| 0,0 → 1,2020 |
|---|
| |
| /****************************************************************************** |
| * |
| * Module Name: aslanalyze.c - check for semantic errors |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 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. |
| * |
| *****************************************************************************/ |
| |
| |
| #include "aslcompiler.h" |
| #include "aslcompiler.y.h" |
| #include "acparser.h" |
| #include "amlcode.h" |
| |
| #define _COMPONENT ACPI_COMPILER |
| ACPI_MODULE_NAME ("aslanalyze") |
| |
| /* Local prototypes */ |
| |
| static UINT32 |
| AnMapArgTypeToBtype ( |
| UINT32 ArgType); |
| |
| static UINT32 |
| AnMapEtypeToBtype ( |
| UINT32 Etype); |
| |
| static void |
| AnFormatBtype ( |
| char *Buffer, |
| UINT32 Btype); |
| |
| static UINT32 |
| AnGetBtype ( |
| ACPI_PARSE_OBJECT *Op); |
| |
| static UINT32 |
| AnMapObjTypeToBtype ( |
| ACPI_PARSE_OBJECT *Op); |
| |
| static BOOLEAN |
| AnLastStatementIsReturn ( |
| ACPI_PARSE_OBJECT *Op); |
| |
| static void |
| AnCheckMethodReturnValue ( |
| ACPI_PARSE_OBJECT *Op, |
| const ACPI_OPCODE_INFO *OpInfo, |
| ACPI_PARSE_OBJECT *ArgOp, |
| UINT32 RequiredBtypes, |
| UINT32 ThisNodeBtype); |
| |
| static BOOLEAN |
| AnIsInternalMethod ( |
| ACPI_PARSE_OBJECT *Op); |
| |
| static UINT32 |
| AnGetInternalMethodReturnType ( |
| ACPI_PARSE_OBJECT *Op); |
| |
| BOOLEAN |
| AnIsResultUsed ( |
| ACPI_PARSE_OBJECT *Op); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnIsInternalMethod |
| * |
| * PARAMETERS: Op - Current op |
| * |
| * RETURN: Boolean |
| * |
| * DESCRIPTION: Check for an internal control method. |
| * |
| ******************************************************************************/ |
| |
| static BOOLEAN |
| AnIsInternalMethod ( |
| ACPI_PARSE_OBJECT *Op) |
| { |
| |
| if ((!ACPI_STRCMP (Op->Asl.ExternalName, "\\_OSI")) || |
| (!ACPI_STRCMP (Op->Asl.ExternalName, "_OSI"))) |
| { |
| return (TRUE); |
| } |
| |
| return (FALSE); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnGetInternalMethodReturnType |
| * |
| * PARAMETERS: Op - Current op |
| * |
| * RETURN: Btype |
| * |
| * DESCRIPTION: Get the return type of an internal method |
| * |
| ******************************************************************************/ |
| |
| static UINT32 |
| AnGetInternalMethodReturnType ( |
| ACPI_PARSE_OBJECT *Op) |
| { |
| |
| if ((!ACPI_STRCMP (Op->Asl.ExternalName, "\\_OSI")) || |
| (!ACPI_STRCMP (Op->Asl.ExternalName, "_OSI"))) |
| { |
| return (ACPI_BTYPE_STRING); |
| } |
| |
| return (0); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnMapArgTypeToBtype |
| * |
| * PARAMETERS: ArgType - The ARGI required type(s) for this argument, |
| * from the opcode info table |
| * |
| * RETURN: The corresponding Bit-encoded types |
| * |
| * DESCRIPTION: Convert an encoded ARGI required argument type code into a |
| * bitfield type code. Implements the implicit source conversion |
| * rules. |
| * |
| ******************************************************************************/ |
| |
| static UINT32 |
| AnMapArgTypeToBtype ( |
| UINT32 ArgType) |
| { |
| |
| switch (ArgType) |
| { |
| |
| /* Simple types */ |
| |
| case ARGI_ANYTYPE: |
| return (ACPI_BTYPE_OBJECTS_AND_REFS); |
| |
| case ARGI_PACKAGE: |
| return (ACPI_BTYPE_PACKAGE); |
| |
| case ARGI_EVENT: |
| return (ACPI_BTYPE_EVENT); |
| |
| case ARGI_MUTEX: |
| return (ACPI_BTYPE_MUTEX); |
| |
| case ARGI_DDBHANDLE: |
| /* |
| * DDBHandleObject := SuperName |
| * ACPI_BTYPE_REFERENCE: Index reference as parameter of Load/Unload |
| */ |
| return (ACPI_BTYPE_DDB_HANDLE | ACPI_BTYPE_REFERENCE); |
| |
| /* Interchangeable types */ |
| /* |
| * Source conversion rules: |
| * Integer, String, and Buffer are all interchangeable |
| */ |
| case ARGI_INTEGER: |
| case ARGI_STRING: |
| case ARGI_BUFFER: |
| case ARGI_BUFFER_OR_STRING: |
| case ARGI_COMPUTEDATA: |
| return (ACPI_BTYPE_COMPUTE_DATA); |
| |
| /* References */ |
| |
| case ARGI_INTEGER_REF: |
| return (ACPI_BTYPE_INTEGER); |
| |
| case ARGI_OBJECT_REF: |
| return (ACPI_BTYPE_ALL_OBJECTS); |
| |
| case ARGI_DEVICE_REF: |
| return (ACPI_BTYPE_DEVICE_OBJECTS); |
| |
| case ARGI_REFERENCE: |
| return (ACPI_BTYPE_REFERENCE); |
| |
| case ARGI_TARGETREF: |
| case ARGI_FIXED_TARGET: |
| case ARGI_SIMPLE_TARGET: |
| return (ACPI_BTYPE_OBJECTS_AND_REFS); |
| |
| /* Complex types */ |
| |
| case ARGI_DATAOBJECT: |
| |
| /* |
| * Buffer, string, package or reference to a Op - |
| * Used only by SizeOf operator |
| */ |
