utmisc.c

acpi tools for linux include acpiexec and acpixtract

 *
 ******************************************************************************/

void
AcpiUtStrupr (
    char                    *SrcString)
{
    char                    *String;


    ACPI_FUNCTION_ENTRY ();


    if (!SrcString)
    {
        return;
    }

    /* Walk entire string, uppercasing the letters */

    for (String = SrcString; *String; String++)
    {
        *String = (char) ACPI_TOUPPER (*String);
    }

    return;
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtPrintString
 *
 * PARAMETERS:  String          - Null terminated ASCII string
 *              MaxLength       - Maximum output length
 *
 * RETURN:      None
 *
 * DESCRIPTION: Dump an ASCII string with support for ACPI-defined escape
 *              sequences.
 *
 ******************************************************************************/

void
AcpiUtPrintString (
    char                    *String,
    UINT8                   MaxLength)
{
    UINT32                  i;


    if (!String)
    {
        AcpiOsPrintf ("<\"NULL STRING PTR\">");
        return;
    }

    AcpiOsPrintf ("\"");
    for (i = 0; String[i] && (i < MaxLength); i++)
    {
        /* Escape sequences */

        switch (String[i])
        {
        case 0x07:
            AcpiOsPrintf ("\\a");       /* BELL */
            break;

        case 0x08:
            AcpiOsPrintf ("\\b");       /* BACKSPACE */
            break;

        case 0x0C:
            AcpiOsPrintf ("\\f");       /* FORMFEED */
            break;

        case 0x0A:
            AcpiOsPrintf ("\\n");       /* LINEFEED */
            break;

        case 0x0D:
            AcpiOsPrintf ("\\r");       /* CARRIAGE RETURN*/
            break;

        case 0x09:
            AcpiOsPrintf ("\\t");       /* HORIZONTAL TAB */
            break;

        case 0x0B:
            AcpiOsPrintf ("\\v");       /* VERTICAL TAB */
            break;

        case '\'':                      /* Single Quote */
        case '\"':                      /* Double Quote */
        case '\\':                      /* Backslash */
            AcpiOsPrintf ("\\%c", (int) String[i]);
            break;

        default:

            /* Check for printable character or hex escape */

            if (ACPI_IS_PRINT (String[i]))
            {
                /* This is a normal character */

                AcpiOsPrintf ("%c", (int) String[i]);
            }
            else
            {
                /* All others will be Hex escapes */

                AcpiOsPrintf ("\\x%2.2X", (INT32) String[i]);
            }
            break;
        }
    }
    AcpiOsPrintf ("\"");

    if (i == MaxLength && String[i])
    {
        AcpiOsPrintf ("...");
    }
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtDwordByteSwap
 *
 * PARAMETERS:  Value           - Value to be converted
 *
 * RETURN:      UINT32 integer with bytes swapped
 *
 * DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
 *
 ******************************************************************************/

UINT32
AcpiUtDwordByteSwap (
    UINT32                  Value)
{
    union
    {
        UINT32              Value;
        UINT8               Bytes[4];
    } Out;
    union
    {
        UINT32              Value;
        UINT8               Bytes[4];
    } In;


    ACPI_FUNCTION_ENTRY ();


    In.Value = Value;

    Out.Bytes[0] = In.Bytes[3];
    Out.Bytes[1] = In.Bytes[2];
    Out.Bytes[2] = In.Bytes[1];
    Out.Bytes[3] = In.Bytes[0];

    return (Out.Value);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtSetIntegerWidth
 *
 * PARAMETERS:  Revision            From DSDT header
 *
 * RETURN:      None
 *
 * DESCRIPTION: Set the global integer bit width based upon the revision
 *              of the DSDT.  For Revision 1 and 0, Integers are 32 bits.
 *              For Revision 2 and above, Integers are 64 bits.  Yes, this
 *              makes a difference.
 *
 ******************************************************************************/

void
AcpiUtSetIntegerWidth (
    UINT8                   Revision)
{

    if (Revision < 2)
    {
        /* 32-bit case */

        AcpiGbl_IntegerBitWidth    = 32;
        AcpiGbl_IntegerNybbleWidth = 8;
        AcpiGbl_IntegerByteWidth   = 4;
    }
    else
    {
        /* 64-bit case (ACPI 2.0+) */

        AcpiGbl_IntegerBitWidth    = 64;
        AcpiGbl_IntegerNybbleWidth = 16;
        AcpiGbl_IntegerByteWidth   = 8;
    }
}


#ifdef ACPI_DEBUG_OUTPUT
/*******************************************************************************
 *
 * FUNCTION:    AcpiUtDisplayInitPathname
 *
 * PARAMETERS:  Type                - Object type of the node
 *              ObjHandle           - Handle whose pathname will be displayed
 *              Path                - Additional path string to be appended.
 *                                      (NULL if no extra path)
 *
 * RETURN:      ACPI_STATUS
 *
 * DESCRIPTION: Display full pathname of an object, DEBUG ONLY
 *
 ******************************************************************************/

void
AcpiUtDisplayInitPathname (
    UINT8                   Type,
    ACPI_NAMESPACE_NODE     *ObjHandle,
    char                    *Path)
{
    ACPI_STATUS             Status;
    ACPI_BUFFER             Buffer;


