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

     /******************************************************************************
      *
      * Module Name: aslparseop - Parse op create/allocate/cache interfaces
      *
      *****************************************************************************/
     
     /******************************************************************************
      *
      * 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/acapps.h>
   #include <contrib/dev/acpica/include/acconvert.h>
   
   #define _COMPONENT          ACPI_COMPILER
           ACPI_MODULE_NAME    ("aslparseop")
   
   
   /*******************************************************************************
    *
    * FUNCTION:    TrCreateOp
    *
    * PARAMETERS:  ParseOpcode         - Opcode to be assigned to the op
    *              NumChildren         - Number of children to follow
    *              ...                 - A list of child ops to link to the new
    *                                    op. NumChildren long.
    *
    * RETURN:      Pointer to the new op. Aborts on allocation failure
    *
    * DESCRIPTION: Create a new parse op and link together a list of child
    *              ops underneath the new op.
    *
    ******************************************************************************/
   
   ACPI_PARSE_OBJECT *
   TrCreateOp (
       UINT32                  ParseOpcode,
       UINT32                  NumChildren,
       ...)
   {
       ACPI_PARSE_OBJECT       *Op;
       ACPI_PARSE_OBJECT       *Child;
       ACPI_PARSE_OBJECT       *PrevChild;
       va_list                 ap;
       UINT32                  i;
       BOOLEAN                 FirstChild;
   
   
       va_start (ap, NumChildren);
   
       /* Allocate one new op */
   
       Op = TrAllocateOp (ParseOpcode);
   
       DbgPrint (ASL_PARSE_OUTPUT,
           "\nCreateOp  Ln/Col %u/%u NewParent %p Child %u Op %s  ",
           Op->Asl.LineNumber, Op->Asl.Column, Op,
           NumChildren, UtGetOpName(ParseOpcode));
   
       /* Some extra debug output based on the parse opcode */
   
       switch (ParseOpcode)
       {
       case PARSEOP_ASL_CODE:
   
           AslGbl_ParseTreeRoot = Op;
           Op->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG;
           DbgPrint (ASL_PARSE_OUTPUT, "ASLCODE (Tree Completed)->");
           break;
   
       case PARSEOP_DEFINITION_BLOCK:
   
           DbgPrint (ASL_PARSE_OUTPUT, "DEFINITION_BLOCK (Tree Completed)->");
           break;
   
       case PARSEOP_OPERATIONREGION:
   
           DbgPrint (ASL_PARSE_OUTPUT, "OPREGION->");
           break;
   
       case PARSEOP_OR:
   
           DbgPrint (ASL_PARSE_OUTPUT, "OR->");
           break;
   
       default:
   
           /* Nothing to do for other opcodes */
   
           break;
       }
   
       /* Link the new op to its children */
   
       PrevChild = NULL;
       FirstChild = TRUE;
       for (i = 0; i < NumChildren; i++)
       {
           /* Get the next child */
   
           Child = va_arg (ap, ACPI_PARSE_OBJECT *);
           DbgPrint (ASL_PARSE_OUTPUT, "%p, ", Child);
   
           /*
            * If child is NULL, this means that an optional argument
            * was omitted. We must create a placeholder with a special
            * opcode (DEFAULT_ARG) so that the code generator will know
            * that it must emit the correct default for this argument
            */
           if (!Child)
           {
               Child = TrAllocateOp (PARSEOP_DEFAULT_ARG);
           }
   
           /* Link first child to parent */
   
           if (FirstChild)
           {
               FirstChild = FALSE;
               Op->Asl.Child = Child;
   
               /*
                * For the ASL-/ASL+ converter: if the ParseOp is a Connection,
                * External, Offset or AccessAs, it means that the comments in the
                * FirstChild belongs to their parent due to the parsing order in
                * the .y files. To correct this, take the comments in the
                * FirstChild place it in the parent. This also means that
                * legitimate comments for the child gets put to the parent.
                */
               if (AcpiGbl_CaptureComments &&
                   ((ParseOpcode == PARSEOP_CONNECTION) ||
                    (ParseOpcode == PARSEOP_EXTERNAL) ||
                    (ParseOpcode == PARSEOP_OFFSET) ||
                    (ParseOpcode == PARSEOP_ACCESSAS)))
               {
                   Op->Asl.CommentList      = Child->Asl.CommentList;
                   Op->Asl.EndBlkComment    = Child->Asl.EndBlkComment;
                   Op->Asl.InlineComment    = Child->Asl.InlineComment;
                   Op->Asl.FileChanged      = Child->Asl.FileChanged;
   