| return (ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER | |
| ACPI_BTYPE_PACKAGE | ACPI_BTYPE_REFERENCE); |
| |
| case ARGI_COMPLEXOBJ: |
| |
| /* Buffer, String, or package */ |
| |
| return (ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER | ACPI_BTYPE_PACKAGE); |
| |
| case ARGI_REF_OR_STRING: |
| return (ACPI_BTYPE_STRING | ACPI_BTYPE_REFERENCE); |
| |
| case ARGI_REGION_OR_BUFFER: |
| |
| /* Used by Load() only. Allow buffers in addition to regions/fields */ |
| |
| return (ACPI_BTYPE_REGION | ACPI_BTYPE_BUFFER | ACPI_BTYPE_FIELD_UNIT); |
| |
| case ARGI_DATAREFOBJ: |
| return (ACPI_BTYPE_INTEGER |ACPI_BTYPE_STRING | ACPI_BTYPE_BUFFER | |
| ACPI_BTYPE_PACKAGE | ACPI_BTYPE_REFERENCE | ACPI_BTYPE_DDB_HANDLE); |
| |
| default: |
| break; |
| } |
| |
| return (ACPI_BTYPE_OBJECTS_AND_REFS); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnMapEtypeToBtype |
| * |
| * PARAMETERS: Etype - Encoded ACPI Type |
| * |
| * RETURN: Btype corresponding to the Etype |
| * |
| * DESCRIPTION: Convert an encoded ACPI type to a bitfield type applying the |
| * operand conversion rules. In other words, returns the type(s) |
| * this Etype is implicitly converted to during interpretation. |
| * |
| ******************************************************************************/ |
| |
| static UINT32 |
| AnMapEtypeToBtype ( |
| UINT32 Etype) |
| { |
| |
| |
| if (Etype == ACPI_TYPE_ANY) |
| { |
| return ACPI_BTYPE_OBJECTS_AND_REFS; |
| } |
| |
| /* Try the standard ACPI data types */ |
| |
| if (Etype <= ACPI_TYPE_EXTERNAL_MAX) |
| { |
| /* |
| * This switch statement implements the allowed operand conversion |
| * rules as per the "ASL Data Types" section of the ACPI |
| * specification. |
| */ |
| switch (Etype) |
| { |
| case ACPI_TYPE_INTEGER: |
| return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_DDB_HANDLE); |
| |
| case ACPI_TYPE_STRING: |
| case ACPI_TYPE_BUFFER: |
| return (ACPI_BTYPE_COMPUTE_DATA); |
| |
| case ACPI_TYPE_PACKAGE: |
| return (ACPI_BTYPE_PACKAGE); |
| |
| case ACPI_TYPE_FIELD_UNIT: |
| return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_FIELD_UNIT); |
| |
| case ACPI_TYPE_BUFFER_FIELD: |
| return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_BUFFER_FIELD); |
| |
| case ACPI_TYPE_DDB_HANDLE: |
| return (ACPI_BTYPE_INTEGER | ACPI_BTYPE_DDB_HANDLE); |
| |
| case ACPI_BTYPE_DEBUG_OBJECT: |
| |
| /* Cannot be used as a source operand */ |
| |
| return (0); |
| |
| default: |
| return (1 << (Etype - 1)); |
| } |
| } |
| |
| /* Try the internal data types */ |
| |
| switch (Etype) |
| { |
| case ACPI_TYPE_LOCAL_REGION_FIELD: |
| case ACPI_TYPE_LOCAL_BANK_FIELD: |
| case ACPI_TYPE_LOCAL_INDEX_FIELD: |
| |
| /* Named fields can be either Integer/Buffer/String */ |
| |
| return (ACPI_BTYPE_COMPUTE_DATA | ACPI_BTYPE_FIELD_UNIT); |
| |
| case ACPI_TYPE_LOCAL_ALIAS: |
| |
| return (ACPI_BTYPE_INTEGER); |
| |
| |
| case ACPI_TYPE_LOCAL_RESOURCE: |
| case ACPI_TYPE_LOCAL_RESOURCE_FIELD: |
| |
| return (ACPI_BTYPE_REFERENCE); |
| |
| default: |
| printf ("Unhandled encoded type: %X\n", Etype); |
| return (0); |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnFormatBtype |
| * |
| * PARAMETERS: Btype - Bitfield of ACPI types |
| * Buffer - Where to put the ascii string |
| * |
| * RETURN: None. |
| * |
| * DESCRIPTION: Convert a Btype to a string of ACPI types |
| * |
| ******************************************************************************/ |
| |
| static void |
| AnFormatBtype ( |
| char *Buffer, |
| UINT32 Btype) |
| { |
| UINT32 Type; |
| BOOLEAN First = TRUE; |
| |
| |
| *Buffer = 0; |
| |
| if (Btype == 0) |
| { |
| strcat (Buffer, "NoReturnValue"); |
| return; |
| } |
| |
| for (Type = 1; Type <= ACPI_TYPE_EXTERNAL_MAX; Type++) |
| { |
| if (Btype & 0x00000001) |
| { |
| if (!First) |
| { |
| strcat (Buffer, "|"); |
| } |
| First = FALSE; |
| strcat (Buffer, AcpiUtGetTypeName (Type)); |
| } |
| Btype >>= 1; |
| } |
| |
| if (Btype & 0x00000001) |
| { |
| if (!First) |
| { |
| strcat (Buffer, "|"); |
| } |
| First = FALSE; |
| strcat (Buffer, "Reference"); |
| } |
| |
| Btype >>= 1; |
| if (Btype & 0x00000001) |
| { |
| if (!First) |
| { |
| strcat (Buffer, "|"); |
| } |
| First = FALSE; |
| strcat (Buffer, "Resource"); |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnGetBtype |
| * |
| * PARAMETERS: Op - Parse node whose type will be returned. |
| * |
| * RETURN: The Btype associated with the Op. |
| * |
| * DESCRIPTION: Get the (bitfield) ACPI type associated with the parse node. |
| * Handles the case where the node is a name or method call and |
