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 *

 * Module Name: aslopcode - AML opcode generation

 *

 *****************************************************************************/

 *

 * 1. Copyright Notice

 *

 * Some or all of this work - Copyright (c) 1999 - 2011, 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.

 *

 *****************************************************************************/

#include "aslcompiler.y.h"

#include "amlcode.h"

        ACPI_MODULE_NAME    ("aslopcodes")

OpcDoAccessAs (

    ACPI_PARSE_OBJECT       *Op);

OpcDoUnicode (

    ACPI_PARSE_OBJECT       *Op);

OpcDoEisaId (

    ACPI_PARSE_OBJECT       *Op);

OpcDoUuId (

    ACPI_PARSE_OBJECT       *Op);

 *

 * FUNCTION:    OpcAmlOpcodeUpdateWalk

 *

 * PARAMETERS:  ASL_WALK_CALLBACK

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Opcode update walk, ascending callback

 *

 ******************************************************************************/

OpcAmlOpcodeUpdateWalk (

    ACPI_PARSE_OBJECT       *Op,

    UINT32                  Level,

    void                    *Context)

{

     * Handle the Package() case where the actual opcode cannot be determined

     * until the PackageLength operand has been folded and minimized.

     * (PackageOp versus VarPackageOp)

     *

     * This is (as of ACPI 3.0) the only case where the AML opcode can change

     * based upon the value of a parameter.

     *

     * The parser always inserts a VarPackage opcode, which can possibly be

     * optimized to a Package opcode.

     */

    if (Op->Asl.ParseOpcode == PARSEOP_VAR_PACKAGE)

    {

        OpnDoPackage (Op);

    }

}

 *

 * FUNCTION:    OpcAmlOpcodeWalk

 *

 * PARAMETERS:  ASL_WALK_CALLBACK

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Parse tree walk to generate both the AML opcodes and the AML

 *              operands.

 *

 ******************************************************************************/

OpcAmlOpcodeWalk (

    ACPI_PARSE_OBJECT       *Op,

    UINT32                  Level,

    void                    *Context)

{

    OpnGenerateAmlOperands (Op);

    return (AE_OK);

}

 *

 * FUNCTION:    OpcGetIntegerWidth

 *

 * PARAMETERS:  Op          - DEFINITION BLOCK op

 *

 * RETURN:      none

 *

 * DESCRIPTION: Extract integer width from the table revision

 *

 ******************************************************************************/

OpcGetIntegerWidth (

    ACPI_PARSE_OBJECT       *Op)

{

    ACPI_PARSE_OBJECT       *Child;

    {

        return;

    }

    {

        AcpiUtSetIntegerWidth (Gbl_RevisionOverride);

    }

    else

    {

        Child = Op->Asl.Child;

        Child = Child->Asl.Next;

        Child = Child->Asl.Next;

    }

}

 *

 * FUNCTION:    OpcSetOptimalIntegerSize

 *

 * PARAMETERS:  Op        - A parse tree node

 *

 * RETURN:      Integer width, in bytes.  Also sets the node AML opcode to the

 *              optimal integer AML prefix opcode.

 *

 * DESCRIPTION: Determine the optimal AML encoding of an integer.  All leading

 *              zeros can be truncated to squeeze the integer into the

 *              minimal number of AML bytes.

 *

 ******************************************************************************/

OpcSetOptimalIntegerSize (

    ACPI_PARSE_OBJECT       *Op)

{

    /*

     * TBD: - we don't want to optimize integers in the block header, but the

     * code below does not work correctly.

     */

    if (Op->Asl.Parent &&

        Op->Asl.Parent->Asl.Parent &&

       (Op->Asl.Parent->Asl.Parent->Asl.ParseOpcode == PARSEOP_DEFINITIONBLOCK))

    {

        return 0;

    }

#endif

     * Check for the special AML integers first - Zero, One, Ones.

     * These are single-byte opcodes that are the smallest possible

     * representation of an integer.

     *

     * This optimization is optional.

     */

    if (Gbl_IntegerOptimizationFlag)

    {

        switch (Op->Asl.Value.Integer)

        {

        case 0:

            AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,

                Op, "Zero");

            return 1;

            AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,

                Op, "One");

            return 1;

            {

                Op->Asl.AmlOpcode = AML_ONES_OP;

                AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,

                    Op, "Ones");

                return 1;

            }

            break;

            {

                Op->Asl.AmlOpcode = AML_ONES_OP;

                AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,

                    Op, "Ones");

                return 1;

            }

            break;

            break;

        }

    }

    {

        Op->Asl.AmlOpcode = AML_BYTE_OP;

        return 1;

    }

    if (Op->Asl.Value.Integer <= ACPI_UINT16_MAX)

