FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/compiler/aslopcodes.c

     /******************************************************************************
      *
      * Module Name: aslopcode - AML opcode generation
      *
      *****************************************************************************/
     
     /******************************************************************************
      *
      * 1. Copyright Notice
     *
     * Some or all of this work - Copyright (c) 1999 - 2022, 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 <contrib/dev/acpica/compiler/aslcompiler.h>
   #include "aslcompiler.y.h"
   #include <contrib/dev/acpica/include/amlcode.h>
   
   #define _COMPONENT          ACPI_COMPILER
           ACPI_MODULE_NAME    ("aslopcodes")
   
   
   /* Local prototypes */
   
   static void
   OpcDoAccessAs (
       ACPI_PARSE_OBJECT       *Op);
   
   static void
   OpcDoConnection (
       ACPI_PARSE_OBJECT       *Op);
   
   static void
   OpcDoUnicode (
       ACPI_PARSE_OBJECT       *Op);
   
   static void
   OpcDoEisaId (
       ACPI_PARSE_OBJECT       *Op);
   
   static void
   OpcDoUuId (
       ACPI_PARSE_OBJECT       *Op);
   
   
   /*******************************************************************************
    *
    * FUNCTION:    OpcAmlOpcodeUpdateWalk
    *
    * PARAMETERS:  ASL_WALK_CALLBACK
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Opcode update walk, ascending callback
    *
    ******************************************************************************/
   
   ACPI_STATUS
   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);
       }
   
       return (AE_OK);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    OpcAmlOpcodeWalk
    *
    * PARAMETERS:  ASL_WALK_CALLBACK
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Parse tree walk to generate both the AML opcodes and the AML
    *              operands.
    *
    ******************************************************************************/
   
   ACPI_STATUS
   OpcAmlOpcodeWalk (
       ACPI_PARSE_OBJECT       *Op,
       UINT32                  Level,
       void                    *Context)
   {
   
       AslGbl_TotalParseNodes++;
   
       OpcGenerateAmlOpcode (Op);
       OpnGenerateAmlOperands (Op);
       return (AE_OK);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    OpcGetIntegerWidth
    *
    * PARAMETERS:  Op          - DEFINITION BLOCK op
    *
    * RETURN:      none
    *
    * DESCRIPTION: Extract integer width from the table revision
    *
    ******************************************************************************/
   
   void
   OpcGetIntegerWidth (
       ACPI_PARSE_OBJECT       *Op)
   {
       ACPI_PARSE_OBJECT       *Child;
   
   
       if (!Op)
       {
           return;
       }
   
       if (AslGbl_RevisionOverride)
       {
           AcpiUtSetIntegerWidth (AslGbl_RevisionOverride);
       }
       else
       {
           Child = Op->Asl.Child;
           Child = Child->Asl.Next;
           Child = Child->Asl.Next;
   
           /* Use the revision to set the integer width */
   
           AcpiUtSetIntegerWidth ((UINT8) Child->Asl.Value.Integer);
       }
   }
   
   
   /*******************************************************************************
    *
    * 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.
    *
    ******************************************************************************/
   
   UINT32
   OpcSetOptimalIntegerSize (
       ACPI_PARSE_OBJECT       *Op)
   {
   
   #if 0
       /*
        * 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_DEFINITION_BLOCK))
       {
           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 (AslGbl_IntegerOptimizationFlag)
       {
           switch (Op->Asl.Value.Integer)
           {
           case 0:
   
               Op->Asl.AmlOpcode = AML_ZERO_OP;
               AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
                   Op, "Zero");
               return (1);
   
           case 1:
   
               Op->Asl.AmlOpcode = AML_ONE_OP;
               AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
                   Op, "One");
               return (1);
   
           case ACPI_UINT32_MAX:
   
               /* Check for table integer width (32 or 64) */
   
               if (AcpiGbl_IntegerByteWidth == 4)
               {
                   Op->Asl.AmlOpcode = AML_ONES_OP;
                   AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
                       Op, "Ones");
                   return (1);
               }
               break;
   
           case ACPI_UINT64_MAX:
   
               /* Check for table integer width (32 or 64) */
   
               if (AcpiGbl_IntegerByteWidth == 8)
               {
                   Op->Asl.AmlOpcode = AML_ONES_OP;
                   AslError (ASL_OPTIMIZATION, ASL_MSG_INTEGER_OPTIMIZATION,
                       Op, "Ones");
                   return (1);
               }
               break;
   
           default:
   
               break;
           }
       }
   
       /* Find the best fit using the various AML integer prefixes */
   
       if (Op->Asl.Value.Integer <= ACPI_UINT8_MAX)
       {
           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 /* 64-bit integer */
       {
           if (AcpiGbl_IntegerByteWidth == 4)
           {
               AslError (ASL_WARNING, ASL_MSG_INTEGER_LENGTH,
                   Op, NULL);
   
               if (!AslGbl_IgnoreErrors)
               {
                   /* Truncate the integer to 32-bit */
   
