| /****************************************************************************** |
| * |
| * Module Name: dswload - Dispatcher namespace load callbacks |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2020, Intel Corp. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include "aslcompiler.h" |
| #include "amlcode.h" |
| #include "acdispat.h" |
| #include "acnamesp.h" |
| #include "acparser.h" |
| #include "aslcompiler.y.h" |
| |
| |
| #define _COMPONENT ACPI_COMPILER |
| ACPI_MODULE_NAME ("aslload") |
| |
| /* Local prototypes */ |
| |
| static ACPI_STATUS |
| LdLoadFieldElements ( |
| UINT32 AmlType, |
| 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); |
| |
| static void |
| LdCheckSpecialNames ( |
| ACPI_NAMESPACE_NODE *Node, |
| ACPI_PARSE_OBJECT *Op); |
| |
| /******************************************************************************* |
| * |
| * 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; |
| |
| |
| /* 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 */ |
| |
| if (AcpiDbgLevel & ACPI_LV_TABLES) |
| { |
| AcpiNsDumpTables (ACPI_NS_ALL, ACPI_UINT32_MAX); |
| } |
| |
| ACPI_FREE (WalkState); |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: LdLoadFieldElements |
| * |
| * PARAMETERS: AmlType - Type to search |
| * 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 ( |
| UINT32 AmlType, |
| ACPI_PARSE_OBJECT *Op, |
| ACPI_WALK_STATE *WalkState) |
| { |
| ACPI_PARSE_OBJECT *Child = NULL; |
| ACPI_PARSE_OBJECT *SourceRegion; |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_STATUS Status; |
| char *ExternalPath; |
| |
| |
| SourceRegion = UtGetArg (Op, 0); |
| if (SourceRegion) |
| { |
| Status = AcpiNsLookup (WalkState->ScopeInfo, |
| SourceRegion->Asl.Value.String, AmlType, ACPI_IMODE_EXECUTE, |
| ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &Node); |
| if (Status == AE_NOT_FOUND) |
| { |
| /* |
| * If the named object is not found, it means that it is either a |
| * forward reference or the named object does not exist. |
| */ |
| SourceRegion->Asl.CompileFlags |= OP_NOT_FOUND_DURING_LOAD; |
| } |
| } |
| |
| /* 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: |
| case AML_INT_CONNECTION_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); |
| } |
| else if (Status == AE_ALREADY_EXISTS && |
| (Node->Flags & ANOBJ_IS_EXTERNAL)) |
| { |
| Node->Type = (UINT8) ACPI_TYPE_LOCAL_REGION_FIELD; |
| Node->Flags &= ~ANOBJ_IS_EXTERNAL; |
| } |
| else |
| { |
| /* |
| * The name already exists in this scope |
| * But continue processing the elements |
| */ |
| ExternalPath = AcpiNsGetNormalizedPathname (Node, TRUE); |
| |
| AslDualParseOpError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Child, |
| ExternalPath, ASL_MSG_FOUND_HERE, Node->Op, |
| ExternalPath); |
| |
| if (ExternalPath) |
| { |
| ACPI_FREE (ExternalPath); |
| } |
| } |
| } |
| 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; |
| char *ExternalPath; |
| |
| |
| /* |
| * 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 */ |
| |
| ExternalPath = AcpiNsGetNormalizedPathname (Node, TRUE); |
| |
| AslDualParseOpError (ASL_ERROR, ASL_MSG_NAME_EXISTS, |
| (ACPI_PARSE_OBJECT *) Op->Asl.ParentMethod, |
| ExternalPath, ASL_MSG_FOUND_HERE, Node->Op, |
| ExternalPath); |
| |
| if (ExternalPath) |
| { |
| ACPI_FREE (ExternalPath); |
| } |
| 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 and length in the namespace node |
| * so it can be used when the field is referenced |
| */ |
