
|
case AML_RAW_DATA_CHAIN:
|
|
case AML_PACKAGE_LENGTH:
|
|
case AML_UNASSIGNED_OPCODE:
|
|
case AML_DEFAULT_ARG_OP:
|
|
|
|
/* Ignore the internal (compiler-only) AML opcodes */
|
|
|
|
return (AE_OK);
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
|
|
if (!OpInfo)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
ArgOp = Op->Asl.Child;
|
|
RuntimeArgTypes = OpInfo->RuntimeArgs;
|
|
OpcodeClass = OpInfo->Class;
|
|
|
|
#ifdef ASL_ERROR_NAMED_OBJECT_IN_WHILE
|
|
/*
|
|
* Update 11/2008: In practice, we can't perform this check. A simple
|
|
* analysis is not sufficient. Also, it can cause errors when compiling
|
|
* disassembled code because of the way Switch operators are implemented
|
|
* (a While(One) loop with a named temp variable created within.)
|
|
*/
|
|
|
|
/*
|
|
* If we are creating a named object, check if we are within a while loop
|
|
* by checking if the parent is a WHILE op. This is a simple analysis, but
|
|
* probably sufficient for many cases.
|
|
*
|
|
* Allow Scope(), Buffer(), and Package().
|
|
*/
|
|
if (((OpcodeClass == AML_CLASS_NAMED_OBJECT) && (Op->Asl.AmlOpcode != AML_SCOPE_OP)) ||
|
|
((OpcodeClass == AML_CLASS_CREATE) && (OpInfo->Flags & AML_NSNODE)))
|
|
{
|
|
if (Op->Asl.Parent->Asl.AmlOpcode == AML_WHILE_OP)
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_NAMED_OBJECT_IN_WHILE, Op, NULL);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Special case for control opcodes IF/RETURN/WHILE since they
|
|
* have no runtime arg list (at this time)
|
|
*/
|
|
switch (Op->Asl.AmlOpcode)
|
|
{
|
|
case AML_IF_OP:
|
|
case AML_WHILE_OP:
|
|
case AML_RETURN_OP:
|
|
|
|
if (ArgOp->Asl.ParseOpcode == PARSEOP_METHODCALL)
|
|
{
|
|
/* Check for an internal method */
|
|
|
|
if (AnIsInternalMethod (ArgOp))
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* The lone arg is a method call, check it */
|
|
|
|
RequiredBtypes = AnMapArgTypeToBtype (ARGI_INTEGER);
|
|
if (Op->Asl.AmlOpcode == AML_RETURN_OP)
|
|
{
|
|
RequiredBtypes = 0xFFFFFFFF;
|
|
}
|
|
|
|
ThisNodeBtype = AnGetBtype (ArgOp);
|
|
if (ThisNodeBtype == ACPI_UINT32_MAX)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
AnCheckMethodReturnValue (Op, OpInfo, ArgOp,
|
|
RequiredBtypes, ThisNodeBtype);
|
|
}
|
|
return (AE_OK);
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Ignore the non-executable opcodes */
|
|
|
|
if (RuntimeArgTypes == ARGI_INVALID_OPCODE)
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
switch (OpcodeClass)
|
|
{
|
|
case AML_CLASS_EXECUTE:
|
|
case AML_CLASS_CREATE:
|
|
case AML_CLASS_CONTROL:
|
|
case AML_CLASS_RETURN_VALUE:
|
|
|
|
/* TBD: Change class or fix typechecking for these */
|
|
|
|
if ((Op->Asl.AmlOpcode == AML_BUFFER_OP) ||
|
|
(Op->Asl.AmlOpcode == AML_PACKAGE_OP) ||
|
|
(Op->Asl.AmlOpcode == AML_VAR_PACKAGE_OP))
|
|
{
|
|
break;
|
|
}
|
|
|
|
/* Reverse the runtime argument list */
|
|
|
|
RuntimeArgTypes2 = 0;
|
|
while ((ArgType = GET_CURRENT_ARG_TYPE (RuntimeArgTypes)))
|
|
{
|
|
RuntimeArgTypes2 <<= ARG_TYPE_WIDTH;
|
|
RuntimeArgTypes2 |= ArgType;
|
|
INCREMENT_ARG_LIST (RuntimeArgTypes);
|
|
}
|
|
|
|
while ((ArgType = GET_CURRENT_ARG_TYPE (RuntimeArgTypes2)))
|
|
{
|
|
RequiredBtypes = AnMapArgTypeToBtype (ArgType);
|
|
|
|
ThisNodeBtype = AnGetBtype (ArgOp);
|
|
if (ThisNodeBtype == ACPI_UINT32_MAX)
|
|
{
|
|
goto NextArgument;
|
|
}
|
|
|
|
/* Examine the arg based on the required type of the arg */
|
|
|
|
switch (ArgType)
|
|
{
|
|
case ARGI_TARGETREF:
|
|
|
|
if (ArgOp->Asl.ParseOpcode == PARSEOP_ZERO)
|
|
{
|
|
/* ZERO is the placeholder for "don't store result" */
|
|
|
|
ThisNodeBtype = RequiredBtypes;
|
|
break;
|
|
}
|
|
|
|
if (ArgOp->Asl.ParseOpcode == PARSEOP_INTEGER)
|
|
{
|
|
/*
|
|
* This is the case where an original reference to a resource
|
|
* descriptor field has been replaced by an (Integer) offset.
