LCOV - code coverage report
Current view: top level - drivers/acpi/acpica - exstore.c (source / functions) Hit Total Coverage
Test: combined.info Lines: 62 135 45.9 %
Date: 2022-04-01 14:35:51 Functions: 3 4 75.0 %
Branches: 21 56 37.5 %

           Branch data     Line data    Source code
       1                 :            : // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
       2                 :            : /******************************************************************************
       3                 :            :  *
       4                 :            :  * Module Name: exstore - AML Interpreter object store support
       5                 :            :  *
       6                 :            :  * Copyright (C) 2000 - 2020, Intel Corp.
       7                 :            :  *
       8                 :            :  *****************************************************************************/
       9                 :            : 
      10                 :            : #include <acpi/acpi.h>
      11                 :            : #include "accommon.h"
      12                 :            : #include "acdispat.h"
      13                 :            : #include "acinterp.h"
      14                 :            : #include "amlcode.h"
      15                 :            : #include "acnamesp.h"
      16                 :            : 
      17                 :            : #define _COMPONENT          ACPI_EXECUTER
      18                 :            : ACPI_MODULE_NAME("exstore")
      19                 :            : 
      20                 :            : /* Local prototypes */
      21                 :            : static acpi_status
      22                 :            : acpi_ex_store_object_to_index(union acpi_operand_object *val_desc,
      23                 :            :                               union acpi_operand_object *dest_desc,
      24                 :            :                               struct acpi_walk_state *walk_state);
      25                 :            : 
      26                 :            : static acpi_status
      27                 :            : acpi_ex_store_direct_to_node(union acpi_operand_object *source_desc,
      28                 :            :                              struct acpi_namespace_node *node,
      29                 :            :                              struct acpi_walk_state *walk_state);
      30                 :            : 
      31                 :            : /*******************************************************************************
      32                 :            :  *
      33                 :            :  * FUNCTION:    acpi_ex_store
      34                 :            :  *
      35                 :            :  * PARAMETERS:  *source_desc        - Value to be stored
      36                 :            :  *              *dest_desc          - Where to store it. Must be an NS node
      37                 :            :  *                                    or union acpi_operand_object of type
      38                 :            :  *                                    Reference;
      39                 :            :  *              walk_state          - Current walk state
      40                 :            :  *
      41                 :            :  * RETURN:      Status
      42                 :            :  *
      43                 :            :  * DESCRIPTION: Store the value described by source_desc into the location
      44                 :            :  *              described by dest_desc. Called by various interpreter
      45                 :            :  *              functions to store the result of an operation into
      46                 :            :  *              the destination operand -- not just simply the actual "Store"
      47                 :            :  *              ASL operator.
      48                 :            :  *
      49                 :            :  ******************************************************************************/
      50                 :            : 
      51                 :            : acpi_status
      52                 :      44352 : acpi_ex_store(union acpi_operand_object *source_desc,
      53                 :            :               union acpi_operand_object *dest_desc,
      54                 :            :               struct acpi_walk_state *walk_state)
      55                 :            : {
      56                 :      44352 :         acpi_status status = AE_OK;
      57                 :      44352 :         union acpi_operand_object *ref_desc = dest_desc;
      58                 :            : 
      59                 :      44352 :         ACPI_FUNCTION_TRACE_PTR(ex_store, dest_desc);
      60                 :            : 
      61                 :            :         /* Validate parameters */
      62                 :            : 
      63         [ -  + ]:      44352 :         if (!source_desc || !dest_desc) {
      64                 :          0 :                 ACPI_ERROR((AE_INFO, "Null parameter"));
      65                 :          0 :                 return_ACPI_STATUS(AE_AML_NO_OPERAND);
      66                 :            :         }
      67                 :            : 
      68                 :            :         /* dest_desc can be either a namespace node or an ACPI object */
      69                 :            : 
      70         [ +  + ]:      44352 :         if (ACPI_GET_DESCRIPTOR_TYPE(dest_desc) == ACPI_DESC_TYPE_NAMED) {
      71                 :            :                 /*
      72                 :            :                  * Dest is a namespace node,
      73                 :            :                  * Storing an object into a Named node.