    {

        Op->Asl.AmlOpcode = AML_WORD_OP;

        return 2;

    }

    if (Op->Asl.Value.Integer <= ACPI_UINT32_MAX)

    {

        Op->Asl.AmlOpcode = AML_DWORD_OP;

        return 4;

    }

    else

    {

        if (AcpiGbl_IntegerByteWidth == 4)

        {

            AslError (ASL_WARNING, ASL_MSG_INTEGER_LENGTH,

                Op, NULL);

            {

                /* Truncate the integer to 32-bit */

                Op->Asl.AmlOpcode = AML_DWORD_OP;

                return 4;

            }

        }

        return 8;

    }

}

 *

 * FUNCTION:    OpcDoAccessAs

 *

 * PARAMETERS:  Op        - Parse node

 *

 * RETURN:      None

 *

 * DESCRIPTION: Implement the ACCESS_AS ASL keyword.

 *

 ******************************************************************************/

OpcDoAccessAs (

    ACPI_PARSE_OBJECT       *Op)

{

    ACPI_PARSE_OBJECT       *Next;

    Next = Op->Asl.Child;

    Next->Asl.ParseOpcode = PARSEOP_RAW_DATA;

    if (Next->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)

    {

        Next->Asl.Value.Integer = 0;

    }

    Next->Asl.AmlOpcode = AML_RAW_DATA_BYTE;

    Next->Asl.ParseOpcode = PARSEOP_RAW_DATA;

}

 *

 * FUNCTION:    OpcDoUnicode

 *

 * PARAMETERS:  Op        - Parse node

 *

 * RETURN:      None

 *

 * DESCRIPTION: Implement the UNICODE ASL "macro".  Convert the input string

 *              to a unicode buffer.  There is no Unicode AML opcode.

 *

 * Note:  The Unicode string is 16 bits per character, no leading signature,

 *        with a 16-bit terminating NULL.

 *

 ******************************************************************************/

OpcDoUnicode (

    ACPI_PARSE_OBJECT       *Op)

{

    ACPI_PARSE_OBJECT       *InitializerOp;

    UINT32                  Length;

    UINT32                  Count;

    UINT32                  i;

    UINT8                   *AsciiString;

    UINT16                  *UnicodeString;

    ACPI_PARSE_OBJECT       *BufferLengthOp;

    Op->Asl.ParseOpcode = PARSEOP_BUFFER;

    UtSetParseOpName (Op);

    InitializerOp = BufferLengthOp->Asl.Next;

    Length = Count * sizeof (UINT16);

    UnicodeString = UtLocalCalloc (Length);

    {

        UnicodeString[i] = (UINT16) AsciiString[i];

    }

     * Just set the buffer size node to be the buffer length, regardless

     * of whether it was previously an integer or a default_arg placeholder

     */

    BufferLengthOp->Asl.ParseOpcode   = PARSEOP_INTEGER;

    BufferLengthOp->Asl.AmlOpcode     = AML_DWORD_OP;

    BufferLengthOp->Asl.Value.Integer = Length;

    UtSetParseOpName (BufferLengthOp);

    InitializerOp->Asl.AmlOpcode      = AML_RAW_DATA_BUFFER;

    InitializerOp->Asl.AmlLength      = Length;

    InitializerOp->Asl.ParseOpcode    = PARSEOP_RAW_DATA;

    InitializerOp->Asl.Child          = NULL;

    UtSetParseOpName (InitializerOp);

}

 *

 * FUNCTION:    OpcDoEisaId

 *

 * PARAMETERS:  Op        - Parse node

 *

 * RETURN:      None

 *

 * DESCRIPTION: Convert a string EISA ID to numeric representation.  See the

 *              Pnp BIOS Specification for details.  Here is an excerpt:

 *

 *              A seven character ASCII representation of the product

 *              identifier compressed into a 32-bit identifier.  The seven

 *              character ID consists of a three character manufacturer code,

 *              a three character hexadecimal product identifier, and a one

 *              character hexadecimal revision number.  The manufacturer code

 *              is a 3 uppercase character code that is compressed into 3 5-bit

 *              values as follows:

 *                  1) Find hex ASCII value for each letter

 *                  2) Subtract 40h from each ASCII value

 *                  3) Retain 5 least signficant bits for each letter by

 *                     discarding upper 3 bits because they are always 0.