|
|
* These named fields are supported at compile-time only;
|
|
* the names are not passed to the interpreter (via the AML).
|
|
*/
|
|
if ((ArgOp->Asl.Node->Type == ACPI_TYPE_LOCAL_RESOURCE_FIELD) ||
|
|
(ArgOp->Asl.Node->Type == ACPI_TYPE_LOCAL_RESOURCE))
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_RESOURCE_FIELD, ArgOp, NULL);
|
|
}
|
|
else
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, NULL);
|
|
}
|
|
break;
|
|
}
|
|
|
|
if ((ArgOp->Asl.ParseOpcode == PARSEOP_METHODCALL) ||
|
|
(ArgOp->Asl.ParseOpcode == PARSEOP_DEREFOF))
|
|
{
|
|
break;
|
|
}
|
|
|
|
ThisNodeBtype = RequiredBtypes;
|
|
break;
|
|
|
|
|
|
case ARGI_REFERENCE: /* References */
|
|
case ARGI_INTEGER_REF:
|
|
case ARGI_OBJECT_REF:
|
|
case ARGI_DEVICE_REF:
|
|
|
|
switch (ArgOp->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_LOCAL0:
|
|
case PARSEOP_LOCAL1:
|
|
case PARSEOP_LOCAL2:
|
|
case PARSEOP_LOCAL3:
|
|
case PARSEOP_LOCAL4:
|
|
case PARSEOP_LOCAL5:
|
|
case PARSEOP_LOCAL6:
|
|
case PARSEOP_LOCAL7:
|
|
|
|
/* TBD: implement analysis of current value (type) of the local */
|
|
/* For now, just treat any local as a typematch */
|
|
|
|
/*ThisNodeBtype = RequiredBtypes;*/
|
|
break;
|
|
|
|
case PARSEOP_ARG0:
|
|
case PARSEOP_ARG1:
|
|
case PARSEOP_ARG2:
|
|
case PARSEOP_ARG3:
|
|
case PARSEOP_ARG4:
|
|
case PARSEOP_ARG5:
|
|
case PARSEOP_ARG6:
|
|
|
|
/* Hard to analyze argument types, sow we won't */
|
|
/* For now, just treat any arg as a typematch */
|
|
|
|
/* ThisNodeBtype = RequiredBtypes; */
|
|
break;
|
|
|
|
case PARSEOP_DEBUG:
|
|
break;
|
|
|
|
case PARSEOP_REFOF:
|
|
case PARSEOP_INDEX:
|
|
default:
|
|
break;
|
|
|
|
}
|
|
break;
|
|
|
|
case ARGI_INTEGER:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
|
|
CommonBtypes = ThisNodeBtype & RequiredBtypes;
|
|
|
|
if (ArgOp->Asl.ParseOpcode == PARSEOP_METHODCALL)
|
|
{
|
|
if (AnIsInternalMethod (ArgOp))
|
|
{
|
|
return (AE_OK);
|
|
}
|
|
|
|
/* Check a method call for a valid return value */
|
|
|
|
AnCheckMethodReturnValue (Op, OpInfo, ArgOp,
|
|
RequiredBtypes, ThisNodeBtype);
|
|
}
|
|
|
|
/*
|
|
* Now check if the actual type(s) match at least one
|
|
* bit to the required type
|
|
*/
|
|
else if (!CommonBtypes)
|
|
{
|
|
/* No match -- this is a type mismatch error */
|
|
|
|
AnFormatBtype (StringBuffer, ThisNodeBtype);
|
|
AnFormatBtype (StringBuffer2, RequiredBtypes);
|
|
|
|
sprintf (MsgBuffer, "[%s] found, %s operator requires [%s]",
|
|
StringBuffer, OpInfo->Name, StringBuffer2);
|
|
|
|
AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, MsgBuffer);
|
|
}
|
|
|
|
NextArgument:
|
|
ArgOp = ArgOp->Asl.Next;
|
|
INCREMENT_ARG_LIST (RuntimeArgTypes2);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnIsResultUsed
|
|
*
|
|
* PARAMETERS: Op - Parent op for the operator
|
|
*
|
|
* RETURN: TRUE if result from this operation is actually consumed
|
|
*
|
|
* DESCRIPTION: Determine if the function result value from an operator is
|
|
* used.
