1209 lines
37 KiB
C
1209 lines
37 KiB
C
/******************************************************************************
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*
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* Module Name: psloop - Main AML parse loop
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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 - 2009, 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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/*
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* Parse the AML and build an operation tree as most interpreters, (such as
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* Perl) do. Parsing is done by hand rather than with a YACC generated parser
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* to tightly constrain stack and dynamic memory usage. Parsing is kept
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* flexible and the code fairly compact by parsing based on a list of AML
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* opcode templates in AmlOpInfo[].
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*/
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#include <contrib/dev/acpica/include/acpi.h>
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#include <contrib/dev/acpica/include/accommon.h>
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#include <contrib/dev/acpica/include/acparser.h>
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#include <contrib/dev/acpica/include/acdispat.h>
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#include <contrib/dev/acpica/include/amlcode.h>
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#define _COMPONENT ACPI_PARSER
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ACPI_MODULE_NAME ("psloop")
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static UINT32 AcpiGbl_Depth = 0;
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/* Local prototypes */
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static ACPI_STATUS
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AcpiPsGetAmlOpcode (
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ACPI_WALK_STATE *WalkState);
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static ACPI_STATUS
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AcpiPsBuildNamedOp (
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ACPI_WALK_STATE *WalkState,
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UINT8 *AmlOpStart,
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ACPI_PARSE_OBJECT *UnnamedOp,
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ACPI_PARSE_OBJECT **Op);
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static ACPI_STATUS
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AcpiPsCreateOp (
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ACPI_WALK_STATE *WalkState,
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UINT8 *AmlOpStart,
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ACPI_PARSE_OBJECT **NewOp);
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static ACPI_STATUS
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AcpiPsGetArguments (
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ACPI_WALK_STATE *WalkState,
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UINT8 *AmlOpStart,
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ACPI_PARSE_OBJECT *Op);
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static ACPI_STATUS
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AcpiPsCompleteOp (
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ACPI_WALK_STATE *WalkState,
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ACPI_PARSE_OBJECT **Op,
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ACPI_STATUS Status);
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static ACPI_STATUS
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AcpiPsCompleteFinalOp (
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ACPI_WALK_STATE *WalkState,
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ACPI_PARSE_OBJECT *Op,
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ACPI_STATUS Status);
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsGetAmlOpcode
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*
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* PARAMETERS: WalkState - Current state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Extract the next AML opcode from the input stream.
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiPsGetAmlOpcode (
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_FUNCTION_TRACE_PTR (PsGetAmlOpcode, WalkState);
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WalkState->AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->ParserState.Aml,
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WalkState->ParserState.AmlStart);
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WalkState->Opcode = AcpiPsPeekOpcode (&(WalkState->ParserState));
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/*
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* First cut to determine what we have found:
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* 1) A valid AML opcode
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* 2) A name string
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* 3) An unknown/invalid opcode
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*/
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WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode);
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switch (WalkState->OpInfo->Class)
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{
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case AML_CLASS_ASCII:
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case AML_CLASS_PREFIX:
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/*
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* Starts with a valid prefix or ASCII char, this is a name
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* string. Convert the bare name string to a namepath.