| * the actual type must be obtained from the namespace node. |
| * |
| ******************************************************************************/ |
| |
| static UINT32 |
| AnGetBtype ( |
| ACPI_PARSE_OBJECT *Op) |
| { |
| ACPI_NAMESPACE_NODE *Node; |
| ACPI_PARSE_OBJECT *ReferencedNode; |
| UINT32 ThisNodeBtype = 0; |
| |
| |
| if ((Op->Asl.ParseOpcode == PARSEOP_NAMESEG) || |
| (Op->Asl.ParseOpcode == PARSEOP_NAMESTRING) || |
| (Op->Asl.ParseOpcode == PARSEOP_METHODCALL)) |
| { |
| Node = Op->Asl.Node; |
| if (!Node) |
| { |
| DbgPrint (ASL_DEBUG_OUTPUT, |
| "No attached Nsnode: [%s] at line %u name [%s], ignoring typecheck\n", |
| Op->Asl.ParseOpName, Op->Asl.LineNumber, |
| Op->Asl.ExternalName); |
| return ACPI_UINT32_MAX; |
| } |
| |
| ThisNodeBtype = AnMapEtypeToBtype (Node->Type); |
| if (!ThisNodeBtype) |
| { |
| AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op, |
| "could not map type"); |
| } |
| |
| /* |
| * Since it was a named reference, enable the |
| * reference bit also |
| */ |
| ThisNodeBtype |= ACPI_BTYPE_REFERENCE; |
| |
| if (Op->Asl.ParseOpcode == PARSEOP_METHODCALL) |
| { |
| ReferencedNode = Node->Op; |
| if (!ReferencedNode) |
| { |
| /* Check for an internal method */ |
| |
| if (AnIsInternalMethod (Op)) |
| { |
| return (AnGetInternalMethodReturnType (Op)); |
| } |
| |
| AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op, |
| "null Op pointer"); |
| return ACPI_UINT32_MAX; |
| } |
| |
| if (ReferencedNode->Asl.CompileFlags & NODE_METHOD_TYPED) |
| { |
| ThisNodeBtype = ReferencedNode->Asl.AcpiBtype; |
| } |
| else |
| { |
| return (ACPI_UINT32_MAX -1); |
| } |
| } |
| } |
| else |
| { |
| ThisNodeBtype = Op->Asl.AcpiBtype; |
| } |
| |
| return (ThisNodeBtype); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnMapObjTypeToBtype |
| * |
| * PARAMETERS: Op - A parse node |
| * |
| * RETURN: A Btype |
| * |
| * DESCRIPTION: Map object to the associated "Btype" |
| * |
| ******************************************************************************/ |
| |
| static UINT32 |
| AnMapObjTypeToBtype ( |
| ACPI_PARSE_OBJECT *Op) |
| { |
| |
| switch (Op->Asl.ParseOpcode) |
| { |
| case PARSEOP_OBJECTTYPE_BFF: /* "BuffFieldObj" */ |
| return (ACPI_BTYPE_BUFFER_FIELD); |
| |
| case PARSEOP_OBJECTTYPE_BUF: /* "BuffObj" */ |
| return (ACPI_BTYPE_BUFFER); |
| |
| case PARSEOP_OBJECTTYPE_DDB: /* "DDBHandleObj" */ |
| return (ACPI_BTYPE_DDB_HANDLE); |
| |
| case PARSEOP_OBJECTTYPE_DEV: /* "DeviceObj" */ |
| return (ACPI_BTYPE_DEVICE); |
| |
| case PARSEOP_OBJECTTYPE_EVT: /* "EventObj" */ |
| return (ACPI_BTYPE_EVENT); |
| |
| case PARSEOP_OBJECTTYPE_FLD: /* "FieldUnitObj" */ |
| return (ACPI_BTYPE_FIELD_UNIT); |
| |
| case PARSEOP_OBJECTTYPE_INT: /* "IntObj" */ |
| return (ACPI_BTYPE_INTEGER); |
| |
| case PARSEOP_OBJECTTYPE_MTH: /* "MethodObj" */ |
| return (ACPI_BTYPE_METHOD); |
| |
| case PARSEOP_OBJECTTYPE_MTX: /* "MutexObj" */ |
| return (ACPI_BTYPE_MUTEX); |
| |
| case PARSEOP_OBJECTTYPE_OPR: /* "OpRegionObj" */ |
| return (ACPI_BTYPE_REGION); |
| |
| case PARSEOP_OBJECTTYPE_PKG: /* "PkgObj" */ |
| return (ACPI_BTYPE_PACKAGE); |
| |
| case PARSEOP_OBJECTTYPE_POW: /* "PowerResObj" */ |
| return (ACPI_BTYPE_POWER); |
| |
| case PARSEOP_OBJECTTYPE_STR: /* "StrObj" */ |
| return (ACPI_BTYPE_STRING); |
| |
| case PARSEOP_OBJECTTYPE_THZ: /* "ThermalZoneObj" */ |
| return (ACPI_BTYPE_THERMAL); |
| |
| case PARSEOP_OBJECTTYPE_UNK: /* "UnknownObj" */ |
| return (ACPI_BTYPE_OBJECTS_AND_REFS); |
| |
| default: |
| return (0); |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnMethodAnalysisWalkBegin |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Descending callback for the analysis walk. Check methods for: |
| * 1) Initialized local variables |
| * 2) Valid arguments |
| * 3) Return types |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AnMethodAnalysisWalkBegin ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| ASL_ANALYSIS_WALK_INFO *WalkInfo = (ASL_ANALYSIS_WALK_INFO *) Context; |
| ASL_METHOD_INFO *MethodInfo = WalkInfo->MethodStack; |
| ACPI_PARSE_OBJECT *Next; |
| UINT32 RegisterNumber; |
| UINT32 i; |
| char LocalName[] = "Local0"; |
| char ArgName[] = "Arg0"; |
| ACPI_PARSE_OBJECT *ArgNode; |
| ACPI_PARSE_OBJECT *NextType; |
| ACPI_PARSE_OBJECT *NextParamType; |
| UINT8 ActualArgs = 0; |
| |
| |
| switch (Op->Asl.ParseOpcode) |
| { |
| case PARSEOP_METHOD: |
| |
| TotalMethods++; |
| |
| /* Create and init method info */ |
| |
| MethodInfo = UtLocalCalloc (sizeof (ASL_METHOD_INFO)); |