|
|
*
|
|
******************************************************************************/
|
|
|
|
BOOLEAN
|
|
AnIsResultUsed (
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_PARSE_OBJECT *Parent;
|
|
|
|
|
|
switch (Op->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_INCREMENT:
|
|
case PARSEOP_DECREMENT:
|
|
|
|
/* These are standalone operators, no return value */
|
|
|
|
return (TRUE);
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Examine parent to determine if the return value is used */
|
|
|
|
Parent = Op->Asl.Parent;
|
|
switch (Parent->Asl.ParseOpcode)
|
|
{
|
|
/* If/While - check if the operator is the predicate */
|
|
|
|
case PARSEOP_IF:
|
|
case PARSEOP_WHILE:
|
|
|
|
/* First child is the predicate */
|
|
|
|
if (Parent->Asl.Child == Op)
|
|
{
|
|
return (TRUE);
|
|
}
|
|
return (FALSE);
|
|
|
|
/* Not used if one of these is the parent */
|
|
|
|
case PARSEOP_METHOD:
|
|
case PARSEOP_DEFINITIONBLOCK:
|
|
case PARSEOP_ELSE:
|
|
|
|
return (FALSE);
|
|
|
|
default:
|
|
/* Any other type of parent means that the result is used */
|
|
|
|
return (TRUE);
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnOtherSemanticAnalysisWalkBegin
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Descending callback for the analysis walk. Checks for
|
|
* miscellaneous issues in the code.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AnOtherSemanticAnalysisWalkBegin (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
ACPI_PARSE_OBJECT *ArgNode;
|
|
ACPI_PARSE_OBJECT *PrevArgNode = NULL;
|
|
const ACPI_OPCODE_INFO *OpInfo;
|
|
|
|
|
|
OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode);
|
|
|
|
/*
|
|
* Determine if an execution class operator actually does something by
|
|
* checking if it has a target and/or the function return value is used.
|
|
* (Target is optional, so a standalone statement can actually do nothing.)
|
|
*/
|
|
if ((OpInfo->Class == AML_CLASS_EXECUTE) &&
|
|
(OpInfo->Flags & AML_HAS_RETVAL) &&
|
|
(!AnIsResultUsed (Op)))
|
|
{
|
|
if (OpInfo->Flags & AML_HAS_TARGET)
|
|
{
|
|
/*
|
|
* Find the target node, it is always the last child. If the traget
|
|
* is not specified in the ASL, a default node of type Zero was
|
|
* created by the parser.
|
|
*/
|
|
ArgNode = Op->Asl.Child;
|
|
while (ArgNode->Asl.Next)
|
|
{
|
|
PrevArgNode = ArgNode;
|
|
ArgNode = ArgNode->Asl.Next;
|
|
}
|
|
|
|
/* Divide() is the only weird case, it has two targets */
|
|
|
|
if (Op->Asl.AmlOpcode == AML_DIVIDE_OP)
|
|
{
|
|
if ((ArgNode->Asl.ParseOpcode == PARSEOP_ZERO) &&
|
|
(PrevArgNode->Asl.ParseOpcode == PARSEOP_ZERO))
|
|
{
|
|
AslError (ASL_WARNING, ASL_MSG_RESULT_NOT_USED, Op, Op->Asl.ExternalName);
|
|
}
|
|
}
|
|
else if (ArgNode->Asl.ParseOpcode == PARSEOP_ZERO)
|
|
{
|
|
AslError (ASL_WARNING, ASL_MSG_RESULT_NOT_USED, Op, Op->Asl.ExternalName);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/*
|
|
* Has no target and the result is not used. Only a couple opcodes
|
|
* can have this combination.
