| 0,0 → 1,974 |
|---|
| /****************************************************************************** |
| * |
| * Module Name: dswload - Dispatcher namespace load callbacks |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp. |
| * All rights reserved. |
| * |
| * 2. License |
| * |
| * 2.1. This is your license from Intel Corp. under its intellectual property |
| * rights. You may have additional license terms from the party that provided |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * offer to sell, and import the Covered Code and derivative works thereof |
| * solely to the minimum extent necessary to exercise the above copyright |
| * license, and in no event shall the patent license extend to any additions |
| * to or modifications of the Original Intel Code. No other license or right |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification with rights to further distribute source must include |
| * the above Copyright Notice, the above License, this list of Conditions, |
| * and the following Disclaimer and Export Compliance provision. In addition, |
| * Licensee must cause all Covered Code to which Licensee contributes to |
| * contain a file documenting the changes Licensee made to create that Covered |
| * Code and the date of any change. Licensee must include in that file the |
| * documentation of any changes made by any predecessor Licensee. Licensee |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * Redistribution of source code of any substantial portion of the Covered |
| * Code or modification without rights to further distribute source must |
| * include the following Disclaimer and Export Compliance provision in the |
| * documentation and/or other materials provided with distribution. In |
| * addition, Licensee may not authorize further sublicense of source of any |
| * portion of the Covered Code, and must include terms to the effect that the |
| * license from Licensee to its licensee is limited to the intellectual |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 4. Disclaimer and Export Compliance |
| * |
| * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
| * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
| * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
| * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
| * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
| * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
| * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
| * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
| * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
| * LIMITED REMEDY. |
| * |
| * 4.3. Licensee shall not export, either directly or indirectly, any of this |
| * software or system incorporating such software without first obtaining any |
| * required license or other approval from the U. S. Department of Commerce or |
| * any other agency or department of the United States Government. In the |
| * event Licensee exports any such software from the United States or |
| * re-exports any such software from a foreign destination, Licensee shall |
| * ensure that the distribution and export/re-export of the software is in |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| #define __ASLLOAD_C__ |
| |
| #include "aslcompiler.h" |
| #include "amlcode.h" |
| #include "acdispat.h" |
| #include "acnamesp.h" |
| |
| #include "aslcompiler.y.h" |
| |
| #define _COMPONENT ACPI_COMPILER |
| ACPI_MODULE_NAME ("aslload") |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| LdLoadFieldElements ( |
| ACPI_PARSE_OBJECT *Op, |
| ACPI_WALK_STATE *WalkState); |
| |
| static ACPI_STATUS |
| LdLoadResourceElements ( |
| ACPI_PARSE_OBJECT *Op, |
| ACPI_WALK_STATE *WalkState); |
| |
| static ACPI_STATUS |
| LdNamespace1Begin ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context); |
| |
| static ACPI_STATUS |
| LdNamespace2Begin ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context); |