                   Child->Asl.CommentList   = NULL;
                   Child->Asl.EndBlkComment = NULL;
                   Child->Asl.InlineComment = NULL;
                   Child->Asl.FileChanged   = FALSE;
   
                   /*
                    * These do not need to be "passed off". They can be copied
                    * because the code for these opcodes should be printed in the
                    * same file.
                    */
                   Op->Asl.Filename         = Child->Asl.Filename;
                   Op->Asl.ParentFilename   = Child->Asl.ParentFilename;
               }
           }
   
           /* Point all children to parent */
   
           Child->Asl.Parent = Op;
   
           /* Link children in a peer list */
   
           if (PrevChild)
           {
               PrevChild->Asl.Next = Child;
           };
   
           /* Get the comment from last child in the resource template call */
   
           if (AcpiGbl_CaptureComments &&
               (Op->Asl.ParseOpcode == PARSEOP_RESOURCETEMPLATE))
           {
               CvDbgPrint ("Transferred current comment list to this op.\n");
               Op->Asl.CommentList = Child->Asl.CommentList;
               Child->Asl.CommentList = NULL;
   
               Op->Asl.InlineComment = Child->Asl.InlineComment;
               Child->Asl.InlineComment = NULL;
           }
   
           /*
            * This child might be a list, point all ops in the list
            * to the same parent
            */
           while (Child->Asl.Next)
           {
               Child = Child->Asl.Next;
               Child->Asl.Parent = Op;
           }
   
           PrevChild = Child;
       }
   
       va_end(ap);
       DbgPrint (ASL_PARSE_OUTPUT, "\n");
       return (Op);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    TrCreateLeafOp
    *
    * PARAMETERS:  ParseOpcode         - New opcode to be assigned to the op
    *
    * RETURN:      Pointer to the new op. Aborts on allocation failure
    *
    * DESCRIPTION: Create a simple leaf op (no children or peers, and no value
    *              assigned to the op)
    *
    ******************************************************************************/
   
   ACPI_PARSE_OBJECT *
   TrCreateLeafOp (
       UINT32                  ParseOpcode)
   {
       ACPI_PARSE_OBJECT       *Op;
   
   
       Op = TrAllocateOp (ParseOpcode);
   
       DbgPrint (ASL_PARSE_OUTPUT,
           "\nCreateLeafOp  Ln/Col %u/%u NewOp %p  Op %s\n\n",
           Op->Asl.LineNumber, Op->Asl.Column, Op, UtGetOpName (ParseOpcode));
   
       return (Op);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    TrCreateValuedLeafOp
    *
    * PARAMETERS:  ParseOpcode         - New opcode to be assigned to the op
    *              Value               - Value to be assigned to the op
    *
    * RETURN:      Pointer to the new op. Aborts on allocation failure
    *
    * DESCRIPTION: Create a leaf op (no children or peers) with a value
    *              assigned to it
    *
    ******************************************************************************/
   
   ACPI_PARSE_OBJECT *
   TrCreateValuedLeafOp (
       UINT32                  ParseOpcode,
       UINT64                  Value)
   {
       ACPI_PARSE_OBJECT       *Op;
       UINT32                  i;
       char                    *StringPtr = NULL;
   
   
       Op = TrAllocateOp (ParseOpcode);
       Op->Asl.Value.Integer = Value;
   
       DbgPrint (ASL_PARSE_OUTPUT,
           "\nCreateValuedLeafOp  Ln/Col %u/%u NewOp %p  "
           "Op %s  Value %8.8X%8.8X  ",
           Op->Asl.LineNumber, Op->Asl.Column, Op, UtGetOpName(ParseOpcode),
           ACPI_FORMAT_UINT64 (Value));
   
       switch (ParseOpcode)
       {
       case PARSEOP_STRING_LITERAL:
   
           DbgPrint (ASL_PARSE_OUTPUT, "STRING->%s", Op->Asl.Value.String);
           break;
   
       case PARSEOP_NAMESEG:
   