| Node->Value = InitializerOp->Asl.Value.Tag.BitOffset; |
| Node->Length = InitializerOp->Asl.Value.Tag.BitLength; |
| InitializerOp->Asl.Node = Node; |
| Node->Op = InitializerOp; |
| } |
| |
| 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_PARSE_OBJECT *MethodOp; |
| 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; |
| const ACPI_OPCODE_INFO *OpInfo; |
| ACPI_PARSE_OBJECT *ParentOp; |
| char *ExternalPath; |
| |
| |
| 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_INDEX_FIELD_OP: |
| |
| Status = LdLoadFieldElements (ACPI_TYPE_LOCAL_REGION_FIELD, Op, WalkState); |
| return (Status); |
| |
| case AML_BANK_FIELD_OP: |
| case AML_FIELD_OP: |
| |
| Status = LdLoadFieldElements (ACPI_TYPE_REGION, Op, WalkState); |
| return (Status); |
| |
| case AML_INT_CONNECTION_OP: |
| |
| if (Op->Asl.Child->Asl.AmlOpcode != AML_INT_NAMEPATH_OP) |
| { |
| break; |
| } |
| |
| Arg = Op->Asl.Child; |
| Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Asl.ExternalName, |
| ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT, |
| WalkState, &Node); |
| if (ACPI_FAILURE (Status)) |
| { |
| break; |
| } |
| |
| break; |
| |
| 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); |
| } |
| |
| /* Check for a possible illegal forward reference */ |
| |
| if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || |
| (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING)) |
| { |
| /* |
| * Op->Asl.Namepath will be NULL for these opcodes. |
| * These opcodes are guaranteed to have a parent. |
| * Examine the parent opcode. |
| */ |
| ParentOp = Op->Asl.Parent; |
| OpInfo = AcpiPsGetOpcodeInfo (ParentOp->Asl.AmlOpcode); |
| |
| /* |
| * Exclude all operators that actually declare a new name: |
| * Name (ABCD, 1) -> Ignore (AML_CLASS_NAMED_OBJECT) |
| * We only want references to named objects: |
| * Store (2, WXYZ) -> Attempt to resolve the name |
| */ |
| if (OpInfo->Class == AML_CLASS_NAMED_OBJECT) |
| { |
| return (AE_OK); |
| } |
| |
| /* |
| * Check if the referenced object exists at this point during |
| * the load: |
| * 1) If it exists, then this cannot be a forward reference. |
| * 2) If it does not exist, it could be a forward reference or |
| * it truly does not exist (and no external declaration). |
| */ |
| Status = AcpiNsLookup (WalkState->ScopeInfo, |
| Op->Asl.Value.Name, ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE, |
| ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, |
| WalkState, &Node); |
| if (Status == AE_NOT_FOUND) |
| { |
| /* |
| * This is either a forward reference or the object truly |
| * does not exist. The two cases can only be differentiated |
| * during the cross-reference stage later. Mark the Op/Name |
| * as not-found for now to indicate the need for further |
| * processing. |
| * |
| * Special case: Allow forward references from elements of |
| * Package objects. This provides compatibility with other |
| * ACPI implementations. To correctly implement this, the |
| * ACPICA table load defers package resolution until the entire |
| * namespace has been loaded. |
| */ |
| if ((ParentOp->Asl.ParseOpcode != PARSEOP_PACKAGE) && |
| (ParentOp->Asl.ParseOpcode != PARSEOP_VAR_PACKAGE)) |
| { |
| Op->Asl.CompileFlags |= OP_NOT_FOUND_DURING_LOAD; |
| } |
| |
| return (AE_OK); |
| } |
| |
| return (Status); |
| } |
| |
| 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 & OP_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 == OP_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); |
