874 lines
27 KiB
C
874 lines
27 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: dsmthdat - control method arguments and local variables
|
|
* $Revision: 49 $
|
|
*
|
|
******************************************************************************/
|
|
|
|
/******************************************************************************
|
|
*
|
|
* 1. Copyright Notice
|
|
*
|
|
* Some or all of this work - Copyright (c) 1999, 2000, 2001, 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 "acparser.h"
|
|
#include "acdispat.h"
|
|
#include "acinterp.h"
|
|
#include "amlcode.h"
|
|
#include "acnamesp.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_DISPATCHER
|
|
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.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataInit (
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
UINT32 i;
|
|
|
|
|
|
FUNCTION_TRACE ("DsMethodDataInit");
|
|
|
|
/*
|
|
* WalkState fields are initialized to zero by the
|
|
* ACPI_MEM_CALLOCATE().
|
|
*
|
|
* An Node is assigned to each argument and local so
|
|
* that RefOf() can return a pointer to the Node.
|
|
*/
|
|
|
|
/* Init the method arguments */
|
|
|
|
for (i = 0; i < MTH_NUM_ARGS; i++)
|
|
{
|
|
MOVE_UNALIGNED32_TO_32 (&WalkState->Arguments[i].Name,
|
|
NAMEOF_ARG_NTE);
|
|
WalkState->Arguments[i].Name |= (i << 24);
|
|
WalkState->Arguments[i].DataType = 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 < MTH_NUM_LOCALS; i++)
|
|
{
|
|
MOVE_UNALIGNED32_TO_32 (&WalkState->LocalVariables[i].Name,
|
|
NAMEOF_LOCAL_NTE);
|
|
|
|
WalkState->LocalVariables[i].Name |= (i << 24);
|
|
WalkState->LocalVariables[i].DataType = ACPI_DESC_TYPE_NAMED;
|
|
WalkState->LocalVariables[i].Type = ACPI_TYPE_ANY;
|
|
WalkState->LocalVariables[i].Flags = ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_LOCAL;
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataDeleteAll
|
|
*
|
|
* PARAMETERS: WalkState - Current walk state object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Delete method locals and arguments. Arguments are only
|
|
* deleted if this method was called from another method.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataDeleteAll (
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
UINT32 Index;
|
|
ACPI_OPERAND_OBJECT *Object;
|
|
|
|
|
|
FUNCTION_TRACE ("DsMethodDataDeleteAll");
|
|
|
|
|
|
/* Delete the locals */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Deleting local variables in %p\n", WalkState));
|
|
|
|
for (Index = 0; Index < MTH_NUM_LOCALS; Index++)
|
|
{
|
|
Object = WalkState->LocalVariables[Index].Object;
|
|
if (Object)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Local%d=%p\n", Index, Object));
|
|
|
|
/* Remove first */
|
|
|
|
WalkState->LocalVariables[Index].Object = NULL;
|
|
|
|
/* Was given a ref when stored */
|
|
|
|
AcpiUtRemoveReference (Object);
|
|
}
|
|
}
|
|
|
|
|
|
/* Delete the arguments */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Deleting arguments in %p\n", WalkState));
|
|
|
|
for (Index = 0; Index < MTH_NUM_ARGS; Index++)
|
|
{
|
|
Object = WalkState->Arguments[Index].Object;
|
|
if (Object)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Deleting Arg%d=%p\n", Index, Object));
|
|
|
|
/* Remove first */
|
|
|
|
WalkState->Arguments[Index].Object = NULL;
|
|
|
|
/* Was given a ref when stored */
|
|
|
|
AcpiUtRemoveReference (Object);
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataInitArgs (
|
|
ACPI_OPERAND_OBJECT **Params,
|
|
UINT32 MaxParamCount,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
UINT32 Mindex;
|
|
UINT32 Pindex;
|
|
|
|
|
|
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 */
|
|
|
|
for (Pindex = Mindex = 0;
|
|
(Mindex < MTH_NUM_ARGS) && (Pindex < MaxParamCount);
|
|
Mindex++)
|
|
{
|
|
if (Params[Pindex])
|
|
{
|
|
/*
|
|
* A valid parameter.
|
|
* Set the current method argument to the
|
|
* Params[Pindex++] argument object descriptor
|
|
*/
|
|
Status = AcpiDsStoreObjectToLocal (AML_ARG_OP, Mindex,
|
|
Params[Pindex], WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
break;
|
|
}
|
|
|
|
Pindex++;
|
|
}
|
|
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "%d args passed to method\n", Pindex));
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataGetEntry
|
|
*
|
|
* PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
|
|
* Index - Which localVar or argument to get
|
|
* Entry - Pointer to where a pointer to the stack
|
|
* entry is returned.