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*/
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WalkState->Opcode = AML_INT_NAMEPATH_OP;
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WalkState->ArgTypes = ARGP_NAMESTRING;
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break;
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case AML_CLASS_UNKNOWN:
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/* The opcode is unrecognized. Just skip unknown opcodes */
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ACPI_ERROR ((AE_INFO,
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"Found unknown opcode %X at AML address %p offset %X, ignoring",
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WalkState->Opcode, WalkState->ParserState.Aml, WalkState->AmlOffset));
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ACPI_DUMP_BUFFER (WalkState->ParserState.Aml, 128);
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/* Assume one-byte bad opcode */
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WalkState->ParserState.Aml++;
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return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE);
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default:
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/* Found opcode info, this is a normal opcode */
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WalkState->ParserState.Aml += AcpiPsGetOpcodeSize (WalkState->Opcode);
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WalkState->ArgTypes = WalkState->OpInfo->ParseArgs;
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break;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsBuildNamedOp
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*
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* PARAMETERS: WalkState - Current state
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* AmlOpStart - Begin of named Op in AML
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* UnnamedOp - Early Op (not a named Op)
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* Op - Returned Op
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*
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* RETURN: Status
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*
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* DESCRIPTION: Parse a named Op
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiPsBuildNamedOp (
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ACPI_WALK_STATE *WalkState,
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UINT8 *AmlOpStart,
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ACPI_PARSE_OBJECT *UnnamedOp,
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ACPI_PARSE_OBJECT **Op)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_PARSE_OBJECT *Arg = NULL;
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ACPI_FUNCTION_TRACE_PTR (PsBuildNamedOp, WalkState);
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UnnamedOp->Common.Value.Arg = NULL;
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UnnamedOp->Common.ArgListLength = 0;
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UnnamedOp->Common.AmlOpcode = WalkState->Opcode;
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/*
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* Get and append arguments until we find the node that contains
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* the name (the type ARGP_NAME).
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*/
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while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) &&
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(GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) != ARGP_NAME))
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{
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Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState),
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GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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AcpiPsAppendArg (UnnamedOp, Arg);
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INCREMENT_ARG_LIST (WalkState->ArgTypes);
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}
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/*
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* Make sure that we found a NAME and didn't run out of arguments
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*/
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if (!GET_CURRENT_ARG_TYPE (WalkState->ArgTypes))
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{
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return_ACPI_STATUS (AE_AML_NO_OPERAND);
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}
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/* We know that this arg is a name, move to next arg */
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INCREMENT_ARG_LIST (WalkState->ArgTypes);
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/*
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* Find the object. This will either insert the object into
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* the namespace or simply look it up
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*/
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WalkState->Op = NULL;
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Status = WalkState->DescendingCallback (WalkState, Op);
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if (ACPI_FAILURE (Status))
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{
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ACPI_EXCEPTION ((AE_INFO, Status, "During name lookup/catalog"));
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return_ACPI_STATUS (Status);
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}
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if (!*Op)
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{
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return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE);
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}
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Status = AcpiPsNextParseState (WalkState, *Op, Status);
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if (ACPI_FAILURE (Status))
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{
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if (Status == AE_CTRL_PENDING)
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{
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return_ACPI_STATUS (AE_CTRL_PARSE_PENDING);
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}
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return_ACPI_STATUS (Status);
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}
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AcpiPsAppendArg (*Op, UnnamedOp->Common.Value.Arg);
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AcpiGbl_Depth++;
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if ((*Op)->Common.AmlOpcode == AML_REGION_OP ||
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(*Op)->Common.AmlOpcode == AML_DATA_REGION_OP)
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{
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/*
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* Defer final parsing of an OperationRegion body, because we don't
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* have enough info in the first pass to parse it correctly (i.e.,
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* there may be method calls within the TermArg elements of the body.)
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*
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* However, we must continue parsing because the opregion is not a
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* standalone package -- we don't know where the end is at this point.
