dsmthdat.c revision 70243
167754Smsmith/******************************************************************************* 267754Smsmith * 367754Smsmith * Module Name: dsmthdat - control method arguments and local variables 470243Smsmith * $Revision: 37 $ 567754Smsmith * 667754Smsmith ******************************************************************************/ 767754Smsmith 867754Smsmith/****************************************************************************** 967754Smsmith * 1067754Smsmith * 1. Copyright Notice 1167754Smsmith * 1270243Smsmith * Some or all of this work - Copyright (c) 1999, 2000, Intel Corp. 1370243Smsmith * All rights reserved. 1467754Smsmith * 1567754Smsmith * 2. License 1667754Smsmith * 1767754Smsmith * 2.1. This is your license from Intel Corp. under its intellectual property 1867754Smsmith * rights. You may have additional license terms from the party that provided 1967754Smsmith * you this software, covering your right to use that party's intellectual 2067754Smsmith * property rights. 2167754Smsmith * 2267754Smsmith * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 2367754Smsmith * copy of the source code appearing in this file ("Covered Code") an 2467754Smsmith * irrevocable, perpetual, worldwide license under Intel's copyrights in the 2567754Smsmith * base code distributed originally by Intel ("Original Intel Code") to copy, 2667754Smsmith * make derivatives, distribute, use and display any portion of the Covered 2767754Smsmith * Code in any form, with the right to sublicense such rights; and 2867754Smsmith * 2967754Smsmith * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 3067754Smsmith * license (with the right to sublicense), under only those claims of Intel 3167754Smsmith * patents that are infringed by the Original Intel Code, to make, use, sell, 3267754Smsmith * offer to sell, and import the Covered Code and derivative works thereof 3367754Smsmith * solely to the minimum extent necessary to exercise the above copyright 3467754Smsmith * license, and in no event shall the patent license extend to any additions 3567754Smsmith * to or modifications of the Original Intel Code. No other license or right 3667754Smsmith * is granted directly or by implication, estoppel or otherwise; 3767754Smsmith * 3867754Smsmith * The above copyright and patent license is granted only if the following 3967754Smsmith * conditions are met: 4067754Smsmith * 4167754Smsmith * 3. Conditions 4267754Smsmith * 4367754Smsmith * 3.1. Redistribution of Source with Rights to Further Distribute Source. 4467754Smsmith * Redistribution of source code of any substantial portion of the Covered 4567754Smsmith * Code or modification with rights to further distribute source must include 4667754Smsmith * the above Copyright Notice, the above License, this list of Conditions, 4767754Smsmith * and the following Disclaimer and Export Compliance provision. In addition, 4867754Smsmith * Licensee must cause all Covered Code to which Licensee contributes to 4967754Smsmith * contain a file documenting the changes Licensee made to create that Covered 5067754Smsmith * Code and the date of any change. Licensee must include in that file the 5167754Smsmith * documentation of any changes made by any predecessor Licensee. Licensee 5267754Smsmith * must include a prominent statement that the modification is derived, 5367754Smsmith * directly or indirectly, from Original Intel Code. 5467754Smsmith * 5567754Smsmith * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 5667754Smsmith * Redistribution of source code of any substantial portion of the Covered 5767754Smsmith * Code or modification without rights to further distribute source must 5867754Smsmith * include the following Disclaimer and Export Compliance provision in the 5967754Smsmith * documentation and/or other materials provided with distribution. In 6067754Smsmith * addition, Licensee may not authorize further sublicense of source of any 6167754Smsmith * portion of the Covered Code, and must include terms to the effect that the 6267754Smsmith * license from Licensee to its licensee is limited to the intellectual 6367754Smsmith * property embodied in the software Licensee provides to its licensee, and 6467754Smsmith * not to intellectual property embodied in modifications its licensee may 6567754Smsmith * make. 6667754Smsmith * 6767754Smsmith * 3.3. Redistribution of Executable. Redistribution in executable form of any 6867754Smsmith * substantial portion of the Covered Code or modification must reproduce the 6967754Smsmith * above Copyright Notice, and the following Disclaimer and Export Compliance 7067754Smsmith * provision in the documentation and/or other materials provided with the 7167754Smsmith * distribution. 