| 0,0 → 1,844 |
|---|
| /******************************************************************************* |
| * |
| * Module Name: dsmthdat - control method arguments and local variables |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 2. License |
| * |
| * 2.1. This is your license from Intel Corp. under its intellectual property |
| * rights. You may have additional license terms from the party that provided |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * offer to sell, and import the Covered Code and derivative works thereof |
| * solely to the minimum extent necessary to exercise the above copyright |
| * license, and in no event shall the patent license extend to any additions |
| * to or modifications of the Original Intel Code. No other license or right |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification with rights to further distribute source must include |
| * the above Copyright Notice, the above License, this list of Conditions, |
| * and the following Disclaimer and Export Compliance provision. In addition, |
| * Licensee must cause all Covered Code to which Licensee contributes to |
| * contain a file documenting the changes Licensee made to create that Covered |
| * Code and the date of any change. Licensee must include in that file the |
| * documentation of any changes made by any predecessor Licensee. Licensee |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification without rights to further distribute source must |
| * include the following Disclaimer and Export Compliance provision in the |
| * documentation and/or other materials provided with distribution. In |
| * addition, Licensee may not authorize further sublicense of source of any |
| * portion of the Covered Code, and must include terms to the effect that the |
| * license from Licensee to its licensee is limited to the intellectual |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
| * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
| * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
| * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
| * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
| * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
| * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
| * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
| * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
| * LIMITED REMEDY. |
| * |
| * 4.3. Licensee shall not export, either directly or indirectly, any of this |
| * software or system incorporating such software without first obtaining any |
| * required license or other approval from the U. S. Department of Commerce or |
| * any other agency or department of the United States Government. In the |
| * event Licensee exports any such software from the United States or |
| * re-exports any such software from a foreign destination, Licensee shall |
| * ensure that the distribution and export/re-export of the software is in |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| #define __DSMTHDAT_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acdispat.h" |
| #include "acnamesp.h" |
| #include "acinterp.h" |
| |
| |
| #define _COMPONENT ACPI_DISPATCHER |
| ACPI_MODULE_NAME ("dsmthdat") |
| |
| /* Local prototypes */ |
| |
| static void |
| AcpiDsMethodDataDeleteValue ( |
| UINT8 Type, |
| UINT32 Index, |
| ACPI_WALK_STATE *WalkState); |
| |
| static ACPI_STATUS |
| AcpiDsMethodDataSetValue ( |
| UINT8 Type, |
| UINT32 Index, |
| ACPI_OPERAND_OBJECT *Object, |
| ACPI_WALK_STATE *WalkState); |
| |
| #ifdef ACPI_OBSOLETE_FUNCTIONS |
| ACPI_OBJECT_TYPE |
| AcpiDsMethodDataGetType ( |
| UINT16 Opcode, |
| UINT32 Index, |
| ACPI_WALK_STATE *WalkState); |
| #endif |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsMethodDataInit |
| * |
| * PARAMETERS: WalkState - Current walk state object |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Initialize the data structures that hold the method's arguments |
| * and locals. The data struct is an array of namespace nodes for |
| * each - this allows RefOf and DeRefOf to work properly for these |
| * special data types. |
| * |
| * NOTES: WalkState fields are initialized to zero by the |
