diff options
Diffstat (limited to 'sys/contrib/dev/acpica/common/adwalk.c')
| -rw-r--r-- | sys/contrib/dev/acpica/common/adwalk.c | 1001 |
1 files changed, 1001 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/common/adwalk.c b/sys/contrib/dev/acpica/common/adwalk.c new file mode 100644 index 0000000..108561c --- /dev/null +++ b/sys/contrib/dev/acpica/common/adwalk.c @@ -0,0 +1,1001 @@ +/****************************************************************************** + * + * Module Name: adwalk - Application-level disassembler parse tree walk routines + * $Revision: 1.6 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2007, 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. + * + *****************************************************************************/ + + +#include <contrib/dev/acpica/acpi.h> +#include <contrib/dev/acpica/acparser.h> +#include <contrib/dev/acpica/amlcode.h> +#include <contrib/dev/acpica/acdebug.h> +#include <contrib/dev/acpica/acdisasm.h> +#include <contrib/dev/acpica/acdispat.h> +#include <contrib/dev/acpica/acnamesp.h> +#include <contrib/dev/acpica/acapps.h> + + +#define _COMPONENT ACPI_TOOLS + ACPI_MODULE_NAME ("adwalk") + +/* + * aslmap - opcode mappings and reserved method names + */ +ACPI_OBJECT_TYPE +AslMapNamedOpcodeToDataType ( + UINT16 Opcode); + +/* Local prototypes */ + +static ACPI_STATUS +AcpiDmFindOrphanDescending ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context); + +static ACPI_STATUS +AcpiDmDumpDescending ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context); + +static ACPI_STATUS +AcpiDmXrefDescendingOp ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context); + +static ACPI_STATUS +AcpiDmCommonAscendingOp ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context); + +static ACPI_STATUS +AcpiDmLoadDescendingOp ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context); + +static UINT32 +AcpiDmInspectPossibleArgs ( + UINT32 CurrentOpArgCount, + UINT32 TargetCount, + ACPI_PARSE_OBJECT *Op); + +static ACPI_STATUS +AcpiDmResourceDescendingOp ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context); + + +/******************************************************************************* + * + * FUNCTION: AcpiDmDumpTree + * + * PARAMETERS: Origin - Starting object + * + * RETURN: None + * + * DESCRIPTION: Parse tree walk to format and output the nodes + * + ******************************************************************************/ + +void +AcpiDmDumpTree ( + ACPI_PARSE_OBJECT *Origin) +{ + ACPI_OP_WALK_INFO Info; + + + if (!Origin) + { + return; + } + + AcpiOsPrintf ("/*\nAML Parse Tree\n\n"); + Info.Flags = 0; + Info.Count = 0; + Info.Level = 0; + Info.WalkState = NULL; + AcpiDmWalkParseTree (Origin, AcpiDmDumpDescending, NULL, &Info); + AcpiOsPrintf ("*/\n\n"); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmFindOrphanMethods + * + * PARAMETERS: Origin - Starting object + * + * RETURN: None + * + * DESCRIPTION: Parse tree walk to find "orphaned" method invocations -- methods + * that are not resolved in the namespace + * + ******************************************************************************/ + +void +AcpiDmFindOrphanMethods ( + ACPI_PARSE_OBJECT *Origin) +{ + ACPI_OP_WALK_INFO Info; + + + if (!Origin) + { + return; + } + + Info.Flags = 0; + Info.Level = 0; + Info.WalkState = NULL; + AcpiDmWalkParseTree (Origin, AcpiDmFindOrphanDescending, NULL, &Info); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmFinishNamespaceLoad + * + * PARAMETERS: ParseTreeRoot - Root of the parse tree + * NamespaceRoot - Root of the internal namespace + * + * RETURN: None + * + * DESCRIPTION: Load all namespace items that are created within control + * methods. Used before namespace cross reference + * + ******************************************************************************/ + +void +AcpiDmFinishNamespaceLoad ( + ACPI_PARSE_OBJECT *ParseTreeRoot, + ACPI_NAMESPACE_NODE *NamespaceRoot) +{ + ACPI_STATUS Status; + ACPI_OP_WALK_INFO Info; + ACPI_WALK_STATE *WalkState; + + + if (!ParseTreeRoot) + { + return; + } + + /* Create and initialize a new walk state */ + + WalkState = AcpiDsCreateWalkState (0, ParseTreeRoot, NULL, NULL); + if (!WalkState) + { + return; + } + + Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, WalkState); + if (ACPI_FAILURE (Status)) + { + return; + } + + Info.Flags = 0; + Info.Level = 0; + Info.WalkState = WalkState; + AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmLoadDescendingOp, + AcpiDmCommonAscendingOp, &Info); + ACPI_FREE (WalkState); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmCrossReferenceNamespace + * + * PARAMETERS: ParseTreeRoot - Root of the parse tree + * NamespaceRoot - Root of the internal namespace + * + * RETURN: None + * + * DESCRIPTION: Cross reference the namespace to create externals + * + ******************************************************************************/ + +void +AcpiDmCrossReferenceNamespace ( + ACPI_PARSE_OBJECT *ParseTreeRoot, + ACPI_NAMESPACE_NODE *NamespaceRoot) +{ + ACPI_STATUS Status; + ACPI_OP_WALK_INFO Info; + ACPI_WALK_STATE *WalkState; + + + if (!ParseTreeRoot) + { + return; + } + + /* Create and initialize a new walk state */ + + WalkState = AcpiDsCreateWalkState (0, ParseTreeRoot, NULL, NULL); + if (!WalkState) + { + return; + } + + Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, WalkState); + if (ACPI_FAILURE (Status)) + { + return; + } + + Info.Flags = 0; + Info.Level = 0; + Info.WalkState = WalkState; + AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmXrefDescendingOp, + AcpiDmCommonAscendingOp, &Info); + ACPI_FREE (WalkState); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmConvertResourceIndexes + * + * PARAMETERS: ParseTreeRoot - Root of the parse tree + * NamespaceRoot - Root of the internal namespace + * + * RETURN: None + * + * DESCRIPTION: Convert fixed-offset references to resource descriptors to + * symbolic references. Should only be called after namespace has + * been cross referenced. + * + ******************************************************************************/ + +void +AcpiDmConvertResourceIndexes ( + ACPI_PARSE_OBJECT *ParseTreeRoot, + ACPI_NAMESPACE_NODE *NamespaceRoot) +{ + ACPI_STATUS Status; + ACPI_OP_WALK_INFO Info; + ACPI_WALK_STATE *WalkState; + + + if (!ParseTreeRoot) + { + return; + } + + /* Create and initialize a new walk state */ + + WalkState = AcpiDsCreateWalkState (0, ParseTreeRoot, NULL, NULL); + if (!WalkState) + { + return; + } + + Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, WalkState); + if (ACPI_FAILURE (Status)) + { + return; + } + + Info.Flags = 0; + Info.Level = 0; + Info.WalkState = WalkState; + AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmResourceDescendingOp, + AcpiDmCommonAscendingOp, &Info); + ACPI_FREE (WalkState); + return; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmDumpDescending + * + * PARAMETERS: ASL_WALK_CALLBACK + * + * RETURN: Status + * + * DESCRIPTION: Format and print contents of one parse Op. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiDmDumpDescending ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context) +{ + ACPI_OP_WALK_INFO *Info = Context; + const ACPI_OPCODE_INFO *OpInfo; + char *Path; + + + if (!Op) + { + return (AE_OK); + } + + OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); + Info->Count++; + + /* Most of the information (count, level, name) here */ + + AcpiOsPrintf ("% 5d [%2.2d] ", Info->Count, Level); + AcpiDmIndent (Level); + AcpiOsPrintf ("%-28s", AcpiPsGetOpcodeName (Op->Common.AmlOpcode)); + + /* Extra info is helpful */ + + switch (Op->Common.AmlOpcode) + { + case AML_BYTE_OP: + case AML_WORD_OP: + case AML_DWORD_OP: + AcpiOsPrintf ("%X", (UINT32) Op->Common.Value.Integer); + break; + + case