| |
| static ACPI_STATUS |
| LdCommonNamespaceEnd ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LdLoadNamespace |
| * |
| * PARAMETERS: RootOp - Root of the parse tree |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Perform a walk of the parse tree that in turn loads all of the |
| * named ASL/AML objects into the namespace. The namespace is |
| * constructed in order to resolve named references and references |
| * to named fields within resource templates/descriptors. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| LdLoadNamespace ( |
| ACPI_PARSE_OBJECT *RootOp) |
| { |
| ACPI_WALK_STATE *WalkState; |
| |
| |
| DbgPrint (ASL_DEBUG_OUTPUT, "\nCreating namespace\n\n"); |
| |
| /* Create a new walk state */ |
| |
| WalkState = AcpiDsCreateWalkState (0, NULL, NULL, NULL); |
| if (!WalkState) |
| { |
| return AE_NO_MEMORY; |
| } |
| |
| /* Walk the entire parse tree, first pass */ |
| |
| TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace1Begin, |
| LdCommonNamespaceEnd, WalkState); |
| |
| /* Second pass to handle forward references */ |
| |
| TrWalkParseTree (RootOp, ASL_WALK_VISIT_TWICE, LdNamespace2Begin, |
| LdCommonNamespaceEnd, WalkState); |
| |
| /* Dump the namespace if debug is enabled */ |
| |
| AcpiNsDumpTables (ACPI_NS_ALL, ACPI_UINT32_MAX); |
| return AE_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LdLoadFieldElements |
| * |
| * PARAMETERS: Op - Parent node (Field) |
| * WalkState - Current walk state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enter the named elements of the field (children of the parent) |
| * into the namespace. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| LdLoadFieldElements ( |
| ACPI_PARSE_OBJECT *Op, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_PARSE_OBJECT *Child = NULL; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_STATUS Status; |
| |
| |
| /* Get the first named field element */ |
| |
| switch (Op->Asl.AmlOpcode) |
| { |
| case AML_BANK_FIELD_OP: |
| |
| Child = UtGetArg (Op, 6); |
| break; |
| |
| case AML_INDEX_FIELD_OP: |
| |
| Child = UtGetArg (Op, 5); |
| break; |
| |
| case AML_FIELD_OP: |
| |
| Child = UtGetArg (Op, 4); |
| break; |
| |
| default: |
| /* No other opcodes should arrive here */ |
| return (AE_BAD_PARAMETER); |
| } |
| |
| /* Enter all elements into the namespace */ |
| |
| while (Child) |
| { |
| switch (Child->Asl.AmlOpcode) |
| { |
| case AML_INT_RESERVEDFIELD_OP: |
| case AML_INT_ACCESSFIELD_OP: |
| |
| break; |
| |
| default: |
| |
| Status = AcpiNsLookup (WalkState->ScopeInfo, |
| Child->Asl.Value.String, |
| ACPI_TYPE_LOCAL_REGION_FIELD, |
| ACPI_IMODE_LOAD_PASS1, |
| ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE | |
| ACPI_NS_ERROR_IF_FOUND, |
| NULL, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| if (Status != AE_ALREADY_EXISTS) |
| { |
| AslError (ASL_ERROR, ASL_MSG_CORE_EXCEPTION, Child, |
| Child->Asl.Value.String); |
| return (Status); |
| } |
| |
| /* |
| * The name already exists in this scope |
| * But continue processing the elements |
| */ |
| AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Child, |
| Child->Asl.Value.String); |
| } |
| else |
| { |
| Child->Asl.Node = Node; |
| Node->Op = Child; |
| } |
| break; |
| } |
| Child = Child->Asl.Next; |
| } |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LdLoadResourceElements |
| * |
| * PARAMETERS: Op - Parent node (Resource Descriptor) |
| * WalkState - Current walk state |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Enter the named elements of the resource descriptor (children |
| * of the parent) into the namespace. |
| * |
| * NOTE: In the real AML namespace, these named elements never exist. But |
| * we simply use the namespace here as a symbol table so we can look |
| * them up as they are referenced. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| LdLoadResourceElements ( |