           /* Check for mixed case (or all lower case). Issue a remark in this case */
   
           for (i = 0; i < ACPI_NAMESEG_SIZE; i++)
           {
               if (islower ((int) Op->Asl.Value.Name[i]))
               {
                   AcpiUtStrupr (&Op->Asl.Value.Name[i]);
                   AslError (ASL_REMARK, ASL_MSG_LOWER_CASE_NAMESEG, Op, Op->Asl.Value.Name);
                   break;
               }
           }
           DbgPrint (ASL_PARSE_OUTPUT, "NAMESEG->%s", Op->Asl.Value.String);
           break;
   
       case PARSEOP_NAMESTRING:
   
           /* Check for mixed case (or all lower case). Issue a remark in this case */
   
           StringPtr = Op->Asl.Value.Name;
           for (i = 0; *StringPtr; i++)
           {
               if (islower ((int) *StringPtr))
               {
                   AcpiUtStrupr (&Op->Asl.Value.Name[i]);
                   AslError (ASL_REMARK, ASL_MSG_LOWER_CASE_NAMEPATH, Op, Op->Asl.Value.Name);
                   break;
               }
               StringPtr++;
           }
           DbgPrint (ASL_PARSE_OUTPUT, "NAMESTRING->%s", Op->Asl.Value.String);
           break;
   
       case PARSEOP_EISAID:
   
           DbgPrint (ASL_PARSE_OUTPUT, "EISAID->%s", Op->Asl.Value.String);
           break;
   
       case PARSEOP_METHOD:
   
           DbgPrint (ASL_PARSE_OUTPUT, "METHOD");
           break;
   
       case PARSEOP_INTEGER:
   
           DbgPrint (ASL_PARSE_OUTPUT, "INTEGER->%8.8X%8.8X",
               ACPI_FORMAT_UINT64 (Value));
           break;
   
       default:
           break;
       }
   
       DbgPrint (ASL_PARSE_OUTPUT, "\n\n");
       return (Op);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    TrCreateTargetOp
    *
    * PARAMETERS:  OriginalOp          - Op to be copied
    *
    * RETURN:      Pointer to the new op. Aborts on allocation failure
    *
    * DESCRIPTION: Copy an existing op (and subtree). Used in ASL+ (C-style)
    *              expressions where the target is the same as one of the
    *              operands. A new op and subtree must be created from the
    *              original so that the parse tree can be linked properly.
    *
    * NOTE:        This code is specific to target operands that are the last
    *              operand in an ASL/AML operator. Meaning that the top-level
    *              parse Op in a possible subtree has a NULL Next pointer.
    *              This simplifies the recursion.
    *
    *              Subtree example:
    *                  DeRefOf (Local1) += 32
    *
    *              This gets converted to:
    *                  Add (DeRefOf (Local1), 32, DeRefOf (Local1))
    *
    *              Each DeRefOf has a single child, Local1. Even more complex
    *              subtrees can be created via the Index and DeRefOf operators.
    *
    ******************************************************************************/
   
   ACPI_PARSE_OBJECT *
   TrCreateTargetOp (
       ACPI_PARSE_OBJECT       *OriginalOp,
       ACPI_PARSE_OBJECT       *ParentOp)
   {
       ACPI_PARSE_OBJECT       *Op;
   
   
       if (!OriginalOp)
       {
           return (NULL);
       }
   
       Op = UtParseOpCacheCalloc ();
   
       /* Copy the pertinent values (omit link pointer fields) */
   
       Op->Asl.Value               = OriginalOp->Asl.Value;
       Op->Asl.Filename            = OriginalOp->Asl.Filename;
       Op->Asl.LineNumber          = OriginalOp->Asl.LineNumber;
       Op->Asl.LogicalLineNumber   = OriginalOp->Asl.LogicalLineNumber;
       Op->Asl.LogicalByteOffset   = OriginalOp->Asl.LogicalByteOffset;
       Op->Asl.Column              = OriginalOp->Asl.Column;
       Op->Asl.Flags               = OriginalOp->Asl.Flags;
       Op->Asl.CompileFlags        = OriginalOp->Asl.CompileFlags;
       Op->Asl.AmlOpcode           = OriginalOp->Asl.AmlOpcode;
       Op->Asl.ParseOpcode         = OriginalOp->Asl.ParseOpcode;
       Op->Asl.Parent              = ParentOp;
   
       UtSetParseOpName (Op);
   
