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

 *

 * Module Name: exoparg2 - AML execution - opcodes with 2 arguments

 *

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

/*

 * Copyright (C) 2000 - 2004, R. Byron Moore

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions, and the following disclaimer,

 *    without modification.

 * 2. Redistributions in binary form must reproduce at minimum a disclaimer

 *    substantially similar to the "NO WARRANTY" disclaimer below

 *    ("Disclaimer") and any redistribution must be conditioned upon

 *    including a substantially similar Disclaimer requirement for further

 *    binary redistribution.

 * 3. Neither the names of the above-listed copyright holders nor the names

 *    of any contributors may be used to endorse or promote products derived

 *    from this software without specific prior written permission.

 *

 * Alternatively, this software may be distributed under the terms of the

 * GNU General Public License ("GPL") version 2 as published by the Free

 * Software Foundation.

 *

 * NO WARRANTY

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGES.

 */

#include <acpi/acpi.h>

#include <acpi/acparser.h>

#include <acpi/acinterp.h>

#include <acpi/acevents.h>

#include <acpi/amlcode.h>

#define _COMPONENT          ACPI_EXECUTER

         ACPI_MODULE_NAME    ("exoparg2")

/*!

 * Naming convention for AML interpreter execution routines.

 *

 * The routines that begin execution of AML opcodes are named with a common

 * convention based upon the number of arguments, the number of target operands,

 * and whether or not a value is returned:

 *

 *      AcpiExOpcode_xA_yT_zR

 *

 * Where:

 *

 * xA - ARGUMENTS:    The number of arguments (input operands) that are

 *                    required for this opcode type (1 through 6 args).

 * yT - TARGETS:      The number of targets (output operands) that are required

 *                    for this opcode type (0, 1, or 2 targets).

 * zR - RETURN VALUE: Indicates whether this opcode type returns a value

 *                    as the function return (0 or 1).

 *

 * The AcpiExOpcode* functions are called via the Dispatcher component with

 * fully resolved operands.

!*/

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

 *

 * FUNCTION:    acpi_ex_opcode_2A_0T_0R

 *

 * PARAMETERS:  walk_state          - Current walk state

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Execute opcode with two arguments, no target, and no return

 *              value.

 *

 * ALLOCATION:  Deletes both operands

 *

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

acpi_status

acpi_ex_opcode_2A_0T_0R (

        struct acpi_walk_state          *walk_state)

{

        union acpi_operand_object       **operand = &walk_state->operands[0];

        struct acpi_namespace_node      *node;

        acpi_status                     status = AE_OK;

        ACPI_FUNCTION_TRACE_STR ("ex_opcode_2A_0T_0R",

                        acpi_ps_get_opcode_name (walk_state->opcode));

        /* Examine the opcode */

        switch (walk_state->opcode) {

        case AML_NOTIFY_OP:         /* Notify (notify_object, notify_value) */

                /* The first operand is a namespace node */

                node = (struct acpi_namespace_node *) operand[0];

                /* Notifies allowed on this object? */

                if (!acpi_ev_is_notify_object (node)) {

                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unexpected notify object type [%s]\n",

                                        acpi_ut_get_type_name (node->type)));

                        status = AE_AML_OPERAND_TYPE;

                        break;

                }

                /*

                 * Dispatch the notify to the appropriate handler

                 * NOTE: the request is queued for execution after this method

                 * completes.  The notify handlers are NOT invoked synchronously

                 * from this thread -- because handlers may in turn run other

                 * control methods.

                 */

                status = acpi_ev_queue_notify_request (node,

                                  (u32) operand[1]->integer.value);

                break;

        default:

                ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_0T_0R: Unknown opcode %X\n",

                                walk_state->opcode));

                status = AE_AML_BAD_OPCODE;

        }

        return_ACPI_STATUS (status);

}

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

 *

 * FUNCTION:    acpi_ex_opcode_2A_2T_1R

 *

 * PARAMETERS:  walk_state          - Current walk state

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets

 *              and one implicit return value.