      74                 :            :                  */
      75                 :        357 :                 status = acpi_ex_store_object_to_node(source_desc,
      76                 :            :                                                       (struct
      77                 :            :                                                        acpi_namespace_node *)
      78                 :            :                                                       dest_desc, walk_state,
      79                 :            :                                                       ACPI_IMPLICIT_CONVERSION);
      80                 :            : 
      81                 :        357 :                 return_ACPI_STATUS(status);
      82                 :            :         }
      83                 :            : 
      84                 :            :         /* Destination object must be a Reference or a Constant object */
      85                 :            : 
      86      [ +  -  + ]:      43995 :         switch (dest_desc->common.type) {
      87                 :            :         case ACPI_TYPE_LOCAL_REFERENCE:
      88                 :            : 
      89                 :      19446 :                 break;
      90                 :            : 
      91                 :      24549 :         case ACPI_TYPE_INTEGER:
      92                 :            : 
      93                 :            :                 /* Allow stores to Constants -- a Noop as per ACPI spec */
      94                 :            : 
      95         [ -  + ]:      24549 :                 if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) {
      96                 :            :                         return_ACPI_STATUS(AE_OK);
      97                 :            :                 }
      98                 :            : 
      99                 :            :                 /*lint -fallthrough */
     100                 :            : 
     101                 :            :         default:
     102                 :            : 
     103                 :            :                 /* Destination is not a Reference object */
     104                 :            : 
     105                 :          0 :                 ACPI_ERROR((AE_INFO,
     106                 :            :                             "Target is not a Reference or Constant object - [%s] %p",
     107                 :            :                             acpi_ut_get_object_type_name(dest_desc),
     108                 :            :                             dest_desc));
     109                 :            : 
     110                 :          0 :                 return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
     111                 :            :         }
     112                 :            : 
     113                 :            :         /*
     114                 :            :          * Examine the Reference class. These cases are handled:
     115                 :            :          *
     116                 :            :          * 1) Store to Name (Change the object associated with a name)
     117                 :            :          * 2) Store to an indexed area of a Buffer or Package
     118                 :            :          * 3) Store to a Method Local or Arg
     119                 :            :          * 4) Store to the debug object
     120                 :            :          */
     121   [ -  +  +  -  :      19446 :         switch (ref_desc->reference.class) {
                      - ]
     122                 :          0 :         case ACPI_REFCLASS_REFOF:
     123                 :            : 
     124                 :            :                 /* Storing an object into a Name "container" */
     125                 :            : 
     126                 :          0 :                 status = acpi_ex_store_object_to_node(source_desc,
     127                 :          0 :                                                       ref_desc->reference.
     128                 :            :                                                       object, walk_state,
     129                 :            :                                                       ACPI_IMPLICIT_CONVERSION);
     130                 :          0 :                 break;
     131                 :            : 
     132                 :       8064 :         case ACPI_REFCLASS_INDEX:
     133                 :            : 
     134                 :            :                 /* Storing to an Index (pointer into a packager or buffer) */
     135                 :            : 
     136                 :       8064 :                 status =
     137                 :       8064 :                     acpi_ex_store_object_to_index(source_desc, ref_desc,
     138                 :            :                                                   walk_state);
     139                 :       8064 :                 break;
     140                 :            : 
     141                 :      11382 :         case ACPI_REFCLASS_LOCAL:
     142                 :            :         case ACPI_REFCLASS_ARG:
     143                 :            : 
     144                 :            :                 /* Store to a method local/arg  */
     145                 :            : 
     146                 :      11382 :                 status =
     147                 :      11382 :                     acpi_ds_store_object_to_local(ref_desc->reference.class,
     148                 :            :                                                   ref_desc->reference.value,
     149                 :            :                                                   source_desc, walk_state);
     150                 :      11382 :                 break;
     151                 :            : 
     152                 :          0 :         case ACPI_REFCLASS_DEBUG:
     153                 :            :                 /*
     154                 :            :                  * Storing to the Debug object causes the value stored to be
     155                 :            :                  * displayed and otherwise has no effect -- see ACPI Specification
     156                 :            :                  */
     157                 :            :                 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
     158                 :            :                                   "**** Write to Debug Object: Object %p [%s] ****:\n\n",
     159                 :            :                                   source_desc,
