components/disassembler/dmutils.c

/*******************************************************************************
 *
 * Module Name: dmutils - AML disassembler utilities
 *
 ******************************************************************************/

/******************************************************************************
 *
 * 1. Copyright Notice
 *
 * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp.
 * All rights reserved.
 *
 * 2. License
 *
 * 2.1. This is your license from Intel Corp. under its intellectual property
 * rights. You may have additional license terms from the party that provided
 * you this software, covering your right to use that party's intellectual
 * property rights.
 *
 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
 * copy of the source code appearing in this file ("Covered Code") an
 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
 * base code distributed originally by Intel ("Original Intel Code") to copy,
 * make derivatives, distribute, use and display any portion of the Covered
 * Code in any form, with the right to sublicense such rights; and
 *
 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
 * license (with the right to sublicense), under only those claims of Intel
 * patents that are infringed by the Original Intel Code, to make, use, sell,
 * offer to sell, and import the Covered Code and derivative works thereof
 * solely to the minimum extent necessary to exercise the above copyright
 * license, and in no event shall the patent license extend to any additions
 * to or modifications of the Original Intel Code. No other license or right
 * is granted directly or by implication, estoppel or otherwise;
 *
 * The above copyright and patent license is granted only if the following
 * conditions are met:
 *
 * 3. Conditions
 *
 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification with rights to further distribute source must include
 * the above Copyright Notice, the above License, this list of Conditions,
 * and the following Disclaimer and Export Compliance provision. In addition,
 * Licensee must cause all Covered Code to which Licensee contributes to
 * contain a file documenting the changes Licensee made to create that Covered
 * Code and the date of any change. Licensee must include in that file the
 * documentation of any changes made by any predecessor Licensee. Licensee
 * must include a prominent statement that the modification is derived,
 * directly or indirectly, from Original Intel Code.
 *
 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
 * Redistribution of source code of any substantial portion of the Covered
 * Code or modification without rights to further distribute source must
 * include the following Disclaimer and Export Compliance provision in the
 * documentation and/or other materials provided with distribution. In
 * addition, Licensee may not authorize further sublicense of source of any
 * portion of the Covered Code, and must include terms to the effect that the
 * license from Licensee to its licensee is limited to the intellectual
 * property embodied in the software Licensee provides to its licensee, and
 * not to intellectual property embodied in modifications its licensee may
 * make.
 *
 * 3.3. Redistribution of Executable. Redistribution in executable form of any
 * substantial portion of the Covered Code or modification must reproduce the
 * above Copyright Notice, and the following Disclaimer and Export Compliance
 * provision in the documentation and/or other materials provided with the
 * distribution.
 *
 * 3.4. Intel retains all right, title, and interest in and to the Original
 * Intel Code.
 *
 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
 * Intel shall be used in advertising or otherwise to promote the sale, use or
 * other dealings in products derived from or relating to the Covered Code
 * without prior written authorization from Intel.
 *
 * 4. Disclaimer and Export Compliance
 *
 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
 * PARTICULAR PURPOSE.
 *
 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
 * LIMITED REMEDY.
 *
 * 4.3. Licensee shall not export, either directly or indirectly, any of this
 * software or system incorporating such software without first obtaining any
 * required license or other approval from the U. S. Department of Commerce or
 * any other agency or department of the United States Government. In the
 * event Licensee exports any such software from the United States or
 * re-exports any such software from a foreign destination, Licensee shall
 * ensure that the distribution and export/re-export of the software is in
 * compliance with all laws, regulations, orders, or other restrictions of the
 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
 * any of its subsidiaries will export/re-export any technical data, process,
 * software, or service, directly or indirectly, to any country for which the
 * United States government or any agency thereof requires an export license,
 * other governmental approval, or letter of assurance, without first obtaining
 * such license, approval or letter.
 *
 *****************************************************************************
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * following license:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Alternatively, you may choose to be licensed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 *****************************************************************************/

#include "acpi.h"
#include "accommon.h"
#include "amlcode.h"
#include "acdisasm.h"
#include "acconvert.h"

#ifdef ACPI_ASL_COMPILER
#include <acnamesp.h>
#endif

#ifdef ACPI_DISASSEMBLER

#define _COMPONENT          ACPI_CA_DEBUGGER
        ACPI_MODULE_NAME    ("dmutils")


/* Data used in keeping track of fields */
#if 0
const char                      *AcpiGbl_FENames[] =
{
    "skip",
    "?access?"
};              /* FE = Field Element */
#endif

/* Operators for Match() */

const char                      *AcpiGbl_MatchOps[] =
{
    "MTR",
    "MEQ",
    "MLE",
    "MLT",
    "MGE",
    "MGT"
};

/* Access type decoding */

const char                      *AcpiGbl_AccessTypes[] =
{
    "AnyAcc",
    "ByteAcc",
    "WordAcc",
    "DWordAcc",
    "QWordAcc",
    "BufferAcc",
    "InvalidAccType",
    "InvalidAccType"
};

/* Lock rule decoding */

const char                      *AcpiGbl_LockRule[] =
{
    "NoLock",
    "Lock"
};

/* Update rule decoding */

const char                      *AcpiGbl_UpdateRules[] =
{
    "Preserve",
    "WriteAsOnes",
    "WriteAsZeros",
    "InvalidUpdateRule"
};

/* Strings used to decode resource descriptors */

const char                      *AcpiGbl_WordDecode[] =
{
    "Memory",
    "IO",
    "BusNumber",
    "UnknownResourceType"
};

const char                      *AcpiGbl_IrqDecode[] =
{
    "IRQNoFlags",
    "IRQ"
};