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*
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* (Length is unknown until parse of the body complete)
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*/
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(*Op)->Named.Data = AmlOpStart;
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(*Op)->Named.Length = 0;
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}
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiPsCreateOp
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*
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* PARAMETERS: WalkState - Current state
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* AmlOpStart - Op start in AML
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* NewOp - Returned Op
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*
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* RETURN: Status
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*
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* DESCRIPTION: Get Op from AML
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*
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******************************************************************************/
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static ACPI_STATUS
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AcpiPsCreateOp (
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ACPI_WALK_STATE *WalkState,
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UINT8 *AmlOpStart,
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ACPI_PARSE_OBJECT **NewOp)
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{
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ACPI_STATUS Status = AE_OK;
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ACPI_PARSE_OBJECT *Op;
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ACPI_PARSE_OBJECT *NamedOp = NULL;
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ACPI_PARSE_OBJECT *ParentScope;
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UINT8 ArgumentCount;
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const ACPI_OPCODE_INFO *OpInfo;
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ACPI_FUNCTION_TRACE_PTR (PsCreateOp, WalkState);
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Status = AcpiPsGetAmlOpcode (WalkState);
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if (Status == AE_CTRL_PARSE_CONTINUE)
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{
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return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE);
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}
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/* Create Op structure and append to parent's argument list */
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WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode);
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Op = AcpiPsAllocOp (WalkState->Opcode);
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if (!Op)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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if (WalkState->OpInfo->Flags & AML_NAMED)
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{
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Status = AcpiPsBuildNamedOp (WalkState, AmlOpStart, Op, &NamedOp);
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AcpiPsFreeOp (Op);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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*NewOp = NamedOp;
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return_ACPI_STATUS (AE_OK);
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}
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/* Not a named opcode, just allocate Op and append to parent */
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if (WalkState->OpInfo->Flags & AML_CREATE)
|
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{
|
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/*
|
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* Backup to beginning of CreateXXXfield declaration
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* BodyLength is unknown until we parse the body
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*/
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Op->Named.Data = AmlOpStart;
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Op->Named.Length = 0;
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}
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if (WalkState->Opcode == AML_BANK_FIELD_OP)
|
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{
|
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/*
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* Backup to beginning of BankField declaration
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* BodyLength is unknown until we parse the body
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*/
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Op->Named.Data = AmlOpStart;
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Op->Named.Length = 0;
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}
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|
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ParentScope = AcpiPsGetParentScope (&(WalkState->ParserState));
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AcpiPsAppendArg (ParentScope, Op);
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|
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if (ParentScope)
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{
|
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OpInfo = AcpiPsGetOpcodeInfo (ParentScope->Common.AmlOpcode);
|
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if (OpInfo->Flags & AML_HAS_TARGET)
|
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{
|
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ArgumentCount = AcpiPsGetArgumentCount (OpInfo->Type);
|
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if (ParentScope->Common.ArgListLength > ArgumentCount)
|
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{
|
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Op->Common.Flags |= ACPI_PARSEOP_TARGET;
|
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}