| MethodInfo->Next = WalkInfo->MethodStack; |
| MethodInfo->Op = Op; |
| |
| WalkInfo->MethodStack = MethodInfo; |
| |
| /* Get the name node, ignored here */ |
| |
| Next = Op->Asl.Child; |
| |
| /* Get the NumArguments node */ |
| |
| Next = Next->Asl.Next; |
| MethodInfo->NumArguments = (UINT8) |
| (((UINT8) Next->Asl.Value.Integer) & 0x07); |
| |
| /* Get the SerializeRule and SyncLevel nodes, ignored here */ |
| |
| Next = Next->Asl.Next; |
| Next = Next->Asl.Next; |
| ArgNode = Next; |
| |
| /* Get the ReturnType node */ |
| |
| Next = Next->Asl.Next; |
| |
| NextType = Next->Asl.Child; |
| while (NextType) |
| { |
| /* Get and map each of the ReturnTypes */ |
| |
| MethodInfo->ValidReturnTypes |= AnMapObjTypeToBtype (NextType); |
| NextType->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; |
| NextType = NextType->Asl.Next; |
| } |
| |
| /* Get the ParameterType node */ |
| |
| Next = Next->Asl.Next; |
| |
| NextType = Next->Asl.Child; |
| while (NextType) |
| { |
| if (NextType->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG) |
| { |
| NextParamType = NextType->Asl.Child; |
| while (NextParamType) |
| { |
| MethodInfo->ValidArgTypes[ActualArgs] |= AnMapObjTypeToBtype (NextParamType); |
| NextParamType->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; |
| NextParamType = NextParamType->Asl.Next; |
| } |
| } |
| else |
| { |
| MethodInfo->ValidArgTypes[ActualArgs] = |
| AnMapObjTypeToBtype (NextType); |
| NextType->Asl.ParseOpcode = PARSEOP_DEFAULT_ARG; |
| ActualArgs++; |
| } |
| |
| NextType = NextType->Asl.Next; |
| } |
| |
| if ((MethodInfo->NumArguments) && |
| (MethodInfo->NumArguments != ActualArgs)) |
| { |
| /* error: Param list did not match number of args */ |
| } |
| |
| /* Allow numarguments == 0 for Function() */ |
| |
| if ((!MethodInfo->NumArguments) && (ActualArgs)) |
| { |
| MethodInfo->NumArguments = ActualArgs; |
| ArgNode->Asl.Value.Integer |= ActualArgs; |
| } |
| |
| /* |
| * Actual arguments are initialized at method entry. |
| * All other ArgX "registers" can be used as locals, so we |
| * track their initialization. |
| */ |
| for (i = 0; i < MethodInfo->NumArguments; i++) |
| { |
| MethodInfo->ArgInitialized[i] = TRUE; |
| } |
| break; |
| |
| |
| case PARSEOP_METHODCALL: |
| |
| if (MethodInfo && |
| (Op->Asl.Node == MethodInfo->Op->Asl.Node)) |
| { |
| AslError (ASL_REMARK, ASL_MSG_RECURSION, Op, Op->Asl.ExternalName); |
| } |
| break; |
| |
| |
| case PARSEOP_LOCAL0: |
| case PARSEOP_LOCAL1: |
| case PARSEOP_LOCAL2: |
| case PARSEOP_LOCAL3: |
| case PARSEOP_LOCAL4: |
| case PARSEOP_LOCAL5: |
| case PARSEOP_LOCAL6: |
| case PARSEOP_LOCAL7: |
| |
| if (!MethodInfo) |
| { |
| /* |
| * Local was used outside a control method, or there was an error |
| * in the method declaration. |
| */ |
| AslError (ASL_REMARK, ASL_MSG_LOCAL_OUTSIDE_METHOD, Op, Op->Asl.ExternalName); |
| return (AE_ERROR); |
| } |
| |
| RegisterNumber = (Op->Asl.AmlOpcode & 0x000F); |
| |
| /* |
| * If the local is being used as a target, mark the local |
| * initialized |
| */ |
| if (Op->Asl.CompileFlags & NODE_IS_TARGET) |
| { |
| MethodInfo->LocalInitialized[RegisterNumber] = TRUE; |
| } |
| |
| /* |
| * Otherwise, this is a reference, check if the local |
| * has been previously initialized. |
| * |
| * The only operator that accepts an uninitialized value is ObjectType() |
| */ |
| else if ((!MethodInfo->LocalInitialized[RegisterNumber]) && |
| (Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_OBJECTTYPE)) |
| { |
| LocalName[strlen (LocalName) -1] = (char) (RegisterNumber + 0x30); |
| AslError (ASL_ERROR, ASL_MSG_LOCAL_INIT, Op, LocalName); |
| } |
| break; |
| |
| |
| case PARSEOP_ARG0: |
| case PARSEOP_ARG1: |
| case PARSEOP_ARG2: |
| case PARSEOP_ARG3: |
| case PARSEOP_ARG4: |
| case PARSEOP_ARG5: |
| case PARSEOP_ARG6: |
| |
| if (!MethodInfo) |
| { |
| /* |
| * Arg was used outside a control method, or there was an error |
| * in the method declaration. |
| */ |
| AslError (ASL_REMARK, ASL_MSG_LOCAL_OUTSIDE_METHOD, Op, Op->Asl.ExternalName); |
| return (AE_ERROR); |
| } |
| |
| RegisterNumber = (Op->Asl.AmlOpcode & 0x000F) - 8; |
| ArgName[strlen (ArgName) -1] = (char) (RegisterNumber + 0x30); |
| |
| /* |
| * If the Arg is being used as a target, mark the local |
| * initialized |
| */ |
| if (Op->Asl.CompileFlags & NODE_IS_TARGET) |
| { |
| MethodInfo->ArgInitialized[RegisterNumber] = TRUE; |
| } |
| |
| /* |
| * Otherwise, this is a reference, check if the Arg |
| * has been previously initialized. |
| * |
