diff options
Diffstat (limited to 'sys/contrib/dev/acpica/Subsystem/Dispatcher/dsmthdat.c')
| -rw-r--r-- | sys/contrib/dev/acpica/Subsystem/Dispatcher/dsmthdat.c | 882 |
1 files changed, 882 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/Subsystem/Dispatcher/dsmthdat.c b/sys/contrib/dev/acpica/Subsystem/Dispatcher/dsmthdat.c new file mode 100644 index 0000000..e6b5cec --- /dev/null +++ b/sys/contrib/dev/acpica/Subsystem/Dispatcher/dsmthdat.c @@ -0,0 +1,882 @@ +/******************************************************************************* + * + * Module Name: dsmthdat - control method arguments and local variables + * $Revision: 34 $ + * + ******************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999, 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 DISPATCHER + MODULE_NAME ("dsmthdat") + + +/******************************************************************************* + * + * FUNCTION: AcpiDsMethodDataInit + * + * PARAMETERS: *ObjDesc + * + * 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 + * AcpiCmCallocate(). + * + * 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 = INTERNAL_TYPE_METHOD_ARGUMENT; + } + + /* 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 = INTERNAL_TYPE_METHOD_LOCAL_VAR; + } + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsMethodDataDeleteAll + * + * PARAMETERS: None + * + * 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 */ + + DEBUG_PRINT (ACPI_INFO, + ("MethodDeleteAll: Deleting local variables in %p\n", WalkState)); + + for (Index = 0; Index < MTH_NUM_LOCALS; Index++) + { + Object = WalkState->LocalVariables[Index].Object; + if (Object) + { + DEBUG_PRINT (TRACE_EXEC, + ("MethodDeleteAll: Deleting Local%d=%p\n", Index, Object)); + + /* Remove first */ + + WalkState->LocalVariables[Index].Object = NULL; + + /* Was given a ref when stored */ + + AcpiCmRemoveReference (Object); + } + } + + + /* Delete the arguments */ + + DEBUG_PRINT (ACPI_INFO, + ("MethodDeleteAll: Deleting arguments in %p\n", WalkState)); + + for (Index = 0; Index < MTH_NUM_ARGS; Index++) + { + Object = WalkState->Arguments[Index].Object; + if (Object) + { + DEBUG_PRINT (TRACE_EXEC, + ("MethodDeleteAll: Deleting Arg%d=%p\n", Index, Object)); + + /* Remove first */ + + WalkState->Arguments[Index].Object = NULL; + + /* Was given a ref when stored */ + + AcpiCmRemoveReference (Object); + } + } + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsMethodDataInitArgs + * + * PARAMETERS: None + * + * 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) + { + DEBUG_PRINT (TRACE_EXEC, + ("DsMethodDataInitArgs: 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 = AcpiDsMethodDataSetValue (MTH_TYPE_ARG, Mindex, + Params[Pindex], WalkState); + if (ACPI_FAILURE (Status)) + { + break; + } + + Pindex++; + } + + else + { + break; + } + } + + DEBUG_PRINT (TRACE_EXEC, + ("DsMethodDataInitArgs: %d args passed to method\n", Pindex)); + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsMethodDataGetEntry + * + * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG + * Index - Which localVar or argument to get + * Entry - Pointer to where a pointer to the stack + * entry is returned. + * + * RETURN: Status + * + * DESCRIPTION: Get the address of the stack entry given by Type:Index + * + ******************************************************************************/ + +ACPI_STATUS +AcpiDsMethodDataGetEntry ( + UINT32 Type, + UINT32 Index, + ACPI_WALK_STATE *WalkState, + ACPI_OPERAND_OBJECT ***Entry) +{ + + FUNCTION_TRACE_U32 ("DsMethodDataGetEntry", Index); + + + /* + * Get the requested object. + * The stack "Type" is either a LocalVariable or an Argument + */ + + switch (Type) + { + + case MTH_TYPE_LOCAL: + + if (Index > MTH_MAX_LOCAL) + { + DEBUG_PRINT (ACPI_ERROR, + ("DsMethodDataGetEntry: 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 MTH_TYPE_ARG: + + if (Index > MTH_MAX_ARG) + { + DEBUG_PRINT (ACPI_ERROR, + ("DsMethodDataGetEntry: Argument 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: + DEBUG_PRINT (ACPI_ERROR, + ("DsMethodDataGetEntry: Stack type %d is invalid\n", + Type)); + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsMethodDataSetEntry + * + * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG + * Index - Which localVar or argument to get + * Object - Object to be inserted into the stack entry + * + * RETURN: Status + * + * DESCRIPTION: Insert an object onto the method stack at entry Type:Index. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiDsMethodDataSetEntry ( + UINT32 Type, + 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 (Type, Index, WalkState, &Entry); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + /* Increment ref count so object can't be deleted while installed */ + + AcpiCmAddReference (Object); + + /* Install the object into the stack entry */ + + *Entry = Object; + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsMethodDataGetType + * + * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG + * Index - Which localVar or argument whose type + * to get + * + * RETURN: Data type of selected Arg or Local + * Used only in ExecMonadic2()/TypeOp. + * + ******************************************************************************/ + +OBJECT_TYPE_INTERNAL +AcpiDsMethodDataGetType ( + UINT32 Type, + 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 (Type, 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: AcpiDsMethodDataGetNte + * + * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG + * Index - Which localVar or argument whose type + * to get + * + * RETURN: Get the Node associated with a local or arg. + * + ******************************************************************************/ + +ACPI_NAMESPACE_NODE * +AcpiDsMethodDataGetNte ( + UINT32 Type, + UINT32 Index, + ACPI_WALK_STATE *WalkState) +{ + ACPI_NAMESPACE_NODE *Node = NULL; + + + FUNCTION_TRACE ("DsMethodDataGetNte"); + + + switch (Type) + { + + case MTH_TYPE_LOCAL: + + if (Index > MTH_MAX_LOCAL) + { + DEBUG_PRINT (ACPI_ERROR, + ("DsMethodDataGetEntry: LocalVar index %d is invalid (max %d)\n", + Index, MTH_MAX_LOCAL)); + return_PTR (Node); + } + + Node = &WalkState->LocalVariables[Index]; + break; + + + case MTH_TYPE_ARG: + + if (Index > MTH_MAX_ARG) + { + DEBUG_PRINT (ACPI_ERROR, + ("DsMethodDataGetEntry: Argument index %d is invalid (max %d)\n", + Index, MTH_MAX_ARG)); + return_PTR (Node); + } + + Node = &WalkState->Arguments[Index]; + break; + + + default: + DEBUG_PRINT (ACPI_ERROR, + ("DsMethodDataGetEntry: Stack type %d is invalid\n", + Type)); + break; + } + + + return_PTR (Node); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsMethodDataGetValue + * + * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG + * Index - Which localVar or argument to get + * *DestDesc - 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 AcpiAmlResolveToValue(). + * + ******************************************************************************/ + +ACPI_STATUS +AcpiDsMethodDataGetValue ( + UINT32 Type, + 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) + { + DEBUG_PRINT (ACPI_ERROR, + ("DsMethodDataGetValue: NULL object descriptor pointer\n")); + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + + /* Get a pointer to the requested method stack entry */ + + Status = AcpiDsMethodDataGetEntry (Type, 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 (Type) + { + case MTH_TYPE_ARG: + DEBUG_PRINT (ACPI_ERROR, + ("DsMethodDataGetValue: Uninitialized Arg[%d] at entry %X\n", + Index, Entry)); + return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG); + break; + + case MTH_TYPE_LOCAL: + DEBUG_PRINT (ACPI_ERROR, + ("DsMethodDataGetValue: Uninitialized Local[%d] at entry %X\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; + AcpiCmAddReference (Object); + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsMethodDataDeleteValue + * + * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG + * Index - Which localVar or argument to delete + * + * RETURN: Status + * + * DESCRIPTION: Delete the entry at Type:Index on the method stack. Inserts + * a null into the stack slot after the object is deleted. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiDsMethodDataDeleteValue ( + UINT32 Type, + 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 (Type, 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. + */ + + AcpiCmRemoveReference (Object); + } + + + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDsMethodDataSetValue + * + * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG + * Index - Which localVar or argument to set + * *SrcDesc - Value to be stored + * *DestDesc - Descriptor into which *SrcDesc + * can be copied, or NULL if one must + * be allocated for the purpose. If + * provided, this descriptor will be + * used for the new value. + * + * 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 + * is incremented. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiDsMethodDataSetValue ( + UINT32 Type, + UINT32 Index, + ACPI_OPERAND_OBJECT *SrcDesc, + ACPI_WALK_STATE *WalkState) +{ + ACPI_STATUS Status; + ACPI_OPERAND_OBJECT **Entry; + + + FUNCTION_TRACE ("DsMethodDataSetValue"); + DEBUG_PRINT (TRACE_EXEC, + ("DsMethodDataSetValue: Type=%d Idx=%d Obj=%p\n", + Type, Index, SrcDesc)); + + + /* Parameter validation */ + + if (!SrcDesc) + { + return_ACPI_STATUS (AE_BAD_PARAMETER); + } + + + /* Get a pointer to the requested method stack entry */ + + Status = AcpiDsMethodDataGetEntry (Type, Index, WalkState, &Entry); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + if (*Entry == SrcDesc) + { + DEBUG_PRINT (TRACE_EXEC, + ("DsMethodDataSetValue: 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 ((Type == MTH_TYPE_ARG) && + (VALID_DESCRIPTOR_TYPE (*Entry, ACPI_DESC_TYPE_NAMED))) + { + DEBUG_PRINT (TRACE_EXEC, + ("DsMethodDataSetValue: 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); + } + + + /* + * Otherwise, just delete the existing object + * before storing the new one + */ + + AcpiDsMethodDataDeleteValue (Type, 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 (Type, Index, SrcDesc, WalkState); + if (ACPI_FAILURE (Status)) + { + goto Cleanup; + } + + /* Normal exit */ + + return_ACPI_STATUS (AE_OK); + + + /* Error exit */ + +Cleanup: + + return_ACPI_STATUS (Status); +} + |