| * ACPI_ALLOCATE_ZEROED(). |
| * |
| * A pseudo-Namespace Node is assigned to each argument and local |
| * so that RefOf() can return a pointer to the Node. |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiDsMethodDataInit ( |
| ACPI_WALK_STATE *WalkState) |
| { |
| UINT32 i; |
| |
| |
| ACPI_FUNCTION_TRACE (DsMethodDataInit); |
| |
| |
| /* Init the method arguments */ |
| |
| for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) |
| { |
| ACPI_MOVE_32_TO_32 (&WalkState->Arguments[i].Name, NAMEOF_ARG_NTE); |
| WalkState->Arguments[i].Name.Integer |= (i << 24); |
| WalkState->Arguments[i].DescriptorType = ACPI_DESC_TYPE_NAMED; |
| WalkState->Arguments[i].Type = ACPI_TYPE_ANY; |
| WalkState->Arguments[i].Flags = ANOBJ_METHOD_ARG; |
| } |
| |
| /* Init the method locals */ |
| |
| for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) |
| { |
| ACPI_MOVE_32_TO_32 (&WalkState->LocalVariables[i].Name, NAMEOF_LOCAL_NTE); |
| |
| WalkState->LocalVariables[i].Name.Integer |= (i << 24); |
| WalkState->LocalVariables[i].DescriptorType = ACPI_DESC_TYPE_NAMED; |
| WalkState->LocalVariables[i].Type = ACPI_TYPE_ANY; |
| WalkState->LocalVariables[i].Flags = ANOBJ_METHOD_LOCAL; |
| } |
| |
| return_VOID; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsMethodDataDeleteAll |
| * |
| * PARAMETERS: WalkState - Current walk state object |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Delete method locals and arguments. Arguments are only |
| * deleted if this method was called from another method. |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiDsMethodDataDeleteAll ( |
| ACPI_WALK_STATE *WalkState) |
| { |
| UINT32 Index; |
| |
| |
| ACPI_FUNCTION_TRACE (DsMethodDataDeleteAll); |
| |
| |
| /* Detach the locals */ |
| |
| for (Index = 0; Index < ACPI_METHOD_NUM_LOCALS; Index++) |
| { |
| if (WalkState->LocalVariables[Index].Object) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Local%u=%p\n", |
| Index, WalkState->LocalVariables[Index].Object)); |
| |
| /* Detach object (if present) and remove a reference */ |
| |
| AcpiNsDetachObject (&WalkState->LocalVariables[Index]); |
| } |
| } |
| |
| /* Detach the arguments */ |
| |
| for (Index = 0; Index < ACPI_METHOD_NUM_ARGS; Index++) |
| { |
| if (WalkState->Arguments[Index].Object) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Arg%u=%p\n", |
| Index, WalkState->Arguments[Index].Object)); |
| |
| /* Detach object (if present) and remove a reference */ |
| |
| AcpiNsDetachObject (&WalkState->Arguments[Index]); |
| } |
| } |
| |
| return_VOID; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsMethodDataInitArgs |
| * |
| * PARAMETERS: *Params - Pointer to a parameter list for the method |
| * MaxParamCount - The arg count for this method |
| * WalkState - Current walk state object |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Initialize arguments for a method. The parameter list is a list |
| * of ACPI operand objects, either null terminated or whose length |
| * is defined by MaxParamCount. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiDsMethodDataInitArgs ( |
| ACPI_OPERAND_OBJECT **Params, |
| UINT32 MaxParamCount, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_STATUS Status; |
| UINT32 Index = 0; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (DsMethodDataInitArgs, Params); |
| |
| |
| if (!Params) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "No param list passed to method\n")); |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| /* Copy passed parameters into the new method stack frame */ |
| |
| while ((Index < ACPI_METHOD_NUM_ARGS) && |
| (Index < MaxParamCount) && |
| Params[Index]) |
| { |
| /* |
| * A valid parameter. |
| * Store the argument in the method/walk descriptor. |
| * Do not copy the arg in order to implement call by reference |
| */ |
| Status = AcpiDsMethodDataSetValue (ACPI_REFCLASS_ARG, Index, |
| Params[Index], WalkState); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| Index++; |
| } |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%u args passed to method\n", Index)); |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsMethodDataGetNode |
| * |
| * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or |
| * ACPI_REFCLASS_ARG |
| * Index - Which Local or Arg whose type to get |
| * WalkState - Current walk state object |
| * Node - Where the node is returned. |
| * |
| * RETURN: Status and node |
| * |
| * DESCRIPTION: Get the Node associated with a local or arg. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiDsMethodDataGetNode ( |
| UINT8 Type, |
| UINT32 Index, |
| ACPI_WALK_STATE *WalkState, |
| ACPI_NAMESPACE_NODE **Node) |
| { |
| ACPI_FUNCTION_TRACE (DsMethodDataGetNode); |
| |
| |
| /* |
| * Method Locals and Arguments are supported |
| */ |
| switch (Type) |
| { |
| case ACPI_REFCLASS_LOCAL: |
| |
| if (Index > ACPI_METHOD_MAX_LOCAL) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Local index %u is invalid (max %u)", |
| Index, ACPI_METHOD_MAX_LOCAL)); |
| return_ACPI_STATUS (AE_AML_INVALID_INDEX); |
| } |
| |
| /* Return a pointer to the pseudo-node */ |
| |
| *Node = &WalkState->LocalVariables[Index]; |
| break; |
| |
| case ACPI_REFCLASS_ARG: |
| |
| if (Index > ACPI_METHOD_MAX_ARG) |
| { |
| ACPI_ERROR ((AE_INFO, |
| "Arg index %u is invalid (max %u)", |
| Index, ACPI_METHOD_MAX_ARG)); |
| return_ACPI_STATUS (AE_AML_INVALID_INDEX); |
| } |
| |
| /* Return a pointer to the pseudo-node */ |
| |
| *Node = &WalkState->Arguments[Index]; |
| break; |
| |
| default: |
| ACPI_ERROR ((AE_INFO, "Type %u is invalid", Type)); |
| return_ACPI_STATUS (AE_TYPE); |
| } |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsMethodDataSetValue |
| * |
| * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or |
| * ACPI_REFCLASS_ARG |
| * Index - Which Local or Arg to get |
| * Object - Object to be inserted into the stack entry |
| * WalkState - Current walk state object |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Insert an object onto the method stack at entry Opcode:Index. |
| * Note: There is no "implicit conversion" for locals. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| AcpiDsMethodDataSetValue ( |
| UINT8 Type, |
| UINT32 Index, |
| ACPI_OPERAND_OBJECT *Object, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| |
| |
| ACPI_FUNCTION_TRACE (DsMethodDataSetValue); |
| |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| "NewObj %p Type %2.2X, Refs=%u [%s]\n", Object, |
| Type, Object->Common.ReferenceCount, |
| AcpiUtGetTypeName (Object->Common.Type))); |
| |
| /* Get the namespace node for the arg/local */ |
| |
| Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* |
| * Increment ref count so object can't be deleted while installed. |
| * NOTE: We do not copy the object in order to preserve the call by |
| * reference semantics of ACPI Control Method invocation. |
| * (See ACPI Specification 2.0C) |
| */ |
| AcpiUtAddReference (Object); |
| |
| /* Install the object */ |
| |
| Node->Object = Object; |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsMethodDataGetValue |
| * |
| * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or |
| * ACPI_REFCLASS_ARG |
| * Index - Which localVar or argument to get |
| * WalkState - Current walk state object |
| * DestDesc - Where Arg or Local value is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Retrieve value of selected Arg or Local for this method |
| * Used only in AcpiExResolveToValue(). |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiDsMethodDataGetValue ( |
| UINT8 Type, |
| UINT32 Index, |
| ACPI_WALK_STATE *WalkState, |
| ACPI_OPERAND_OBJECT **DestDesc) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_OPERAND_OBJECT *Object; |
| |
| |
| ACPI_FUNCTION_TRACE (DsMethodDataGetValue); |
| |
| |
| /* Validate the object descriptor */ |
| |
| if (!DestDesc) |
| { |
| ACPI_ERROR ((AE_INFO, "Null object descriptor pointer")); |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* Get the namespace node for the arg/local */ |
| |
| Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* Get the object from the node */ |
| |
| Object = Node->Object; |
| |
| /* Examine the returned object, it must be valid. */ |
| |
| if (!Object) |
| { |
| /* |
| * Index points to uninitialized object. |
| * This means that either 1) The expected argument was |