     160                 :          0 :                                   acpi_ut_get_object_type_name(source_desc)));
     161                 :            : 
     162                 :          0 :                 ACPI_DEBUG_OBJECT(source_desc, 0, 0);
     163                 :          0 :                 break;
     164                 :            : 
     165                 :          0 :         default:
     166                 :            : 
     167                 :          0 :                 ACPI_ERROR((AE_INFO, "Unknown Reference Class 0x%2.2X",
     168                 :            :                             ref_desc->reference.class));
     169                 :          0 :                 ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_INFO);
     170                 :            : 
     171                 :          0 :                 status = AE_AML_INTERNAL;
     172                 :          0 :                 break;
     173                 :            :         }
     174                 :            : 
     175                 :            :         return_ACPI_STATUS(status);
     176                 :            : }
     177                 :            : 
     178                 :            : /*******************************************************************************
     179                 :            :  *
     180                 :            :  * FUNCTION:    acpi_ex_store_object_to_index
     181                 :            :  *
     182                 :            :  * PARAMETERS:  *source_desc            - Value to be stored
     183                 :            :  *              *dest_desc              - Named object to receive the value
     184                 :            :  *              walk_state              - Current walk state
     185                 :            :  *
     186                 :            :  * RETURN:      Status
     187                 :            :  *
     188                 :            :  * DESCRIPTION: Store the object to indexed Buffer or Package element
     189                 :            :  *
     190                 :            :  ******************************************************************************/
     191                 :            : 
     192                 :            : static acpi_status
     193                 :       8064 : acpi_ex_store_object_to_index(union acpi_operand_object *source_desc,
     194                 :            :                               union acpi_operand_object *index_desc,
     195                 :            :                               struct acpi_walk_state *walk_state)
     196                 :            : {
     197                 :       8064 :         acpi_status status = AE_OK;
     198                 :       8064 :         union acpi_operand_object *obj_desc;
     199                 :       8064 :         union acpi_operand_object *new_desc;
     200                 :       8064 :         u8 value = 0;
     201                 :       8064 :         u32 i;
     202                 :            : 
     203                 :       8064 :         ACPI_FUNCTION_TRACE(ex_store_object_to_index);
     204                 :            : 
     205                 :            :         /*
     206                 :            :          * Destination must be a reference pointer, and
     207                 :            :          * must point to either a buffer or a package
     208                 :            :          */
     209      [ +  -  - ]:       8064 :         switch (index_desc->reference.target_type) {
     210                 :       8064 :         case ACPI_TYPE_PACKAGE:
     211                 :            :                 /*
     212                 :            :                  * Storing to a package element. Copy the object and replace
     213                 :            :                  * any existing object with the new object. No implicit
     214                 :            :                  * conversion is performed.
     215                 :            :                  *
     216                 :            :                  * The object at *(index_desc->Reference.Where) is the
     217                 :            :                  * element within the package that is to be modified.
     218                 :            :                  * The parent package object is at index_desc->Reference.Object
     219                 :            :                  */
     220                 :       8064 :                 obj_desc = *(index_desc->reference.where);
     221                 :            : 
     222         [ -  + ]:       8064 :                 if (source_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE &&
     223                 :            :                     source_desc->reference.class == ACPI_REFCLASS_TABLE) {
     224                 :            : 
     225                 :            :                         /* This is a DDBHandle, just add a reference to it */
     226                 :            : 
     227                 :          0 :                         acpi_ut_add_reference(source_desc);
     228                 :          0 :                         new_desc = source_desc;
     229                 :            :                 } else {
     230                 :            :                         /* Normal object, copy it */
     231                 :            : 
     232                 :       8064 :                         status =
     233                 :       8064 :                             acpi_ut_copy_iobject_to_iobject(source_desc,
     234                 :            :                                                             &new_desc,
     235                 :            :                                                             walk_state);
     236         [ +  - ]:       8064 :                         if (ACPI_FAILURE(status)) {
     237                 :            :                                 return_ACPI_STATUS(status);
     238                 :            :                         }
     239                 :            :                 }
     240                 :            : 
     241         [ +  + ]:       8064 :                 if (obj_desc) {
     242                 :            : 
     243                 :            :                         /* Decrement reference count by the ref count of the parent package */
     244                 :            : 
     245                 :      21504 :                         for (i = 0; i < ((union acpi_operand_object *)
     246         [ +  + ]:      21504 :                                          index_desc->reference.object)->common.