7267754Smsmith * 7367754Smsmith * 3.4. Intel retains all right, title, and interest in and to the Original 7467754Smsmith * Intel Code. 7567754Smsmith * 7667754Smsmith * 3.5. Neither the name Intel nor any other trademark owned or controlled by 7767754Smsmith * Intel shall be used in advertising or otherwise to promote the sale, use or 7867754Smsmith * other dealings in products derived from or relating to the Covered Code 7967754Smsmith * without prior written authorization from Intel. 8067754Smsmith * 8167754Smsmith * 4. Disclaimer and Export Compliance 8267754Smsmith * 8367754Smsmith * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 8467754Smsmith * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 8567754Smsmith * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 8667754Smsmith * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 8767754Smsmith * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 8867754Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 8967754Smsmith * PARTICULAR PURPOSE. 9067754Smsmith * 9167754Smsmith * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 9267754Smsmith * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 9367754Smsmith * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 9467754Smsmith * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 9567754Smsmith * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 9667754Smsmith * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 9767754Smsmith * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 9867754Smsmith * LIMITED REMEDY. 9967754Smsmith * 10067754Smsmith * 4.3. Licensee shall not export, either directly or indirectly, any of this 10167754Smsmith * software or system incorporating such software without first obtaining any 10267754Smsmith * required license or other approval from the U. S. Department of Commerce or 10367754Smsmith * any other agency or department of the United States Government. In the 10467754Smsmith * event Licensee exports any such software from the United States or 10567754Smsmith * re-exports any such software from a foreign destination, Licensee shall 10667754Smsmith * ensure that the distribution and export/re-export of the software is in 10767754Smsmith * compliance with all laws, regulations, orders, or other restrictions of the 10867754Smsmith * U.S. Export Administration Regulations. Licensee agrees that neither it nor 10967754Smsmith * any of its subsidiaries will export/re-export any technical data, process, 11067754Smsmith * software, or service, directly or indirectly, to any country for which the 11167754Smsmith * United States government or any agency thereof requires an export license, 11267754Smsmith * other governmental approval, or letter of assurance, without first obtaining 11367754Smsmith * such license, approval or letter. 11467754Smsmith * 11567754Smsmith *****************************************************************************/ 11667754Smsmith 11767754Smsmith#define __DSMTHDAT_C__ 11867754Smsmith 11967754Smsmith#include "acpi.h" 12067754Smsmith#include "acparser.h" 12167754Smsmith#include "acdispat.h" 12267754Smsmith#include "acinterp.h" 12367754Smsmith#include "amlcode.h" 12467754Smsmith#include "acnamesp.h" 12567754Smsmith 12667754Smsmith 12767754Smsmith#define _COMPONENT DISPATCHER 12867754Smsmith MODULE_NAME ("dsmthdat") 12967754Smsmith 13067754Smsmith 13167754Smsmith/******************************************************************************* 13267754Smsmith * 13367754Smsmith * FUNCTION: AcpiDsMethodDataInit 13467754Smsmith * 13567754Smsmith * PARAMETERS: *ObjDesc 13667754Smsmith * 13767754Smsmith * RETURN: Status 13867754Smsmith * 13967754Smsmith * DESCRIPTION: Initialize the data structures that hold the method's arguments 14067754Smsmith * and locals. The data struct is an array of NTEs for each. 14167754Smsmith * This allows RefOf and DeRefOf to work properly for these 14267754Smsmith * special data types. 