|
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}
|
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else if (ParentScope->Common.AmlOpcode == AML_INCREMENT_OP)
|
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{
|
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Op->Common.Flags |= ACPI_PARSEOP_TARGET;
|
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}
|
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}
|
|
|
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if (WalkState->DescendingCallback != NULL)
|
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{
|
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/*
|
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* Find the object. This will either insert the object into
|
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* the namespace or simply look it up
|
|
*/
|
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WalkState->Op = *NewOp = Op;
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|
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Status = WalkState->DescendingCallback (WalkState, &Op);
|
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Status = AcpiPsNextParseState (WalkState, Op, Status);
|
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if (Status == AE_CTRL_PENDING)
|
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{
|
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Status = AE_CTRL_PARSE_PENDING;
|
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}
|
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}
|
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|
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return_ACPI_STATUS (Status);
|
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}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiPsGetArguments
|
|
*
|
|
* PARAMETERS: WalkState - Current state
|
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* AmlOpStart - Op start in AML
|
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* Op - Current Op
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get arguments for passed Op.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiPsGetArguments (
|
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ACPI_WALK_STATE *WalkState,
|
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UINT8 *AmlOpStart,
|
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ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_PARSE_OBJECT *Arg = NULL;
|
|
|
|
|
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ACPI_FUNCTION_TRACE_PTR (PsGetArguments, WalkState);
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|
|
|
|
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switch (Op->Common.AmlOpcode)
|
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{
|
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case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
|
|
case AML_WORD_OP: /* AML_WORDDATA_ARG */
|
|
case AML_DWORD_OP: /* AML_DWORDATA_ARG */
|
|
case AML_QWORD_OP: /* AML_QWORDATA_ARG */
|
|
case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */
|
|
|
|
/* Fill in constant or string argument directly */
|
|
|
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AcpiPsGetNextSimpleArg (&(WalkState->ParserState),
|
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GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), Op);
|
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break;
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|
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case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */
|
|
|
|
Status = AcpiPsGetNextNamepath (WalkState, &(WalkState->ParserState), Op, 1);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
WalkState->ArgTypes = 0;
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* Op is not a constant or string, append each argument to the Op
|
|
*/
|
|
while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) && !WalkState->ArgCount)
|
|
{
|
|
WalkState->AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->ParserState.Aml,
|
|
WalkState->ParserState.AmlStart);
|
|
|
|
Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState),
|
|
GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
if (Arg)
|
|
{
|
|
Arg->Common.AmlOffset = WalkState->AmlOffset;
|
|
AcpiPsAppendArg (Op, Arg);
|
|
}
|
|
|
|
INCREMENT_ARG_LIST (WalkState->ArgTypes);
|
|
}
|
|
|
|
|
|
/* Special processing for certain opcodes */
|
|
|
|
/* TBD (remove): Temporary mechanism to disable this code if needed */
|
|
|
|
#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
|
|
|
|
if ((WalkState->PassNumber <= ACPI_IMODE_LOAD_PASS1) &&
|
|
((WalkState->ParseFlags & ACPI_PARSE_DISASSEMBLE) == 0))
|
|
{
|
|
/*
|
|
* We want to skip If/Else/While constructs during Pass1 because we
|
|
* want to actually conditionally execute the code during Pass2.
|
|
*
|
|
* Except for disassembly, where we always want to walk the
|
|
* If/Else/While packages
|
|
*/
|
|
switch (Op->Common.AmlOpcode)
|
|
{
|
|
case AML_IF_OP:
|
|
case AML_ELSE_OP:
|
|
case AML_WHILE_OP:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
|
|
"Pass1: Skipping an If/Else/While body\n"));
|
|
|
|
/* Skip body of if/else/while in pass 1 */
|
|
|
|
WalkState->ParserState.Aml = WalkState->ParserState.PkgEnd;
|
|
WalkState->ArgCount = 0;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
switch (Op->Common.AmlOpcode)
|
|
{
|
|
case AML_METHOD_OP:
|
|
/*
|
|
* Skip parsing of control method because we don't have enough
|
|
* info in the first pass to parse it correctly.
|
|
*
|
|
* Save the length and address of the body
|
|
*/
|
|
Op->Named.Data = WalkState->ParserState.Aml;
|
|
Op->Named.Length = (UINT32)
|
|
(WalkState->ParserState.PkgEnd - WalkState->ParserState.Aml);
|
|
|
|
/* Skip body of method */
|
|
|
|
WalkState->ParserState.Aml = WalkState->ParserState.PkgEnd;
|
|
WalkState->ArgCount = 0;
|
|
break;
|
|
|
|
case AML_BUFFER_OP:
|
|
case AML_PACKAGE_OP:
|
|
case AML_VAR_PACKAGE_OP:
|
|
|
|
if ((Op->Common.Parent) &&
|
|
(Op->Common.Parent->Common.AmlOpcode == AML_NAME_OP) &&
|
|
(WalkState->PassNumber <= ACPI_IMODE_LOAD_PASS2))
|
|
{
|
|
/*
|
|
* Skip parsing of Buffers and Packages because we don't have
|
|
* enough info in the first pass to parse them correctly.