                   Op->Asl.Value.Integer &= ACPI_UINT32_MAX;
   
                   /* Now set the optimal integer size */
   
                   return (OpcSetOptimalIntegerSize (Op));
               }
           }
   
           Op->Asl.AmlOpcode = AML_QWORD_OP;
           return (8);
       }
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    OpcDoAccessAs
    *
    * PARAMETERS:  Op        - Parse node
    *
    * RETURN:      None
    *
    * DESCRIPTION: Implement the ACCESS_AS ASL keyword.
    *
    ******************************************************************************/
   
   static void
   OpcDoAccessAs (
       ACPI_PARSE_OBJECT       *Op)
   {
       ACPI_PARSE_OBJECT       *TypeOp;
       ACPI_PARSE_OBJECT       *AttribOp;
       ACPI_PARSE_OBJECT       *LengthOp;
       UINT8                   Attribute;
   
   
       Op->Asl.AmlOpcodeLength = 1;
       TypeOp = Op->Asl.Child;
   
       /* First child is the access type */
   
       TypeOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
       TypeOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
   
       /* Second child is the optional access attribute */
   
       AttribOp = TypeOp->Asl.Next;
       if (AttribOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
       {
           AttribOp->Asl.Value.Integer = 0;
       }
   
       AttribOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
       AttribOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
   
       /* Only a few AccessAttributes support AccessLength */
   
       Attribute = (UINT8) AttribOp->Asl.Value.Integer;
       if ((Attribute != AML_FIELD_ATTRIB_BYTES) &&
           (Attribute != AML_FIELD_ATTRIB_RAW_BYTES) &&
           (Attribute != AML_FIELD_ATTRIB_RAW_PROCESS_BYTES))
       {
           return;
       }
   
       Op->Asl.AmlOpcode = AML_FIELD_EXT_ACCESS_OP;
   
       /*
        * Child of Attributes is the AccessLength (required for Multibyte,
        * RawBytes, RawProcess.)
        */
       LengthOp = AttribOp->Asl.Child;
       if (!LengthOp)
       {
           return;
       }
   
       /* TBD: probably can remove */
   
       if (LengthOp->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
       {
           LengthOp->Asl.Value.Integer = 16;
       }
   
       LengthOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE;
       LengthOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    OpcDoConnection
    *
    * PARAMETERS:  Op        - Parse node
    *
    * RETURN:      None
    *
    * DESCRIPTION: Implement the Connection ASL keyword.
    *
    ******************************************************************************/
   
   static void
   OpcDoConnection (
       ACPI_PARSE_OBJECT       *Op)
   {
       ASL_RESOURCE_NODE       *Rnode;
       ACPI_PARSE_OBJECT       *BufferOp;
       ACPI_PARSE_OBJECT       *BufferLengthOp;
       ACPI_PARSE_OBJECT       *BufferDataOp;
       ASL_RESOURCE_INFO       Info;
       UINT8                   State;
   
   
       Op->Asl.AmlOpcodeLength = 1;
   
       if (Op->Asl.Child->Asl.AmlOpcode == AML_INT_NAMEPATH_OP)
       {
           return;
       }
   
       BufferOp = Op->Asl.Child;
       BufferLengthOp = BufferOp->Asl.Child;
       BufferDataOp = BufferLengthOp->Asl.Next;
   
       Info.DescriptorTypeOp = BufferDataOp->Asl.Next;
       Info.CurrentByteOffset = 0;
       State = ACPI_RSTATE_NORMAL;
       Rnode = RsDoOneResourceDescriptor (&Info, &State);
       if (!Rnode)
       {
           return; /* error */
       }
   
       /*
        * Transform the nodes into the following
        *
        * Op           -> AML_BUFFER_OP
        * First Child  -> BufferLength
        * Second Child -> Descriptor Buffer (raw byte data)
        */
       BufferOp->Asl.ParseOpcode = PARSEOP_BUFFER;
       BufferOp->Asl.AmlOpcode = AML_BUFFER_OP;
       BufferOp->Asl.CompileFlags = OP_AML_PACKAGE | OP_IS_RESOURCE_DESC;
       UtSetParseOpName (BufferOp);
   
       BufferLengthOp->Asl.ParseOpcode = PARSEOP_INTEGER;
       BufferLengthOp->Asl.Value.Integer = Rnode->BufferLength;
       (void) OpcSetOptimalIntegerSize (BufferLengthOp);
       UtSetParseOpName (BufferLengthOp);
   
