C++ AcpiUtCreateInternalObject函數代碼示例

ACPI_STATUS
AcpiUtCopyIobjectToIobject (
    ACPI_OPERAND_OBJECT     *SourceDesc,
    ACPI_OPERAND_OBJECT     **DestDesc,
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (UtCopyIobjectToIobject);


    /* Create the top level object */

    *DestDesc = AcpiUtCreateInternalObject (ACPI_GET_OBJECT_TYPE (SourceDesc));
    if (!*DestDesc)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Copy the object and possible subobjects */

    if (ACPI_GET_OBJECT_TYPE (SourceDesc) == ACPI_TYPE_PACKAGE)
    {
        Status = AcpiUtCopyIpackageToIpackage (SourceDesc, *DestDesc,
                        WalkState);
    }
    else
    {
        Status = AcpiUtCopySimpleObject (SourceDesc, *DestDesc);
    }

    return_ACPI_STATUS (Status);
}

static ACPI_STATUS
AcpiExAddTable (
    UINT32                  TableIndex,
    ACPI_OPERAND_OBJECT     **DdbHandle)
{
    ACPI_OPERAND_OBJECT     *ObjDesc;


    ACPI_FUNCTION_TRACE (ExAddTable);


    /* Create an object to be the table handle */

    ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
    if (!ObjDesc)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Init the table handle */

    ObjDesc->Common.Flags |= AOPOBJ_DATA_VALID;
    ObjDesc->Reference.Class = ACPI_REFCLASS_TABLE;
    ObjDesc->Reference.Value = TableIndex;
    *DdbHandle = ObjDesc;
    return_ACPI_STATUS (AE_OK);
}

static ACPI_STATUS
AcpiDsCreateMethodMutex (
    ACPI_OPERAND_OBJECT     *MethodDesc)
{
    ACPI_OPERAND_OBJECT     *MutexDesc;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE (DsCreateMethodMutex);


    /* Create the new mutex object */

    MutexDesc = AcpiUtCreateInternalObject (ACPI_TYPE_MUTEX);
    if (!MutexDesc)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Create the actual OS Mutex */

    Status = AcpiOsCreateMutex (&MutexDesc->Mutex.OsMutex);
    if (ACPI_FAILURE (Status))
    {
        AcpiUtDeleteObjectDesc (MutexDesc);
        return_ACPI_STATUS (Status);
    }

    MutexDesc->Mutex.SyncLevel = MethodDesc->Method.SyncLevel;
    MethodDesc->Method.Mutex = MutexDesc;
    return_ACPI_STATUS (AE_OK);
}

ACPI_OPERAND_OBJECT *
AcpiUtCreatePackageObject (
    UINT32                  Count)
{
    ACPI_OPERAND_OBJECT     *PackageDesc;
    ACPI_OPERAND_OBJECT     **PackageElements;


    ACPI_FUNCTION_TRACE_U32 (UtCreatePackageObject, Count);


    /* Create a new Package object */

    PackageDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE);
    if (!PackageDesc)
    {
        return_PTR (NULL);
    }

    /*
     * Create the element array. Count+1 allows the array to be null
     * terminated.
     */
    PackageElements = ACPI_ALLOCATE_ZEROED (
                        ((ACPI_SIZE) Count + 1) * sizeof (void *));
    if (!PackageElements)
    {
        ACPI_FREE (PackageDesc);
        return_PTR (NULL);
    }

    PackageDesc->Package.Count = Count;
    PackageDesc->Package.Elements = PackageElements;
    return_PTR (PackageDesc);
}

ACPI_STATUS
AcpiExOpcode_0A_0T_1R (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_STATUS             Status = AE_OK;
    ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;


    ACPI_FUNCTION_TRACE_STR (ExOpcode_0A_0T_1R,
        AcpiPsGetOpcodeName (WalkState->Opcode));


    /* Examine the AML opcode */

    switch (WalkState->Opcode)
    {
    case AML_TIMER_OP:      /*  Timer () */

        /* Create a return object of type Integer */

        ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }
#if ACPI_MACHINE_WIDTH != 16
        ReturnDesc->Integer.Value = AcpiOsGetTimer ();
#endif
        break;

    default:                /*  Unknown opcode  */

        ACPI_ERROR ((AE_INFO, "Unknown AML opcode %X",
            WalkState->Opcode));
        Status = AE_AML_BAD_OPCODE;
        break;
    }

Cleanup:

    /* Delete return object on error */

    if ((ACPI_FAILURE (Status)) || WalkState->ResultObj)
    {
        AcpiUtRemoveReference (ReturnDesc);
    }
    else
    {
        /* Save the return value */