|
|
*/
|
|
Op->Named.Data = AmlOpStart;
|
|
Op->Named.Length = (UINT32)
|
|
(WalkState->ParserState.PkgEnd - AmlOpStart);
|
|
|
|
/* Skip body */
|
|
|
|
WalkState->ParserState.Aml = WalkState->ParserState.PkgEnd;
|
|
WalkState->ArgCount = 0;
|
|
}
|
|
break;
|
|
|
|
case AML_WHILE_OP:
|
|
|
|
if (WalkState->ControlState)
|
|
{
|
|
WalkState->ControlState->Control.PackageEnd =
|
|
WalkState->ParserState.PkgEnd;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
/* No action for all other opcodes */
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiPsCompleteOp
|
|
*
|
|
* PARAMETERS: WalkState - Current state
|
|
* Op - Returned Op
|
|
* Status - Parse status before complete Op
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Complete Op
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiPsCompleteOp (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT **Op,
|
|
ACPI_STATUS Status)
|
|
{
|
|
ACPI_STATUS Status2;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (PsCompleteOp, WalkState);
|
|
|
|
|
|
/*
|
|
* Finished one argument of the containing scope
|
|
*/
|
|
WalkState->ParserState.Scope->ParseScope.ArgCount--;
|
|
|
|
/* Close this Op (will result in parse subtree deletion) */
|
|
|
|
Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
|
|
if (ACPI_FAILURE (Status2))
|
|
{
|
|
return_ACPI_STATUS (Status2);
|
|
}
|
|
|
|
*Op = NULL;
|
|
|
|
switch (Status)
|
|
{
|
|
case AE_OK:
|
|
break;
|
|
|
|
|
|
case AE_CTRL_TRANSFER:
|
|
|
|
/* We are about to transfer to a called method */
|
|
|
|
WalkState->PrevOp = NULL;
|
|
WalkState->PrevArgTypes = WalkState->ArgTypes;
|
|
return_ACPI_STATUS (Status);
|
|
|
|
|
|
case AE_CTRL_END:
|
|
|
|
AcpiPsPopScope (&(WalkState->ParserState), Op,
|
|
&WalkState->ArgTypes, &WalkState->ArgCount);
|
|
|
|
if (*Op)
|
|
{
|
|
WalkState->Op = *Op;
|
|
WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode);
|
|
WalkState->Opcode = (*Op)->Common.AmlOpcode;
|
|
|
|
Status = WalkState->AscendingCallback (WalkState);
|
|
Status = AcpiPsNextParseState (WalkState, *Op, Status);
|
|
|
|
Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
|
|
if (ACPI_FAILURE (Status2))
|
|
{
|
|
return_ACPI_STATUS (Status2);
|
|
}
|
|
}
|
|
|
|
Status = AE_OK;
|
|
break;
|
|
|
|
|
|
case AE_CTRL_BREAK:
|
|
case AE_CTRL_CONTINUE:
|
|
|
|
/* Pop off scopes until we find the While */
|
|
|
|
while (!(*Op) || ((*Op)->Common.AmlOpcode != AML_WHILE_OP))
|
|
{
|
|
AcpiPsPopScope (&(WalkState->ParserState), Op,
|
|
&WalkState->ArgTypes, &WalkState->ArgCount);
|
|
}
|
|
|
|
/* Close this iteration of the While loop */
|
|
|
|
WalkState->Op = *Op;
|
|
WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode);
|
|
