300 lines
9.4 KiB
C
300 lines
9.4 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Module Name: exstoren - AML Interpreter object store support,
|
|
* Store to Node (namespace object)
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2008, Intel Corp.
|
|
* 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 "accommon.h"
|
|
#include "acinterp.h"
|
|
#include "amlcode.h"
|
|
|
|
#define _COMPONENT ACPI_EXECUTER
|
|
ACPI_MODULE_NAME("exstoren")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ex_resolve_object
|
|
*
|
|
* PARAMETERS: source_desc_ptr - Pointer to the source object
|
|
* target_type - Current type of the target
|
|
* walk_state - Current walk state
|
|
*
|
|
* RETURN: Status, resolved object in source_desc_ptr.
|
|
*
|
|
* DESCRIPTION: Resolve an object. If the object is a reference, dereference
|
|
* it and return the actual object in the source_desc_ptr.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status
|
|
acpi_ex_resolve_object(union acpi_operand_object **source_desc_ptr,
|
|
acpi_object_type target_type,
|
|
struct acpi_walk_state *walk_state)
|
|
{
|
|
union acpi_operand_object *source_desc = *source_desc_ptr;
|
|
acpi_status status = AE_OK;
|
|
|
|
ACPI_FUNCTION_TRACE(ex_resolve_object);
|
|
|
|
/* Ensure we have a Target that can be stored to */
|
|
|
|
switch (target_type) {
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
case ACPI_TYPE_LOCAL_REGION_FIELD:
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
|
|
/*
|
|
* These cases all require only Integers or values that
|
|
* can be converted to Integers (Strings or Buffers)
|
|
*/
|
|
|
|
case ACPI_TYPE_INTEGER:
|
|
case ACPI_TYPE_STRING:
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
/*
|
|
* Stores into a Field/Region or into a Integer/Buffer/String
|
|
* are all essentially the same. This case handles the
|
|
* "interchangeable" types Integer, String, and Buffer.
|
|
*/
|
|
if (source_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
|
|
|
|
/* Resolve a reference object first */
|
|
|
|
status =
|
|
acpi_ex_resolve_to_value(source_desc_ptr,
|
|
walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* For copy_object, no further validation necessary */
|
|
|
|
if (walk_state->opcode == AML_COPY_OP) {
|
|
break;
|
|
}
|
|
|
|
/* Must have a Integer, Buffer, or String */
|
|
|
|
if ((source_desc->common.type != ACPI_TYPE_INTEGER) &&
|
|
(source_desc->common.type != ACPI_TYPE_BUFFER) &&
|
|
(source_desc->common.type != ACPI_TYPE_STRING) &&
|
|
!((source_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE) &&
|
|
(source_desc->reference.class == ACPI_REFCLASS_TABLE))) {
|
|
|
|
/* Conversion successful but still not a valid type */
|
|
|
|
ACPI_ERROR((AE_INFO,
|
|
"Cannot assign type %s to %s (must be type Int/Str/Buf)",
|
|
acpi_ut_get_object_type_name(source_desc),
|
|
acpi_ut_get_type_name(target_type)));
|
|
status = AE_AML_OPERAND_TYPE;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_ALIAS:
|
|
case ACPI_TYPE_LOCAL_METHOD_ALIAS:
|
|
|
|
/*
|
|
* All aliases should have been resolved earlier, during the
|
|
* operand resolution phase.
|
|
*/
|
|
ACPI_ERROR((AE_INFO, "Store into an unresolved Alias object"));
|
|
status = AE_AML_INTERNAL;
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
default:
|
|
|
|
/*
|
|
* All other types than Alias and the various Fields come here,
|
|
* including the untyped case - ACPI_TYPE_ANY.
|
|
*/
|
|
break;
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ex_store_object_to_object
|
|
*
|
|
* PARAMETERS: source_desc - Object to store
|
|
* dest_desc - Object to receive a copy of the source
|
|
* new_desc - New object if dest_desc is obsoleted
|
|
* walk_state - Current walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: "Store" an object to another object. This may include
|
|
* converting the source type to the target type (implicit
|
|
* conversion), and a copy of the value of the source to
|
|
* the target.
