示例#1
0
BOOLEAN
AnLastStatementIsReturn (
    ACPI_PARSE_OBJECT       *Op)
{
    ACPI_PARSE_OBJECT       *Next;


    /* Check if last statement is a return */

    Next = ASL_GET_CHILD_NODE (Op);
    while (Next)
    {
        if ((!Next->Asl.Next) &&
            (Next->Asl.ParseOpcode == PARSEOP_RETURN))
        {
            return (TRUE);
        }

        Next = ASL_GET_PEER_NODE (Next);
    }

    return (FALSE);
}
示例#2
0
文件: aslload.c 项目: rodero95/sys
static ACPI_STATUS
LdLoadResourceElements (
    ACPI_PARSE_OBJECT       *Op,
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_PARSE_OBJECT       *InitializerOp = NULL;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_STATUS             Status;


    /*
     * Enter the resource name into the namespace. Name must not already exist.
     * This opens a scope, so later field names are guaranteed to be new/unique.
     */
    Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Asl.Namepath,
                ACPI_TYPE_LOCAL_RESOURCE, ACPI_IMODE_LOAD_PASS1,
                ACPI_NS_NO_UPSEARCH | ACPI_NS_ERROR_IF_FOUND,
                WalkState, &Node);
    if (ACPI_FAILURE (Status))
    {
        if (Status == AE_ALREADY_EXISTS)
        {
            /* Actual node causing the error was saved in ParentMethod */

            AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS,
                (ACPI_PARSE_OBJECT *) Op->Asl.ParentMethod, Op->Asl.Namepath);
            return (AE_OK);
        }
        return (Status);
    }

    Node->Value = (UINT32) Op->Asl.Value.Integer;
    Node->Op = Op;
    Op->Asl.Node = Node;

    /*
     * Now enter the predefined fields, for easy lookup when referenced
     * by the source ASL
     */
    InitializerOp = ASL_GET_CHILD_NODE (Op);
    while (InitializerOp)
    {
        if (InitializerOp->Asl.ExternalName)
        {
            Status = AcpiNsLookup (WalkState->ScopeInfo,
                        InitializerOp->Asl.ExternalName,
                        ACPI_TYPE_LOCAL_RESOURCE_FIELD,
                        ACPI_IMODE_LOAD_PASS1,
                        ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE,
                        NULL, &Node);
            if (ACPI_FAILURE (Status))
            {
                return (Status);
            }

            /*
             * Store the field offset and length in the namespace node
             * so it can be used when the field is referenced
             */
            Node->Value = InitializerOp->Asl.Value.Tag.BitOffset;
            Node->Length = InitializerOp->Asl.Value.Tag.BitLength;
            InitializerOp->Asl.Node = Node;
            Node->Op = InitializerOp;
        }

        InitializerOp = ASL_GET_PEER_NODE (InitializerOp);
    }

    return (AE_OK);
}
void
RsDoResourceTemplate (
    ACPI_PARSE_OBJECT       *Op)
{
    ACPI_PARSE_OBJECT       *BufferLengthOp;
    ACPI_PARSE_OBJECT       *BufferOp;
    ACPI_PARSE_OBJECT       *DescriptorTypeOp;
    ACPI_PARSE_OBJECT       *LastOp = NULL;
    UINT32                  CurrentByteOffset = 0;
    ASL_RESOURCE_NODE       HeadRnode;
    ASL_RESOURCE_NODE       *PreviousRnode;
    ASL_RESOURCE_NODE       *Rnode;
    UINT8                   State;


    /* Mark parent as containing a resource template */

    if (Op->Asl.Parent)
    {
        Op->Asl.Parent->Asl.CompileFlags |= NODE_IS_RESOURCE_DESC;
    }

    /* ResourceTemplate Opcode is first (Op) */
    /* Buffer Length node is first child */

    BufferLengthOp = ASL_GET_CHILD_NODE (Op);

    /* Buffer Op is first peer */

    BufferOp = ASL_GET_PEER_NODE (BufferLengthOp);

    /* First Descriptor type is next */

    DescriptorTypeOp = ASL_GET_PEER_NODE (BufferOp);

    /*
     * Process all resource descriptors in the list
     * Note: It is assumed that the EndTag node has been automatically
     * inserted at the end of the template by the parser.
     */
    State = ACPI_RSTATE_NORMAL;
    PreviousRnode = &HeadRnode;
    while (DescriptorTypeOp)
    {
        DescriptorTypeOp->Asl.CompileFlags |= NODE_IS_RESOURCE_DESC;
        Rnode = RsDoOneResourceDescriptor (DescriptorTypeOp, CurrentByteOffset,
                    &State);

        /*
         * Update current byte offset to indicate the number of bytes from the
         * start of the buffer.  Buffer can include multiple descriptors, we
         * must keep track of the offset of not only each descriptor, but each
         * element (field) within each descriptor as well.
         */
        CurrentByteOffset += RsLinkDescriptorChain (&PreviousRnode, Rnode);

        /* Get the next descriptor in the list */

        LastOp = DescriptorTypeOp;
        DescriptorTypeOp = ASL_GET_PEER_NODE (DescriptorTypeOp);
    }

    if (State == ACPI_RSTATE_DEPENDENT_LIST)
    {
        if (LastOp)
        {
            LastOp = LastOp->Asl.Parent;
        }
        AslError (ASL_ERROR, ASL_MSG_MISSING_ENDDEPENDENT, LastOp, NULL);
    }