| if (ACPI_FAILURE (Status)) |
| { |
| return_ACPI_STATUS (Status); |
| } |
| |
| /* However, this is an error -- operand to Scope must exist */ |
| |
| if (strlen (Op->Asl.ExternalName) == ACPI_NAMESEG_SIZE) |
| { |
| AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, |
| Op->Asl.ExternalName); |
| } |
| else |
| { |
| AslError (ASL_ERROR, ASL_MSG_NAMEPATH_NOT_EXIST, Op, |
| Op->Asl.ExternalName); |
| } |
| |
| goto FinishNode; |
| } |
| |
| AslCoreSubsystemError (Op, Status, |
| "Failure from namespace lookup", FALSE); |
| |
| return_ACPI_STATUS (Status); |
| } |
| else /* Status AE_OK */ |
| { |
| /* |
| * Do not allow references to external scopes from the DSDT. |
| * This is because the DSDT is always loaded first, and the |
| * external reference cannot be resolved -- causing a runtime |
| * error because Scope() must be resolved immediately. |
| * 10/2015. |
| */ |
| if ((Node->Flags & ANOBJ_IS_EXTERNAL) && |
| (ACPI_COMPARE_NAMESEG (AslGbl_TableSignature, "DSDT"))) |
| { |
| /* However, allowed if the reference is within a method */ |
| |
| MethodOp = Op->Asl.Parent; |
| while (MethodOp && |
| (MethodOp->Asl.ParseOpcode != PARSEOP_METHOD)) |
| { |
| MethodOp = MethodOp->Asl.Parent; |
| } |
| |
| if (!MethodOp) |
| { |
| /* Not in a control method, error */ |
| |
| AslError (ASL_ERROR, ASL_MSG_CROSS_TABLE_SCOPE, Op, NULL); |
| } |
| } |
| } |
| |
| /* 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 (AslGbl_MsgBuffer, "%s [%s], changing type to [Scope]", |
| Op->Asl.ExternalName, AcpiUtGetTypeName (Node->Type)); |
| AslError (ASL_REMARK, ASL_MSG_SCOPE_TYPE, Op, AslGbl_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 (AslGbl_MsgBuffer, "%s [%s]", Op->Asl.ExternalName, |
| AcpiUtGetTypeName (Node->Type)); |
| AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, AslGbl_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; |
| |
| /* |
| * For opcodes that enter new names into the namespace, |
| * all prefix NameSegs must exist. |
| */ |
| WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); |
| if (((WalkState->OpInfo->Flags & AML_NAMED) || |
| (WalkState->OpInfo->Flags & AML_CREATE)) && |
| (Op->Asl.AmlOpcode != AML_EXTERNAL_OP)) |
| { |
| Flags |= ACPI_NS_PREFIX_MUST_EXIST; |
| } |
| |
| /* |
| * 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 if (!(Node->Flags & ANOBJ_IS_EXTERNAL) && |
| (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL)) |
| { |
| /* |
| * Allow externals in same scope as the definition of the |
| * actual object. Similar to C. Allows multiple definition |
| * blocks that refer to each other in the same file. |
| */ |
| Status = AE_OK; |
| } |
| else if ((Node->Flags & ANOBJ_IS_EXTERNAL) && |
| (Op->Asl.ParseOpcode == PARSEOP_EXTERNAL) && |
| (ObjectType == ACPI_TYPE_ANY)) |
| { |
| /* Allow update of externals of unknown type. */ |
| |
| if (AcpiNsOpensScope (ActualObjectType)) |
| { |
| Node->Type = (UINT8) ActualObjectType; |
| Status = AE_OK; |
| } |
| else |
| { |
| sprintf (AslGbl_MsgBuffer, "%s [%s]", Op->Asl.ExternalName, |
| AcpiUtGetTypeName (Node->Type)); |
| AslError (ASL_ERROR, ASL_MSG_SCOPE_TYPE, Op, AslGbl_MsgBuffer); |
| return_ACPI_STATUS (AE_OK); |
| } |
| } |
| else |
| { |
| /* Valid error, object already exists */ |
| |
| ExternalPath = AcpiNsGetNormalizedPathname (Node, TRUE); |
| |
| AslDualParseOpError (ASL_ERROR, ASL_MSG_NAME_EXISTS, Op, |
| ExternalPath, ASL_MSG_FOUND_HERE, Node->Op, |
| ExternalPath); |
| |
| if (ExternalPath) |
| { |