| * The only operator that accepts an uninitialized value is ObjectType() |
| */ |
| else if ((!MethodInfo->ArgInitialized[RegisterNumber]) && |
| (Op->Asl.Parent->Asl.ParseOpcode != PARSEOP_OBJECTTYPE)) |
| { |
| AslError (ASL_ERROR, ASL_MSG_ARG_INIT, Op, ArgName); |
| } |
| |
| /* Flag this arg if it is not a "real" argument to the method */ |
| |
| if (RegisterNumber >= MethodInfo->NumArguments) |
| { |
| AslError (ASL_REMARK, ASL_MSG_NOT_PARAMETER, Op, ArgName); |
| } |
| break; |
| |
| |
| case PARSEOP_RETURN: |
| |
| if (!MethodInfo) |
| { |
| /* |
| * Probably was an error in the method declaration, |
| * no additional error here |
| */ |
| ACPI_WARNING ((AE_INFO, "%p, No parent method", Op)); |
| return (AE_ERROR); |
| } |
| |
| /* Child indicates a return value */ |
| |
| if ((Op->Asl.Child) && |
| (Op->Asl.Child->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG)) |
| { |
| MethodInfo->NumReturnWithValue++; |
| } |
| else |
| { |
| MethodInfo->NumReturnNoValue++; |
| } |
| break; |
| |
| |
| case PARSEOP_BREAK: |
| case PARSEOP_CONTINUE: |
| |
| Next = Op->Asl.Parent; |
| while (Next) |
| { |
| if (Next->Asl.ParseOpcode == PARSEOP_WHILE) |
| { |
| break; |
| } |
| Next = Next->Asl.Parent; |
| } |
| |
| if (!Next) |
| { |
| AslError (ASL_ERROR, ASL_MSG_NO_WHILE, Op, NULL); |
| } |
| break; |
| |
| |
| case PARSEOP_STALL: |
| |
| /* We can range check if the argument is an integer */ |
| |
| if ((Op->Asl.Child->Asl.ParseOpcode == PARSEOP_INTEGER) && |
| (Op->Asl.Child->Asl.Value.Integer > ACPI_UINT8_MAX)) |
| { |
| AslError (ASL_ERROR, ASL_MSG_INVALID_TIME, Op, NULL); |
| } |
| break; |
| |
| |
| case PARSEOP_DEVICE: |
| case PARSEOP_EVENT: |
| case PARSEOP_MUTEX: |
| case PARSEOP_OPERATIONREGION: |
| case PARSEOP_POWERRESOURCE: |
| case PARSEOP_PROCESSOR: |
| case PARSEOP_THERMALZONE: |
| |
| /* |
| * The first operand is a name to be created in the namespace. |
| * Check against the reserved list. |
| */ |
| i = ApCheckForPredefinedName (Op, Op->Asl.NameSeg); |
| if (i < ACPI_VALID_RESERVED_NAME_MAX) |
| { |
| AslError (ASL_ERROR, ASL_MSG_RESERVED_USE, Op, Op->Asl.ExternalName); |
| } |
| break; |
| |
| |
| case PARSEOP_NAME: |
| |
| /* Typecheck any predefined names statically defined with Name() */ |
| |
| ApCheckForPredefinedObject (Op, Op->Asl.NameSeg); |
| |
| /* Special typechecking for _HID */ |
| |
| if (!ACPI_STRCMP (METHOD_NAME__HID, Op->Asl.NameSeg)) |
| { |
| Next = Op->Asl.Child->Asl.Next; |
| if (Next->Asl.ParseOpcode == PARSEOP_STRING_LITERAL) |
| { |
| /* |
| * _HID is a string, all characters must be alphanumeric. |
| * One of the things we want to catch here is the use of |
| * a leading asterisk in the string. |
| */ |
| for (i = 0; Next->Asl.Value.String[i]; i++) |
| { |
| if (!isalnum ((int) Next->Asl.Value.String[i])) |
| { |
| AslError (ASL_ERROR, ASL_MSG_ALPHANUMERIC_STRING, |
| Next, Next->Asl.Value.String); |
| break; |
| } |
| } |
| } |
| } |
| break; |
| |
| |
| default: |
| break; |
| } |
| |
| return AE_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnLastStatementIsReturn |
| * |
| * PARAMETERS: Op - A method parse node |
| * |
| * RETURN: TRUE if last statement is an ASL RETURN. False otherwise |
| * |
| * DESCRIPTION: Walk down the list of top level statements within a method |
| * to find the last one. Check if that last statement is in |
| * fact a RETURN statement. |
| * |
| ******************************************************************************/ |
| |
| static BOOLEAN |
| AnLastStatementIsReturn ( |
| ACPI_PARSE_OBJECT *Op) |
| { |
| ACPI_PARSE_OBJECT *Next; |
| |
| |
| /* |
| * Check if last statement is a return |
| */ |
| Next = ASL_GET_CHILD_NODE (Op); |
| while (Next) |
| { |
| if ((!Next->Asl.Next) && |
| (Next->Asl.ParseOpcode == PARSEOP_RETURN)) |
| { |
| return TRUE; |
| } |
| |
| Next = ASL_GET_PEER_NODE (Next); |
| } |
| |
| return FALSE; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnMethodAnalysisWalkEnd |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Ascending callback for analysis walk. Complete method |
| * return analysis. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AnMethodAnalysisWalkEnd ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| ASL_ANALYSIS_WALK_INFO *WalkInfo = (ASL_ANALYSIS_WALK_INFO *) Context; |
| ASL_METHOD_INFO *MethodInfo = WalkInfo->MethodStack; |
| |
| |
| switch (Op->Asl.ParseOpcode) |
| { |
| case PARSEOP_METHOD: |
| case PARSEOP_RETURN: |
| if (!MethodInfo) |
| { |
| printf ("No method info for method! [%s]\n", Op->Asl.Namepath); |
| AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Op, |