|
|
*
|
|
* The Assignment of an object to another (not named) object
|
|
* is handled here.
|
|
* The Source passed in will replace the current value (if any)
|
|
* with the input value.
|
|
*
|
|
* When storing into an object the data is converted to the
|
|
* target object type then stored in the object. This means
|
|
* that the target object type (for an initialized target) will
|
|
* not be changed by a store operation.
|
|
*
|
|
* This module allows destination types of Number, String,
|
|
* Buffer, and Package.
|
|
*
|
|
* Assumes parameters are already validated. NOTE: source_desc
|
|
* resolution (from a reference object) must be performed by
|
|
* the caller if necessary.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ex_store_object_to_object(union acpi_operand_object *source_desc,
|
|
union acpi_operand_object *dest_desc,
|
|
union acpi_operand_object **new_desc,
|
|
struct acpi_walk_state *walk_state)
|
|
{
|
|
union acpi_operand_object *actual_src_desc;
|
|
acpi_status status = AE_OK;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ex_store_object_to_object, source_desc);
|
|
|
|
actual_src_desc = source_desc;
|
|
if (!dest_desc) {
|
|
/*
|
|
* There is no destination object (An uninitialized node or
|
|
* package element), so we can simply copy the source object
|
|
* creating a new destination object
|
|
*/
|
|
status =
|
|
acpi_ut_copy_iobject_to_iobject(actual_src_desc, new_desc,
|
|
walk_state);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (source_desc->common.type != dest_desc->common.type) {
|
|
/*
|
|
* The source type does not match the type of the destination.
|
|
* Perform the "implicit conversion" of the source to the current type
|
|
* of the target as per the ACPI specification.
|
|
*
|
|
* If no conversion performed, actual_src_desc = source_desc.
|
|
* Otherwise, actual_src_desc is a temporary object to hold the
|
|
* converted object.
|
|
*/
|
|
status = acpi_ex_convert_to_target_type(dest_desc->common.type,
|
|
source_desc,
|
|
&actual_src_desc,
|
|
walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (source_desc == actual_src_desc) {
|
|
/*
|
|
* No conversion was performed. Return the source_desc as the
|
|
* new object.
|
|
*/
|
|
*new_desc = source_desc;
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We now have two objects of identical types, and we can perform a
|
|
* copy of the *value* of the source object.
|
|
*/
|
|
switch (dest_desc->common.type) {
|
|
case ACPI_TYPE_INTEGER:
|
|
|
|
dest_desc->integer.value = actual_src_desc->integer.value;
|
|
|
|
/* Truncate value if we are executing from a 32-bit ACPI table */
|
|
|
|
acpi_ex_truncate_for32bit_table(dest_desc);
|
|
break;
|
|
|
|
case ACPI_TYPE_STRING:
|
|
|
|
status =
|
|
acpi_ex_store_string_to_string(actual_src_desc, dest_desc);
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
status =
|
|
acpi_ex_store_buffer_to_buffer(actual_src_desc, dest_desc);
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
|
|
status =
|
|
acpi_ut_copy_iobject_to_iobject(actual_src_desc, &dest_desc,
|
|
walk_state);
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* All other types come here.
|
|
*/
|
|
ACPI_WARNING((AE_INFO, "Store into type %s not implemented",
|
|
acpi_ut_get_object_type_name(dest_desc)));
|
|
|
|
status = AE_NOT_IMPLEMENTED;
|
|
break;
|
|
}
|
|
|
|
if (actual_src_desc != source_desc) {
|
|
|
|
/* Delete the intermediate (temporary) source object */
|
|
|
|
acpi_ut_remove_reference(actual_src_desc);
|
|
}
|
|
|
|
*new_desc = dest_desc;
|
|
return_ACPI_STATUS(status);
|
|
}
|