       BufferDataOp->Asl.ParseOpcode = PARSEOP_RAW_DATA;
       BufferDataOp->Asl.AmlOpcode = AML_RAW_DATA_CHAIN;
       BufferDataOp->Asl.AmlOpcodeLength = 0;
       BufferDataOp->Asl.AmlLength = Rnode->BufferLength;
       BufferDataOp->Asl.Value.Buffer = (UINT8 *) Rnode;
       UtSetParseOpName (BufferDataOp);
   }
   
   
   /*******************************************************************************
    *
    * 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.
    *
    ******************************************************************************/
   
   static void
   OpcDoUnicode (
       ACPI_PARSE_OBJECT       *Op)
   {
       ACPI_PARSE_OBJECT       *InitializerOp;
       UINT32                  Length;
       UINT32                  Count;
       UINT32                  i;
       UINT8                   *AsciiString;
       UINT16                  *UnicodeString;
       ACPI_PARSE_OBJECT       *BufferLengthOp;
   
   
       /* Change op into a buffer object */
   
       Op->Asl.CompileFlags &= ~OP_COMPILE_TIME_CONST;
       Op->Asl.ParseOpcode = PARSEOP_BUFFER;
       UtSetParseOpName (Op);
   
       /* Buffer Length is first, followed by the string */
   
       BufferLengthOp = Op->Asl.Child;
       InitializerOp = BufferLengthOp->Asl.Next;
   
       AsciiString = (UINT8 *) InitializerOp->Asl.Value.String;
   
       /* Create a new buffer for the Unicode string */
   
       Count = strlen (InitializerOp->Asl.Value.String) + 1;
       Length = Count * sizeof (UINT16);
       UnicodeString = UtLocalCalloc (Length);
   
       /* Convert to Unicode string (including null terminator) */
   
       for (i = 0; i < Count; i++)
       {
           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);
   
       (void) OpcSetOptimalIntegerSize (BufferLengthOp);
   
       /* The Unicode string is a raw data buffer */
   
       InitializerOp->Asl.Value.Buffer = (UINT8 *) UnicodeString;
       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 significant 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    - 3rd hex digit of product number
    *                      Bits 3-0    - Hex digit of the revision number
    *
    ******************************************************************************/
   
   static void
   OpcDoEisaId (
       ACPI_PARSE_OBJECT       *Op)
   {
       UINT32                  EisaId = 0;
       UINT32                  BigEndianId;
       char                    *InString;
       ACPI_STATUS             Status = AE_OK;
       UINT32                  i;
   
   
       InString = (char *) Op->Asl.Value.String;
   
       /*
        * The EISAID string must be exactly 7 characters and of the form
        * "UUUXXXX" -- 3 uppercase letters and 4 hex digits (e.g., "PNP0001")
        */
       if (strlen (InString) != 7)
       {
           Status = AE_BAD_PARAMETER;
       }
       else
       {
           /* Check all 7 characters for correct format */
   
           for (i = 0; i < 7; i++)
           {
               /* First 3 characters must be uppercase letters */
   
               if (i < 3)
               {
                   if (!isupper ((int) InString[i]))
                   {
                       Status = AE_BAD_PARAMETER;
                   }
               }
   
               /* Last 4 characters must be hex digits */
   
               else if (!isxdigit ((int) InString[i]))
               {
                   Status = AE_BAD_PARAMETER;
               }
           }
       }
   
       if (ACPI_FAILURE (Status))
       {
           AslError (ASL_ERROR, ASL_MSG_INVALID_EISAID, Op, Op->Asl.Value.String);
       }
       else
       {
           /* Create ID big-endian first (bits are contiguous) */
   
           BigEndianId =
               (UINT32) ((UINT8) (InString[0] - 0x40)) << 26 |
               (UINT32) ((UINT8) (InString[1] - 0x40)) << 21 |
               (UINT32) ((UINT8) (InString[2] - 0x40)) << 16 |
   
               (AcpiUtAsciiCharToHex (InString[3])) << 12 |
               (AcpiUtAsciiCharToHex (InString[4])) << 8  |
               (AcpiUtAsciiCharToHex (InString[5])) << 4  |
                AcpiUtAsciiCharToHex (InString[6]);
   
           /* Swap to little-endian to get final ID (see function header) */
   
           EisaId = AcpiUtDwordByteSwap (BigEndianId);
       }
   
       /*
        * Morph the Op into an integer, regardless of whether there
        * was an error in the EISAID string
        */
       Op->Asl.Value.Integer = EisaId;
   
       Op->Asl.CompileFlags &= ~OP_COMPILE_TIME_CONST;
       Op->Asl.ParseOpcode = PARSEOP_INTEGER;
       (void) OpcSetOptimalIntegerSize (Op);
   