        WalkState->ResultObj = ReturnDesc;
    }

    return_ACPI_STATUS (Status);
}

ACPI_STATUS
AcpiDsBuildInternalObject (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op,
    ACPI_OPERAND_OBJECT     **ObjDescPtr)
{
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE ("DsBuildInternalObject");


    *ObjDescPtr = NULL;
    if (Op->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
    {
        /*
         * This is an named object reference.  If this name was
         * previously looked up in the namespace, it was stored in this op.
         * Otherwise, go ahead and look it up now
         */
        if (!Op->Common.Node)
        {
            Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Common.Value.String,
                            ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
                            ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL,
                            (ACPI_NAMESPACE_NODE **) &(Op->Common.Node));

            if (ACPI_FAILURE (Status))
            {
                ACPI_REPORT_NSERROR (Op->Common.Value.String, Status);
                return_ACPI_STATUS (Status);
            }
        }
    }

    /* Create and init the internal ACPI object */

    ObjDesc = AcpiUtCreateInternalObject ((AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode))->ObjectType);
    if (!ObjDesc)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    Status = AcpiDsInitObjectFromOp (WalkState, Op, Op->Common.AmlOpcode, &ObjDesc);
    if (ACPI_FAILURE (Status))
    {
        AcpiUtRemoveReference (ObjDesc);
        return_ACPI_STATUS (Status);
    }

    *ObjDescPtr = ObjDesc;
    return_ACPI_STATUS (AE_OK);
}

static void
AcpiPsLinkModuleCode (
    UINT8                   *AmlStart,
    UINT32                  AmlLength,
    ACPI_OWNER_ID           OwnerId)
{
    ACPI_OPERAND_OBJECT     *Prev;
    ACPI_OPERAND_OBJECT     *Next;
    ACPI_OPERAND_OBJECT     *MethodObj;


    /* Get the tail of the list */

    Prev = Next = AcpiGbl_ModuleCodeList;
    while (Next)
    {
        Prev = Next;
        Next = Next->Method.Mutex;
    }

    /*
     * Insert the module level code into the list. Merge it if it is
     * adjacent to the previous element.
     */
    if (!Prev ||
       ((Prev->Method.AmlStart + Prev->Method.AmlLength) != AmlStart))
    {
        /* Create, initialize, and link a new temporary method object */

        MethodObj = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
        if (!MethodObj)
        {
            return;
        }

        MethodObj->Method.AmlStart = AmlStart;
        MethodObj->Method.AmlLength = AmlLength;
        MethodObj->Method.OwnerId = OwnerId;
        MethodObj->Method.Flags |= AOPOBJ_MODULE_LEVEL;

        if (!Prev)
        {
            AcpiGbl_ModuleCodeList = MethodObj;
        }
        else
        {
            Prev->Method.Mutex = MethodObj;
        }
    }
    else
    {
        Prev->Method.AmlLength += AmlLength;
    }
}

ACPI_STATUS
AcpiNsAttachData (
    ACPI_NAMESPACE_NODE     *Node,
    ACPI_OBJECT_HANDLER     Handler,
    void                    *Data)
{
    ACPI_OPERAND_OBJECT     *PrevObjDesc;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *DataDesc;


    /* We only allow one attachment per handler */

    PrevObjDesc = NULL;
    ObjDesc = Node->Object;
    while (ObjDesc)
    {
        if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_DATA) &&
            (ObjDesc->Data.Handler == Handler))
        {
            return (AE_ALREADY_EXISTS);
        }

        PrevObjDesc = ObjDesc;
        ObjDesc = ObjDesc->Common.NextObject;
    }

    /* Create an internal object for the data */

    DataDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_DATA);
    if (!DataDesc)
    {
        return (AE_NO_MEMORY);
    }

    DataDesc->Data.Handler = Handler;
    DataDesc->Data.Pointer = Data;

    /* Install the data object */

    if (PrevObjDesc)
    {
        PrevObjDesc->Common.NextObject = DataDesc;
    }
    else
    {
        Node->Object = DataDesc;
    }

    return (AE_OK);
}

static ACPI_STATUS
AcpiExAddTable (
    UINT32                  TableIndex,
    ACPI_NAMESPACE_NODE     *ParentNode,
    ACPI_OPERAND_OBJECT     **DdbHandle)
{
    ACPI_STATUS             Status;
    ACPI_OPERAND_OBJECT     *ObjDesc;


    ACPI_FUNCTION_TRACE (ExAddTable);


    /* Create an object to be the table handle */

    ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
    if (!ObjDesc)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Init the table handle */