| "No method info for this method"); |
| CmCleanupAndExit (); |
| return (AE_AML_INTERNAL); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| switch (Op->Asl.ParseOpcode) |
| { |
| case PARSEOP_METHOD: |
| |
| WalkInfo->MethodStack = MethodInfo->Next; |
| |
| /* |
| * Check if there is no return statement at the end of the |
| * method AND we can actually get there -- i.e., the execution |
| * of the method can possibly terminate without a return statement. |
| */ |
| if ((!AnLastStatementIsReturn (Op)) && |
| (!(Op->Asl.CompileFlags & NODE_HAS_NO_EXIT))) |
| { |
| /* |
| * No return statement, and execution can possibly exit |
| * via this path. This is equivalent to Return () |
| */ |
| MethodInfo->NumReturnNoValue++; |
| } |
| |
| /* |
| * Check for case where some return statements have a return value |
| * and some do not. Exit without a return statement is a return with |
| * no value |
| */ |
| if (MethodInfo->NumReturnNoValue && |
| MethodInfo->NumReturnWithValue) |
| { |
| AslError (ASL_WARNING, ASL_MSG_RETURN_TYPES, Op, |
| Op->Asl.ExternalName); |
| } |
| |
| /* |
| * If there are any RETURN() statements with no value, or there is a |
| * control path that allows the method to exit without a return value, |
| * we mark the method as a method that does not return a value. This |
| * knowledge can be used to check method invocations that expect a |
| * returned value. |
| */ |
| if (MethodInfo->NumReturnNoValue) |
| { |
| if (MethodInfo->NumReturnWithValue) |
| { |
| Op->Asl.CompileFlags |= NODE_METHOD_SOME_NO_RETVAL; |
| } |
| else |
| { |
| Op->Asl.CompileFlags |= NODE_METHOD_NO_RETVAL; |
| } |
| } |
| |
| /* |
| * Check predefined method names for correct return behavior |
| * and correct number of arguments |
| */ |
| ApCheckForPredefinedMethod (Op, MethodInfo); |
| ACPI_FREE (MethodInfo); |
| break; |
| |
| |
| case PARSEOP_RETURN: |
| |
| /* |
| * If the parent is a predefined method name, attempt to typecheck |
| * the return value. Only static types can be validated. |
| */ |
| ApCheckPredefinedReturnValue (Op, MethodInfo); |
| |
| /* |
| * The parent block does not "exit" and continue execution -- the |
| * method is terminated here with the Return() statement. |
| */ |
| Op->Asl.Parent->Asl.CompileFlags |= NODE_HAS_NO_EXIT; |
| |
| /* Used in the "typing" pass later */ |
| |
| Op->Asl.ParentMethod = MethodInfo->Op; |
| |
| /* |
| * If there is a peer node after the return statement, then this |
| * node is unreachable code -- i.e., it won't be executed because of |
| * the preceeding Return() statement. |
| */ |
| if (Op->Asl.Next) |
| { |
| AslError (ASL_WARNING, ASL_MSG_UNREACHABLE_CODE, Op->Asl.Next, NULL); |
| } |
| break; |
| |
| |
| case PARSEOP_IF: |
| |
| if ((Op->Asl.CompileFlags & NODE_HAS_NO_EXIT) && |
| (Op->Asl.Next) && |
| (Op->Asl.Next->Asl.ParseOpcode == PARSEOP_ELSE)) |
| { |
| /* |
| * This IF has a corresponding ELSE. The IF block has no exit, |
| * (it contains an unconditional Return) |
| * mark the ELSE block to remember this fact. |
| */ |
| Op->Asl.Next->Asl.CompileFlags |= NODE_IF_HAS_NO_EXIT; |
| } |
| break; |
| |
| |
| case PARSEOP_ELSE: |
| |
| if ((Op->Asl.CompileFlags & NODE_HAS_NO_EXIT) && |
| (Op->Asl.CompileFlags & NODE_IF_HAS_NO_EXIT)) |
| { |
| /* |
| * This ELSE block has no exit and the corresponding IF block |
| * has no exit either. Therefore, the parent node has no exit. |
| */ |
| Op->Asl.Parent->Asl.CompileFlags |= NODE_HAS_NO_EXIT; |
| } |
| break; |
| |
| |
| default: |
| |
| if ((Op->Asl.CompileFlags & NODE_HAS_NO_EXIT) && |
| (Op->Asl.Parent)) |
| { |
| /* If this node has no exit, then the parent has no exit either */ |
| |
| Op->Asl.Parent->Asl.CompileFlags |= NODE_HAS_NO_EXIT; |
| } |
| break; |
| } |
| |
| return AE_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnMethodTypingWalkBegin |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Descending callback for the typing walk. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AnMethodTypingWalkBegin ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| |
| return AE_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnMethodTypingWalkEnd |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Ascending callback for typing walk. Complete the method |
| * return analysis. Check methods for: |
| * 1) Initialized local variables |
| * 2) Valid arguments |
| * 3) Return types |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AnMethodTypingWalkEnd ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| UINT32 ThisNodeBtype; |