       /* Op is now an integer */
   
       UtSetParseOpName (Op);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    OpcDoUuId
    *
    * PARAMETERS:  Op                  - Parse node
    *
    * RETURN:      None
    *
    * DESCRIPTION: Convert UUID string to 16-byte buffer
    *
    ******************************************************************************/
   
   static void
   OpcDoUuId (
       ACPI_PARSE_OBJECT       *Op)
   {
       char                    *InString;
       UINT8                   *Buffer;
       ACPI_STATUS             Status = AE_OK;
       ACPI_PARSE_OBJECT       *NewOp;
   
   
       InString = ACPI_CAST_PTR (char, Op->Asl.Value.String);
       Buffer = UtLocalCalloc (16);
   
       Status = AuValidateUuid (InString);
       if (ACPI_FAILURE (Status))
       {
           AslError (ASL_ERROR, ASL_MSG_INVALID_UUID, Op, Op->Asl.Value.String);
       }
       else
       {
           /* Convert UUID string to a buffer, check for a known UUID */
   
           AcpiUtConvertStringToUuid (InString, Buffer);
           if (!AcpiAhMatchUuid (Buffer))
           {
               AslError (ASL_REMARK, ASL_MSG_UUID_NOT_FOUND, Op, NULL);
           }
       }
   
       /* Change Op to a Buffer */
   
       Op->Asl.ParseOpcode = PARSEOP_BUFFER;
       Op->Common.AmlOpcode = AML_BUFFER_OP;
   
       /* Disable further optimization */
   
       Op->Asl.CompileFlags &= ~OP_COMPILE_TIME_CONST;
       UtSetParseOpName (Op);
   
       /* Child node is the buffer length */
   
       NewOp = TrAllocateOp (PARSEOP_INTEGER);
   
       NewOp->Asl.AmlOpcode = AML_BYTE_OP;
       NewOp->Asl.Value.Integer = 16;
       NewOp->Asl.Parent = Op;
   
       Op->Asl.Child = NewOp;
       Op = NewOp;
   
       /* Peer to the child is the raw buffer data */
   
       NewOp = TrAllocateOp (PARSEOP_RAW_DATA);
       NewOp->Asl.AmlOpcode = AML_RAW_DATA_BUFFER;
       NewOp->Asl.AmlLength = 16;
       NewOp->Asl.Value.String = ACPI_CAST_PTR (char, Buffer);
       NewOp->Asl.Parent = Op->Asl.Parent;
   
       Op->Asl.Next = NewOp;
   }
   
   
   /*******************************************************************************
    *
    * 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.
    *
    ******************************************************************************/
   
   void
   OpcGenerateAmlOpcode (
       ACPI_PARSE_OBJECT       *Op)
   {
       UINT16                  Index;
   
   
       Index = (UINT16) (Op->Asl.ParseOpcode - ASL_PARSE_OPCODE_BASE);
   
       Op->Asl.AmlOpcode     = AslKeywordMapping[Index].AmlOpcode;
       Op->Asl.AcpiBtype     = AslKeywordMapping[Index].AcpiBtype;
       Op->Asl.CompileFlags |= AslKeywordMapping[Index].Flags;
   
       if (!Op->Asl.Value.Integer)
       {
           Op->Asl.Value.Integer = AslKeywordMapping[Index].Value;
       }
   
       /* Special handling for some opcodes */
   
       switch (Op->Asl.ParseOpcode)
       {
       case PARSEOP_INTEGER:
           /*
            * Set the opcode based on the size of the integer
            */
           (void) OpcSetOptimalIntegerSize (Op);
           break;
   
       case PARSEOP_OFFSET:
   
           Op->Asl.AmlOpcodeLength = 1;
           break;
   
       case PARSEOP_ACCESSAS:
   
           OpcDoAccessAs (Op);
           break;
   
       case PARSEOP_CONNECTION:
   
           OpcDoConnection (Op);
           break;
   
       case PARSEOP_EISAID:
   
           OpcDoEisaId (Op);
           break;
   
       case PARSEOP_PRINTF:
   
           OpcDoPrintf (Op);
           break;
   
       case PARSEOP_FPRINTF:
   
           OpcDoFprintf (Op);
           break;
   
       case PARSEOP_TOPLD:
   
           OpcDoPld (Op);
           break;
   
       case PARSEOP_TOUUID:
   
           OpcDoUuId (Op);
           break;
   
       case PARSEOP_UNICODE:
   
           OpcDoUnicode (Op);
           break;
   
       case PARSEOP_INCLUDE:
   
           AslGbl_HasIncludeFiles = TRUE;
           break;
   
       case PARSEOP_TIMER:
   
           if (AcpiGbl_IntegerBitWidth == 32)
           {
               AslError (ASL_REMARK, ASL_MSG_TRUNCATION, Op, NULL);
           }
           break;
   
       default:
   
           /* Nothing to do for other opcodes */
   
           break;
       }
   
       return;
   }

Cache object: f05d37d6dcb03194cec4d70fccb22f38