     247                 :      16128 :                              reference_count; i++) {
     248                 :      16128 :                                 acpi_ut_remove_reference(obj_desc);
     249                 :            :                         }
     250                 :            :                 }
     251                 :            : 
     252                 :       8064 :                 *(index_desc->reference.where) = new_desc;
     253                 :            : 
     254                 :            :                 /* Increment ref count by the ref count of the parent package-1 */
     255                 :            : 
     256                 :       8064 :                 for (i = 1; i < ((union acpi_operand_object *)
     257         [ +  + ]:      24192 :                                  index_desc->reference.object)->common.
     258                 :      16128 :                      reference_count; i++) {
     259                 :      16128 :                         acpi_ut_add_reference(new_desc);
     260                 :            :                 }
     261                 :            : 
     262                 :            :                 break;
     263                 :            : 
     264                 :          0 :         case ACPI_TYPE_BUFFER_FIELD:
     265                 :            :                 /*
     266                 :            :                  * Store into a Buffer or String (not actually a real buffer_field)
     267                 :            :                  * at a location defined by an Index.
     268                 :            :                  *
     269                 :            :                  * The first 8-bit element of the source object is written to the
     270                 :            :                  * 8-bit Buffer location defined by the Index destination object,
     271                 :            :                  * according to the ACPI 2.0 specification.
     272                 :            :                  */
     273                 :            : 
     274                 :            :                 /*
     275                 :            :                  * Make sure the target is a Buffer or String. An error should
     276                 :            :                  * not happen here, since the reference_object was constructed
     277                 :            :                  * by the INDEX_OP code.
     278                 :            :                  */
     279                 :          0 :                 obj_desc = index_desc->reference.object;
     280         [ #  # ]:          0 :                 if ((obj_desc->common.type != ACPI_TYPE_BUFFER) &&
     281                 :            :                     (obj_desc->common.type != ACPI_TYPE_STRING)) {
     282                 :            :                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
     283                 :            :                 }
     284                 :            : 
     285                 :            :                 /*
     286                 :            :                  * The assignment of the individual elements will be slightly
     287                 :            :                  * different for each source type.
     288                 :            :                  */
     289      [ #  #  # ]:          0 :                 switch (source_desc->common.type) {
     290                 :          0 :                 case ACPI_TYPE_INTEGER:
     291                 :            : 
     292                 :            :                         /* Use the least-significant byte of the integer */
     293                 :            : 
     294                 :          0 :                         value = (u8) (source_desc->integer.value);
     295                 :          0 :                         break;
     296                 :            : 
     297                 :          0 :                 case ACPI_TYPE_BUFFER:
     298                 :            :                 case ACPI_TYPE_STRING:
     299                 :            : 
     300                 :            :                         /* Note: Takes advantage of common string/buffer fields */
     301                 :            : 
     302                 :          0 :                         value = source_desc->buffer.pointer[0];
     303                 :          0 :                         break;
     304                 :            : 
     305                 :          0 :                 default:
     306                 :            : 
     307                 :            :                         /* All other types are invalid */
     308                 :            : 
     309                 :          0 :                         ACPI_ERROR((AE_INFO,
     310                 :            :                                     "Source must be type [Integer/Buffer/String], found [%s]",
     311                 :            :                                     acpi_ut_get_object_type_name(source_desc)));
     312                 :          0 :                         return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
     313                 :            :                 }
     314                 :            : 
     315                 :            :                 /* Store the source value into the target buffer byte */
     316                 :            : 
     317                 :          0 :                 obj_desc->buffer.pointer[index_desc->reference.value] = value;
     318                 :          0 :                 break;
     319                 :            : 
     320                 :          0 :         default:
     321                 :          0 :                 ACPI_ERROR((AE_INFO,
     322                 :            :                             "Target is not of type [Package/BufferField]"));
     323                 :          0 :                 status = AE_AML_TARGET_TYPE;
     324                 :          0 :                 break;
     325                 :            :         }
     326                 :            : 
     327                 :            :         return_ACPI_STATUS(status);
     328                 :            : }
     329                 :            : 
     330                 :            : /*******************************************************************************
     331                 :            :  *
     332                 :            :  * FUNCTION:    acpi_ex_store_object_to_node
     333                 :            :  *
     334                 :            :  * PARAMETERS:  source_desc             - Value to be stored
     335                 :            :  *              node                    - Named object to receive the value
     336                 :            :  *              walk_state              - Current walk state
     337                 :            :  *              implicit_conversion     - Perform implicit conversion (yes/no)
     338                 :            :  *
     339                 :            :  * RETURN:      Status
     340                 :            :  *
     341                 :            :  * DESCRIPTION: Store the object to the named object.