| |
| |
| switch (Op->Asl.ParseOpcode) |
| { |
| case PARSEOP_METHOD: |
| |
| Op->Asl.CompileFlags |= NODE_METHOD_TYPED; |
| break; |
| |
| case PARSEOP_RETURN: |
| |
| if ((Op->Asl.Child) && |
| (Op->Asl.Child->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG)) |
| { |
| ThisNodeBtype = AnGetBtype (Op->Asl.Child); |
| |
| if ((Op->Asl.Child->Asl.ParseOpcode == PARSEOP_METHODCALL) && |
| (ThisNodeBtype == (ACPI_UINT32_MAX -1))) |
| { |
| /* |
| * The called method is untyped at this time (typically a |
| * forward reference). |
| * |
| * Check for a recursive method call first. |
| */ |
| if (Op->Asl.ParentMethod != Op->Asl.Child->Asl.Node->Op) |
| { |
| /* We must type the method here */ |
| |
| TrWalkParseTree (Op->Asl.Child->Asl.Node->Op, |
| ASL_WALK_VISIT_TWICE, AnMethodTypingWalkBegin, |
| AnMethodTypingWalkEnd, NULL); |
| |
| ThisNodeBtype = AnGetBtype (Op->Asl.Child); |
| } |
| } |
| |
| /* Returns a value, save the value type */ |
| |
| if (Op->Asl.ParentMethod) |
| { |
| Op->Asl.ParentMethod->Asl.AcpiBtype |= ThisNodeBtype; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| return AE_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnCheckMethodReturnValue |
| * |
| * PARAMETERS: Op - Parent |
| * OpInfo - Parent info |
| * ArgOp - Method invocation op |
| * RequiredBtypes - What caller requires |
| * ThisNodeBtype - What this node returns (if anything) |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Check a method invocation for 1) A return value and if it does |
| * in fact return a value, 2) check the type of the return value. |
| * |
| ******************************************************************************/ |
| |
| static void |
| AnCheckMethodReturnValue ( |
| ACPI_PARSE_OBJECT *Op, |
| const ACPI_OPCODE_INFO *OpInfo, |
| ACPI_PARSE_OBJECT *ArgOp, |
| UINT32 RequiredBtypes, |
| UINT32 ThisNodeBtype) |
| { |
| ACPI_PARSE_OBJECT *OwningOp; |
| ACPI_NAMESPACE_NODE *Node; |
| |
| |
| Node = ArgOp->Asl.Node; |
| |
| |
| /* Examine the parent op of this method */ |
| |
| OwningOp = Node->Op; |
| if (OwningOp->Asl.CompileFlags & NODE_METHOD_NO_RETVAL) |
| { |
| /* Method NEVER returns a value */ |
| |
| AslError (ASL_ERROR, ASL_MSG_NO_RETVAL, Op, Op->Asl.ExternalName); |
| } |
| else if (OwningOp->Asl.CompileFlags & NODE_METHOD_SOME_NO_RETVAL) |
| { |
| /* Method SOMETIMES returns a value, SOMETIMES not */ |
| |
| AslError (ASL_WARNING, ASL_MSG_SOME_NO_RETVAL, Op, Op->Asl.ExternalName); |
| } |
| else if (!(ThisNodeBtype & RequiredBtypes)) |
| { |
| /* Method returns a value, but the type is wrong */ |
| |
| AnFormatBtype (StringBuffer, ThisNodeBtype); |
| AnFormatBtype (StringBuffer2, RequiredBtypes); |
| |
| |
| /* |
| * The case where the method does not return any value at all |
| * was already handled in the namespace cross reference |
| * -- Only issue an error if the method in fact returns a value, |
| * but it is of the wrong type |
| */ |
| if (ThisNodeBtype != 0) |
| { |
| sprintf (MsgBuffer, |
| "Method returns [%s], %s operator requires [%s]", |
| StringBuffer, OpInfo->Name, StringBuffer2); |
| |
| AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, MsgBuffer); |
| } |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnOperandTypecheckWalkBegin |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Descending callback for the analysis walk. Check methods for: |
| * 1) Initialized local variables |
| * 2) Valid arguments |
| * 3) Return types |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AnOperandTypecheckWalkBegin ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| |
| return AE_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnOperandTypecheckWalkEnd |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Ascending callback for analysis walk. Complete method |
| * return analysis. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AnOperandTypecheckWalkEnd ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| const ACPI_OPCODE_INFO *OpInfo; |
| UINT32 RuntimeArgTypes; |
| UINT32 RuntimeArgTypes2; |
| UINT32 RequiredBtypes; |
| UINT32 ThisNodeBtype; |
| UINT32 CommonBtypes; |
| UINT32 OpcodeClass; |
| ACPI_PARSE_OBJECT *ArgOp; |
| UINT32 ArgType; |
| |
| |
| switch (Op->Asl.AmlOpcode) |
| { |
| case AML_RAW_DATA_BYTE: |
| case AML_RAW_DATA_WORD: |
| case AML_RAW_DATA_DWORD: |
| case AML_RAW_DATA_QWORD: |
| case AML_RAW_DATA_BUFFER: |
| case AML_RAW_DATA_CHAIN: |
| case AML_PACKAGE_LENGTH: |
| case AML_UNASSIGNED_OPCODE: |
| case AML_DEFAULT_ARG_OP: |
| |
| /* Ignore the internal (compiler-only) AML opcodes */ |
