void AcpiExTruncateFor32bitTable ( ACPI_OPERAND_OBJECT * ObjDesc )

Definition at line 313 of file exutils.c.

Referenced by AcpiDsExecEndOp(), AcpiDsGetPredicateValue(), AcpiDsInitObjectFromOp(), AcpiExConvertToInteger(), and AcpiExStoreObjectToObject().

{

    ACPI_FUNCTION_ENTRY ();


    /*
     * Object must be a valid number and we must be executing
     * a control method. NS node could be there for AML_INT_NAMEPATH_OP.
     */
    if ((!ObjDesc) ||
        (ACPI_GET_DESCRIPTOR_TYPE (ObjDesc) != ACPI_DESC_TYPE_OPERAND) ||
        (ObjDesc->Common.Type != ACPI_TYPE_INTEGER))
    {
        return;
    }

    if (AcpiGbl_IntegerByteWidth == 4)
    {
        /*
         * We are running a method that exists in a 32-bit ACPI table.
         * Truncate the value to 32 bits by zeroing out the upper 32-bit field
         */
        ObjDesc->Integer.Value &= (UINT64) ACPI_UINT32_MAX;
    }
}

ReactOS Development > Doxygen