    /*
     * Transform the nodes into the following
     *
     * Op           -> AML_BUFFER_OP
     * First Child  -> BufferLength
     * Second Child -> Descriptor Buffer (raw byte data)
     */
    Op->Asl.ParseOpcode               = PARSEOP_BUFFER;
    Op->Asl.AmlOpcode                 = AML_BUFFER_OP;
    Op->Asl.CompileFlags              = NODE_AML_PACKAGE | NODE_IS_RESOURCE_DESC;

    BufferLengthOp->Asl.ParseOpcode   = PARSEOP_INTEGER;
    BufferLengthOp->Asl.Value.Integer = CurrentByteOffset;
    (void) OpcSetOptimalIntegerSize (BufferLengthOp);

    BufferOp->Asl.ParseOpcode         = PARSEOP_RAW_DATA;
    BufferOp->Asl.AmlOpcode           = AML_RAW_DATA_CHAIN;
    BufferOp->Asl.AmlOpcodeLength     = 0;
    BufferOp->Asl.AmlLength           = CurrentByteOffset;
    BufferOp->Asl.Value.Buffer        = (UINT8 *) HeadRnode.Next;
    BufferOp->Asl.CompileFlags       |= NODE_IS_RESOURCE_DATA;

    return;
}
示例#4
0
void
RsDoResourceTemplate (
    ACPI_PARSE_OBJECT       *Op)
{
    ACPI_PARSE_OBJECT       *BufferLengthOp;
    ACPI_PARSE_OBJECT       *BufferOp;
    ACPI_PARSE_OBJECT       *DescriptorTypeOp;
    ACPI_PARSE_OBJECT       *LastOp = NULL;
    ASL_RESOURCE_DESC       *Descriptor;
    UINT32                  CurrentByteOffset = 0;
    ASL_RESOURCE_NODE       HeadRnode;
    ASL_RESOURCE_NODE       *PreviousRnode;
    ASL_RESOURCE_NODE       *Rnode;
    UINT8                   State;


    /* ResourceTemplate Opcode is first (Op) */
    /* Buffer Length node is first child */

    BufferLengthOp = ASL_GET_CHILD_NODE (Op);

    /* Buffer Op is first peer */

    BufferOp = ASL_GET_PEER_NODE (BufferLengthOp);

    /* First Descriptor type is next */

    DescriptorTypeOp = ASL_GET_PEER_NODE (BufferOp);

    /* Process all resource descriptors in the list */

    State = ACPI_RSTATE_NORMAL;
    PreviousRnode = &HeadRnode;
    while (DescriptorTypeOp)
    {
        Rnode = RsDoOneResourceDescriptor (DescriptorTypeOp, CurrentByteOffset, &State);

        /*
         * Update current byte offset to indicate the number of bytes from the
         * start of the buffer.  Buffer can include multiple descriptors, we
         * must keep track of the offset of not only each descriptor, but each
         * element (field) within each descriptor as well.
         */
        CurrentByteOffset += RsLinkDescriptorChain (&PreviousRnode, Rnode);

        /* Get the next descriptor in the list */

        LastOp = DescriptorTypeOp;
        DescriptorTypeOp = ASL_GET_PEER_NODE (DescriptorTypeOp);
    }

    if (State == ACPI_RSTATE_DEPENDENT_LIST)
    {
        if (LastOp)
        {
            LastOp = LastOp->Asl.Parent;
        }
        AslError (ASL_ERROR, ASL_MSG_MISSING_ENDDEPENDENT, LastOp, NULL);
    }

    /*
     * Insert the EndTag descriptor after all other descriptors have been processed
     */
    Rnode = RsAllocateResourceNode (sizeof (ASL_END_TAG_DESC));

    Descriptor = Rnode->Buffer;
    Descriptor->Et.DescriptorType = ACPI_RDESC_TYPE_END_TAG |
                                        ASL_RDESC_END_TAG_SIZE;
    Descriptor->Et.Checksum = 0;

    CurrentByteOffset += RsLinkDescriptorChain (&PreviousRnode, Rnode);

    /*
     * Transform the nodes into the following
     *
     * Op           -> AML_BUFFER_OP
     * First Child  -> BufferLength
     * Second Child -> Descriptor Buffer (raw byte data)
     */
    Op->Asl.ParseOpcode               = PARSEOP_BUFFER;
    Op->Asl.AmlOpcode                 = AML_BUFFER_OP;
    Op->Asl.CompileFlags              = NODE_AML_PACKAGE;

    BufferLengthOp->Asl.ParseOpcode   = PARSEOP_INTEGER;
    BufferLengthOp->Asl.Value.Integer = CurrentByteOffset;

    (void) OpcSetOptimalIntegerSize (BufferLengthOp);

    BufferOp->Asl.ParseOpcode         = PARSEOP_RAW_DATA;
    BufferOp->Asl.AmlOpcode           = AML_RAW_DATA_CHAIN;
    BufferOp->Asl.AmlOpcodeLength     = 0;
    BufferOp->Asl.AmlLength           = CurrentByteOffset;
    BufferOp->Asl.Value.Buffer        = (UINT8 *) HeadRnode.Next;

    return;
}