| * not passed to the method, or 2) A local variable |
| * was referenced by the method (via the ASL) |
| * before it was initialized. Either case is an error. |
| */ |
| |
| /* If slack enabled, init the LocalX/ArgX to an Integer of value zero */ |
| |
| if (AcpiGbl_EnableInterpreterSlack) |
| { |
| Object = AcpiUtCreateIntegerObject ((UINT64) 0); |
| if (!Object) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| Node->Object = Object; |
| } |
| |
| /* Otherwise, return the error */ |
| |
| else switch (Type) |
| { |
| case ACPI_REFCLASS_ARG: |
| |
| ACPI_ERROR ((AE_INFO, |
| "Uninitialized Arg[%u] at node %p", |
| Index, Node)); |
| |
| return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG); |
| |
| case ACPI_REFCLASS_LOCAL: |
| |
| /* |
| * No error message for this case, will be trapped again later to |
| * detect and ignore cases of Store(LocalX,LocalX) |
| */ |
| return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL); |
| |
| default: |
| |
| ACPI_ERROR ((AE_INFO, "Not a Arg/Local opcode: 0x%X", Type)); |
| return_ACPI_STATUS (AE_AML_INTERNAL); |
| } |
| } |
| |
| /* |
| * The Index points to an initialized and valid object. |
| * Return an additional reference to the object |
| */ |
| *DestDesc = Object; |
| AcpiUtAddReference (Object); |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsMethodDataDeleteValue |
| * |
| * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or |
| * ACPI_REFCLASS_ARG |
| * Index - Which localVar or argument to delete |
| * WalkState - Current walk state object |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Delete the entry at Opcode:Index. Inserts |
| * a null into the stack slot after the object is deleted. |
| * |
| ******************************************************************************/ |
| |
| static void |
| AcpiDsMethodDataDeleteValue ( |
| UINT8 Type, |
| UINT32 Index, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_OPERAND_OBJECT *Object; |
| |
| |
| ACPI_FUNCTION_TRACE (DsMethodDataDeleteValue); |
| |
| |
| /* Get the namespace node for the arg/local */ |
| |
| Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_VOID; |
| } |
| |
| /* Get the associated object */ |
| |
| Object = AcpiNsGetAttachedObject (Node); |
| |
| /* |
| * Undefine the Arg or Local by setting its descriptor |
| * pointer to NULL. Locals/Args can contain both |
| * ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs |
| */ |
| Node->Object = NULL; |
| |
| if ((Object) && |
| (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_OPERAND)) |
| { |
| /* |
| * There is a valid object. |
| * Decrement the reference count by one to balance the |
| * increment when the object was stored. |
| */ |
| AcpiUtRemoveReference (Object); |
| } |
| |
| return_VOID; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsStoreObjectToLocal |
| * |
| * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or |
| * ACPI_REFCLASS_ARG |
| * Index - Which Local or Arg to set |
| * ObjDesc - Value to be stored |
| * WalkState - Current walk state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Store a value in an Arg or Local. The ObjDesc is installed |
| * as the new value for the Arg or Local and the reference count |
| * for ObjDesc is incremented. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiDsStoreObjectToLocal ( |
| UINT8 Type, |
| UINT32 Index, |
| ACPI_OPERAND_OBJECT *ObjDesc, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_OPERAND_OBJECT *CurrentObjDesc; |
| ACPI_OPERAND_OBJECT *NewObjDesc; |
| |
| |
| ACPI_FUNCTION_TRACE (DsStoreObjectToLocal); |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Type=%2.2X Index=%u Obj=%p\n", |
| Type, Index, ObjDesc)); |
| |
| /* Parameter validation */ |
| |
| if (!ObjDesc) |
| { |
| return_ACPI_STATUS (AE_BAD_PARAMETER); |
| } |
| |
| /* Get the namespace node for the arg/local */ |
| |
| Status = AcpiDsMethodDataGetNode (Type, Index, WalkState, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| CurrentObjDesc = AcpiNsGetAttachedObject (Node); |
| if (CurrentObjDesc == ObjDesc) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n", |
| ObjDesc)); |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* |
| * If the reference count on the object is more than one, we must |