14367754Smsmith * 14467754Smsmith ******************************************************************************/ 14567754Smsmith 14667754SmsmithACPI_STATUS 14767754SmsmithAcpiDsMethodDataInit ( 14867754Smsmith ACPI_WALK_STATE *WalkState) 14967754Smsmith{ 15067754Smsmith UINT32 i; 15167754Smsmith 15267754Smsmith 15367754Smsmith FUNCTION_TRACE ("DsMethodDataInit"); 15467754Smsmith 15567754Smsmith /* 15667754Smsmith * WalkState fields are initialized to zero by the 15767754Smsmith * AcpiCmCallocate(). 15867754Smsmith * 15967754Smsmith * An Node is assigned to each argument and local so 16067754Smsmith * that RefOf() can return a pointer to the Node. 16167754Smsmith */ 16267754Smsmith 16367754Smsmith /* Init the method arguments */ 16467754Smsmith 16567754Smsmith for (i = 0; i < MTH_NUM_ARGS; i++) 16667754Smsmith { 16767754Smsmith MOVE_UNALIGNED32_TO_32 (&WalkState->Arguments[i].Name, 16867754Smsmith NAMEOF_ARG_NTE); 16967754Smsmith WalkState->Arguments[i].Name |= (i << 24); 17067754Smsmith WalkState->Arguments[i].DataType = ACPI_DESC_TYPE_NAMED; 17169746Smsmith WalkState->Arguments[i].Type = ACPI_TYPE_ANY; 17269746Smsmith WalkState->Arguments[i].Flags = ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_ARG; 17367754Smsmith } 17467754Smsmith 17567754Smsmith /* Init the method locals */ 17667754Smsmith 17767754Smsmith for (i = 0; i < MTH_NUM_LOCALS; i++) 17867754Smsmith { 17967754Smsmith MOVE_UNALIGNED32_TO_32 (&WalkState->LocalVariables[i].Name, 18067754Smsmith NAMEOF_LOCAL_NTE); 18167754Smsmith 18267754Smsmith WalkState->LocalVariables[i].Name |= (i << 24); 18367754Smsmith WalkState->LocalVariables[i].DataType = ACPI_DESC_TYPE_NAMED; 18469746Smsmith WalkState->LocalVariables[i].Type = ACPI_TYPE_ANY; 18569746Smsmith WalkState->LocalVariables[i].Flags = ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_LOCAL; 18667754Smsmith } 18767754Smsmith 18867754Smsmith return_ACPI_STATUS (AE_OK); 18967754Smsmith} 19067754Smsmith 19167754Smsmith 19267754Smsmith/******************************************************************************* 19367754Smsmith * 19467754Smsmith * FUNCTION: AcpiDsMethodDataDeleteAll 19567754Smsmith * 19667754Smsmith * PARAMETERS: None 19767754Smsmith * 19867754Smsmith * RETURN: Status 19967754Smsmith * 20067754Smsmith * DESCRIPTION: Delete method locals and arguments. Arguments are only 20167754Smsmith * deleted if this method was called from another method. 20267754Smsmith * 20367754Smsmith ******************************************************************************/ 20467754Smsmith 20567754SmsmithACPI_STATUS 20667754SmsmithAcpiDsMethodDataDeleteAll ( 20767754Smsmith ACPI_WALK_STATE *WalkState) 20867754Smsmith{ 20967754Smsmith UINT32 Index; 21067754Smsmith ACPI_OPERAND_OBJECT *Object; 21167754Smsmith 21267754Smsmith 21367754Smsmith FUNCTION_TRACE ("DsMethodDataDeleteAll"); 21467754Smsmith 21567754Smsmith 21667754Smsmith /* Delete the locals */ 21767754Smsmith 21867754Smsmith DEBUG_PRINT (ACPI_INFO, 21967754Smsmith ("MethodDeleteAll: Deleting local variables in %p\n", WalkState)); 22067754Smsmith 22167754Smsmith for (Index = 0; Index < MTH_NUM_LOCALS; Index++) 22267754Smsmith { 22367754Smsmith Object = WalkState->LocalVariables[Index].Object; 22467754Smsmith if (Object) 22567754Smsmith { 22667754Smsmith DEBUG_PRINT (TRACE_EXEC, 22767754Smsmith ("MethodDeleteAll: Deleting Local%d=%p\n", Index, Object)); 22867754Smsmith 22967754Smsmith /* Remove first */ 23067754Smsmith 23167754Smsmith WalkState->LocalVariables[Index].Object = NULL; 23267754Smsmith 23367754Smsmith /* Was given a ref when stored */ 23467754Smsmith 23567754Smsmith AcpiCmRemoveReference (Object); 23667754Smsmith } 23767754Smsmith } 23867754Smsmith 23967754Smsmith 24067754Smsmith /* Delete the arguments */ 24167754Smsmith 24267754Smsmith DEBUG_PRINT (ACPI_INFO, 24367754Smsmith ("MethodDeleteAll: Deleting arguments in %p\n", WalkState)); 24467754Smsmith 24567754Smsmith for (Index = 0; Index < MTH_NUM_ARGS; Index++) 24667754Smsmith { 24767754Smsmith Object = WalkState->Arguments[Index].Object; 24867754Smsmith if (Object) 24967754Smsmith { 25067754Smsmith DEBUG_PRINT (TRACE_EXEC, 25167754Smsmith ("MethodDeleteAll: Deleting Arg%d=%p\n", Index, Object)); 25267754Smsmith 25367754Smsmith /* Remove first */ 25467754Smsmith 25567754Smsmith WalkState->Arguments[Index].Object = NULL; 25667754Smsmith 25767754Smsmith /* Was given a ref when stored */ 25867754Smsmith 25967754Smsmith AcpiCmRemoveReference (Object); 26067754Smsmith } 26167754Smsmith } 26267754Smsmith 26367754Smsmith return_ACPI_STATUS (AE_OK); 26467754Smsmith} 26567754Smsmith 26667754Smsmith 26767754Smsmith/******************************************************************************* 