 *

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

acpi_status

acpi_ex_opcode_2A_2T_1R (

        struct acpi_walk_state          *walk_state)

{

        union acpi_operand_object       **operand = &walk_state->operands[0];

        union acpi_operand_object       *return_desc1 = NULL;

        union acpi_operand_object       *return_desc2 = NULL;

        acpi_status                     status;

        ACPI_FUNCTION_TRACE_STR ("ex_opcode_2A_2T_1R", acpi_ps_get_opcode_name (walk_state->opcode));

        /*

         * Execute the opcode

         */

        switch (walk_state->opcode) {

        case AML_DIVIDE_OP:             /* Divide (Dividend, Divisor, remainder_result quotient_result) */

                return_desc1 = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);

                if (!return_desc1) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                return_desc2 = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);

                if (!return_desc2) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                /* Quotient to return_desc1, remainder to return_desc2 */

                status = acpi_ut_divide (&operand[0]->integer.value, &operand[1]->integer.value,

                                   &return_desc1->integer.value, &return_desc2->integer.value);

                if (ACPI_FAILURE (status)) {

                        goto cleanup;

                }

                break;

        default:

                ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_2T_1R: Unknown opcode %X\n",

                                walk_state->opcode));

                status = AE_AML_BAD_OPCODE;

                goto cleanup;

        }

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

        status = acpi_ex_store (return_desc2, operand[2], walk_state);

        if (ACPI_FAILURE (status)) {

                goto cleanup;

        }

        status = acpi_ex_store (return_desc1, operand[3], walk_state);

        if (ACPI_FAILURE (status)) {

                goto cleanup;

        }

        /* Return the remainder */

        walk_state->result_obj = return_desc1;

cleanup:

        /*

         * Since the remainder is not returned indirectly, remove a reference to

         * it. Only the quotient is returned indirectly.

         */

        acpi_ut_remove_reference (return_desc2);

        if (ACPI_FAILURE (status)) {

                /* Delete the return object */

                acpi_ut_remove_reference (return_desc1);

        }

        return_ACPI_STATUS (status);

}

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

 *

 * FUNCTION:    acpi_ex_opcode_2A_1T_1R

 *

 * PARAMETERS:  walk_state          - Current walk state

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Execute opcode with two arguments, one target, and a return

 *              value.

 *

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

acpi_status

acpi_ex_opcode_2A_1T_1R (

        struct acpi_walk_state          *walk_state)

{

        union acpi_operand_object       **operand = &walk_state->operands[0];

        union acpi_operand_object       *return_desc = NULL;

        union acpi_operand_object       *temp_desc = NULL;

        u32                             index;

        acpi_status                     status = AE_OK;

        acpi_size                       length;

        ACPI_FUNCTION_TRACE_STR ("ex_opcode_2A_1T_1R", acpi_ps_get_opcode_name (walk_state->opcode));

        /*

         * Execute the opcode

         */

        if (walk_state->op_info->flags & AML_MATH) {

                /* All simple math opcodes (add, etc.) */

                return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);

                if (!return_desc) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                return_desc->integer.value = acpi_ex_do_math_op (walk_state->opcode,

                                  operand[0]->integer.value,

                                  operand[1]->integer.value);

                goto store_result_to_target;

        }

        switch (walk_state->opcode) {

        case AML_MOD_OP:                /* Mod (Dividend, Divisor, remainder_result (ACPI 2.0) */

                return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);

                if (!return_desc) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                /* return_desc will contain the remainder */

                status = acpi_ut_divide (&operand[0]->integer.value, &operand[1]->integer.value,

                                  NULL, &return_desc->integer.value);

                break;

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

                /*

                 * Convert the second operand if necessary.  The first operand

                 * determines the type of the second operand, (See the Data Types

                 * section of the ACPI specification.)  Both object types are

                 * guaranteed to be either Integer/String/Buffer by the operand

                 * resolution mechanism above.