| * take a copy of the object before we store. A reference count |
| * of exactly 1 means that the object was just created during the |
| * evaluation of an expression, and we can safely use it since it |
| * is not used anywhere else. |
| */ |
| NewObjDesc = ObjDesc; |
| if (ObjDesc->Common.ReferenceCount > 1) |
| { |
| Status = AcpiUtCopyIobjectToIobject (ObjDesc, &NewObjDesc, WalkState); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| } |
| |
| /* |
| * If there is an object already in this slot, we either |
| * have to delete it, or if this is an argument and there |
| * is an object reference stored there, we have to do |
| * an indirect store! |
| */ |
| if (CurrentObjDesc) |
| { |
| /* |
| * Check for an indirect store if an argument |
| * contains an object reference (stored as an Node). |
| * We don't allow this automatic dereferencing for |
| * locals, since a store to a local should overwrite |
| * anything there, including an object reference. |
| * |
| * If both Arg0 and Local0 contain RefOf (Local4): |
| * |
| * Store (1, Arg0) - Causes indirect store to local4 |
| * Store (1, Local0) - Stores 1 in local0, overwriting |
| * the reference to local4 |
| * Store (1, DeRefof (Local0)) - Causes indirect store to local4 |
| * |
| * Weird, but true. |
| */ |
| if (Type == ACPI_REFCLASS_ARG) |
| { |
| /* |
| * If we have a valid reference object that came from RefOf(), |
| * do the indirect store |
| */ |
| if ((ACPI_GET_DESCRIPTOR_TYPE (CurrentObjDesc) == ACPI_DESC_TYPE_OPERAND) && |
| (CurrentObjDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) && |
| (CurrentObjDesc->Reference.Class == ACPI_REFCLASS_REFOF)) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, |
| "Arg (%p) is an ObjRef(Node), storing in node %p\n", |
| NewObjDesc, CurrentObjDesc)); |
| |
| /* |
| * Store this object to the Node (perform the indirect store) |
| * NOTE: No implicit conversion is performed, as per the ACPI |
| * specification rules on storing to Locals/Args. |
| */ |
| Status = AcpiExStoreObjectToNode (NewObjDesc, |
| CurrentObjDesc->Reference.Object, WalkState, |
| ACPI_NO_IMPLICIT_CONVERSION); |
| |
| /* Remove local reference if we copied the object above */ |
| |
| if (NewObjDesc != ObjDesc) |
| { |
| AcpiUtRemoveReference (NewObjDesc); |
| } |
| return_ACPI_STATUS (Status); |
| } |
| } |
| |
| /* Delete the existing object before storing the new one */ |
| |
| AcpiDsMethodDataDeleteValue (Type, Index, WalkState); |
| } |
| |
| /* |
| * Install the Obj descriptor (*NewObjDesc) into |
| * the descriptor for the Arg or Local. |
| * (increments the object reference count by one) |
| */ |
| Status = AcpiDsMethodDataSetValue (Type, Index, NewObjDesc, WalkState); |
| |
| /* Remove local reference if we copied the object above */ |
| |
| if (NewObjDesc != ObjDesc) |
| { |
| AcpiUtRemoveReference (NewObjDesc); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| #ifdef ACPI_OBSOLETE_FUNCTIONS |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDsMethodDataGetType |
| * |
| * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP |
| * Index - Which Local or Arg whose type to get |
| * WalkState - Current walk state object |
| * |
| * RETURN: Data type of current value of the selected Arg or Local |
| * |
| * DESCRIPTION: Get the type of the object stored in the Local or Arg |
| * |
| ******************************************************************************/ |
| |
| ACPI_OBJECT_TYPE |
| AcpiDsMethodDataGetType ( |
| UINT16 Opcode, |
| UINT32 Index, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_OPERAND_OBJECT *Object; |
| |
| |
| ACPI_FUNCTION_TRACE (DsMethodDataGetType); |
| |
| |
| /* Get the namespace node for the arg/local */ |
| |
| Status = AcpiDsMethodDataGetNode (Opcode, Index, WalkState, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_VALUE ((ACPI_TYPE_NOT_FOUND)); |
| } |
| |
| /* Get the object */ |
| |
| Object = AcpiNsGetAttachedObject (Node); |
| if (!Object) |
| { |
| /* Uninitialized local/arg, return TYPE_ANY */ |
| |
| return_VALUE (ACPI_TYPE_ANY); |
| } |
| |
| /* Get the object type */ |
| |
| return_VALUE (Object->Type); |
| } |
| #endif |
| |
| |