806 lines
26 KiB
C
806 lines
26 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: dsmthdat - control method arguments and local variables
|
|
* $Revision: 78 $
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999 - 2004, 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 "acdispat.h"
|
|
#include "amlcode.h"
|
|
#include "acnamesp.h"
|
|
#include "acinterp.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_DISPATCHER
|
|
ACPI_MODULE_NAME ("dsmthdat")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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 NTEs 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_MEM_CALLOCATE().
|
|
*
|
|
* 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].Descriptor = ACPI_DESC_TYPE_NAMED;
|
|
WalkState->Arguments[i].Type = ACPI_TYPE_ANY;
|
|
WalkState->Arguments[i].Flags = ANOBJ_END_OF_PEER_LIST | 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].Descriptor = ACPI_DESC_TYPE_NAMED;
|
|
WalkState->LocalVariables[i].Type = ACPI_TYPE_ANY;
|
|
WalkState->LocalVariables[i].Flags = ANOBJ_END_OF_PEER_LIST | 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%d=%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%d=%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 (AML_ARG_OP, Index, Params[Index], WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
Index++;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%d args passed to method\n", Index));
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataGetNode
|
|
*
|
|
* PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
|
|
* Index - Which localVar or argument whose type
|
|
* to get
|
|
* WalkState - Current walk state object
|
|
*
|
|
* RETURN: Get the Node associated with a local or arg.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataGetNode (
|
|
UINT16 Opcode,
|
|
UINT32 Index,
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_NAMESPACE_NODE **Node)
|
|
{
|
|
ACPI_FUNCTION_TRACE ("DsMethodDataGetNode");
|
|
|
|
|
|
/*
|
|
* Method Locals and Arguments are supported
|
|
*/
|
|
switch (Opcode)
|
|
{
|
|
case AML_LOCAL_OP:
|
|
|
|
if (Index > ACPI_METHOD_MAX_LOCAL)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Local index %d is invalid (max %d)\n",
|
|
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 AML_ARG_OP:
|
|
|
|
if (Index > ACPI_METHOD_MAX_ARG)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Arg index %d is invalid (max %d)\n",
|
|
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_DEBUG_PRINT ((ACPI_DB_ERROR, "Opcode %d is invalid\n", Opcode));
|
|
return_ACPI_STATUS (AE_AML_BAD_OPCODE);
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataSetValue
|
|
*
|
|
* PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
|
|
* Index - Which localVar or argument 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.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataSetValue (
|
|
UINT16 Opcode,
|
|
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,
|
|
"obj %p op %X, ref count = %d [%s]\n", Object,
|
|
Opcode, Object->Common.ReferenceCount,
|
|
AcpiUtGetTypeName (Object->Common.Type)));
|
|
|
|
/* Get the namespace node for the arg/local */
|
|
|
|
Status = AcpiDsMethodDataGetNode (Opcode, 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: AcpiDsMethodDataGetType
|
|
*
|
|
* PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
|
|
* Index - Which localVar or argument whose type
|
|
* to get
|
|
* WalkState - Current walk state object
|
|
*
|
|
* RETURN: Data type of current value of the selected Arg or Local
|
|
*
|
|
******************************************************************************/
|
|
|
|
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 (ACPI_GET_OBJECT_TYPE (Object));
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataGetValue
|
|
*
|
|
* PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
|
|
* Index - Which localVar or argument to get
|
|
* WalkState - Current walk state object
|
|
* *DestDesc - Ptr to Descriptor into which selected Arg
|
|
* or Local value should be copied
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Retrieve value of selected Arg or Local from the method frame
|
|
* at the current top of the method stack.
|
|
* Used only in AcpiExResolveToValue().
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataGetValue (
|
|
UINT16 Opcode,
|
|
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_DEBUG_PRINT ((ACPI_DB_ERROR, "Null object descriptor pointer\n"));
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the namespace node for the arg/local */
|
|
|
|
Status = AcpiDsMethodDataGetNode (Opcode, 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.
|
|
*/
|
|
switch (Opcode)
|
|
{
|
|
case AML_ARG_OP:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Arg[%d] at node %p\n",
|
|
Index, Node));
|
|
|
|
return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG);
|
|
|
|
case AML_LOCAL_OP:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Local[%d] at node %p\n",
|
|
Index, Node));
|
|
|
|
return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL);
|
|
|
|
default:
|
|
ACPI_REPORT_ERROR (("Not Arg/Local opcode: %X\n", Opcode));
|
|
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: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
|
|
* Index - Which localVar or argument to delete
|
|
* WalkState - Current walk state object
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Delete the entry at Opcode:Index on the method stack. Inserts
|
|
* a null into the stack slot after the object is deleted.
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiDsMethodDataDeleteValue (
|
|
UINT16 Opcode,
|
|
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 (Opcode, 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: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
|
|
* Index - Which localVar or argument 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 (
|
|
UINT16 Opcode,
|
|
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, "Opcode=%d Idx=%d Obj=%p\n",
|
|
Opcode, Index, ObjDesc));
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!ObjDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the namespace node for the arg/local */
|
|
|
|
Status = AcpiDsMethodDataGetNode (Opcode, 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 (Opcode == AML_ARG_OP)
|
|
{
|
|
/*
|
|
* Make sure that the object is the correct type. This may be overkill, but
|
|
* it is here because references were NS nodes in the past. Now they are
|
|
* operand objects of type Reference.
|
|
*/
|
|
if (ACPI_GET_DESCRIPTOR_TYPE (CurrentObjDesc) != ACPI_DESC_TYPE_OPERAND)
|
|
{
|
|
ACPI_REPORT_ERROR (("Invalid descriptor type while storing to method arg: [%s]\n",
|
|
AcpiUtGetDescriptorName (CurrentObjDesc)));
|
|
return_ACPI_STATUS (AE_AML_INTERNAL);
|
|
}
|
|
|
|
/*
|
|
* If we have a valid reference object that came from RefOf(), do the
|
|
* indirect store
|
|
*/
|
|
if ((CurrentObjDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) &&
|
|
(CurrentObjDesc->Reference.Opcode == AML_REF_OF_OP))
|
|
{
|
|
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 (Opcode, Index, WalkState);
|
|
}
|
|
|
|
/*
|
|
* Install the Obj descriptor (*NewObjDesc) into
|
|
* the descriptor for the Arg or Local.
|
|
* (increments the object reference count by one)
|
|
*/
|
|
Status = AcpiDsMethodDataSetValue (Opcode, Index, NewObjDesc, WalkState);
|
|
|
|
/* Remove local reference if we copied the object above */
|
|
|
|
if (NewObjDesc != ObjDesc)
|
|
{
|
|
AcpiUtRemoveReference (NewObjDesc);
|
|
}
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|