       /* Copy a possible subtree below this op */
   
       if (OriginalOp->Asl.Child)
       {
           Op->Asl.Child = TrCreateTargetOp (OriginalOp->Asl.Child, Op);
       }
   
       if (OriginalOp->Asl.Next) /* Null for top-level op */
       {
           Op->Asl.Next = TrCreateTargetOp (OriginalOp->Asl.Next, ParentOp);
       }
   
       return (Op);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    TrCreateAssignmentOp
    *
    * PARAMETERS:  Target              - Assignment target
    *              Source              - Assignment source
    *
    * RETURN:      Pointer to the new op. Aborts on allocation failure
    *
    * DESCRIPTION: Implements the C-style '=' operator. It changes the parse
    *              tree if possible to utilize the last argument of the math
    *              operators which is a target operand -- thus saving invocation
    *              of and additional Store() operator. An optimization.
    *
    ******************************************************************************/
   
   ACPI_PARSE_OBJECT *
   TrCreateAssignmentOp (
       ACPI_PARSE_OBJECT       *Target,
       ACPI_PARSE_OBJECT       *Source)
   {
       ACPI_PARSE_OBJECT       *TargetOp;
       ACPI_PARSE_OBJECT       *SourceOp1;
       ACPI_PARSE_OBJECT       *SourceOp2;
       ACPI_PARSE_OBJECT       *Operator;
   
   
       DbgPrint (ASL_PARSE_OUTPUT,
           "\nTrCreateAssignmentOp  Line [%u to %u] Source %s Target %s\n",
           Source->Asl.LineNumber, Source->Asl.EndLine,
           UtGetOpName (Source->Asl.ParseOpcode),
           UtGetOpName (Target->Asl.ParseOpcode));
   
       TrSetOpFlags (Target, OP_IS_TARGET);
   
       switch (Source->Asl.ParseOpcode)
       {
       /*
        * Only these operators can be optimized because they have
        * a target operand
        */
       case PARSEOP_ADD:
       case PARSEOP_AND:
       case PARSEOP_DIVIDE:
       case PARSEOP_INDEX:
       case PARSEOP_MOD:
       case PARSEOP_MULTIPLY:
       case PARSEOP_NOT:
       case PARSEOP_OR:
       case PARSEOP_SHIFTLEFT:
       case PARSEOP_SHIFTRIGHT:
       case PARSEOP_SUBTRACT:
       case PARSEOP_XOR:
   
           break;
   
       /* Otherwise, just create a normal Store operator */
   
       default:
           goto CannotOptimize;
       }
   
       /*
        * Transform the parse tree such that the target is moved to the
        * last operand of the operator
        */
       SourceOp1 = Source->Asl.Child;
       SourceOp2 = SourceOp1->Asl.Next;
   
       /* NOT only has one operand, but has a target */
   
       if (Source->Asl.ParseOpcode == PARSEOP_NOT)
       {
           SourceOp2 = SourceOp1;
       }
   
       /* DIVIDE has an extra target operand (remainder) */
   
       if (Source->Asl.ParseOpcode == PARSEOP_DIVIDE)
       {
           SourceOp2 = SourceOp2->Asl.Next;
       }
   
       TargetOp = SourceOp2->Asl.Next;
   
       /*
        * Can't perform this optimization if there already is a target
        * for the operator (ZERO is a "no target" placeholder).
        */
       if (TargetOp->Asl.ParseOpcode != PARSEOP_ZERO)
       {
           goto CannotOptimize;
       }
   
       /* Link in the target as the final operand */
   
       SourceOp2->Asl.Next = Target;
       Target->Asl.Parent = Source;
       return (Source);
   
   
   CannotOptimize:
   
       Operator = TrAllocateOp (PARSEOP_STORE);
       TrLinkOpChildren (Operator, 2, Source, Target);
   
       /* Set the appropriate line numbers for the new op */
   
       Operator->Asl.LineNumber        = Target->Asl.LineNumber;
       Operator->Asl.LogicalLineNumber = Target->Asl.LogicalLineNumber;
       Operator->Asl.LogicalByteOffset = Target->Asl.LogicalByteOffset;
       Operator->Asl.Column            = Target->Asl.Column;
   
       return (Operator);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    TrCreateNullTargetOp
    *
    * PARAMETERS:  None
    *
    * RETURN:      Pointer to the new op. Aborts on allocation failure
    *
    * DESCRIPTION: Create a "null" target op. This is defined by the ACPI
    *              specification to be a zero AML opcode, and indicates that
    *              no target has been specified for the parent operation
    *
    ******************************************************************************/
   
   ACPI_PARSE_OBJECT *
   TrCreateNullTargetOp (
       void)
   {
       ACPI_PARSE_OBJECT       *Op;
   