 *                  4) Compressed code = concatenate 0 and the 3 5-bit values

 *

 *              The format of the compressed product identifier is as follows:

 *              Byte 0: Bit 7       - Reserved (0)

 *                      Bits 6-2:   - 1st character of compressed mfg code

 *                      Bits 1-0    - Upper 2 bits of 2nd character of mfg code

 *              Byte 1: Bits 7-5    - Lower 3 bits of 2nd character of mfg code

 *                      Bits 4-0    - 3rd character of mfg code

 *              Byte 2: Bits 7-4    - 1st hex digit of product number

 *                      Bits 3-0    - 2nd hex digit of product number

 *              Byte 3: Bits 7-4    - 3st hex digit of product number

 *                      Bits 3-0    - Hex digit of the revision number

 *

 ******************************************************************************/

OpcDoEisaId (

    ACPI_PARSE_OBJECT       *Op)

{

    UINT32                  EisaId = 0;

    UINT32                  BigEndianId;

    char                    *InString;

    ACPI_STATUS             Status = AE_OK;

    UINT32                  i;

     * The EISAID string must be exactly 7 characters and of the form

     * "UUUXXXX" -- 3 uppercase letters and 4 hex digits (e.g., "PNP0001")

     */

    if (ACPI_STRLEN (InString) != 7)

    {

        Status = AE_BAD_PARAMETER;

    }

    else

    {

        /* Check all 7 characters for correct format */

        {

            /* First 3 characters must be uppercase letters */

            {

                if (!isupper ((int) InString[i]))

                {

                    Status = AE_BAD_PARAMETER;

                }

            }

            {

                Status = AE_BAD_PARAMETER;

            }

        }

    }

    {

        AslError (ASL_ERROR, ASL_MSG_INVALID_EISAID, Op, Op->Asl.Value.String);

    }

    else

    {

        /* Create ID big-endian first (bits are contiguous) */

            (UINT32) ((UINT8) (InString[0] - 0x40)) << 26 |

            (UINT32) ((UINT8) (InString[1] - 0x40)) << 21 |

            (UINT32) ((UINT8) (InString[2] - 0x40)) << 16 |

            (UtHexCharToValue (InString[4])) << 8  |

            (UtHexCharToValue (InString[5])) << 4  |

             UtHexCharToValue (InString[6]);

    }

     * Morph the Op into an integer, regardless of whether there

     * was an error in the EISAID string

     */

    Op->Asl.Value.Integer = EisaId;

    Op->Asl.ParseOpcode = PARSEOP_INTEGER;

    (void) OpcSetOptimalIntegerSize (Op);

}

 *

 * FUNCTION:    OpcDoUiId

 *

 * PARAMETERS:  Op        - Parse node

 *

 * RETURN:      None

 *

 * DESCRIPTION: Convert UUID string to 16-byte buffer

 *

 ******************************************************************************/

OpcDoUuId (

    ACPI_PARSE_OBJECT       *Op)

{

    char                    *InString;

    char                    *Buffer;

    ACPI_STATUS             Status = AE_OK;

    ACPI_PARSE_OBJECT       *NewOp;

    Buffer = UtLocalCalloc (16);

    if (ACPI_FAILURE (Status))

    {

        AslError (ASL_ERROR, ASL_MSG_INVALID_UUID, Op, Op->Asl.Value.String);

    }

    else

    {

        (void) AuConvertStringToUuid (InString, Buffer);

    }

    Op->Common.AmlOpcode = AML_BUFFER_OP;

    UtSetParseOpName (Op);

    NewOp->Asl.Value.Integer = 16;

    NewOp->Asl.Parent        = Op;

    Op = NewOp;

    NewOp->Asl.AmlOpcode     = AML_RAW_DATA_BUFFER;

    NewOp->Asl.AmlLength     = 16;

    NewOp->Asl.Value.String  = (char *) Buffer;

    NewOp->Asl.Parent        = Op->Asl.Parent;

}

 *

 * FUNCTION:    OpcGenerateAmlOpcode

 *

 * PARAMETERS:  Op        - Parse node

 *

 * RETURN:      None

 *

 * DESCRIPTION: Generate the AML opcode associated with the node and its

 *              parse (lex/flex) keyword opcode.  Essentially implements

 *              a mapping between the parse opcodes and the actual AML opcodes.

 *

 ******************************************************************************/

OpcGenerateAmlOpcode (

    ACPI_PARSE_OBJECT       *Op)

{

    Op->Asl.AcpiBtype     = AslKeywordMapping[Index].AcpiBtype;

    Op->Asl.CompileFlags |= AslKeywordMapping[Index].Flags;

    {

        Op->Asl.Value.Integer = AslKeywordMapping[Index].Value;

    }

    {

    case PARSEOP_INTEGER:

        /*

         * Set the opcode based on the size of the integer

         */

        (void) OpcSetOptimalIntegerSize (Op);

        break;

        break;

        break;

        break;

        break;

        break;

        Gbl_HasIncludeFiles = TRUE;

        break;

        Op->Asl.Child->Asl.Next->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;

        break;

        /* Nothing to do for other opcodes */

        break;

    }

}