    ACPI_FUNCTION_ENTRY ();


    /* Only print the path if the appropriate debug level is enabled */

    if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES))
    {
        return;
    }

    /* Get the full pathname to the node */

    Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
    Status = AcpiNsHandleToPathname (ObjHandle, &Buffer);
    if (ACPI_FAILURE (Status))
    {
        return;
    }

    /* Print what we're doing */

    switch (Type)
    {
    case ACPI_TYPE_METHOD:
        AcpiOsPrintf ("Executing    ");
        break;

    default:
        AcpiOsPrintf ("Initializing ");
        break;
    }

    /* Print the object type and pathname */

    AcpiOsPrintf ("%-12s  %s",
        AcpiUtGetTypeName (Type), (char *) Buffer.Pointer);

    /* Extra path is used to append names like _STA, _INI, etc. */

    if (Path)
    {
        AcpiOsPrintf (".%s", Path);
    }
    AcpiOsPrintf ("\n");

    ACPI_FREE (Buffer.Pointer);
}
#endif


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtValidAcpiChar
 *
 * PARAMETERS:  Char            - The character to be examined
 *              Position        - Byte position (0-3)
 *
 * RETURN:      TRUE if the character is valid, FALSE otherwise
 *
 * DESCRIPTION: Check for a valid ACPI character. Must be one of:
 *              1) Upper case alpha
 *              2) numeric
 *              3) underscore
 *
 *              We allow a '!' as the last character because of the ASF! table
 *
 ******************************************************************************/

BOOLEAN
AcpiUtValidAcpiChar (
    char                    Character,
    ACPI_NATIVE_UINT        Position)
{

    if (!((Character >= 'A' && Character <= 'Z') ||
          (Character >= '0' && Character <= '9') ||
          (Character == '_')))
    {
        /* Allow a '!' in the last position */

        if (Character == '!' && Position == 3)
        {
            return (TRUE);
        }

        return (FALSE);
    }

    return (TRUE);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtValidAcpiName
 *
 * PARAMETERS:  Name            - The name to be examined
 *
 * RETURN:      TRUE if the name is valid, FALSE otherwise
 *
 * DESCRIPTION: Check for a valid ACPI name.  Each character must be one of:
 *              1) Upper case alpha
 *              2) numeric
 *              3) underscore
 *
 ******************************************************************************/

BOOLEAN
AcpiUtValidAcpiName (
    UINT32                  Name)
{
    ACPI_NATIVE_UINT        i;


    ACPI_FUNCTION_ENTRY ();


    for (i = 0; i < ACPI_NAME_SIZE; i++)
    {
        if (!AcpiUtValidAcpiChar ((ACPI_CAST_PTR (char, &Name))[i], i))
        {
            return (FALSE);
        }
    }

    return (TRUE);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtRepairName
 *
 * PARAMETERS:  Name            - The ACPI name to be repaired
 *
 * RETURN:      Repaired version of the name
 *
 * DESCRIPTION: Repair an ACPI name: Change invalid characters to '*' and
 *              return the new name.
 *
 ******************************************************************************/

ACPI_NAME
AcpiUtRepairName (
    char                    *Name)
{
    ACPI_NATIVE_UINT        i;
    char                    NewName[ACPI_NAME_SIZE];


    for (i = 0; i < ACPI_NAME_SIZE; i++)
    {
        NewName[i] = Name[i];

        /*
         * Replace a bad character with something printable, yet technically
         * still invalid. This prevents any collisions with existing "good"
         * names in the namespace.
         */
        if (!AcpiUtValidAcpiChar (Name[i], i))
        {
            NewName[i] = '*';
        }
    }

    return (*(UINT32 *) NewName);
}


/*******************************************************************************
 *
 * FUNCTION:    AcpiUtStrtoul64
 *
 * PARAMETERS:  String          - Null terminated string
 *              Base            - Radix of the string: 16 or ACPI_ANY_BASE;
 *                                ACPI_ANY_BASE means 'in behalf of ToInteger'
 *              RetInteger      - Where the converted integer is returned
 *
 * RETURN:      Status and Converted value
 *
 * DESCRIPTION: Convert a string into an unsigned value. Performs either a
 *              32-bit or 64-bit conversion, depending on the current mode
 *              of the interpreter.
 *              NOTE: Does not support Octal strings, not needed.
 *
 ******************************************************************************/

ACPI_STATUS
AcpiUtStrtoul64 (
    char                    *String,
    UINT32                  Base,
    ACPI_INTEGER            *RetInteger)
{
    UINT32                  ThisDigit = 0;
    ACPI_INTEGER            ReturnValue = 0;
    ACPI_INTEGER            Quotient;
    ACPI_INTEGER            Dividend;
    UINT32                  ToIntegerOp = (Base == ACPI_ANY_BASE);
    UINT32                  Mode32 = (AcpiGbl_IntegerByteWidth == 4);
    UINT8                   ValidDigits = 0;
    UINT8                   SignOf0x = 0;
    UINT8                   Term = 0;


    ACPI_FUNCTION_TRACE_STR (UtStroul64, String);