| ACPI_PARSE_OBJECT *Op, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_PARSE_OBJECT *InitializerOp = NULL; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_STATUS Status; |
| |
| |
| /* |
| * Enter the resource name into the namespace. Name must not already exist. |
| * This opens a scope, so later field names are guaranteed to be new/unique. |
| */ |
| Status = AcpiNsLookup (WalkState->ScopeInfo, Op->Asl.Namepath, |
| ACPI_TYPE_LOCAL_RESOURCE, ACPI_IMODE_LOAD_PASS1, |
| ACPI_NS_NO_UPSEARCH | ACPI_NS_ERROR_IF_FOUND, |
| WalkState, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| if (Status == AE_ALREADY_EXISTS) |
| { |
| /* Actual node causing the error was saved in ParentMethod */ |
| |
| AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, |
| (ACPI_PARSE_OBJECT *) Op->Asl.ParentMethod, Op->Asl.Namepath); |
| return (AE_OK); |
| } |
| return (Status); |
| } |
| |
| Node->Value = (UINT32) Op->Asl.Value.Integer; |
| Node->Op = Op; |
| Op->Asl.Node = Node; |
| |
| /* |
| * Now enter the predefined fields, for easy lookup when referenced |
| * by the source ASL |
| */ |
| InitializerOp = ASL_GET_CHILD_NODE (Op); |
| while (InitializerOp) |
| { |
| |
| if (InitializerOp->Asl.ExternalName) |
| { |
| Status = AcpiNsLookup (WalkState->ScopeInfo, |
| InitializerOp->Asl.ExternalName, |
| ACPI_TYPE_LOCAL_RESOURCE_FIELD, |
| ACPI_IMODE_LOAD_PASS1, |
| ACPI_NS_NO_UPSEARCH | ACPI_NS_DONT_OPEN_SCOPE, |
| NULL, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| /* |
| * Store the field offset in the namespace node so it |
| * can be used when the field is referenced |
| */ |
| Node->Value = (UINT32) InitializerOp->Asl.Value.Integer; |
| InitializerOp->Asl.Node = Node; |
| Node->Op = InitializerOp; |
| |
| /* Pass thru the field type (Bitfield or Bytefield) */ |
| |
| if (InitializerOp->Asl.CompileFlags & NODE_IS_BIT_OFFSET) |
| { |
| Node->Flags |= ANOBJ_IS_BIT_OFFSET; |
| } |
| } |
| InitializerOp = ASL_GET_PEER_NODE (InitializerOp); |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LdNamespace1Begin |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Descending callback used during the parse tree walk. If this |
| * is a named AML opcode, enter into the namespace |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| LdNamespace1Begin ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_STATUS Status; |
| ACPI_OBJECT_TYPE ObjectType; |
| ACPI_OBJECT_TYPE ActualObjectType = ACPI_TYPE_ANY; |
| char *Path; |
| UINT32 Flags = ACPI_NS_NO_UPSEARCH; |
| ACPI_PARSE_OBJECT *Arg; |
| UINT32 i; |
| BOOLEAN ForceNewScope = FALSE; |
| |
| |
| ACPI_FUNCTION_NAME (LdNamespace1Begin); |
| ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n", |
| Op, Op->Asl.ParseOpName)); |
| |
| |
| /* |
| * We are only interested in opcodes that have an associated name |
| * (or multiple names) |
| */ |
| switch (Op->Asl.AmlOpcode) |
| { |
| case AML_BANK_FIELD_OP: |
| case AML_INDEX_FIELD_OP: |
| case AML_FIELD_OP: |
| |
| Status = LdLoadFieldElements (Op, WalkState); |
| return (Status); |
| |
| default: |
| |
| /* All other opcodes go below */ |
| break; |
| } |
| |
| /* Check if this object has already been installed in the namespace */ |
| |
| if (Op->Asl.Node) |
| { |
| return (AE_OK); |
| } |
| |
| Path = Op->Asl.Namepath; |
| if (!Path) |
| { |
| return (AE_OK); |
| } |
| |
| /* Map the raw opcode into an internal object type */ |
| |
| switch (Op->Asl.ParseOpcode) |
| { |
| case PARSEOP_NAME: |
| |
| Arg = Op->Asl.Child; /* Get the NameSeg/NameString node */ |
| Arg = Arg->Asl.Next; /* First peer is the object to be associated with the name */ |
| |
| /* |
| * If this name refers to a ResourceTemplate, we will need to open |
| * a new scope so that the resource subfield names can be entered into |
| * the namespace underneath this name |
| */ |
| if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC) |
| { |
| ForceNewScope = TRUE; |
| } |
| |
| /* Get the data type associated with the named object, not the name itself */ |
