Beispiel #1
0
static char *
AcpiUtPutNumber (
    char                    *String,
    UINT64                  Number,
    UINT8                   Base,
    BOOLEAN                 Upper)
{
    const char              *Digits;
    UINT64                  DigitIndex;
    char                    *Pos;


    Pos = String;
    Digits = Upper ? AcpiGbl_UpperHexDigits : AcpiGbl_LowerHexDigits;

    if (Number == 0)
    {
        *(Pos++) = '0';
    }
    else
    {
        while (Number)
        {
            (void) AcpiUtDivide (Number, Base, &Number, &DigitIndex);
            *(Pos++) = Digits[DigitIndex];
        }
    }

    /* *(Pos++) = '0'; */
    return (Pos);
}
Beispiel #2
0
ACPI_STATUS
AcpiExOpcode_2A_1T_1R (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
    ACPI_OPERAND_OBJECT     *ReturnDesc = NULL;
    UINT64                  Index;
    ACPI_STATUS             Status = AE_OK;
    ACPI_SIZE               Length = 0;


    ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_1T_1R,
        AcpiPsGetOpcodeName (WalkState->Opcode));


    /* Execute the opcode */

    if (WalkState->OpInfo->Flags & AML_MATH)
    {
        /* All simple math opcodes (add, etc.) */

        ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }

        ReturnDesc->Integer.Value = AcpiExDoMathOp (WalkState->Opcode,
                                                Operand[0]->Integer.Value,
                                                Operand[1]->Integer.Value);
        goto StoreResultToTarget;
    }

    switch (WalkState->Opcode)
    {
    case AML_MOD_OP: /* Mod (Dividend, Divisor, RemainderResult (ACPI 2.0) */

        ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }

        /* ReturnDesc will contain the remainder */

        Status = AcpiUtDivide (Operand[0]->Integer.Value,
                               Operand[1]->Integer.Value,
                               NULL,
                               &ReturnDesc->Integer.Value);
        break;

    case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */

        Status = AcpiExDoConcatenate (Operand[0], Operand[1],
                    &ReturnDesc, WalkState);
        break;

    case AML_TO_STRING_OP: /* ToString (Buffer, Length, Result) (ACPI 2.0) */
        /*
         * Input object is guaranteed to be a buffer at this point (it may have
         * been converted.)  Copy the raw buffer data to a new object of
         * type String.
         */

        /*
         * Get the length of the new string. It is the smallest of:
         * 1) Length of the input buffer
         * 2) Max length as specified in the ToString operator
         * 3) Length of input buffer up to a zero byte (null terminator)
         *
         * NOTE: A length of zero is ok, and will create a zero-length, null
         *       terminated string.
         */
        while ((Length < Operand[0]->Buffer.Length) &&
               (Length < Operand[1]->Integer.Value) &&
               (Operand[0]->Buffer.Pointer[Length]))
        {
            Length++;
        }

        /* Allocate a new string object */

        ReturnDesc = AcpiUtCreateStringObject (Length);
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }

        /*
         * Copy the raw buffer data with no transform.
         * (NULL terminated already)
         */
        ACPI_MEMCPY (ReturnDesc->String.Pointer,
            Operand[0]->Buffer.Pointer, Length);
        break;

    case AML_CONCAT_RES_OP:

        /* ConcatenateResTemplate (Buffer, Buffer, Result) (ACPI 2.0) */

        Status = AcpiExConcatTemplate (Operand[0], Operand[1],
                    &ReturnDesc, WalkState);
        break;

    case AML_INDEX_OP:              /* Index (Source Index Result) */

        /* Create the internal return object */

        ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
        if (!ReturnDesc)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }

        /* Initialize the Index reference object */

        Index = Operand[1]->Integer.Value;
        ReturnDesc->Reference.Value = (UINT32) Index;
        ReturnDesc->Reference.Class = ACPI_REFCLASS_INDEX;

        /*
         * At this point, the Source operand is a String, Buffer, or Package.
         * Verify that the index is within range.
         */
        switch ((Operand[0])->Common.Type)
        {
        case ACPI_TYPE_STRING:

            if (Index >= Operand[0]->String.Length)
            {
                Length = Operand[0]->String.Length;
                Status = AE_AML_STRING_LIMIT;
            }

            ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
            break;

        case ACPI_TYPE_BUFFER:

            if (Index >= Operand[0]->Buffer.Length)
            {
                Length = Operand[0]->Buffer.Length;
                Status = AE_AML_BUFFER_LIMIT;
            }

            ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
            break;

        case ACPI_TYPE_PACKAGE:

            if (Index >= Operand[0]->Package.Count)
            {
                Length = Operand[0]->Package.Count;
                Status = AE_AML_PACKAGE_LIMIT;
            }

            ReturnDesc->Reference.TargetType = ACPI_TYPE_PACKAGE;
            ReturnDesc->Reference.Where = &Operand[0]->Package.Elements [Index];
            break;

        default:

            Status = AE_AML_INTERNAL;
            goto Cleanup;
        }

        /* Failure means that the Index was beyond the end of the object */

        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status,
                "Index (0x%X%8.8X) is beyond end of object (length 0x%X)",
                ACPI_FORMAT_UINT64 (Index), (UINT32) Length));
            goto Cleanup;
        }

        /*
         * Save the target object and add a reference to it for the life
         * of the index
         */
        ReturnDesc->Reference.Object = Operand[0];
        AcpiUtAddReference (Operand[0]);

        /* Store the reference to the Target */

        Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);

        /* Return the reference */

        WalkState->ResultObj = ReturnDesc;
        goto Cleanup;

    default:

        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
            WalkState->Opcode));
        Status = AE_AML_BAD_OPCODE;
        break;
    }


StoreResultToTarget:

    if (ACPI_SUCCESS (Status))
    {
        /*
         * Store the result of the operation (which is now in ReturnDesc) into
         * the Target descriptor.
         */
        Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
        if (ACPI_FAILURE (Status))
        {
            goto Cleanup;
        }

        if (!WalkState->ResultObj)
        {
            WalkState->ResultObj = ReturnDesc;
        }
    }


Cleanup:

    /* Delete return object on error */

    if (ACPI_FAILURE (Status))
    {
        AcpiUtRemoveReference (ReturnDesc);
        WalkState->ResultObj = NULL;
    }

    return_ACPI_STATUS (Status);
}
Beispiel #3
0
ACPI_STATUS
AcpiExOpcode_2A_2T_1R (
    ACPI_WALK_STATE         *WalkState)
{
    ACPI_OPERAND_OBJECT     **Operand = &WalkState->Operands[0];
    ACPI_OPERAND_OBJECT     *ReturnDesc1 = NULL;
    ACPI_OPERAND_OBJECT     *ReturnDesc2 = NULL;
    ACPI_STATUS             Status;


    ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_2T_1R,
        AcpiPsGetOpcodeName (WalkState->Opcode));


    /* Execute the opcode */

    switch (WalkState->Opcode)
    {
    case AML_DIVIDE_OP:

        /* Divide (Dividend, Divisor, RemainderResult QuotientResult) */

        ReturnDesc1 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
        if (!ReturnDesc1)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }

        ReturnDesc2 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
        if (!ReturnDesc2)
        {
            Status = AE_NO_MEMORY;
            goto Cleanup;
        }

        /* Quotient to ReturnDesc1, remainder to ReturnDesc2 */

        Status = AcpiUtDivide (Operand[0]->Integer.Value,
                               Operand[1]->Integer.Value,
                               &ReturnDesc1->Integer.Value,
                               &ReturnDesc2->Integer.Value);
        if (ACPI_FAILURE (Status))
        {
            goto Cleanup;
        }
        break;

    default:

        ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
            WalkState->Opcode));
        Status = AE_AML_BAD_OPCODE;
        goto Cleanup;
    }

    /* Store the results to the target reference operands */

    Status = AcpiExStore (ReturnDesc2, Operand[2], WalkState);
    if (ACPI_FAILURE (Status))
    {
        goto Cleanup;
    }

    Status = AcpiExStore (ReturnDesc1, Operand[3], WalkState);
    if (ACPI_FAILURE (Status))
    {
        goto Cleanup;
    }

Cleanup:
    /*
     * Since the remainder is not returned indirectly, remove a reference to
     * it. Only the quotient is returned indirectly.
     */
    AcpiUtRemoveReference (ReturnDesc2);

    if (ACPI_FAILURE (Status))
    {
        /* Delete the return object */

        AcpiUtRemoveReference (ReturnDesc1);
    }

    /* Save return object (the remainder) on success */

    else
    {
        WalkState->ResultObj = ReturnDesc1;
    }

    return_ACPI_STATUS (Status);
}