   
       Op = TrAllocateOp (PARSEOP_ZERO);
       Op->Asl.CompileFlags |= (OP_IS_TARGET | OP_COMPILE_TIME_CONST);
   
       DbgPrint (ASL_PARSE_OUTPUT,
           "\nCreateNullTargetOp  Ln/Col %u/%u NewOp %p  Op %s\n",
           Op->Asl.LineNumber, Op->Asl.Column, Op,
           UtGetOpName (Op->Asl.ParseOpcode));
   
       return (Op);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    TrCreateConstantLeafOp
    *
    * PARAMETERS:  ParseOpcode         - The constant opcode
    *
    * RETURN:      Pointer to the new op. Aborts on allocation failure
    *
    * DESCRIPTION: Create a leaf op (no children or peers) for one of the
    *              special constants - __LINE__, __FILE__, and __DATE__.
    *
    * Note: The fullimplemenation of __METHOD__ cannot happen here because we
    * don't have a full parse tree at this time and cannot find the parent
    * control method. __METHOD__ must be implemented later, after the parse
    * tree has been fully constructed.
    *
    ******************************************************************************/
   
   ACPI_PARSE_OBJECT *
   TrCreateConstantLeafOp (
       UINT32                  ParseOpcode)
   {
       ACPI_PARSE_OBJECT       *Op = NULL;
       time_t                  CurrentTime;
       char                    *StaticTimeString;
       char                    *TimeString;
       char                    *Filename = NULL;
       ACPI_STATUS             Status;
   
   
       switch (ParseOpcode)
       {
       case PARSEOP___LINE__:
   
           Op = TrAllocateOp (PARSEOP_INTEGER);
           Op->Asl.Value.Integer = Op->Asl.LineNumber;
           break;
   
       case PARSEOP___METHOD__:
   
           /* Will become a string literal later */
   
           Op = TrAllocateOp (PARSEOP___METHOD__);
           Op->Asl.Value.String = NULL;
           break;
   
       case PARSEOP___PATH__:
   
           Op = TrAllocateOp (PARSEOP_STRING_LITERAL);
   
           /* Op.Asl.Filename contains the full pathname to the file */
   
           Op->Asl.Value.String = Op->Asl.Filename;
           break;
   
       case PARSEOP___FILE__:
   
           Op = TrAllocateOp (PARSEOP_STRING_LITERAL);
   
           /* Get the simple filename from the full path */
   
           Status = FlSplitInputPathname (Op->Asl.Filename, NULL, &Filename);
           if (ACPI_FAILURE (Status))
           {
               return (NULL);
           }
   
           Op->Asl.Value.String = Filename;
           break;
   
       case PARSEOP___DATE__:
   
           Op = TrAllocateOp (PARSEOP_STRING_LITERAL);
   
           /* Get a copy of the current time */
   
           Op->Asl.Value.String = "";
           CurrentTime = time (NULL);
   
           StaticTimeString = ctime (&CurrentTime);
           if (StaticTimeString)
           {
               TimeString = UtLocalCalloc (strlen (StaticTimeString) + 1);
               strcpy (TimeString, StaticTimeString);
   
               TimeString[strlen(TimeString) -1] = 0;  /* Remove trailing newline */
               Op->Asl.Value.String = TimeString;
           }
           break;
   
       default: /* This would be an internal error */
   
           return (NULL);
       }
   
       DbgPrint (ASL_PARSE_OUTPUT,
           "\nCreateConstantLeafOp  Ln/Col %u/%u NewOp %p  "
           "Op %s  Value %8.8X%8.8X  \n",
           Op->Asl.LineNumber, Op->Asl.Column, Op, UtGetOpName (ParseOpcode),
           ACPI_FORMAT_UINT64 (Op->Asl.Value.Integer));
   
       return (Op);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    TrAllocateOp
    *
    * PARAMETERS:  ParseOpcode         - Opcode to be assigned to the op
    *
    * RETURN:      New parse op. Aborts on allocation failure
    *
    * DESCRIPTION: Allocate and initialize a new parse op for the parse tree
    *
    ******************************************************************************/
   
   ACPI_PARSE_OBJECT *
   TrAllocateOp (
       UINT32                  ParseOpcode)
   {
       ACPI_PARSE_OBJECT       *Op;
       ACPI_PARSE_OBJECT       *LatestOp;
   