| |
| /* Log2 loop to convert from Btype (binary) to Etype (encoded) */ |
| |
| ObjectType = 1; |
| for (i = 1; i < Arg->Asl.AcpiBtype; i *= 2) |
| { |
| ObjectType++; |
| } |
| break; |
| |
| |
| case PARSEOP_EXTERNAL: |
| |
| /* |
| * "External" simply enters a name and type into the namespace. |
| * We must be careful to not open a new scope, however, no matter |
| * what type the external name refers to (e.g., a method) |
| * |
| * first child is name, next child is ObjectType |
| */ |
| ActualObjectType = (UINT8) Op->Asl.Child->Asl.Next->Asl.Value.Integer; |
| ObjectType = ACPI_TYPE_ANY; |
| |
| /* |
| * We will mark every new node along the path as "External". This |
| * allows some or all of the nodes to be created later in the ASL |
| * code. Handles cases like this: |
| * |
| * External (\_SB_.PCI0.ABCD, IntObj) |
| * Scope (_SB_) |
| * { |
| * Device (PCI0) |
| * { |
| * } |
| * } |
| * Method (X) |
| * { |
| * Store (\_SB_.PCI0.ABCD, Local0) |
| * } |
| */ |
| Flags |= ACPI_NS_EXTERNAL; |
| break; |
| |
| case PARSEOP_DEFAULT_ARG: |
| |
| if (Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC) |
| { |
| Status = LdLoadResourceElements (Op, WalkState); |
| return_ACPI_STATUS (Status); |
| } |
| |
| ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); |
| break; |
| |
| |
| case PARSEOP_SCOPE: |
| |
| /* |
| * The name referenced by Scope(Name) must already exist at this point. |
| * In other words, forward references for Scope() are not supported. |
| * The only real reason for this is that the MS interpreter cannot |
| * handle this case. Perhaps someday this case can go away. |
| */ |
| Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, |
| ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
| WalkState, &(Node)); |
| if (ACPI_FAILURE (Status)) |
| { |
| if (Status == AE_NOT_FOUND) |
| { |
| /* The name was not found, go ahead and create it */ |
| |
| Status = AcpiNsLookup (WalkState->ScopeInfo, Path, |
| ACPI_TYPE_LOCAL_SCOPE, |
| ACPI_IMODE_LOAD_PASS1, Flags, |
| WalkState, &(Node)); |
| |
| /* |
| * However, this is an error -- primarily because the MS |
| * interpreter can't handle a forward reference from the |
| * Scope() operator. |
| */ |
| AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, |
| Op->Asl.ExternalName); |
| AslError (ASL_ERROR, ASL_MSG_SCOPE_FWD_REF, Op, |
| Op->Asl.ExternalName); |
| goto FinishNode; |
| } |
| |
| AslCoreSubsystemError (Op, Status, |
| "Failure from namespace lookup", FALSE); |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* We found a node with this name, now check the type */ |
| |
| switch (Node->Type) |
| { |
| case ACPI_TYPE_LOCAL_SCOPE: |
| case ACPI_TYPE_DEVICE: |
| case ACPI_TYPE_POWER: |
| case ACPI_TYPE_PROCESSOR: |
| case ACPI_TYPE_THERMAL: |
| |
| /* These are acceptable types - they all open a new scope */ |
| break; |
| |
| case ACPI_TYPE_INTEGER: |
| case ACPI_TYPE_STRING: |
| case ACPI_TYPE_BUFFER: |
| |
| /* |
| * These types we will allow, but we will change the type. |
| * This enables some existing code of the form: |
| * |
| * Name (DEB, 0) |
| * Scope (DEB) { ... } |
| * |
| * Which is used to workaround the fact that the MS interpreter |
| * does not allow Scope() forward references. |
| */ |
| sprintf (MsgBuffer, "%s [%s], changing type to [Scope]", |
| Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type)); |
| AslError (ASL_REMARK, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer); |
| |
| /* Switch the type to scope, open the new scope */ |
| |
| Node->Type = ACPI_TYPE_LOCAL_SCOPE; |
| Status = AcpiDsScopeStackPush (Node, ACPI_TYPE_LOCAL_SCOPE, |
| WalkState); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| break; |
| |
| default: |
| |
| /* All other types are an error */ |
| |
| sprintf (MsgBuffer, "%s [%s]", Op->Asl.ExternalName, |
| AcpiUtGetTypeName (Node->Type)); |
| AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, MsgBuffer); |