26867754Smsmith * 26967754Smsmith * FUNCTION: AcpiDsMethodDataInitArgs 27067754Smsmith * 27167754Smsmith * PARAMETERS: None 27267754Smsmith * 27367754Smsmith * RETURN: Status 27467754Smsmith * 27567754Smsmith * DESCRIPTION: Initialize arguments for a method 27667754Smsmith * 27767754Smsmith ******************************************************************************/ 27867754Smsmith 27967754SmsmithACPI_STATUS 28067754SmsmithAcpiDsMethodDataInitArgs ( 28167754Smsmith ACPI_OPERAND_OBJECT **Params, 28267754Smsmith UINT32 MaxParamCount, 28367754Smsmith ACPI_WALK_STATE *WalkState) 28467754Smsmith{ 28567754Smsmith ACPI_STATUS Status; 28667754Smsmith UINT32 Mindex; 28767754Smsmith UINT32 Pindex; 28867754Smsmith 28967754Smsmith 29067754Smsmith FUNCTION_TRACE_PTR ("DsMethodDataInitArgs", Params); 29167754Smsmith 29267754Smsmith 29367754Smsmith if (!Params) 29467754Smsmith { 29567754Smsmith DEBUG_PRINT (TRACE_EXEC, 29667754Smsmith ("DsMethodDataInitArgs: No param list passed to method\n")); 29767754Smsmith return_ACPI_STATUS (AE_OK); 29867754Smsmith } 29967754Smsmith 30067754Smsmith /* Copy passed parameters into the new method stack frame */ 30167754Smsmith 30267754Smsmith for (Pindex = Mindex = 0; 30367754Smsmith (Mindex < MTH_NUM_ARGS) && (Pindex < MaxParamCount); 30467754Smsmith Mindex++) 30567754Smsmith { 30667754Smsmith if (Params[Pindex]) 30767754Smsmith { 30867754Smsmith /* 30967754Smsmith * A valid parameter. 31067754Smsmith * Set the current method argument to the 31167754Smsmith * Params[Pindex++] argument object descriptor 31267754Smsmith */ 31367754Smsmith Status = AcpiDsMethodDataSetValue (MTH_TYPE_ARG, Mindex, 31467754Smsmith Params[Pindex], WalkState); 31567754Smsmith if (ACPI_FAILURE (Status)) 31667754Smsmith { 31767754Smsmith break; 31867754Smsmith } 31967754Smsmith 32067754Smsmith Pindex++; 32167754Smsmith } 32267754Smsmith 32367754Smsmith else 32467754Smsmith { 32567754Smsmith break; 32667754Smsmith } 32767754Smsmith } 32867754Smsmith 32967754Smsmith DEBUG_PRINT (TRACE_EXEC, 33067754Smsmith ("DsMethodDataInitArgs: %d args passed to method\n", Pindex)); 33167754Smsmith return_ACPI_STATUS (AE_OK); 33267754Smsmith} 33367754Smsmith 33467754Smsmith 33567754Smsmith/******************************************************************************* 33667754Smsmith * 33767754Smsmith * FUNCTION: AcpiDsMethodDataGetEntry 33867754Smsmith * 33967754Smsmith * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG 34067754Smsmith * Index - Which localVar or argument to get 34167754Smsmith * Entry - Pointer to where a pointer to the stack 34267754Smsmith * entry is returned. 34367754Smsmith * 34467754Smsmith * RETURN: Status 34567754Smsmith * 34667754Smsmith * DESCRIPTION: Get the address of the stack entry given by Type:Index 34767754Smsmith * 34867754Smsmith ******************************************************************************/ 34967754Smsmith 35067754SmsmithACPI_STATUS 35167754SmsmithAcpiDsMethodDataGetEntry ( 35267754Smsmith UINT32 Type, 35367754Smsmith UINT32 Index, 35467754Smsmith ACPI_WALK_STATE *WalkState, 35567754Smsmith ACPI_OPERAND_OBJECT ***Entry) 35667754Smsmith{ 35767754Smsmith 35867754Smsmith FUNCTION_TRACE_U32 ("DsMethodDataGetEntry", Index); 35967754Smsmith 36067754Smsmith 36167754Smsmith /* 36267754Smsmith * Get the requested object. 36367754Smsmith * The stack "Type" is either a LocalVariable or an Argument 36467754Smsmith */ 36567754Smsmith 36667754Smsmith switch (Type) 36767754Smsmith { 36867754Smsmith 36967754Smsmith case MTH_TYPE_LOCAL: 37067754Smsmith 37167754Smsmith if (Index > MTH_MAX_LOCAL) 37267754Smsmith { 37367754Smsmith DEBUG_PRINT (ACPI_ERROR, 37467754Smsmith ("DsMethodDataGetEntry: LocalVar index %d is invalid (max %d)\n", 37567754Smsmith Index, MTH_MAX_LOCAL)); 37667754Smsmith return_ACPI_STATUS (AE_BAD_PARAMETER); 37767754Smsmith } 37867754Smsmith 37967754Smsmith *Entry = 38067754Smsmith (ACPI_OPERAND_OBJECT **) &WalkState->LocalVariables[Index].Object; 38167754Smsmith break; 38267754Smsmith 38367754Smsmith 38467754Smsmith case MTH_TYPE_ARG: 38567754Smsmith 38667754Smsmith if (Index > MTH_MAX_ARG) 38767754Smsmith { 38867754Smsmith DEBUG_PRINT (ACPI_ERROR, 38967754Smsmith ("DsMethodDataGetEntry: Argument index %d is invalid (max %d)\n", 39067754Smsmith Index, MTH_MAX_ARG)); 39167754Smsmith return_ACPI_STATUS (AE_BAD_PARAMETER); 39267754Smsmith } 39367754Smsmith 39467754Smsmith *Entry = 39567754Smsmith (ACPI_OPERAND_OBJECT **) &WalkState->Arguments[Index].Object; 