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/******************************************************************************
*
* Module Name: exoparg2 - AML execution - opcodes with 2 arguments
* $Revision: 97 $
*
*****************************************************************************/
/*
* Copyright (C) 2000, 2001 R. Byron Moore
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "acpi.h"
#include "acparser.h"
#include "acnamesp.h"
#include "acinterp.h"
#include "acevents.h"
#include "amlcode.h"
#include "acdispat.h"
#define _COMPONENT ACPI_EXECUTER
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 (
acpi_walk_state *walk_state)
{
acpi_operand_object **operand = &walk_state->operands[0];
acpi_namespace_node *node;
acpi_status status = AE_OK;
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 = (acpi_namespace_node *) operand[0];
/* The node must refer to a device or thermal zone */
if (node && operand[1]) /* TBD: is this check necessary? */ {
switch (node->type) {
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_THERMAL:
/*
* 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_DEBUG_PRINT ((ACPI_DB_ERROR, "Unexpected notify object type %X\n",
node->type));
status = AE_AML_OPERAND_TYPE;
break;
}
}
break;
default:
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 (
acpi_walk_state *walk_state)
{
acpi_operand_object **operand = &walk_state->operands[0];
acpi_operand_object *return_desc1 = NULL;
acpi_operand_object *return_desc2 = NULL;
acpi_status status;
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:
REPORT_ERROR (("Acpi_ex_opcode_2A_2T_1R: Unknown opcode %X\n",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
break;
}
/* 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 (
acpi_walk_state *walk_state)
{
acpi_operand_object **operand = &walk_state->operands[0];
acpi_operand_object *return_desc = NULL;
acpi_operand_object *temp_desc;
u32 index;
acpi_status status = AE_OK;
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 (operand[0]->common.type) {
case ACPI_TYPE_INTEGER:
status = acpi_ex_convert_to_integer (operand[1], &operand[1], walk_state);
break;
case ACPI_TYPE_STRING:
status = acpi_ex_convert_to_string (operand[1], &operand[1], 16, ACPI_UINT32_MAX, walk_state);
break;
case ACPI_TYPE_BUFFER:
status = acpi_ex_convert_to_buffer (operand[1], &operand[1], walk_state);
break;
default:
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], operand[1], &return_desc, walk_state);
break;
case AML_TO_STRING_OP: /* To_string (Buffer, Length, Result) (ACPI 2.0) */
status = acpi_ex_convert_to_string (operand[0], &return_desc, 16,
(u32) operand[1]->integer.value, walk_state);
break;
case AML_CONCAT_RES_OP: /* Concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */
status = AE_NOT_IMPLEMENTED;
break;
case AML_INDEX_OP: /* Index (Source Index Result) */
/* Create the internal return object */
return_desc = acpi_ut_create_internal_object (INTERNAL_TYPE_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 (operand[0]->common.type == ACPI_TYPE_PACKAGE) {
/* Object to be indexed is a Package */
if (index >= operand[0]->package.count) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Index value beyond package end\n"));
status = AE_AML_PACKAGE_LIMIT;
goto cleanup;
}
if ((operand[2]->common.type == INTERNAL_TYPE_REFERENCE) &&
(operand[2]->reference.opcode == AML_ZERO_OP)) {
/*
* There is no actual result descriptor (the Zero_op Result
* descriptor is a placeholder), so just delete the placeholder and
* return a reference to the package element
*/
acpi_ut_remove_reference (operand[2]);
}
else {
/*
* Each element of the package is an internal object. Get the one
* we are after.
*/
temp_desc = operand[0]->package.elements [index];
return_desc->reference.opcode = AML_INDEX_OP;
return_desc->reference.target_type = temp_desc->common.type;
return_desc->reference.object = temp_desc;
status = acpi_ex_store (return_desc, operand[2], walk_state);
return_desc->reference.object = NULL;
}
/*
* The local return object must always be a reference to the package element,
* not the element itself.
*/
return_desc->reference.opcode = AML_INDEX_OP;
return_desc->reference.target_type = ACPI_TYPE_PACKAGE;
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 beyond end of buffer\n"));
status = AE_AML_BUFFER_LIMIT;
goto cleanup;
}
return_desc->reference.opcode = AML_INDEX_OP;
return_desc->reference.target_type = ACPI_TYPE_BUFFER_FIELD;
return_desc->reference.object = operand[0];
return_desc->reference.offset = index;
status = acpi_ex_store (return_desc, operand[2], walk_state);
}
walk_state->result_obj = return_desc;
goto cleanup;
break;
default:
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;
}
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 (
acpi_walk_state *walk_state)
{
acpi_operand_object **operand = &walk_state->operands[0];
acpi_operand_object *return_desc = NULL;
acpi_status status = AE_OK;
u8 logical_result = FALSE;
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:
REPORT_ERROR (("Acpi_ex_opcode_2A_0T_1R: Unknown opcode %X\n", walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
break;
}
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);
}
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