| |
| /* |
| * However, switch the type to be an actual scope so |
| * that compilation can continue without generating a whole |
| * cascade of additional errors. Open the new scope. |
| */ |
| Node->Type = ACPI_TYPE_LOCAL_SCOPE; |
| Status = AcpiDsScopeStackPush (Node, ACPI_TYPE_LOCAL_SCOPE, |
| WalkState); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| break; |
| } |
| |
| Status = AE_OK; |
| goto FinishNode; |
| |
| |
| default: |
| |
| ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); |
| break; |
| } |
| |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Loading name: %s, (%s)\n", |
| Op->Asl.ExternalName, AcpiUtGetTypeName (ObjectType))); |
| |
| /* The name must not already exist */ |
| |
| Flags |= ACPI_NS_ERROR_IF_FOUND; |
| |
| /* |
| * Enter the named type into the internal namespace. We enter the name |
| * as we go downward in the parse tree. Any necessary subobjects that |
| * involve arguments to the opcode must be created as we go back up the |
| * parse tree later. |
| */ |
| Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, |
| ACPI_IMODE_LOAD_PASS1, Flags, WalkState, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| if (Status == AE_ALREADY_EXISTS) |
| { |
| /* The name already exists in this scope */ |
| |
| if (Node->Type == ACPI_TYPE_LOCAL_SCOPE) |
| { |
| /* Allow multiple references to the same scope */ |
| |
| Node->Type = (UINT8) ObjectType; |
| Status = AE_OK; |
| } |
| else if ((Node->Flags & ANOBJ_IS_EXTERNAL) && |
| (Op->Asl.ParseOpcode != PARSEOP_EXTERNAL)) |
| { |
| /* |
| * Allow one create on an object or segment that was |
| * previously declared External |
| */ |
| Node->Flags &= ~ANOBJ_IS_EXTERNAL; |
| Node->Type = (UINT8) ObjectType; |
| |
| /* Just retyped a node, probably will need to open a scope */ |
| |
| if (AcpiNsOpensScope (ObjectType)) |
| { |
| Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| } |
| Status = AE_OK; |
| } |
| else |
| { |
| /* Valid error, object already exists */ |
| |
| AslError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Op, |
| Op->Asl.ExternalName); |
| return_ACPI_STATUS (AE_OK); |
| } |
| } |
| else |
| { |
| AslCoreSubsystemError (Op, Status, |
| "Failure from namespace lookup", FALSE); |
| return_ACPI_STATUS (Status); |
| } |
| } |
| |
| if (ForceNewScope) |
| { |
| Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| } |
| |
| FinishNode: |
| /* |
| * Point the parse node to the new namespace node, and point |
| * the Node back to the original Parse node |
| */ |
| Op->Asl.Node = Node; |
| Node->Op = Op; |
| |
| /* Set the actual data type if appropriate (EXTERNAL term only) */ |
| |
| if (ActualObjectType != ACPI_TYPE_ANY) |
| { |
| Node->Type = (UINT8) ActualObjectType; |
| Node->Value = ASL_EXTERNAL_METHOD; |
| } |
| |
| if (Op->Asl.ParseOpcode == PARSEOP_METHOD) |
| { |
| /* |
| * Get the method argument count from "Extra" and save |
| * it in the namespace node |
| */ |
| Node->Value = (UINT32) Op->Asl.Extra; |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LdNamespace2Begin |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Descending callback used during the pass 2 parse tree walk. |
| * Second pass resolves some forward references. |
| * |
| * Notes: |
| * Currently only needs to handle the Alias operator. |
| * Could be used to allow forward references from the Scope() operator, but |
| * the MS interpreter does not allow this, so this compiler does not either. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| LdNamespace2Begin ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; |
| ACPI_STATUS Status; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_OBJECT_TYPE ObjectType; |
| BOOLEAN ForceNewScope = FALSE; |
| ACPI_PARSE_OBJECT *Arg; |
| char *Path; |
| ACPI_NAMESPACE_NODE *TargetNode; |
| |
| |
| ACPI_FUNCTION_NAME (LdNamespace2Begin); |
| ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op %p [%s]\n", |