|
|
*/
|
|
switch (Op->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_ACQUIRE:
|
|
case PARSEOP_WAIT:
|
|
case PARSEOP_LOADTABLE:
|
|
break;
|
|
|
|
default:
|
|
AslError (ASL_WARNING, ASL_MSG_RESULT_NOT_USED, Op, Op->Asl.ExternalName);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Semantic checks for individual ASL operators
|
|
*/
|
|
switch (Op->Asl.ParseOpcode)
|
|
{
|
|
case PARSEOP_ACQUIRE:
|
|
case PARSEOP_WAIT:
|
|
/*
|
|
* Emit a warning if the timeout parameter for these operators is not
|
|
* ACPI_WAIT_FOREVER, and the result value from the operator is not
|
|
* checked, meaning that a timeout could happen, but the code
|
|
* would not know about it.
|
|
*/
|
|
|
|
/* First child is the namepath, 2nd child is timeout */
|
|
|
|
ArgNode = Op->Asl.Child;
|
|
ArgNode = ArgNode->Asl.Next;
|
|
|
|
/*
|
|
* Check for the WAIT_FOREVER case - defined by the ACPI spec to be
|
|
* 0xFFFF or greater
|
|
*/
|
|
if (((ArgNode->Asl.ParseOpcode == PARSEOP_WORDCONST) ||
|
|
(ArgNode->Asl.ParseOpcode == PARSEOP_INTEGER)) &&
|
|
(ArgNode->Asl.Value.Integer >= (UINT64) ACPI_WAIT_FOREVER))
|
|
{
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* The operation could timeout. If the return value is not used
|
|
* (indicates timeout occurred), issue a warning
|
|
*/
|
|
if (!AnIsResultUsed (Op))
|
|
{
|
|
AslError (ASL_WARNING, ASL_MSG_TIMEOUT, ArgNode, Op->Asl.ExternalName);
|
|
}
|
|
break;
|
|
|
|
case PARSEOP_CREATEFIELD:
|
|
/*
|
|
* Check for a zero Length (NumBits) operand. NumBits is the 3rd operand
|
|
*/
|
|
ArgNode = Op->Asl.Child;
|
|
ArgNode = ArgNode->Asl.Next;
|
|
ArgNode = ArgNode->Asl.Next;
|
|
|
|
if ((ArgNode->Asl.ParseOpcode == PARSEOP_ZERO) ||
|
|
((ArgNode->Asl.ParseOpcode == PARSEOP_INTEGER) &&
|
|
(ArgNode->Asl.Value.Integer == 0)))
|
|
{
|
|
AslError (ASL_ERROR, ASL_MSG_NON_ZERO, ArgNode, NULL);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnOtherSemanticAnalysisWalkEnd
|
|
*
|
|
* PARAMETERS: ASL_WALK_CALLBACK
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Ascending callback for analysis walk. Complete method
|
|
* return analysis.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AnOtherSemanticAnalysisWalkEnd (
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Level,
|
|
void *Context)
|
|
{
|
|
|
|
return AE_OK;
|
|
|
|
}
|
|
|
|
|
|
#ifdef ACPI_OBSOLETE_FUNCTIONS
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AnMapBtypeToEtype
|
|
*
|
|
* PARAMETERS: Btype - Bitfield of ACPI types
|
|
*
|
|
* RETURN: The Etype corresponding the the Btype
|
|
*
|
|
* DESCRIPTION: Convert a bitfield type to an encoded type
|
|
*
|
|
******************************************************************************/
|
|
|
|
UINT32
|
|
AnMapBtypeToEtype (
|
|
UINT32 Btype)
|
|
{
|
|
UINT32 i;
|
|
UINT32 Etype;
|
|
|
|
|
|
if (Btype == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
Etype = 1;
|
|
for (i = 1; i < Btype; i *= 2)
|
|
{
|
|
Etype++;
|
|
}
|
|
|
|
return (Etype);
|
|
}
|
|
#endif
|
|
|