WalkState->Opcode = (*Op)->Common.AmlOpcode;
|
|
|
|
Status = WalkState->AscendingCallback (WalkState);
|
|
Status = AcpiPsNextParseState (WalkState, *Op, Status);
|
|
|
|
Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
|
|
if (ACPI_FAILURE (Status2))
|
|
{
|
|
return_ACPI_STATUS (Status2);
|
|
}
|
|
|
|
Status = AE_OK;
|
|
break;
|
|
|
|
|
|
case AE_CTRL_TERMINATE:
|
|
|
|
/* Clean up */
|
|
do
|
|
{
|
|
if (*Op)
|
|
{
|
|
Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
|
|
if (ACPI_FAILURE (Status2))
|
|
{
|
|
return_ACPI_STATUS (Status2);
|
|
}
|
|
|
|
AcpiUtDeleteGenericState (
|
|
AcpiUtPopGenericState (&WalkState->ControlState));
|
|
}
|
|
|
|
AcpiPsPopScope (&(WalkState->ParserState), Op,
|
|
&WalkState->ArgTypes, &WalkState->ArgCount);
|
|
|
|
} while (*Op);
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
|
|
|
|
default: /* All other non-AE_OK status */
|
|
|
|
do
|
|
{
|
|
if (*Op)
|
|
{
|
|
Status2 = AcpiPsCompleteThisOp (WalkState, *Op);
|
|
if (ACPI_FAILURE (Status2))
|
|
{
|
|
return_ACPI_STATUS (Status2);
|
|
}
|
|
}
|
|
|
|
AcpiPsPopScope (&(WalkState->ParserState), Op,
|
|
&WalkState->ArgTypes, &WalkState->ArgCount);
|
|
|
|
} while (*Op);
|
|
|
|
|
|
#if 0
|
|
/*
|
|
* TBD: Cleanup parse ops on error
|
|
*/
|
|
if (*Op == NULL)
|
|
{
|
|
AcpiPsPopScope (ParserState, Op,
|
|
&WalkState->ArgTypes, &WalkState->ArgCount);
|
|
}
|
|
#endif
|
|
WalkState->PrevOp = NULL;
|
|
WalkState->PrevArgTypes = WalkState->ArgTypes;
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* This scope complete? */
|
|
|
|
if (AcpiPsHasCompletedScope (&(WalkState->ParserState)))
|
|
{
|
|
AcpiPsPopScope (&(WalkState->ParserState), Op,
|
|
&WalkState->ArgTypes, &WalkState->ArgCount);
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *Op));
|
|
}
|
|
else
|
|
{
|
|
*Op = NULL;
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiPsCompleteFinalOp
|
|
*
|
|
* PARAMETERS: WalkState - Current state
|
|
* Op - Current Op
|
|
* Status - Current parse status before complete last
|
|
* Op
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Complete last Op.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static ACPI_STATUS
|
|
AcpiPsCompleteFinalOp (
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_PARSE_OBJECT *Op,
|
|
ACPI_STATUS Status)
|
|
{
|
|
ACPI_STATUS Status2;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (PsCompleteFinalOp, WalkState);
|
|
|
|
|
|
/*
|
|
* Complete the last Op (if not completed), and clear the scope stack.
|
|
* It is easily possible to end an AML "package" with an unbounded number
|
|
* of open scopes (such as when several ASL blocks are closed with
|
|
* sequential closing braces). We want to terminate each one cleanly.