    ObjDesc->Common.Flags |= AOPOBJ_DATA_VALID;
    ObjDesc->Reference.Class = ACPI_REFCLASS_TABLE;
    *DdbHandle = ObjDesc;

    /* Install the new table into the local data structures */

    ObjDesc->Reference.Value = TableIndex;

    /* Add the table to the namespace */

    Status = AcpiNsLoadTable (TableIndex, ParentNode);
    if (ACPI_FAILURE (Status))
    {
        AcpiUtRemoveReference (ObjDesc);
        *DdbHandle = NULL;
        return_ACPI_STATUS (Status);
    }

    /* Execute any module-level code that was found in the table */

    AcpiExExitInterpreter ();
    AcpiNsExecModuleCodeList ();
    AcpiExEnterInterpreter ();

    return_ACPI_STATUS (Status);
}

ACPI_OPERAND_OBJECT *
AcpiUtCreateBufferObject (
    ACPI_SIZE               BufferSize)
{
    ACPI_OPERAND_OBJECT     *BufferDesc;
    UINT8                   *Buffer = NULL;


    ACPI_FUNCTION_TRACE_U32 (UtCreateBufferObject, BufferSize);


    /* Create a new Buffer object */

    BufferDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
    if (!BufferDesc)
    {
        return_PTR (NULL);
    }

    /* Create an actual buffer only if size > 0 */

    if (BufferSize > 0)
    {
        /* Allocate the actual buffer */

        Buffer = ACPI_ALLOCATE_ZEROED (BufferSize);
        if (!Buffer)
        {
            ACPI_ERROR ((AE_INFO, "Could not allocate size %u",
                (UINT32) BufferSize));

            AcpiUtRemoveReference (BufferDesc);
            return_PTR (NULL);
        }
    }

    /* Complete buffer object initialization */

    BufferDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
    BufferDesc->Buffer.Pointer = Buffer;
    BufferDesc->Buffer.Length = (UINT32) BufferSize;

    /* Return the new buffer descriptor */

    return_PTR (BufferDesc);
}

ACPI_OPERAND_OBJECT *
AcpiUtCreateStringObject (
    ACPI_SIZE               StringSize)
{
    ACPI_OPERAND_OBJECT     *StringDesc;
    char                    *String;


    ACPI_FUNCTION_TRACE_U32 (UtCreateStringObject, StringSize);


    /* Create a new String object */

    StringDesc = AcpiUtCreateInternalObject (ACPI_TYPE_STRING);
    if (!StringDesc)
    {
        return_PTR (NULL);
    }

    /*
     * Allocate the actual string buffer -- (Size + 1) for NULL terminator.
     * NOTE: Zero-length strings are NULL terminated
     */
    String = ACPI_ALLOCATE_ZEROED (StringSize + 1);
    if (!String)
    {
        ACPI_ERROR ((AE_INFO, "Could not allocate size %u",
            (UINT32) StringSize));

        AcpiUtRemoveReference (StringDesc);
        return_PTR (NULL);
    }

    /* Complete string object initialization */

    StringDesc->String.Pointer = String;
    StringDesc->String.Length = (UINT32) StringSize;

    /* Return the new string descriptor */

    return_PTR (StringDesc);
}

ACPI_OPERAND_OBJECT *
AcpiUtCreateBufferObject (
    ACPI_SIZE               BufferSize)
{
    ACPI_OPERAND_OBJECT     *BufferDesc;
    UINT8                   *Buffer;


    ACPI_FUNCTION_TRACE_U32 ("UtCreateBufferObject", BufferSize);


    /*
     * Create a new Buffer object
     */
    BufferDesc = AcpiUtCreateInternalObject (ACPI_TYPE_BUFFER);
    if (!BufferDesc)
    {
        return_PTR (NULL);
    }

    /* Allocate the actual buffer */

    Buffer = ACPI_MEM_CALLOCATE (BufferSize);
    if (!Buffer)
    {
        ACPI_REPORT_ERROR (("CreateBuffer: could not allocate size %X\n", 
            (UINT32) BufferSize));
        AcpiUtRemoveReference (BufferDesc);
        return_PTR (NULL);
    }

    /* Complete buffer object initialization */

    BufferDesc->Buffer.Flags |= AOPOBJ_DATA_VALID;
    BufferDesc->Buffer.Pointer = Buffer;
    BufferDesc->Buffer.Length = (UINT32) BufferSize;

    /* Return the new buffer descriptor */

    return_PTR (BufferDesc);
}

ACPI_OPERAND_OBJECT *
AcpiUtCreateIntegerObject (
    UINT64                  InitialValue)
{
    ACPI_OPERAND_OBJECT     *IntegerDesc;