|
|
* WalkState - Current walk state object
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Get the address of the object entry given by Opcode:Index
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataGetEntry (
|
|
UINT16 Opcode,
|
|
UINT32 Index,
|
|
ACPI_WALK_STATE *WalkState,
|
|
ACPI_OPERAND_OBJECT ***Entry)
|
|
{
|
|
|
|
FUNCTION_TRACE_U32 ("DsMethodDataGetEntry", Index);
|
|
|
|
|
|
/*
|
|
* Get the requested object.
|
|
* The stack "Opcode" is either a LocalVariable or an Argument
|
|
*/
|
|
switch (Opcode)
|
|
{
|
|
|
|
case AML_LOCAL_OP:
|
|
|
|
if (Index > MTH_MAX_LOCAL)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "LocalVar index %d is invalid (max %d)\n",
|
|
Index, MTH_MAX_LOCAL));
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
*Entry = (ACPI_OPERAND_OBJECT **)
|
|
&WalkState->LocalVariables[Index].Object;
|
|
break;
|
|
|
|
|
|
case AML_ARG_OP:
|
|
|
|
if (Index > MTH_MAX_ARG)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Arg index %d is invalid (max %d)\n",
|
|
Index, MTH_MAX_ARG));
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
*Entry = (ACPI_OPERAND_OBJECT **)
|
|
&WalkState->Arguments[Index].Object;
|
|
break;
|
|
|
|
|
|
default:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Opcode %d is invalid\n", Opcode));
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsMethodDataSetEntry
|
|
*
|
|
* 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.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataSetEntry (
|
|
UINT16 Opcode,
|
|
UINT32 Index,
|
|
ACPI_OPERAND_OBJECT *Object,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT **Entry;
|
|
|
|
|
|
FUNCTION_TRACE ("DsMethodDataSetEntry");
|
|
|
|
|
|
/* Get a pointer to the stack entry to set */
|
|
|
|
Status = AcpiDsMethodDataGetEntry (Opcode, Index, WalkState, &Entry);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Increment ref count so object can't be deleted while installed */
|
|
|
|
AcpiUtAddReference (Object);
|
|
|
|
/* Install the object into the stack entry */
|
|
|
|
*Entry = Object;
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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 selected Arg or Local
|
|
* Used only in ExecMonadic2()/TypeOp.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_OBJECT_TYPE8
|
|
AcpiDsMethodDataGetType (
|
|
UINT16 Opcode,
|
|
UINT32 Index,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT **Entry;
|
|
ACPI_OPERAND_OBJECT *Object;
|
|
|
|
|
|
FUNCTION_TRACE ("DsMethodDataGetType");
|
|
|
|
|
|
/* Get a pointer to the requested stack entry */
|
|
|
|
Status = AcpiDsMethodDataGetEntry (Opcode, Index, WalkState, &Entry);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_VALUE ((ACPI_TYPE_NOT_FOUND));
|
|
}
|
|
|
|
/* Get the object from the method stack */
|
|
|
|
Object = *Entry;
|
|
|
|
/* Get the object type */
|
|
|
|
if (!Object)
|
|
{
|
|
/* Any == 0 => "uninitialized" -- see spec 15.2.3.5.2.28 */
|
|
return_VALUE (ACPI_TYPE_ANY);
|
|
}
|
|
|
|
return_VALUE (Object->Common.Type);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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_NAMESPACE_NODE *
|
|
AcpiDsMethodDataGetNode (
|
|
UINT16 Opcode,
|
|
UINT32 Index,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_NAMESPACE_NODE *Node = NULL;
|
|
|
|
|
|
FUNCTION_TRACE ("DsMethodDataGetNode");
|
|
|
|
|
|
switch (Opcode)
|
|
{
|
|
|
|
case AML_LOCAL_OP:
|
|
|
|
if (Index > MTH_MAX_LOCAL)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Local index %d is invalid (max %d)\n",
|
|
Index, MTH_MAX_LOCAL));
|
|
return_PTR (Node);
|
|
}
|
|
|
|
Node = &WalkState->LocalVariables[Index];
|
|
break;
|
|
|
|
|
|
case AML_ARG_OP:
|
|
|
|
if (Index > MTH_MAX_ARG)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Arg index %d is invalid (max %d)\n",
|
|
Index, MTH_MAX_ARG));
|
|
return_PTR (Node);
|
|
}
|
|
|
|
Node = &WalkState->Arguments[Index];
|
|
break;
|
|
|
|
|
|
default:
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Opcode %d is invalid\n", Opcode));
|
|
break;
|
|
}
|
|
|
|
|
|
return_PTR (Node);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* 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_OPERAND_OBJECT **Entry;
|
|
ACPI_OPERAND_OBJECT *Object;
|
|
|
|
|
|
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 a pointer to the requested method stack entry */
|
|
|
|
Status = AcpiDsMethodDataGetEntry (Opcode, Index, WalkState, &Entry);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Get the object from the method stack */
|
|
|
|
Object = *Entry;
|
|
|
|
|
|
/* Examine the returned object, it must be valid. */
|
|
|
|
if (!Object)
|
|
{
|
|
/*
|
|
* Index points to uninitialized object stack value.