| ACPI_FREE (ExternalPath); |
| } |
| return_ACPI_STATUS (AE_OK); |
| } |
| } |
| else if (AE_NOT_FOUND) |
| { |
| /* |
| * One or more prefix NameSegs of the NamePath do not exist |
| * (all of them must exist). Attempt to continue compilation |
| * by setting the current scope to the root. |
| */ |
| Node = AcpiGbl_RootNode; |
| Status = AE_OK; |
| } |
| else |
| { |
| /* Flag all other errors as coming from the ACPICA core */ |
| |
| AslCoreSubsystemError (Op, Status, |
| "Failure from namespace lookup", FALSE); |
| return_ACPI_STATUS (Status); |
| } |
| } |
| |
| /* Check special names like _WAK and _PTS */ |
| |
| LdCheckSpecialNames (Node, Op); |
| |
| 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) |
| * As of 11/19/2019, ASL External() does not support parameter |
| * counts. When an External method is loaded, the parameter count is |
| * unknown setting Node->Value to ASL_EXTERNAL_METHOD_UNKNOWN_PARAMS |
| * indicates that the parameter count for this method is unknown. |
| * This information is used in ASL cross reference to help determine the |
| * parameter count through method calls. |
| */ |
| if (ActualObjectType != ACPI_TYPE_ANY) |
| { |
| Node->Type = (UINT8) ActualObjectType; |
| Node->Value = ASL_EXTERNAL_METHOD_UNKNOWN_PARAMS; |
| } |
| |
| 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: LdCheckSpecialNames |
| * |
| * PARAMETERS: Node - Node that represents the named object |
| * Op - Named object declaring this named object |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Check if certain named objects are declared in the incorrect |
| * scope. Special named objects are listed in |
| * AslGbl_SpecialNamedObjects and can only be declared at the root |
| * scope. _UID inside of a processor declaration must not be a |
| * string. |
| * |
| ******************************************************************************/ |
| |
| static void |
| LdCheckSpecialNames ( |
| ACPI_NAMESPACE_NODE *Node, |
| ACPI_PARSE_OBJECT *Op) |
| { |
| UINT32 i; |
| |
| |
| for (i = 0; i < MAX_SPECIAL_NAMES; i++) |
| { |
| if (ACPI_COMPARE_NAMESEG(Node->Name.Ascii, AslGbl_SpecialNamedObjects[i]) && |
| Node->Parent != AcpiGbl_RootNode) |
| { |
| AslError (ASL_ERROR, ASL_MSG_INVALID_SPECIAL_NAME, Op, Op->Asl.ExternalName); |
| return; |
| } |
| } |
| |
| if (ACPI_COMPARE_NAMESEG (Node->Name.Ascii, "_UID") && |
| Node->Parent->Type == ACPI_TYPE_PROCESSOR && |
| Node->Type == ACPI_TYPE_STRING) |
| { |
| AslError (ASL_ERROR, ASL_MSG_INVALID_PROCESSOR_UID , Op, "found a string"); |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * 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 == OP_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 & OP_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) |
| { |
| /* Standalone NameSeg vs. NamePath */ |
| |
| if (strlen (Arg->Asl.ExternalName) == ACPI_NAMESEG_SIZE) |
| { |
| AslError (ASL_ERROR, ASL_MSG_NOT_FOUND, Op, |
| Arg->Asl.ExternalName); |
| } |
| else |
| { |
| AslError (ASL_ERROR, ASL_MSG_NAMEPATH_NOT_EXIST, Op, |
| Arg->Asl.ExternalName); |
| } |
| |
| #if 0 |
| /* |
| * NOTE: Removed 10/2018 to enhance compiler error reporting. No |
| * regressions seen. |
| */ |
| /* |
| * 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); |
| #endif |
| return (Status); |
| /* Removed: 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 == OP_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 & OP_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); |
| } |