| Op, Op->Asl.ParseOpName)); |
| |
| |
| /* Ignore Ops with no namespace node */ |
| |
| Node = Op->Asl.Node; |
| if (!Node) |
| { |
| return (AE_OK); |
| } |
| |
| /* Get the type to determine if we should push the scope */ |
| |
| if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) && |
| (Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC)) |
| { |
| ObjectType = ACPI_TYPE_LOCAL_RESOURCE; |
| } |
| else |
| { |
| ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); |
| } |
| |
| /* Push scope for Resource Templates */ |
| |
| if (Op->Asl.ParseOpcode == PARSEOP_NAME) |
| { |
| if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC) |
| { |
| ForceNewScope = TRUE; |
| } |
| } |
| |
| /* Push the scope stack */ |
| |
| if (ForceNewScope || AcpiNsOpensScope (ObjectType)) |
| { |
| Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| } |
| |
| if (Op->Asl.ParseOpcode == PARSEOP_ALIAS) |
| { |
| /* Complete the alias node by getting and saving the target node */ |
| |
| /* First child is the alias target */ |
| |
| Arg = Op->Asl.Child; |
| |
| /* Get the target pathname */ |
| |
| Path = Arg->Asl.Namepath; |
| if (!Path) |
| { |
| Status = UtInternalizeName (Arg->Asl.ExternalName, &Path); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| } |
| |
| /* Get the NS node associated with the target. It must exist. */ |
| |
| Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, |
| ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, |
| WalkState, &TargetNode); |
| if (ACPI_FAILURE (Status)) |
| { |
| if (Status == AE_NOT_FOUND) |
| { |
| AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, |
| Op->Asl.ExternalName); |
| |
| /* |
| * The name was not found, go ahead and create it. |
| * This prevents more errors later. |
| */ |
| Status = AcpiNsLookup (WalkState->ScopeInfo, Path, |
| ACPI_TYPE_ANY, |
| ACPI_IMODE_LOAD_PASS1, ACPI_NS_NO_UPSEARCH, |
| WalkState, &(Node)); |
| return (AE_OK); |
| } |
| |
| AslCoreSubsystemError (Op, Status, |
| "Failure from namespace lookup", FALSE); |
| return (AE_OK); |
| } |
| |
| /* Save the target node within the alias node */ |
| |
| Node->Object = ACPI_CAST_PTR (ACPI_OPERAND_OBJECT, TargetNode); |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LdCommonNamespaceEnd |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Ascending callback used during the loading of the namespace, |
| * We only need to worry about managing the scope stack here. |
| * |
| ******************************************************************************/ |
| |
| static ACPI_STATUS |
| LdCommonNamespaceEnd ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| ACPI_WALK_STATE *WalkState = (ACPI_WALK_STATE *) Context; |
| ACPI_OBJECT_TYPE ObjectType; |
| BOOLEAN ForceNewScope = FALSE; |
| |
| |
| ACPI_FUNCTION_NAME (LdCommonNamespaceEnd); |
| |
| |
| /* We are only interested in opcodes that have an associated name */ |
| |
| if (!Op->Asl.Namepath) |
| { |
| return (AE_OK); |
| } |
| |
| /* Get the type to determine if we should pop the scope */ |
| |
| if ((Op->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) && |
| (Op->Asl.CompileFlags == NODE_IS_RESOURCE_DESC)) |
| { |
| /* TBD: Merge into AcpiDsMapNamedOpcodeToDataType */ |
| |
| ObjectType = ACPI_TYPE_LOCAL_RESOURCE; |
| } |
| else |
| { |
| ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); |
| } |
| |
| /* Pop scope that was pushed for Resource Templates */ |
| |
| if (Op->Asl.ParseOpcode == PARSEOP_NAME) |
| { |
| if (Op->Asl.CompileFlags & NODE_IS_RESOURCE_DESC) |
| { |
| ForceNewScope = TRUE; |
| } |
| } |
| |
| /* Pop the scope stack */ |
| |
| if (ForceNewScope || AcpiNsOpensScope (ObjectType)) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, |
| "(%s): Popping scope for Op [%s] %p\n", |
| AcpiUtGetTypeName (ObjectType), Op->Asl.ParseOpName, Op)); |
| |
| (void) AcpiDsScopeStackPop (WalkState); |
| } |
| |
| return (AE_OK); |
| } |
| |
| |