|
|
* 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 entry %p\n",
|
|
Index, Entry));
|
|
|
|
return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG);
|
|
break;
|
|
|
|
case AML_LOCAL_OP:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Local[%d] at entry %p\n",
|
|
Index, Entry));
|
|
|
|
return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Index points to initialized and valid object stack value.
|
|
* 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: Status
|
|
*
|
|
* DESCRIPTION: Delete the entry at Opcode:Index on the method stack. Inserts
|
|
* a null into the stack slot after the object is deleted.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsMethodDataDeleteValue (
|
|
UINT16 Opcode,
|
|
UINT32 Index,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT **Entry;
|
|
ACPI_OPERAND_OBJECT *Object;
|
|
|
|
|
|
FUNCTION_TRACE ("DsMethodDataDeleteValue");
|
|
|
|
|
|
/* Get a pointer to the requested entry */
|
|
|
|
Status = AcpiDsMethodDataGetEntry (Opcode, Index, WalkState, &Entry);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
/* Get the current entry in this slot k */
|
|
|
|
Object = *Entry;
|
|
|
|
/*
|
|
* Undefine the Arg or Local by setting its descriptor
|
|
* pointer to NULL. Locals/Args can contain both
|
|
* ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs
|
|
*/
|
|
*Entry = NULL;
|
|
|
|
if ((Object) &&
|
|
(VALID_DESCRIPTOR_TYPE (Object, ACPI_DESC_TYPE_INTERNAL)))
|
|
{
|
|
/*
|
|
* There is a valid object in this slot
|
|
* Decrement the reference count by one to balance the
|
|
* increment when the object was stored in the slot.
|
|
*/
|
|
AcpiUtRemoveReference (Object);
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiDsStoreObjectToLocal
|
|
*
|
|
* PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP
|
|
* Index - Which localVar or argument to set
|
|
* SrcDesc - Value to be stored
|
|
* WalkState - Current walk state
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Store a value in an Arg or Local. The SrcDesc is installed
|
|
* as the new value for the Arg or Local and the reference count
|
|
* for SrcDesc is incremented.
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiDsStoreObjectToLocal (
|
|
UINT16 Opcode,
|
|
UINT32 Index,
|
|
ACPI_OPERAND_OBJECT *SrcDesc,
|
|
ACPI_WALK_STATE *WalkState)
|
|
{
|
|
ACPI_STATUS Status;
|
|
ACPI_OPERAND_OBJECT **Entry;
|
|
|
|
|
|
FUNCTION_TRACE ("DsMethodDataSetValue");
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Opcode=%d Idx=%d Obj=%p\n",
|
|
Opcode, Index, SrcDesc));
|
|
|
|
|
|
/* Parameter validation */
|
|
|
|
if (!SrcDesc)
|
|
{
|
|
return_ACPI_STATUS (AE_BAD_PARAMETER);
|
|
}
|
|
|
|
|
|
/* Get a pointer to the requested method stack entry */
|
|
|
|
Status = AcpiDsMethodDataGetEntry (Opcode, Index, WalkState, &Entry);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
if (*Entry == SrcDesc)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n", SrcDesc));
|
|
goto Cleanup;
|
|
}
|
|
|
|
|
|
/*
|
|
* 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 (*Entry)
|
|
{
|
|
/*
|
|
* 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) &&
|
|
(VALID_DESCRIPTOR_TYPE (*Entry, ACPI_DESC_TYPE_NAMED)))
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
|
|
"Arg (%p) is an ObjRef(Node), storing in %p\n",
|
|
SrcDesc, *Entry));
|
|
|
|
/* Detach an existing object from the Node */
|
|
|
|
AcpiNsDetachObject ((ACPI_NAMESPACE_NODE *) *Entry);
|
|
|
|
/*
|
|
* Store this object into the Node
|
|
* (do the indirect store)
|
|
*/
|
|
Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) *Entry, SrcDesc,
|
|
SrcDesc->Common.Type);
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
|
|
#ifdef ACPI_ENABLE_IMPLICIT_CONVERSION
|
|
/*
|
|
* Perform "Implicit conversion" of the new object to the type of the
|
|
* existing object
|
|
*/
|
|
Status = AcpiExConvertToTargetType ((*Entry)->Common.Type, &SrcDesc, WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Delete the existing object
|
|
* before storing the new one
|
|
*/
|
|
AcpiDsMethodDataDeleteValue (Opcode, Index, WalkState);
|
|
}
|
|
|
|
|
|
/*
|
|
* Install the ObjStack descriptor (*SrcDesc) into
|
|
* the descriptor for the Arg or Local.
|
|
* Install the new object in the stack entry
|
|
* (increments the object reference count by one)
|
|
*/
|
|
Status = AcpiDsMethodDataSetEntry (Opcode, Index, SrcDesc, WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto Cleanup;
|
|
}
|
|
|
|
/* Normal exit */
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
|
|
|
|
/* Error exit */
|
|
|
|
Cleanup:
|
|
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|