     342                 :            :  *
     343                 :            :  * The assignment of an object to a named object is handled here.
     344                 :            :  * The value passed in will replace the current value (if any)
     345                 :            :  * with the input value.
     346                 :            :  *
     347                 :            :  * When storing into an object the data is converted to the
     348                 :            :  * target object type then stored in the object. This means
     349                 :            :  * that the target object type (for an initialized target) will
     350                 :            :  * not be changed by a store operation. A copy_object can change
     351                 :            :  * the target type, however.
     352                 :            :  *
     353                 :            :  * The implicit_conversion flag is set to NO/FALSE only when
     354                 :            :  * storing to an arg_x -- as per the rules of the ACPI spec.
     355                 :            :  *
     356                 :            :  * Assumes parameters are already validated.
     357                 :            :  *
     358                 :            :  ******************************************************************************/
     359                 :            : 
     360                 :            : acpi_status
     361                 :        357 : acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
     362                 :            :                              struct acpi_namespace_node *node,
     363                 :            :                              struct acpi_walk_state *walk_state,
     364                 :            :                              u8 implicit_conversion)
     365                 :            : {
     366                 :        357 :         acpi_status status = AE_OK;
     367                 :        357 :         union acpi_operand_object *target_desc;
     368                 :        357 :         union acpi_operand_object *new_desc;
     369                 :        357 :         acpi_object_type target_type;
     370                 :            : 
     371                 :        357 :         ACPI_FUNCTION_TRACE_PTR(ex_store_object_to_node, source_desc);
     372                 :            : 
     373                 :            :         /* Get current type of the node, and object attached to Node */
     374                 :            : 
     375                 :        357 :         target_type = acpi_ns_get_type(node);
     376                 :        357 :         target_desc = acpi_ns_get_attached_object(node);
     377                 :            : 
     378                 :            :         ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Storing %p [%s] to node %p [%s]\n",
     379                 :            :                           source_desc,
     380                 :            :                           acpi_ut_get_object_type_name(source_desc), node,
     381                 :        357 :                           acpi_ut_get_type_name(target_type)));
     382                 :            : 
     383                 :            :         /* Only limited target types possible for everything except copy_object */
     384                 :            : 
     385         [ +  - ]:        357 :         if (walk_state->opcode != AML_COPY_OBJECT_OP) {
     386                 :            :                 /*
     387                 :            :                  * Only copy_object allows all object types to be overwritten. For
     388                 :            :                  * target_ref(s), there are restrictions on the object types that
     389                 :            :                  * are allowed.
     390                 :            :                  *
     391                 :            :                  * Allowable operations/typing for Store:
     392                 :            :                  *
     393                 :            :                  * 1) Simple Store
     394                 :            :                  *      Integer     --> Integer (Named/Local/Arg)
     395                 :            :                  *      String      --> String  (Named/Local/Arg)
     396                 :            :                  *      Buffer      --> Buffer  (Named/Local/Arg)
     397                 :            :                  *      Package     --> Package (Named/Local/Arg)
     398                 :            :                  *
     399                 :            :                  * 2) Store with implicit conversion
     400                 :            :                  *      Integer     --> String or Buffer  (Named)
     401                 :            :                  *      String      --> Integer or Buffer (Named)
     402                 :            :                  *      Buffer      --> Integer or String (Named)
     403                 :            :                  */
     404      [ -  -  + ]:        357 :                 switch (target_type) {
     405                 :          0 :                 case ACPI_TYPE_PACKAGE:
     406                 :            :                         /*
     407                 :            :                          * Here, can only store a package to an existing package.
     408                 :            :                          * Storing a package to a Local/Arg is OK, and handled
     409                 :            :                          * elsewhere.