   
       Op = UtParseOpCacheCalloc ();
   
       Op->Asl.ParseOpcode       = (UINT16) ParseOpcode;
       Op->Asl.Filename          = AslGbl_Files[ASL_FILE_INPUT].Filename;
       Op->Asl.LineNumber        = AslGbl_CurrentLineNumber;
       Op->Asl.LogicalLineNumber = AslGbl_LogicalLineNumber;
       Op->Asl.LogicalByteOffset = AslGbl_CurrentLineOffset;
       Op->Asl.Column            = AslGbl_CurrentColumn;
   
       UtSetParseOpName (Op);
   
       /* The following is for capturing comments */
   
       if (AcpiGbl_CaptureComments)
       {
           LatestOp = AslGbl_CommentState.LatestParseOp;
           Op->Asl.InlineComment     = NULL;
           Op->Asl.EndNodeComment    = NULL;
           Op->Asl.CommentList       = NULL;
           Op->Asl.FileChanged       = FALSE;
   
           /*
            * Check to see if the file name has changed before resetting the
            * latest parse op.
            */
           if (LatestOp &&
               (ParseOpcode != PARSEOP_INCLUDE) &&
               (ParseOpcode != PARSEOP_INCLUDE_END) &&
               strcmp (LatestOp->Asl.Filename, Op->Asl.Filename))
           {
               CvDbgPrint ("latest op: %s\n", LatestOp->Asl.ParseOpName);
               Op->Asl.FileChanged = TRUE;
               if (AslGbl_IncludeFileStack)
               {
                   Op->Asl.ParentFilename = AslGbl_IncludeFileStack->Filename;
               }
               else
               {
                   Op->Asl.ParentFilename = NULL;
               }
           }
   
           AslGbl_CommentState.LatestParseOp = Op;
           CvDbgPrint ("TrAllocateOp=Set latest parse op to this op.\n");
           CvDbgPrint ("           Op->Asl.ParseOpName = %s\n",
               AslGbl_CommentState.LatestParseOp->Asl.ParseOpName);
           CvDbgPrint ("           Op->Asl.ParseOpcode = 0x%x\n", ParseOpcode);
   
           if (Op->Asl.FileChanged)
           {
               CvDbgPrint("    file has been changed!\n");
           }
   
           /*
            * if this parse op's syntax uses () and {} (i.e. Package(1){0x00}) then
            * set a flag in the comment state. This facilitates paring comments for
            * these types of opcodes.
            */
           if ((CvParseOpBlockType(Op) == (BLOCK_PAREN | BLOCK_BRACE)) &&
               (ParseOpcode != PARSEOP_DEFINITION_BLOCK))
           {
               CvDbgPrint ("Parsing paren/Brace op now!\n");
               AslGbl_CommentState.ParsingParenBraceNode = Op;
           }
   
           if (AslGbl_CommentListHead)
           {
               CvDbgPrint ("Transferring...\n");
               Op->Asl.CommentList = AslGbl_CommentListHead;
               AslGbl_CommentListHead = NULL;
               AslGbl_CommentListTail = NULL;
               CvDbgPrint ("    Transferred current comment list to this op.\n");
               CvDbgPrint ("    %s\n", Op->Asl.CommentList->Comment);
           }
   
           if (AslGbl_InlineCommentBuffer)
           {
               Op->Asl.InlineComment = AslGbl_InlineCommentBuffer;
               AslGbl_InlineCommentBuffer = NULL;
               CvDbgPrint ("Transferred current inline comment list to this op.\n");
           }
       }
   
       return (Op);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    TrPrintOpFlags
    *
    * PARAMETERS:  Flags               - Flags word to be decoded
    *              OutputLevel         - Debug output level: ASL_TREE_OUTPUT etc.
    *
    * RETURN:      None
    *
    * DESCRIPTION: Decode a flags word to text. Displays all flags that are set.
    *
    ******************************************************************************/
   
   void
   TrPrintOpFlags (
       UINT32                  Flags,
       UINT32                  OutputLevel)
   {
       UINT32                  FlagBit = 1;
       UINT32                  i;
   
   
       for (i = 0; i < ACPI_NUM_OP_FLAGS; i++)
       {
           if (Flags & FlagBit)
           {
               DbgPrint (OutputLevel, " %s", AslGbl_OpFlagNames[i]);
           }
   
           FlagBit <<= 1;
       }
   }

Cache object: 0e24a52616122ddecad078f94bd68105