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", Op));
|
|
do
|
|
{
|
|
if (Op)
|
|
{
|
|
if (WalkState->AscendingCallback != NULL)
|
|
{
|
|
WalkState->Op = Op;
|
|
WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
|
|
WalkState->Opcode = Op->Common.AmlOpcode;
|
|
|
|
Status = WalkState->AscendingCallback (WalkState);
|
|
Status = AcpiPsNextParseState (WalkState, Op, Status);
|
|
if (Status == AE_CTRL_PENDING)
|
|
{
|
|
Status = AcpiPsCompleteOp (WalkState, &Op, AE_OK);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
if (Status == AE_CTRL_TERMINATE)
|
|
{
|
|
Status = AE_OK;
|
|
|
|
/* Clean up */
|
|
do
|
|
{
|
|
if (Op)
|
|
{
|
|
Status2 = AcpiPsCompleteThisOp (WalkState, Op);
|
|
if (ACPI_FAILURE (Status2))
|
|
{
|
|
return_ACPI_STATUS (Status2);
|
|
}
|
|
}
|
|
|
|
AcpiPsPopScope (&(WalkState->ParserState), &Op,
|
|
&WalkState->ArgTypes, &WalkState->ArgCount);
|
|
|
|
} while (Op);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
else if (ACPI_FAILURE (Status))
|
|
{
|
|
/* First error is most important */
|
|
|
|
(void) AcpiPsCompleteThisOp (WalkState, Op);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
|
|
Status2 = AcpiPsCompleteThisOp (WalkState, Op);
|
|
if (ACPI_FAILURE (Status2))
|
|
{
|
|
return_ACPI_STATUS (Status2);
|
|
}
|
|
}
|
|
|
|
AcpiPsPopScope (&(WalkState->ParserState), &Op, &WalkState->ArgTypes,
|
|
&WalkState->ArgCount);
|
|
|
|
} while (Op);
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiPsParseLoop
|
|
*
|
|
* PARAMETERS: WalkState - Current state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Parse AML (pointed to by the current parser state) and return
|
|
* a tree of ops.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiPsParseLoop (
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_PARSE_OBJECT *Op = NULL; /* current op */
|
|
ACPI_PARSE_STATE *ParserState;
|
|
UINT8 *AmlOpStart = NULL;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (PsParseLoop, WalkState);
|
|
|
|
|
|
if (WalkState->DescendingCallback == NULL)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
ParserState = &WalkState->ParserState;
|
|
WalkState->ArgTypes = 0;
|
|
|
|
#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
|
|
|
|
if (WalkState->WalkType & ACPI_WALK_METHOD_RESTART)
|
|
{
|
|
/* We are restarting a preempted control method */
|
|
|
|
if (AcpiPsHasCompletedScope (ParserState))
|
|
{
|
|
/*
|
|
* We must check if a predicate to an IF or WHILE statement
|
|
* was just completed
|
|
*/
|
|
if ((ParserState->Scope->ParseScope.Op) &&
|
|
((ParserState->Scope->ParseScope.Op->Common.AmlOpcode == AML_IF_OP) ||
|
|
(ParserState->Scope->ParseScope.Op->Common.AmlOpcode == AML_WHILE_OP)) &&
|
|
(WalkState->ControlState) &&
|
|
(WalkState->ControlState->Common.State ==
|
|
ACPI_CONTROL_PREDICATE_EXECUTING))
|
|
{
|
|
/*
|
|
* A predicate was just completed, get the value of the
|
|
* predicate and branch based on that value
|
|
*/
|
|
WalkState->Op = NULL;
|
|
Status = AcpiDsGetPredicateValue (WalkState, ACPI_TO_POINTER (TRUE));
|
|
if (ACPI_FAILURE (Status) &&
|
|
((Status & AE_CODE_MASK) != AE_CODE_CONTROL))
|
|
{
|
|
if (Status == AE_AML_NO_RETURN_VALUE)
|
|
{
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Invoked method did not return a value"));
|
|
|
|
}
|
|
|
|
ACPI_EXCEPTION ((AE_INFO, Status, "GetPredicate Failed"));
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Status = AcpiPsNextParseState (WalkState, Op, Status);
|
|
}
|
|
|
|
AcpiPsPopScope (ParserState, &Op,
|
|
&WalkState->ArgTypes, &WalkState->ArgCount);
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", Op));
|
|
}
|
|
else if (WalkState->PrevOp)
|
|
{
|
|
/* We were in the middle of an op */
|
|
|
|
Op = WalkState->PrevOp;
|
|