39667754Smsmith break; 39767754Smsmith 39867754Smsmith 39967754Smsmith default: 40067754Smsmith DEBUG_PRINT (ACPI_ERROR, 40167754Smsmith ("DsMethodDataGetEntry: Stack type %d is invalid\n", 40267754Smsmith Type)); 40367754Smsmith return_ACPI_STATUS (AE_BAD_PARAMETER); 40467754Smsmith } 40567754Smsmith 40667754Smsmith 40767754Smsmith return_ACPI_STATUS (AE_OK); 40867754Smsmith} 40967754Smsmith 41067754Smsmith 41167754Smsmith/******************************************************************************* 41267754Smsmith * 41367754Smsmith * FUNCTION: AcpiDsMethodDataSetEntry 41467754Smsmith * 41567754Smsmith * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG 41667754Smsmith * Index - Which localVar or argument to get 41767754Smsmith * Object - Object to be inserted into the stack entry 41867754Smsmith * 41967754Smsmith * RETURN: Status 42067754Smsmith * 42167754Smsmith * DESCRIPTION: Insert an object onto the method stack at entry Type:Index. 42267754Smsmith * 42367754Smsmith ******************************************************************************/ 42467754Smsmith 42567754SmsmithACPI_STATUS 42667754SmsmithAcpiDsMethodDataSetEntry ( 42767754Smsmith UINT32 Type, 42867754Smsmith UINT32 Index, 42967754Smsmith ACPI_OPERAND_OBJECT *Object, 43067754Smsmith ACPI_WALK_STATE *WalkState) 43167754Smsmith{ 43267754Smsmith ACPI_STATUS Status; 43367754Smsmith ACPI_OPERAND_OBJECT **Entry; 43467754Smsmith 43567754Smsmith 43667754Smsmith FUNCTION_TRACE ("DsMethodDataSetEntry"); 43767754Smsmith 43867754Smsmith /* Get a pointer to the stack entry to set */ 43967754Smsmith 44067754Smsmith Status = AcpiDsMethodDataGetEntry (Type, Index, WalkState, &Entry); 44167754Smsmith if (ACPI_FAILURE (Status)) 44267754Smsmith { 44367754Smsmith return_ACPI_STATUS (Status); 44467754Smsmith } 44567754Smsmith 44667754Smsmith /* Increment ref count so object can't be deleted while installed */ 44767754Smsmith 44867754Smsmith AcpiCmAddReference (Object); 44967754Smsmith 45067754Smsmith /* Install the object into the stack entry */ 45167754Smsmith 45267754Smsmith *Entry = Object; 45367754Smsmith 45467754Smsmith return_ACPI_STATUS (AE_OK); 45567754Smsmith} 45667754Smsmith 45767754Smsmith 45867754Smsmith/******************************************************************************* 45967754Smsmith * 46067754Smsmith * FUNCTION: AcpiDsMethodDataGetType 46167754Smsmith * 46267754Smsmith * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG 46367754Smsmith * Index - Which localVar or argument whose type 46467754Smsmith * to get 46567754Smsmith * 46667754Smsmith * RETURN: Data type of selected Arg or Local 46767754Smsmith * Used only in ExecMonadic2()/TypeOp. 46867754Smsmith * 46967754Smsmith ******************************************************************************/ 47067754Smsmith 47167754SmsmithOBJECT_TYPE_INTERNAL 47267754SmsmithAcpiDsMethodDataGetType ( 47367754Smsmith UINT32 Type, 47467754Smsmith UINT32 Index, 47567754Smsmith ACPI_WALK_STATE *WalkState) 47667754Smsmith{ 47767754Smsmith ACPI_STATUS Status; 47867754Smsmith ACPI_OPERAND_OBJECT **Entry; 47967754Smsmith ACPI_OPERAND_OBJECT *Object; 48067754Smsmith 48167754Smsmith 48267754Smsmith FUNCTION_TRACE ("DsMethodDataGetType"); 48367754Smsmith 48467754Smsmith 48567754Smsmith /* Get a pointer to the requested stack entry */ 48667754Smsmith 48767754Smsmith Status = AcpiDsMethodDataGetEntry (Type, Index, WalkState, &Entry); 48867754Smsmith if (ACPI_FAILURE (Status)) 48967754Smsmith { 49067754Smsmith return_VALUE ((ACPI_TYPE_NOT_FOUND)); 49167754Smsmith } 49267754Smsmith 49367754Smsmith /* Get the object from the method stack */ 49467754Smsmith 49567754Smsmith Object = *Entry; 49667754Smsmith 49767754Smsmith /* Get the object type */ 49867754Smsmith 49967754Smsmith if (!Object) 50067754Smsmith { 50167754Smsmith /* Any == 0 => "uninitialized" -- see spec 15.2.3.5.2.28 */ 50267754Smsmith return_VALUE (ACPI_TYPE_ANY); 50367754Smsmith } 50467754Smsmith 50567754Smsmith return_VALUE (Object->Common.Type); 50667754Smsmith} 50767754Smsmith 50867754Smsmith 50967754Smsmith/******************************************************************************* 51067754Smsmith * 51167754Smsmith * FUNCTION: AcpiDsMethodDataGetNte 51267754Smsmith * 51367754Smsmith * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG 51467754Smsmith * Index - Which localVar or argument whose type 51567754Smsmith * to get 51667754Smsmith * 51767754Smsmith * RETURN: Get the Node associated with a local or