    ACPI_FUNCTION_TRACE (UtCreateIntegerObject);


    /* Create and initialize a new integer object */

    IntegerDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
    if (!IntegerDesc)
    {
        return_PTR (NULL);
    }

    IntegerDesc->Integer.Value = InitialValue;
    return_PTR (IntegerDesc);
}

void
AcpiDmAddExternalsToNamespace (
    void)
{
    ACPI_STATUS             Status;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_OPERAND_OBJECT     *MethodDesc;
    ACPI_EXTERNAL_LIST      *External = AcpiGbl_ExternalList;


    while (External)
    {
        /* Add the external name (object) into the namespace */

        Status = AcpiNsLookup (NULL, External->InternalPath, External->Type,
                   ACPI_IMODE_LOAD_PASS1,
                   ACPI_NS_EXTERNAL | ACPI_NS_DONT_OPEN_SCOPE,
                   NULL, &Node);

        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status,
                "while adding external to namespace [%s]",
                External->Path));
        }
        else if (External->Type == ACPI_TYPE_METHOD)
        {
            /* For methods, we need to save the argument count */

            MethodDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
            MethodDesc->Method.ParamCount = (UINT8) External->Value;
            Node->Object = MethodDesc;
        }

        External = External->Next;
    }
}

ACPI_STATUS
AcpiDsBuildInternalPackageObj (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op,
    UINT32                  ElementCount,
    ACPI_OPERAND_OBJECT     **ObjDescPtr)
{
    ACPI_PARSE_OBJECT       *Arg;
    ACPI_PARSE_OBJECT       *Parent;
    ACPI_OPERAND_OBJECT     *ObjDesc = NULL;
    ACPI_STATUS             Status = AE_OK;
    UINT32                  i;
    UINT16                  Index;
    UINT16                  ReferenceCount;


    ACPI_FUNCTION_TRACE (DsBuildInternalPackageObj);


    /* Find the parent of a possibly nested package */

    Parent = Op->Common.Parent;
    while ((Parent->Common.AmlOpcode == AML_PACKAGE_OP) ||
           (Parent->Common.AmlOpcode == AML_VAR_PACKAGE_OP))
    {
        Parent = Parent->Common.Parent;
    }

    /*
     * If we are evaluating a Named package object "Name (xxxx, Package)",
     * the package object already exists, otherwise it must be created.
     */
    ObjDesc = *ObjDescPtr;
    if (!ObjDesc)
    {
        ObjDesc = AcpiUtCreateInternalObject (ACPI_TYPE_PACKAGE);
        *ObjDescPtr = ObjDesc;
        if (!ObjDesc)
        {
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        ObjDesc->Package.Node = Parent->Common.Node;
    }

    /*
     * Allocate the element array (array of pointers to the individual
     * objects) based on the NumElements parameter. Add an extra pointer slot
     * so that the list is always null terminated.
     */
    ObjDesc->Package.Elements = ACPI_ALLOCATE_ZEROED (
        ((ACPI_SIZE) ElementCount + 1) * sizeof (void *));

    if (!ObjDesc->Package.Elements)
    {
        AcpiUtDeleteObjectDesc (ObjDesc);
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    ObjDesc->Package.Count = ElementCount;

    /*
     * Initialize the elements of the package, up to the NumElements count.
     * Package is automatically padded with uninitialized (NULL) elements
     * if NumElements is greater than the package list length. Likewise,
     * Package is truncated if NumElements is less than the list length.
     */
    Arg = Op->Common.Value.Arg;
    Arg = Arg->Common.Next;
    for (i = 0; Arg && (i < ElementCount); i++)
    {
        if (Arg->Common.AmlOpcode == AML_INT_RETURN_VALUE_OP)
        {
            if (Arg->Common.Node->Type == ACPI_TYPE_METHOD)
            {
                /*
                 * A method reference "looks" to the parser to be a method
                 * invocation, so we special case it here
                 */
                Arg->Common.AmlOpcode = AML_INT_NAMEPATH_OP;
                Status = AcpiDsBuildInternalObject (WalkState, Arg,
                            &ObjDesc->Package.Elements[i]);
            }
            else
            {
                /* This package element is already built, just get it */

                ObjDesc->Package.Elements[i] =
                    ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, Arg->Common.Node);
            }
        }
        else
        {
            Status = AcpiDsBuildInternalObject (WalkState, Arg,
                        &ObjDesc->Package.Elements[i]);
        }

        if (*ObjDescPtr)
        {
            /* Existing package, get existing reference count */
//.........這裏部分代碼省略.........