AML_INT_NAMEPATH_OP: + if (Op->Common.Value.String) + { + AcpiNsExternalizeName (ACPI_UINT32_MAX, Op->Common.Value.String, + NULL, &Path); + AcpiOsPrintf ("%s %p", Path, Op->Common.Node); + ACPI_FREE (Path); + } + else + { + AcpiOsPrintf ("[NULL]"); + } + break; + + case AML_NAME_OP: + case AML_METHOD_OP: + case AML_DEVICE_OP: + case AML_INT_NAMEDFIELD_OP: + AcpiOsPrintf ("%4.4s", &Op->Named.Name); + break; + } + + AcpiOsPrintf ("\n"); + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmFindOrphanDescending + * + * PARAMETERS: ASL_WALK_CALLBACK + * + * RETURN: Status + * + * DESCRIPTION: Check namepath Ops for orphaned method invocations + * + * Note: Experimental. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiDmFindOrphanDescending ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context) +{ + const ACPI_OPCODE_INFO *OpInfo; + ACPI_PARSE_OBJECT *ChildOp; + ACPI_PARSE_OBJECT *NextOp; + ACPI_PARSE_OBJECT *ParentOp; + UINT32 ArgCount; + + + if (!Op) + { + return (AE_OK); + } + + OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); + + switch (Op->Common.AmlOpcode) + { +#ifdef ACPI_UNDER_DEVELOPMENT + case AML_ADD_OP: + ChildOp = Op->Common.Value.Arg; + if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && + !ChildOp->Common.Node) + { + AcpiNsExternalizeName (ACPI_UINT32_MAX, ChildOp->Common.Value.String, + NULL, &Path); + AcpiOsPrintf ("/* %-16s A-NAMEPATH: %s */\n", Op->Common.AmlOpName, Path); + ACPI_FREE (Path); + + NextOp = Op->Common.Next; + if (!NextOp) + { + /* This NamePath has no args, assume it is an integer */ + + AcpiDmAddToExternalList (ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0); + return (AE_OK); + } + + ArgCount = AcpiDmInspectPossibleArgs (3, 1, NextOp); + AcpiOsPrintf ("/* A-CHILDREN: %d Actual %d */\n", ArgCount, AcpiDmCountChildren (Op)); + + if (ArgCount < 1) + { + /* One Arg means this is just a Store(Name,Target) */ + + AcpiDmAddToExternalList (ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0); + return (AE_OK); + } + + AcpiDmAddToExternalList (ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount); + } + break; +#endif + + case AML_STORE_OP: + + ChildOp = Op->Common.Value.Arg; + if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) && + !ChildOp->Common.Node) + { + NextOp = Op->Common.Next; + if (!NextOp) + { + /* This NamePath has no args, assume it is an integer */ + + AcpiDmAddToExternalList (ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0); + return (AE_OK); + } + + ArgCount = AcpiDmInspectPossibleArgs (2, 1, NextOp); + if (ArgCount <= 1) + { + /* One Arg means this is just a Store(Name,Target) */ + + AcpiDmAddToExternalList (ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0); + return (AE_OK); + } + + AcpiDmAddToExternalList (ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount); + } + break; + + case AML_INT_NAMEPATH_OP: + + /* Must examine parent to see if this namepath is an argument */ + + ParentOp = Op->Common.Parent; + OpInfo = AcpiPsGetOpcodeInfo (ParentOp->Common.AmlOpcode); + + if ((OpInfo->Class != AML_CLASS_EXECUTE) && + (OpInfo->Class != AML_CLASS_CREATE) && + (ParentOp->Common.AmlOpcode != AML_INT_METHODCALL_OP) && + !Op->Common.Node) + { + ArgCount = AcpiDmInspectPossibleArgs (0, 0, Op->Common.Next); + + /* + * Check if namepath is a predicate for if/while or lone parameter to + * a return. + */ + if (ArgCount == 0) + { + if (((ParentOp->Common.AmlOpcode == AML_IF_OP) || + (ParentOp->Common.AmlOpcode == AML_WHILE_OP) || + (ParentOp->Common.AmlOpcode == AML_RETURN_OP)) && + + /* And namepath is the first argument */ + (ParentOp->Common.Value.Arg == Op)) + { + AcpiDmAddToExternalList (Op->Common.Value.String, ACPI_TYPE_INTEGER, 0); + break; + } + } + + /* + * This is a standalone namestring (not a parameter to another + * operator) - it *must* be a method invocation, nothing else is + * grammatically possible. + */ + AcpiDmAddToExternalList (Op->Common.Value.String, ACPI_TYPE_METHOD, ArgCount); + + } + break; + } + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmLoadDescendingOp + * + * PARAMETERS: ASL_WALK_CALLBACK + * + * RETURN: Status + * + * DESCRIPTION: Descending handler for namespace control method object load + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiDmLoadDescendingOp ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context) +{ + ACPI_OP_WALK_INFO *Info = Context; + const ACPI_OPCODE_INFO *OpInfo; + ACPI_WALK_STATE *WalkState; + ACPI_OBJECT_TYPE ObjectType; + ACPI_STATUS Status; + char *Path = NULL; + ACPI_PARSE_OBJECT *NextOp; + ACPI_NAMESPACE_NODE *Node; + + + WalkState = Info->WalkState; + OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); + ObjectType = OpInfo->ObjectType; + ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); + + /* Only interested in operators that create new names */ + + if (!(OpInfo->Flags & AML_NAMED) && + !(OpInfo->Flags & AML_CREATE)) + { + goto Exit; + } + + /* Get the NamePath from the appropriate place */ + + if (OpInfo->Flags & AML_NAMED) + { + /* For all named operators, get the new name */ + + Path = (char *) Op->Named.Path; + } + else if (OpInfo->Flags & AML_CREATE) + { + /* New name is the last child */ + + NextOp = Op->Common.Value.Arg; + + while (NextOp->Common.Next) + { + NextOp = NextOp->Common.Next; + } + Path = NextOp->Common.Value.String; + } + + if (!Path) + { + goto Exit; + } + + /* Insert the name into the namespace */ + + Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType, + ACPI_IMODE_LOAD_PASS2, ACPI_NS_DONT_OPEN_SCOPE, + WalkState, &Node); + + Op->Common.Node = Node; + + +Exit: + + if (AcpiNsOpensScope (ObjectType)) + { + if (Op->Common.Node) + { + Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, WalkState); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + } + } + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmXrefDescendingOp + * + * PARAMETERS: ASL_WALK_CALLBACK + * + * RETURN: Status + * + * DESCRIPTION: Descending handler for namespace cross reference + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiDmXrefDescendingOp ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context) +{ + ACPI_OP_WALK_INFO *Info = Context; + const ACPI_OPCODE_INFO *OpInfo; + ACPI_WALK_STATE *WalkState; + ACPI_OBJECT_TYPE ObjectType; + ACPI_STATUS Status; + char *Path = NULL; + ACPI_PARSE_OBJECT *NextOp; + ACPI_NAMESPACE_NODE *Node; + + + WalkState = Info->WalkState; + OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); + ObjectType = OpInfo->ObjectType; + ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); + + if ((!(OpInfo->Flags & AML_NAMED)) && + (!(OpInfo->Flags & AML_CREATE)) && + (Op->Common.AmlOpcode != AML_INT_NAMEPATH_OP)) + { + goto Exit; + } + + /* Get the NamePath from the appropriate place */ + + if (OpInfo->Flags & AML_NAMED) + { + if ((Op->Common.AmlOpcode == AML_ALIAS_OP) || + (Op->Common.AmlOpcode == AML_SCOPE_OP)) + { + /* + * Only these two operators refer to an existing name, + * first argument + */ + Path = (char *) Op->Named.Path; + } + } + else if (OpInfo->Flags & AML_CREATE) + { + /* Referenced Buffer Name is the first child */ + + NextOp = Op->Common.Value.Arg; + if (NextOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) + { + Path = NextOp->Common.Value.String; + } + } + else + { + Path = Op->Common.Value.String; + } + + if (!Path) + { + goto Exit; + } + + /* + * Lookup the name in the namespace. Name must exist at this point, or it + * is an invalid reference. + * + * The namespace is also used as a lookup table for references to resource + * descriptors and the fields within them. + */ + Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, + ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, + WalkState, &Node); + if (ACPI_FAILURE (Status)) + { + if (Status == AE_NOT_FOUND) + { + AcpiDmAddToExternalList (Path, (UINT8) ObjectType, 0); + + /* + * We could install this into the namespace, but we catch duplicate + * externals when they are added to the list. + */ +#if 0 + Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY, + ACPI_IMODE_LOAD_PASS1, ACPI_NS_DONT_OPEN_SCOPE, + WalkState, &Node); +#endif + } + } + else + { + Op->Common.Node = Node; + } + + +Exit: + /* Open new scope if necessary */ + + if (AcpiNsOpensScope (ObjectType)) + { + if (Op->Common.Node) + { + Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, WalkState); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + } + } + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmResourceDescendingOp + * + * PARAMETERS: ASL_WALK_CALLBACK + * + * RETURN: None + * + * DESCRIPTION: Process one parse op during symbolic resource index conversion. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiDmResourceDescendingOp ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context) +{ + ACPI_OP_WALK_INFO *Info = Context; + const ACPI_OPCODE_INFO *OpInfo; + ACPI_WALK_STATE *WalkState; + ACPI_OBJECT_TYPE ObjectType; + ACPI_STATUS Status; + + + WalkState = Info->WalkState; + OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); + + /* Open new scope if necessary */ + + ObjectType = OpInfo->ObjectType; + if (AcpiNsOpensScope (ObjectType)) + { + if (Op->Common.Node) + { + + Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, WalkState); + if (ACPI_FAILURE (Status)) + { + return (Status); + } + } + } + + /* + * Check if this operator contains a reference to a resource descriptor. + * If so, convert the reference into a symbolic reference. + */ + AcpiDmCheckResourceReference (Op, WalkState); + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmCommonAscendingOp + * + * PARAMETERS: ASL_WALK_CALLBACK + * + * RETURN: None + * + * DESCRIPTION: Ascending handler for combined parse/namespace walks. Closes + * scope if necessary. + * + ******************************************************************************/ + +static ACPI_STATUS +AcpiDmCommonAscendingOp ( + ACPI_PARSE_OBJECT *Op, + UINT32 Level, + void *Context) +{ + ACPI_OP_WALK_INFO *Info = Context; + const ACPI_OPCODE_INFO *OpInfo; + ACPI_OBJECT_TYPE ObjectType; + + + /* Close scope if necessary */ + + OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); + ObjectType = OpInfo->ObjectType; + ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode); + + if (AcpiNsOpensScope (ObjectType)) + { + (void) AcpiDsScopeStackPop (Info->WalkState); + } + + return (AE_OK); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiDmInspectPossibleArgs + * + * PARAMETERS: CurrentOpArgCount - Which arg of the current op was the + * possible method invocation found + * TargetCount - Number of targets (0,1,2) for this op + * Op - Parse op + * + * RETURN: Status + * + * DESCRIPTION: Examine following args and next ops for possible arguments + * for an unrecognized method invocation. + * + ******************************************************************************/ + +static UINT32 +AcpiDmInspectPossibleArgs ( + UINT32 CurrentOpArgCount, + UINT32 TargetCount, + ACPI_PARSE_OBJECT *Op) +{ + const ACPI_OPCODE_INFO *OpInfo; + UINT32 i; + UINT32 Last = 0; + UINT32 Lookahead; + + + Lookahead = (ACPI_METHOD_NUM_ARGS + TargetCount) - CurrentOpArgCount; + + /* Lookahead for the maximum number of possible arguments */ + + for (i = 0; i < Lookahead; i++) + { + if (!Op) + { + break; + } + + OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); + + /* + * Any one of these operators is "very probably" not a method arg + */ + if ((Op->Common.AmlOpcode == AML_STORE_OP) || + (Op->Common.AmlOpcode == AML_NOTIFY_OP)) + { + break; + } + + if ((OpInfo->Class != AML_CLASS_EXECUTE) && + (OpInfo->Class != AML_CLASS_CONTROL)) + { + Last = i+1; + } + + Op = Op->Common.Next; + } + + return (Last); +} + + |