                 */

                switch (ACPI_GET_OBJECT_TYPE (operand[0])) {

                case ACPI_TYPE_INTEGER:

                        status = acpi_ex_convert_to_integer (operand[1], &temp_desc, walk_state);

                        break;

                case ACPI_TYPE_STRING:

                        status = acpi_ex_convert_to_string (operand[1], &temp_desc, 16, ACPI_UINT32_MAX, walk_state);

                        break;

                case ACPI_TYPE_BUFFER:

                        status = acpi_ex_convert_to_buffer (operand[1], &temp_desc, walk_state);

                        break;

                default:

                        ACPI_REPORT_ERROR (("Concat - invalid obj type: %X\n",

                                        ACPI_GET_OBJECT_TYPE (operand[0])));

                        status = AE_AML_INTERNAL;

                }

                if (ACPI_FAILURE (status)) {

                        goto cleanup;

                }

                /*

                 * Both operands are now known to be the same object type

                 * (Both are Integer, String, or Buffer), and we can now perform the

                 * concatenation.

                 */

                status = acpi_ex_do_concatenate (operand[0], temp_desc, &return_desc, walk_state);

                if (temp_desc != operand[1]) {

                        acpi_ut_remove_reference (temp_desc);

                }

                break;

        case AML_TO_STRING_OP:          /* to_string (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 */

                length = 0;

                if (operand[1]->integer.value == 0) {

                        /* Handle optional length value */

                        operand[1]->integer.value = ACPI_INTEGER_MAX;

                }

                while ((length < operand[0]->buffer.length) &&

                           (length < operand[1]->integer.value) &&

                           (operand[0]->buffer.pointer[length])) {

                        length++;

                }

                if (length > ACPI_MAX_STRING_CONVERSION) {

                        status = AE_AML_STRING_LIMIT;

                        goto cleanup;

                }

                /* Create the internal return object */

                return_desc = acpi_ut_create_internal_object (ACPI_TYPE_STRING);

                if (!return_desc) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                /* Allocate a new string buffer (Length + 1 for null terminator) */

                return_desc->string.pointer = ACPI_MEM_CALLOCATE (length + 1);

                if (!return_desc->string.pointer) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                /* Copy the raw buffer data with no transform */

                ACPI_MEMCPY (return_desc->string.pointer, operand[0]->buffer.pointer, length);

                /* Set the string length */

                return_desc->string.length = (u32) length;

                break;

        case AML_CONCAT_RES_OP:         /* concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */

                status = acpi_ex_concat_template (operand[0], operand[1], &return_desc, walk_state);

                break;

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

                /* Create the internal return object */

                return_desc = acpi_ut_create_internal_object (ACPI_TYPE_LOCAL_REFERENCE);

                if (!return_desc) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                index = (u32) operand[1]->integer.value;

                /*

                 * At this point, the Source operand is either a Package or a Buffer

                 */

                if (ACPI_GET_OBJECT_TYPE (operand[0]) == ACPI_TYPE_PACKAGE) {

                        /* Object to be indexed is a Package */

                        if (index >= operand[0]->package.count) {

                                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Index value (%X) beyond package end (%X)\n",

                                        index, operand[0]->package.count));

                                status = AE_AML_PACKAGE_LIMIT;

                                goto cleanup;

                        }

                        return_desc->reference.target_type = ACPI_TYPE_PACKAGE;

                        return_desc->reference.object    = operand[0];

                        return_desc->reference.where     = &operand[0]->package.elements [index];

                }

                else {

                        /* Object to be indexed is a Buffer */

                        if (index >= operand[0]->buffer.length) {

                                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Index value (%X) beyond end of buffer (%X)\n",

                                        index, operand[0]->buffer.length));

                                status = AE_AML_BUFFER_LIMIT;