arg. 51867754Smsmith * 51967754Smsmith ******************************************************************************/ 52067754Smsmith 52167754SmsmithACPI_NAMESPACE_NODE * 52267754SmsmithAcpiDsMethodDataGetNte ( 52367754Smsmith UINT32 Type, 52467754Smsmith UINT32 Index, 52567754Smsmith ACPI_WALK_STATE *WalkState) 52667754Smsmith{ 52767754Smsmith ACPI_NAMESPACE_NODE *Node = NULL; 52867754Smsmith 52967754Smsmith 53067754Smsmith FUNCTION_TRACE ("DsMethodDataGetNte"); 53167754Smsmith 53267754Smsmith 53367754Smsmith switch (Type) 53467754Smsmith { 53567754Smsmith 53667754Smsmith case MTH_TYPE_LOCAL: 53767754Smsmith 53867754Smsmith if (Index > MTH_MAX_LOCAL) 53967754Smsmith { 54067754Smsmith DEBUG_PRINT (ACPI_ERROR, 54167754Smsmith ("DsMethodDataGetEntry: LocalVar index %d is invalid (max %d)\n", 54267754Smsmith Index, MTH_MAX_LOCAL)); 54367754Smsmith return_PTR (Node); 54467754Smsmith } 54567754Smsmith 54667754Smsmith Node = &WalkState->LocalVariables[Index]; 54767754Smsmith break; 54867754Smsmith 54967754Smsmith 55067754Smsmith case MTH_TYPE_ARG: 55167754Smsmith 55267754Smsmith if (Index > MTH_MAX_ARG) 55367754Smsmith { 55467754Smsmith DEBUG_PRINT (ACPI_ERROR, 55567754Smsmith ("DsMethodDataGetEntry: Argument index %d is invalid (max %d)\n", 55667754Smsmith Index, MTH_MAX_ARG)); 55767754Smsmith return_PTR (Node); 55867754Smsmith } 55967754Smsmith 56067754Smsmith Node = &WalkState->Arguments[Index]; 56167754Smsmith break; 56267754Smsmith 56367754Smsmith 56467754Smsmith default: 56567754Smsmith DEBUG_PRINT (ACPI_ERROR, 56667754Smsmith ("DsMethodDataGetEntry: Stack type %d is invalid\n", 56767754Smsmith Type)); 56867754Smsmith break; 56967754Smsmith } 57067754Smsmith 57167754Smsmith 57267754Smsmith return_PTR (Node); 57367754Smsmith} 57467754Smsmith 57567754Smsmith 57667754Smsmith/******************************************************************************* 57767754Smsmith * 57867754Smsmith * FUNCTION: AcpiDsMethodDataGetValue 57967754Smsmith * 58067754Smsmith * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG 58167754Smsmith * Index - Which localVar or argument to get 58267754Smsmith * *DestDesc - Descriptor into which selected Arg 58367754Smsmith * or Local value should be copied 58467754Smsmith * 58567754Smsmith * RETURN: Status 58667754Smsmith * 58767754Smsmith * DESCRIPTION: Retrieve value of selected Arg or Local from the method frame 58867754Smsmith * at the current top of the method stack. 58967754Smsmith * Used only in AcpiAmlResolveToValue(). 59067754Smsmith * 59167754Smsmith ******************************************************************************/ 59267754Smsmith 59367754SmsmithACPI_STATUS 59467754SmsmithAcpiDsMethodDataGetValue ( 59567754Smsmith UINT32 Type, 59667754Smsmith UINT32 Index, 59767754Smsmith ACPI_WALK_STATE *WalkState, 59867754Smsmith ACPI_OPERAND_OBJECT **DestDesc) 59967754Smsmith{ 60067754Smsmith ACPI_STATUS Status; 60167754Smsmith ACPI_OPERAND_OBJECT **Entry; 60267754Smsmith ACPI_OPERAND_OBJECT *Object; 60367754Smsmith 60467754Smsmith 60567754Smsmith FUNCTION_TRACE ("DsMethodDataGetValue"); 60667754Smsmith 60767754Smsmith 60867754Smsmith /* Validate the object descriptor */ 60967754Smsmith 61067754Smsmith if (!DestDesc) 61167754Smsmith { 61267754Smsmith DEBUG_PRINT (ACPI_ERROR, 61367754Smsmith ("DsMethodDataGetValue: NULL object descriptor pointer\n")); 61467754Smsmith return_ACPI_STATUS (AE_BAD_PARAMETER); 61567754Smsmith } 61667754Smsmith 61767754Smsmith 61867754Smsmith /* Get a pointer to the requested method stack entry */ 61967754Smsmith 62067754Smsmith Status = AcpiDsMethodDataGetEntry (Type, Index, WalkState, &Entry); 62167754Smsmith if (ACPI_FAILURE (Status)) 62267754Smsmith { 62367754Smsmith return_ACPI_STATUS (Status); 62467754Smsmith } 62567754Smsmith 62667754Smsmith /* Get the object from the method stack */ 62767754Smsmith 62867754Smsmith Object = *Entry; 62967754Smsmith 63067754Smsmith 63167754Smsmith /* Examine the returned object, it must be valid. */ 63267754Smsmith 63367754Smsmith if (!Object) 63467754Smsmith { 63567754Smsmith /* 63667754Smsmith * Index points to uninitialized object stack value. 63767754Smsmith * This means that either 1) The expected argument was 63867754Smsmith * not passed to the method, or 2) A local variable 63967754Smsmith * was referenced by the method (via the ASL) 64067754Smsmith * before it was initialized. Either case is an error. 