     410                 :            :                          */
     411         [ #  # ]:          0 :                         if (walk_state->opcode == AML_STORE_OP) {
     412         [ #  # ]:          0 :                                 if (source_desc->common.type !=
     413                 :            :                                     ACPI_TYPE_PACKAGE) {
     414                 :          0 :                                         ACPI_ERROR((AE_INFO,
     415                 :            :                                                     "Cannot assign type [%s] to [Package] "
     416                 :            :                                                     "(source must be type Pkg)",
     417                 :            :                                                     acpi_ut_get_object_type_name
     418                 :            :                                                     (source_desc)));
     419                 :            : 
     420                 :          0 :                                         return_ACPI_STATUS(AE_AML_TARGET_TYPE);
     421                 :            :                                 }
     422                 :            :                                 break;
     423                 :            :                         }
     424                 :            : 
     425                 :            :                         /* Fallthrough */
     426                 :            : 
     427                 :            :                 case ACPI_TYPE_DEVICE:
     428                 :            :                 case ACPI_TYPE_EVENT:
     429                 :            :                 case ACPI_TYPE_MUTEX:
     430                 :            :                 case ACPI_TYPE_REGION:
     431                 :            :                 case ACPI_TYPE_POWER:
     432                 :            :                 case ACPI_TYPE_PROCESSOR:
     433                 :            :                 case ACPI_TYPE_THERMAL:
     434                 :            : 
     435                 :          0 :                         ACPI_ERROR((AE_INFO,
     436                 :            :                                     "Target must be [Buffer/Integer/String/Reference]"
     437                 :            :                                     ", found [%s] (%4.4s)",
     438                 :            :                                     acpi_ut_get_type_name(node->type),
     439                 :            :                                     node->name.ascii));
     440                 :            : 
     441                 :          0 :                         return_ACPI_STATUS(AE_AML_TARGET_TYPE);
     442                 :            : 
     443                 :            :                 default:
     444                 :            :                         break;
     445                 :            :                 }
     446                 :          0 :         }
     447                 :            : 
     448                 :            :         /*
     449                 :            :          * Resolve the source object to an actual value
     450                 :            :          * (If it is a reference object)
     451                 :            :          */
     452                 :        357 :         status = acpi_ex_resolve_object(&source_desc, target_type, walk_state);
     453         [ +  - ]:        357 :         if (ACPI_FAILURE(status)) {
     454                 :            :                 return_ACPI_STATUS(status);
     455                 :            :         }
     456                 :            : 
     457                 :            :         /* Do the actual store operation */
     458                 :            : 
     459      [ -  +  - ]:        357 :         switch (target_type) {
     460                 :            :                 /*
     461                 :            :                  * The simple data types all support implicit source operand
     462                 :            :                  * conversion before the store.
     463                 :            :                  */
     464                 :          0 :         case ACPI_TYPE_INTEGER:
     465                 :            :         case ACPI_TYPE_STRING:
     466                 :            :         case ACPI_TYPE_BUFFER:
     467                 :            : 
     468   [ #  #  #  # ]:          0 :                 if ((walk_state->opcode == AML_COPY_OBJECT_OP) ||
     469                 :            :                     !implicit_conversion) {
     470                 :            :                         /*
     471                 :            :                          * However, copy_object and Stores to arg_x do not perform
     472                 :            :                          * an implicit conversion, as per the ACPI specification.
     473                 :            :                          * A direct store is performed instead.
     474                 :            :                          */
     475                 :          0 :                         status =
     476                 :          0 :                             acpi_ex_store_direct_to_node(source_desc, node,
     477                 :            :                                                          walk_state);
     478                 :          0 :                         break;
     479                 :            :                 }
     480                 :            : 
     481                 :            :                 /* Store with implicit source operand conversion support */
     482                 :            : 
     483                 :          0 :                 status =
     484                 :          0 :                     acpi_ex_store_object_to_object(source_desc, target_desc,
     485                 :            :                                                    &new_desc, walk_state);
     486         [ #  # ]:          0 :                 if (ACPI_FAILURE(status)) {
     487                 :            :                         return_ACPI_STATUS(status);
     488                 :            :                 }
     489                 :            : 
     490         [ #  # ]:          0 :                 if (new_desc != target_desc) {
     491                 :            :                         /*
     492                 :            :                          * Store the new new_desc as the new value of the Name, and set
     493                 :            :                          * the Name's type to that of the value being stored in it.
     494                 :            :                          * source_desc reference count is incremented by attach_object.
     495                 :            :                          *
     496                 :            :                          * Note: This may change the type of the node if an explicit
     497                 :            :                          * store has been performed such that the node/object type
     498                 :            :                          * has been changed.