                                goto cleanup;

                        }

                        return_desc->reference.target_type = ACPI_TYPE_BUFFER_FIELD;

                        return_desc->reference.object    = operand[0];

                }

                /* Complete the Index reference object */

                return_desc->reference.opcode    = AML_INDEX_OP;

                return_desc->reference.offset    = index;

                /* Store the reference to the Target */

                status = acpi_ex_store (return_desc, operand[2], walk_state);

                /* Return the reference */

                walk_state->result_obj = return_desc;

                goto cleanup;

        default:

                ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_1T_1R: Unknown opcode %X\n",

                                walk_state->opcode));

                status = AE_AML_BAD_OPCODE;

                break;

        }

store_result_to_target:

        if (ACPI_SUCCESS (status)) {

                /*

                 * Store the result of the operation (which is now in return_desc) into

                 * the Target descriptor.

                 */

                status = acpi_ex_store (return_desc, operand[2], walk_state);

                if (ACPI_FAILURE (status)) {

                        goto cleanup;

                }

                if (!walk_state->result_obj) {

                        walk_state->result_obj = return_desc;

                }

        }

cleanup:

        /* Delete return object on error */

        if (ACPI_FAILURE (status)) {

                acpi_ut_remove_reference (return_desc);

        }

        return_ACPI_STATUS (status);

}

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

 *

 * FUNCTION:    acpi_ex_opcode_2A_0T_1R

 *

 * PARAMETERS:  walk_state          - Current walk state

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value

 *

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

acpi_status

acpi_ex_opcode_2A_0T_1R (

        struct acpi_walk_state          *walk_state)

{

        union acpi_operand_object       **operand = &walk_state->operands[0];

        union acpi_operand_object       *return_desc = NULL;

        acpi_status                     status = AE_OK;

        u8                              logical_result = FALSE;

        ACPI_FUNCTION_TRACE_STR ("ex_opcode_2A_0T_1R", acpi_ps_get_opcode_name (walk_state->opcode));

        /* Create the internal return object */

        return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);

        if (!return_desc) {

                status = AE_NO_MEMORY;

                goto cleanup;

        }

        /*

         * Execute the Opcode

         */

        if (walk_state->op_info->flags & AML_LOGICAL) /* logical_op (Operand0, Operand1) */ {

                logical_result = acpi_ex_do_logical_op (walk_state->opcode,

                                 operand[0]->integer.value,

                                 operand[1]->integer.value);

                goto store_logical_result;

        }

        switch (walk_state->opcode) {

        case AML_ACQUIRE_OP:            /* Acquire (mutex_object, Timeout) */

                status = acpi_ex_acquire_mutex (operand[1], operand[0], walk_state);

                if (status == AE_TIME) {

                        logical_result = TRUE;      /* TRUE = Acquire timed out */

                        status = AE_OK;

                }

                break;

        case AML_WAIT_OP:               /* Wait (event_object, Timeout) */

                status = acpi_ex_system_wait_event (operand[1], operand[0]);

                if (status == AE_TIME) {

                        logical_result = TRUE;      /* TRUE, Wait timed out */

                        status = AE_OK;

                }

                break;

        default:

                ACPI_REPORT_ERROR (("acpi_ex_opcode_2A_0T_1R: Unknown opcode %X\n",

                        walk_state->opcode));

                status = AE_AML_BAD_OPCODE;

                goto cleanup;

        }

store_logical_result:

        /*

         * Set return value to according to logical_result. logical TRUE (all ones)

         * Default is FALSE (zero)

         */

        if (logical_result) {

                return_desc->integer.value = ACPI_INTEGER_MAX;

        }

        walk_state->result_obj = return_desc;

cleanup:

        /* Delete return object on error */

        if (ACPI_FAILURE (status)) {

                acpi_ut_remove_reference (return_desc);

        }

        return_ACPI_STATUS (status);

}