64167754Smsmith */ 64267754Smsmith 64367754Smsmith switch (Type) 64467754Smsmith { 64567754Smsmith case MTH_TYPE_ARG: 64667754Smsmith DEBUG_PRINT (ACPI_ERROR, 64769746Smsmith ("DsMethodDataGetValue: Uninitialized Arg[%d] at entry %p\n", 64867754Smsmith Index, Entry)); 64967754Smsmith return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG); 65067754Smsmith break; 65167754Smsmith 65267754Smsmith case MTH_TYPE_LOCAL: 65367754Smsmith DEBUG_PRINT (ACPI_ERROR, 65469746Smsmith ("DsMethodDataGetValue: Uninitialized Local[%d] at entry %p\n", 65567754Smsmith Index, Entry)); 65667754Smsmith return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL); 65767754Smsmith break; 65867754Smsmith } 65967754Smsmith } 66067754Smsmith 66167754Smsmith 66267754Smsmith /* 66367754Smsmith * Index points to initialized and valid object stack value. 66467754Smsmith * Return an additional reference to the object 66567754Smsmith */ 66667754Smsmith 66767754Smsmith *DestDesc = Object; 66867754Smsmith AcpiCmAddReference (Object); 66967754Smsmith 67067754Smsmith return_ACPI_STATUS (AE_OK); 67167754Smsmith} 67267754Smsmith 67367754Smsmith 67467754Smsmith/******************************************************************************* 67567754Smsmith * 67667754Smsmith * FUNCTION: AcpiDsMethodDataDeleteValue 67767754Smsmith * 67867754Smsmith * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG 67967754Smsmith * Index - Which localVar or argument to delete 68067754Smsmith * 68167754Smsmith * RETURN: Status 68267754Smsmith * 68367754Smsmith * DESCRIPTION: Delete the entry at Type:Index on the method stack. Inserts 68467754Smsmith * a null into the stack slot after the object is deleted. 68567754Smsmith * 68667754Smsmith ******************************************************************************/ 68767754Smsmith 68867754SmsmithACPI_STATUS 68967754SmsmithAcpiDsMethodDataDeleteValue ( 69067754Smsmith UINT32 Type, 69167754Smsmith UINT32 Index, 69267754Smsmith ACPI_WALK_STATE *WalkState) 69367754Smsmith{ 69467754Smsmith ACPI_STATUS Status; 69567754Smsmith ACPI_OPERAND_OBJECT **Entry; 69667754Smsmith ACPI_OPERAND_OBJECT *Object; 69767754Smsmith 69867754Smsmith 69967754Smsmith FUNCTION_TRACE ("DsMethodDataDeleteValue"); 70067754Smsmith 70167754Smsmith 70267754Smsmith /* Get a pointer to the requested entry */ 70367754Smsmith 70467754Smsmith Status = AcpiDsMethodDataGetEntry (Type, Index, WalkState, &Entry); 70567754Smsmith if (ACPI_FAILURE (Status)) 70667754Smsmith { 70767754Smsmith return_ACPI_STATUS (Status); 70867754Smsmith } 70967754Smsmith 71067754Smsmith /* Get the current entry in this slot k */ 71167754Smsmith 71267754Smsmith Object = *Entry; 71367754Smsmith 71467754Smsmith /* 71567754Smsmith * Undefine the Arg or Local by setting its descriptor 71667754Smsmith * pointer to NULL. Locals/Args can contain both 71767754Smsmith * ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs 71867754Smsmith */ 71967754Smsmith *Entry = NULL; 72067754Smsmith 72167754Smsmith 72267754Smsmith if ((Object) && 72367754Smsmith (VALID_DESCRIPTOR_TYPE (Object, ACPI_DESC_TYPE_INTERNAL))) 72467754Smsmith { 72567754Smsmith /* 72667754Smsmith * There is a valid object in this slot 72767754Smsmith * Decrement the reference count by one to balance the 72867754Smsmith * increment when the object was stored in the slot. 72967754Smsmith */ 73067754Smsmith 73167754Smsmith AcpiCmRemoveReference (Object); 73267754Smsmith } 73367754Smsmith 73467754Smsmith 73567754Smsmith return_ACPI_STATUS (AE_OK); 73667754Smsmith} 73767754Smsmith 73867754Smsmith 73967754Smsmith/******************************************************************************* 74067754Smsmith * 74167754Smsmith * FUNCTION: AcpiDsMethodDataSetValue 74267754Smsmith * 74367754Smsmith * PARAMETERS: Type - Either MTH_TYPE_LOCAL or MTH_TYPE_ARG 74467754Smsmith * Index - Which localVar or argument to set 74567754Smsmith * *SrcDesc - Value to be stored 74667754Smsmith * *DestDesc - Descriptor into which *SrcDesc 74767754Smsmith * can be copied, or NULL if one must 74867754Smsmith * be allocated for the purpose. If 74967754Smsmith * provided, this descriptor will be 75067754Smsmith * used for the new value. 75167754Smsmith * 75267754Smsmith * RETURN: Status 75367754Smsmith * 75467754Smsmith * DESCRIPTION: Store a value in an Arg or Local. The SrcDesc is installed 75567754Smsmith * as the new value for the Arg or Local and the reference count 75667754Smsmith * is incremented. 