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmDecodeAttribute
 *
 * PARAMETERS:  Attribute       - Attribute field of AccessAs keyword
 *
 * RETURN:      None
 *
 * DESCRIPTION: Decode the AccessAs attribute byte. (Mostly SMBus and
 *              GenericSerialBus stuff.)
 *
 ******************************************************************************/

void
AcpiDmDecodeAttribute (
    UINT8                   Attribute)
{

    switch (Attribute)
    {
    case AML_FIELD_ATTRIB_QUICK:

        AcpiOsPrintf ("AttribQuick");
        break;

    case AML_FIELD_ATTRIB_SEND_RECEIVE:

        AcpiOsPrintf ("AttribSendReceive");
        break;

    case AML_FIELD_ATTRIB_BYTE:

        AcpiOsPrintf ("AttribByte");
        break;

    case AML_FIELD_ATTRIB_WORD:

        AcpiOsPrintf ("AttribWord");
        break;

    case AML_FIELD_ATTRIB_BLOCK:

        AcpiOsPrintf ("AttribBlock");
        break;

    case AML_FIELD_ATTRIB_BYTES:

        AcpiOsPrintf ("AttribBytes");
        break;

    case AML_FIELD_ATTRIB_PROCESS_CALL:

        AcpiOsPrintf ("AttribProcessCall");
        break;

    case AML_FIELD_ATTRIB_BLOCK_PROCESS_CALL:

        AcpiOsPrintf ("AttribBlockProcessCall");
        break;

    case AML_FIELD_ATTRIB_RAW_BYTES:

        AcpiOsPrintf ("AttribRawBytes");
        break;

    case AML_FIELD_ATTRIB_RAW_PROCESS_BYTES:

        AcpiOsPrintf ("AttribRawProcessBytes");
        break;

    default:

        /* A ByteConst is allowed by the grammar */

        AcpiOsPrintf ("0x%2.2X", Attribute);
        break;
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmIndent
 *
 * PARAMETERS:  Level               - Current source code indentation level
 *
 * RETURN:      None
 *
 * DESCRIPTION: Indent 4 spaces per indentation level.
 *
 ******************************************************************************/

void
AcpiDmIndent (
    UINT32                  Level)
{

    if (!Level)
    {
        return;
    }

    AcpiOsPrintf ("%*.s", (Level * 4), " ");
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmCommaIfListMember
 *
 * PARAMETERS:  Op              - Current operator/operand
 *
 * RETURN:      TRUE if a comma was inserted
 *
 * DESCRIPTION: Insert a comma if this Op is a member of an argument list.
 *
 ******************************************************************************/

BOOLEAN
AcpiDmCommaIfListMember (
    ACPI_PARSE_OBJECT       *Op)
{

    if (!Op->Common.Next)
    {
        ASL_CV_PRINT_ONE_COMMENT (Op, AMLCOMMENT_INLINE, NULL, 0);
        return (FALSE);
    }

    if (AcpiDmListType (Op->Common.Parent) & BLOCK_COMMA_LIST)
    {
        /* Exit if Target has been marked IGNORE */

        if (Op->Common.Next->Common.DisasmFlags & ACPI_PARSEOP_IGNORE)
        {
            ASL_CV_PRINT_ONE_COMMENT (Op, AMLCOMMENT_INLINE, NULL, 0);
            return (FALSE);
        }

        /* Check for a NULL target operand */

        if ((Op->Common.Next->Common.AmlOpcode == AML_INT_NAMEPATH_OP) &&
            (!Op->Common.Next->Common.Value.String))
        {
            /*
             * To handle the Divide() case where there are two optional
             * targets, look ahead one more op. If null, this null target
             * is the one and only target -- no comma needed. Otherwise,
             * we need a comma to prepare for the next target.
             */
            if (!Op->Common.Next->Common.Next)
            {
                ASL_CV_PRINT_ONE_COMMENT (Op, AMLCOMMENT_INLINE, NULL, 0);
                return (FALSE);
            }
        }

        if ((Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST) &&
            (!(Op->Common.Next->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST)))
        {
            ASL_CV_PRINT_ONE_COMMENT (Op, AMLCOMMENT_INLINE, NULL, 0);
            return (FALSE);
        }

        /* Emit comma only if this is not a C-style operator */

        if (!Op->Common.OperatorSymbol)
        {
            AcpiOsPrintf (", ");
            ASL_CV_PRINT_ONE_COMMENT (Op, AMLCOMMENT_INLINE, NULL, 0);
        }

        return (TRUE);
    }

    else if ((Op->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST) &&
             (Op->Common.Next->Common.DisasmFlags & ACPI_PARSEOP_PARAMETER_LIST))
    {
        AcpiOsPrintf (", ");
        ASL_CV_PRINT_ONE_COMMENT (Op, AMLCOMMENT_INLINE, NULL, 0);

        return (TRUE);
    }

    return (FALSE);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiDmCommaIfFieldMember
 *
 * PARAMETERS:  Op              - Current operator/operand
 *
 * RETURN:      None
 *
 * DESCRIPTION: Insert a comma if this Op is a member of a Field argument list.
 *
 ******************************************************************************/

void
AcpiDmCommaIfFieldMember (
    ACPI_PARSE_OBJECT       *Op)
{

    if (Op->Common.Next)
    {
        AcpiOsPrintf (", ");
    }
}

#endif