WalkState->ArgTypes = WalkState->PrevArgTypes;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Iterative parsing loop, while there is more AML to process: */
|
|
|
|
while ((ParserState->Aml < ParserState->AmlEnd) || (Op))
|
|
{
|
|
AmlOpStart = ParserState->Aml;
|
|
if (!Op)
|
|
{
|
|
Status = AcpiPsCreateOp (WalkState, AmlOpStart, &Op);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
if (Status == AE_CTRL_PARSE_CONTINUE)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (Status == AE_CTRL_PARSE_PENDING)
|
|
{
|
|
Status = AE_OK;
|
|
}
|
|
|
|
Status = AcpiPsCompleteOp (WalkState, &Op, Status);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
Op->Common.AmlOffset = WalkState->AmlOffset;
|
|
|
|
if (WalkState->OpInfo)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
|
|
"Opcode %4.4X [%s] Op %p Aml %p AmlOffset %5.5X\n",
|
|
(UINT32) Op->Common.AmlOpcode, WalkState->OpInfo->Name,
|
|
Op, ParserState->Aml, Op->Common.AmlOffset));
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Start ArgCount at zero because we don't know if there are
|
|
* any args yet
|
|
*/
|
|
WalkState->ArgCount = 0;
|
|
|
|
/* Are there any arguments that must be processed? */
|
|
|
|
if (WalkState->ArgTypes)
|
|
{
|
|
/* Get arguments */
|
|
|
|
Status = AcpiPsGetArguments (WalkState, AmlOpStart, Op);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
Status = AcpiPsCompleteOp (WalkState, &Op, Status);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* Check for arguments that need to be processed */
|
|
|
|
if (WalkState->ArgCount)
|
|
{
|
|
/*
|
|
* There are arguments (complex ones), push Op and
|
|
* prepare for argument
|
|
*/
|
|
Status = AcpiPsPushScope (ParserState, Op,
|
|
WalkState->ArgTypes, WalkState->ArgCount);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
Status = AcpiPsCompleteOp (WalkState, &Op, Status);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
Op = NULL;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* All arguments have been processed -- Op is complete,
|
|
* prepare for next
|
|
*/
|
|
WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
|
|
if (WalkState->OpInfo->Flags & AML_NAMED)
|
|
{
|
|
if (AcpiGbl_Depth)
|
|
{
|
|
AcpiGbl_Depth--;
|
|
}
|
|
|
|
if (Op->Common.AmlOpcode == AML_REGION_OP ||
|
|
Op->Common.AmlOpcode == AML_DATA_REGION_OP)
|
|
{
|
|
/*
|
|
* Skip parsing of control method or opregion body,
|
|
* because we don't have enough info in the first pass
|
|
* to parse them correctly.
|
|
*
|
|
* Completed parsing an OpRegion declaration, we now
|
|
* know the length.
|
|
*/
|
|
Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data);
|
|
}
|
|
}
|
|
|
|
if (WalkState->OpInfo->Flags & AML_CREATE)
|
|
{
|
|
/*
|
|
* Backup to beginning of CreateXXXfield declaration (1 for
|
|
* Opcode)
|
|
*
|
|
* BodyLength is unknown until we parse the body
|
|
*/
|
|
Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data);
|
|
}
|
|
|
|
if (Op->Common.AmlOpcode == AML_BANK_FIELD_OP)
|
|
{
|
|
/*
|
|
* Backup to beginning of BankField declaration
|
|
*
|
|
* BodyLength is unknown until we parse the body
|
|
*/
|
|
Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data);
|
|
}
|
|
|
|
/* This op complete, notify the dispatcher */
|
|
|
|
if (WalkState->AscendingCallback != NULL)
|
|
{
|
|
WalkState->Op = Op;
|
|
WalkState->Opcode = Op->Common.AmlOpcode;
|
|
|
|
Status = WalkState->AscendingCallback (WalkState);
|
|
Status = AcpiPsNextParseState (WalkState, Op, Status);
|
|
if (Status == AE_CTRL_PENDING)
|
|
{
|
|
Status = AE_OK;
|
|
}
|
|
}
|
|
|
|
Status = AcpiPsCompleteOp (WalkState, &Op, Status);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
} /* while ParserState->Aml */
|
|
|
|
Status = AcpiPsCompleteFinalOp (WalkState, Op, Status);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|