75767754Smsmith * 75867754Smsmith ******************************************************************************/ 75967754Smsmith 76067754SmsmithACPI_STATUS 76167754SmsmithAcpiDsMethodDataSetValue ( 76267754Smsmith UINT32 Type, 76367754Smsmith UINT32 Index, 76467754Smsmith ACPI_OPERAND_OBJECT *SrcDesc, 76567754Smsmith ACPI_WALK_STATE *WalkState) 76667754Smsmith{ 76767754Smsmith ACPI_STATUS Status; 76867754Smsmith ACPI_OPERAND_OBJECT **Entry; 76967754Smsmith 77067754Smsmith 77167754Smsmith FUNCTION_TRACE ("DsMethodDataSetValue"); 77267754Smsmith DEBUG_PRINT (TRACE_EXEC, 77367754Smsmith ("DsMethodDataSetValue: Type=%d Idx=%d Obj=%p\n", 77467754Smsmith Type, Index, SrcDesc)); 77567754Smsmith 77667754Smsmith 77767754Smsmith /* Parameter validation */ 77867754Smsmith 77967754Smsmith if (!SrcDesc) 78067754Smsmith { 78167754Smsmith return_ACPI_STATUS (AE_BAD_PARAMETER); 78267754Smsmith } 78367754Smsmith 78467754Smsmith 78567754Smsmith /* Get a pointer to the requested method stack entry */ 78667754Smsmith 78767754Smsmith Status = AcpiDsMethodDataGetEntry (Type, Index, WalkState, &Entry); 78867754Smsmith if (ACPI_FAILURE (Status)) 78967754Smsmith { 79067754Smsmith goto Cleanup; 79167754Smsmith } 79267754Smsmith 79367754Smsmith if (*Entry == SrcDesc) 79467754Smsmith { 79567754Smsmith DEBUG_PRINT (TRACE_EXEC, 79667754Smsmith ("DsMethodDataSetValue: Obj=%p already installed!\n", 79767754Smsmith SrcDesc)); 79867754Smsmith goto Cleanup; 79967754Smsmith } 80067754Smsmith 80167754Smsmith 80267754Smsmith /* 80367754Smsmith * If there is an object already in this slot, we either 80467754Smsmith * have to delete it, or if this is an argument and there 80567754Smsmith * is an object reference stored there, we have to do 80667754Smsmith * an indirect store! 80767754Smsmith */ 80867754Smsmith 80967754Smsmith if (*Entry) 81067754Smsmith { 81167754Smsmith /* 81267754Smsmith * Check for an indirect store if an argument 81367754Smsmith * contains an object reference (stored as an Node). 81467754Smsmith * We don't allow this automatic dereferencing for 81567754Smsmith * locals, since a store to a local should overwrite 81667754Smsmith * anything there, including an object reference. 81767754Smsmith * 81867754Smsmith * If both Arg0 and Local0 contain RefOf (Local4): 81967754Smsmith * 82067754Smsmith * Store (1, Arg0) - Causes indirect store to local4 82167754Smsmith * Store (1, Local0) - Stores 1 in local0, overwriting 82267754Smsmith * the reference to local4 82367754Smsmith * Store (1, DeRefof (Local0)) - Causes indirect store to local4 82467754Smsmith * 82567754Smsmith * Weird, but true. 82667754Smsmith */ 82767754Smsmith 82867754Smsmith if ((Type == MTH_TYPE_ARG) && 82967754Smsmith (VALID_DESCRIPTOR_TYPE (*Entry, ACPI_DESC_TYPE_NAMED))) 83067754Smsmith { 83167754Smsmith DEBUG_PRINT (TRACE_EXEC, 83267754Smsmith ("DsMethodDataSetValue: Arg (%p) is an ObjRef(Node), storing in %p\n", 83367754Smsmith SrcDesc, *Entry)); 83467754Smsmith 83567754Smsmith /* Detach an existing object from the Node */ 83667754Smsmith 83767754Smsmith AcpiNsDetachObject ((ACPI_NAMESPACE_NODE *) *Entry); 83867754Smsmith 83967754Smsmith /* 84067754Smsmith * Store this object into the Node 84167754Smsmith * (do the indirect store) 84267754Smsmith */ 84367754Smsmith 84467754Smsmith Status = AcpiNsAttachObject ((ACPI_NAMESPACE_NODE *) *Entry, SrcDesc, 84567754Smsmith SrcDesc->Common.Type); 84667754Smsmith return_ACPI_STATUS (Status); 84767754Smsmith } 84867754Smsmith 84967754Smsmith 85067754Smsmith /* 85167754Smsmith * Otherwise, just delete the existing object 85267754Smsmith * before storing the new one 85367754Smsmith */ 85467754Smsmith 85567754Smsmith AcpiDsMethodDataDeleteValue (Type, Index, WalkState); 85667754Smsmith } 85767754Smsmith 85867754Smsmith 85967754Smsmith /* 86067754Smsmith * Install the ObjStack descriptor (*SrcDesc) into 86167754Smsmith * the descriptor for the Arg or Local. 86267754Smsmith * Install the new object in the stack entry 86367754Smsmith * (increments the object reference count by one) 86467754Smsmith */ 86567754Smsmith 86667754Smsmith Status = AcpiDsMethodDataSetEntry (Type, Index, SrcDesc, WalkState); 86767754Smsmith if (ACPI_FAILURE (Status)) 86867754Smsmith { 86967754Smsmith goto Cleanup; 87067754Smsmith } 87167754Smsmith 87267754Smsmith /* Normal exit */ 87367754Smsmith 87467754Smsmith return_ACPI_STATUS (AE_OK); 87567754Smsmith 87667754Smsmith 87767754Smsmith /* Error exit */ 87867754Smsmith 87967754SmsmithCleanup: 88067754Smsmith 88167754Smsmith return_ACPI_STATUS (Status); 88267754Smsmith} 88367754Smsmith 884