     499                 :            :                          */
     500                 :          0 :                         status =
     501                 :          0 :                             acpi_ns_attach_object(node, new_desc,
     502                 :          0 :                                                   new_desc->common.type);
     503                 :            : 
     504                 :            :                         ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
     505                 :            :                                           "Store type [%s] into [%s] via Convert/Attach\n",
     506                 :            :                                           acpi_ut_get_object_type_name
     507                 :            :                                           (source_desc),
     508                 :            :                                           acpi_ut_get_object_type_name
     509                 :            :                                           (new_desc)));
     510                 :            :                 }
     511                 :            :                 break;
     512                 :            : 
     513                 :        357 :         case ACPI_TYPE_BUFFER_FIELD:
     514                 :            :         case ACPI_TYPE_LOCAL_REGION_FIELD:
     515                 :            :         case ACPI_TYPE_LOCAL_BANK_FIELD:
     516                 :            :         case ACPI_TYPE_LOCAL_INDEX_FIELD:
     517                 :            :                 /*
     518                 :            :                  * For all fields, always write the source data to the target
     519                 :            :                  * field. Any required implicit source operand conversion is
     520                 :            :                  * performed in the function below as necessary. Note, field
     521                 :            :                  * objects must retain their original type permanently.
     522                 :            :                  */
     523                 :        357 :                 status = acpi_ex_write_data_to_field(source_desc, target_desc,
     524                 :            :                                                      &walk_state->result_obj);
     525                 :        357 :                 break;
     526                 :            : 
     527                 :          0 :         default:
     528                 :            :                 /*
     529                 :            :                  * copy_object operator: No conversions for all other types.
     530                 :            :                  * Instead, directly store a copy of the source object.
     531                 :            :                  *
     532                 :            :                  * This is the ACPI spec-defined behavior for the copy_object
     533                 :            :                  * operator. (Note, for this default case, all normal
     534                 :            :                  * Store/Target operations exited above with an error).
     535                 :            :                  */
     536                 :          0 :                 status =
     537                 :          0 :                     acpi_ex_store_direct_to_node(source_desc, node, walk_state);
     538                 :          0 :                 break;
     539                 :            :         }
     540                 :            : 
     541                 :            :         return_ACPI_STATUS(status);
     542                 :            : }
     543                 :            : 
     544                 :            : /*******************************************************************************
     545                 :            :  *
     546                 :            :  * FUNCTION:    acpi_ex_store_direct_to_node
     547                 :            :  *
     548                 :            :  * PARAMETERS:  source_desc             - Value to be stored
     549                 :            :  *              node                    - Named object to receive the value
     550                 :            :  *              walk_state              - Current walk state
     551                 :            :  *
     552                 :            :  * RETURN:      Status
     553                 :            :  *
     554                 :            :  * DESCRIPTION: "Store" an object directly to a node. This involves a copy
     555                 :            :  *              and an attach.
     556                 :            :  *
     557                 :            :  ******************************************************************************/
     558                 :            : 
     559                 :            : static acpi_status
     560                 :          0 : acpi_ex_store_direct_to_node(union acpi_operand_object *source_desc,
     561                 :            :                              struct acpi_namespace_node *node,
     562                 :            :                              struct acpi_walk_state *walk_state)
     563                 :            : {
     564                 :          0 :         acpi_status status;
     565                 :          0 :         union acpi_operand_object *new_desc;
     566                 :            : 
     567                 :          0 :         ACPI_FUNCTION_TRACE(ex_store_direct_to_node);
     568                 :            : 
     569                 :            :         ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
     570                 :            :                           "Storing [%s] (%p) directly into node [%s] (%p)"
     571                 :            :                           " with no implicit conversion\n",
     572                 :            :                           acpi_ut_get_object_type_name(source_desc),
     573                 :            :                           source_desc, acpi_ut_get_type_name(node->type),
     574                 :          0 :                           node));
     575                 :            : 
     576                 :            :         /* Copy the source object to a new object */
     577                 :            : 
     578                 :          0 :         status =
     579                 :          0 :             acpi_ut_copy_iobject_to_iobject(source_desc, &new_desc, walk_state);
     580         [ #  # ]:          0 :         if (ACPI_FAILURE(status)) {
     581                 :            :                 return_ACPI_STATUS(status);
     582                 :            :         }
     583                 :            : 
     584                 :            :         /* Attach the new object to the node */
     585                 :            : 
     586                 :          0 :         status = acpi_ns_attach_object(node, new_desc, new_desc->common.type);
     587                 :          0 :         acpi_ut_remove_reference(new_desc);
     588                 :          0 :         return_ACPI_STATUS(status);
     589                 :            : }

Generated by: LCOV version 1.14