| |
| return (AE_OK); |
| |
| default: |
| break; |
| } |
| |
| OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); |
| if (!OpInfo) |
| { |
| return (AE_OK); |
| } |
| |
| ArgOp = Op->Asl.Child; |
| RuntimeArgTypes = OpInfo->RuntimeArgs; |
| OpcodeClass = OpInfo->Class; |
| |
| #ifdef ASL_ERROR_NAMED_OBJECT_IN_WHILE |
| /* |
| * Update 11/2008: In practice, we can't perform this check. A simple |
| * analysis is not sufficient. Also, it can cause errors when compiling |
| * disassembled code because of the way Switch operators are implemented |
| * (a While(One) loop with a named temp variable created within.) |
| */ |
| |
| /* |
| * If we are creating a named object, check if we are within a while loop |
| * by checking if the parent is a WHILE op. This is a simple analysis, but |
| * probably sufficient for many cases. |
| * |
| * Allow Scope(), Buffer(), and Package(). |
| */ |
| if (((OpcodeClass == AML_CLASS_NAMED_OBJECT) && (Op->Asl.AmlOpcode != AML_SCOPE_OP)) || |
| ((OpcodeClass == AML_CLASS_CREATE) && (OpInfo->Flags & AML_NSNODE))) |
| { |
| if (Op->Asl.Parent->Asl.AmlOpcode == AML_WHILE_OP) |
| { |
| AslError (ASL_ERROR, ASL_MSG_NAMED_OBJECT_IN_WHILE, Op, NULL); |
| } |
| } |
| #endif |
| |
| /* |
| * Special case for control opcodes IF/RETURN/WHILE since they |
| * have no runtime arg list (at this time) |
| */ |
| switch (Op->Asl.AmlOpcode) |
| { |
| case AML_IF_OP: |
| case AML_WHILE_OP: |
| case AML_RETURN_OP: |
| |
| if (ArgOp->Asl.ParseOpcode == PARSEOP_METHODCALL) |
| { |
| /* Check for an internal method */ |
| |
| if (AnIsInternalMethod (ArgOp)) |
| { |
| return (AE_OK); |
| } |
| |
| /* The lone arg is a method call, check it */ |
| |
| RequiredBtypes = AnMapArgTypeToBtype (ARGI_INTEGER); |
| if (Op->Asl.AmlOpcode == AML_RETURN_OP) |
| { |
| RequiredBtypes = 0xFFFFFFFF; |
| } |
| |
| ThisNodeBtype = AnGetBtype (ArgOp); |
| if (ThisNodeBtype == ACPI_UINT32_MAX) |
| { |
| return (AE_OK); |
| } |
| AnCheckMethodReturnValue (Op, OpInfo, ArgOp, |
| RequiredBtypes, ThisNodeBtype); |
| } |
| return (AE_OK); |
| |
| default: |
| break; |
| } |
| |
| /* Ignore the non-executable opcodes */ |
| |
| if (RuntimeArgTypes == ARGI_INVALID_OPCODE) |
| { |
| return (AE_OK); |
| } |
| |
| switch (OpcodeClass) |
| { |
| case AML_CLASS_EXECUTE: |
| case AML_CLASS_CREATE: |
| case AML_CLASS_CONTROL: |
| case AML_CLASS_RETURN_VALUE: |
| |
| /* TBD: Change class or fix typechecking for these */ |
| |
| if ((Op->Asl.AmlOpcode == AML_BUFFER_OP) || |
| (Op->Asl.AmlOpcode == AML_PACKAGE_OP) || |
| (Op->Asl.AmlOpcode == AML_VAR_PACKAGE_OP)) |
| { |
| break; |
| } |
| |
| /* Reverse the runtime argument list */ |
| |
| RuntimeArgTypes2 = 0; |
| while ((ArgType = GET_CURRENT_ARG_TYPE (RuntimeArgTypes))) |
| { |
| RuntimeArgTypes2 <<= ARG_TYPE_WIDTH; |
| RuntimeArgTypes2 |= ArgType; |
| INCREMENT_ARG_LIST (RuntimeArgTypes); |
| } |
| |
| while ((ArgType = GET_CURRENT_ARG_TYPE (RuntimeArgTypes2))) |
| { |
| RequiredBtypes = AnMapArgTypeToBtype (ArgType); |
| |
| ThisNodeBtype = AnGetBtype (ArgOp); |
| if (ThisNodeBtype == ACPI_UINT32_MAX) |
| { |
| goto NextArgument; |
| } |
| |
| /* Examine the arg based on the required type of the arg */ |
| |
| switch (ArgType) |
| { |
| case ARGI_TARGETREF: |
| |
| if (ArgOp->Asl.ParseOpcode == PARSEOP_ZERO) |
| { |
| /* ZERO is the placeholder for "don't store result" */ |
| |
| ThisNodeBtype = RequiredBtypes; |
| break; |
| } |
| |
| if (ArgOp->Asl.ParseOpcode == PARSEOP_INTEGER) |
| { |
| /* |
| * This is the case where an original reference to a resource |
| * descriptor field has been replaced by an (Integer) offset. |
| * These named fields are supported at compile-time only; |
| * the names are not passed to the interpreter (via the AML). |
| */ |
| if ((ArgOp->Asl.Node->Type == ACPI_TYPE_LOCAL_RESOURCE_FIELD) || |
| (ArgOp->Asl.Node->Type == ACPI_TYPE_LOCAL_RESOURCE)) |
| { |
| AslError (ASL_ERROR, ASL_MSG_RESOURCE_FIELD, ArgOp, NULL); |
| } |
| else |
| { |
| AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, NULL); |
| } |
| break; |
| } |
| |
| if ((ArgOp->Asl.ParseOpcode == PARSEOP_METHODCALL) || |
| (ArgOp->Asl.ParseOpcode == PARSEOP_DEREFOF)) |
| { |
| break; |
| } |
| |
| ThisNodeBtype = RequiredBtypes; |
| break; |
| |
| |
| case ARGI_REFERENCE: /* References */ |
| case ARGI_INTEGER_REF: |
| case ARGI_OBJECT_REF: |
| case ARGI_DEVICE_REF: |
| |
| switch (ArgOp->Asl.ParseOpcode) |
| { |
| case PARSEOP_LOCAL0: |
| case PARSEOP_LOCAL1: |
| case PARSEOP_LOCAL2: |
| case PARSEOP_LOCAL3: |
| case PARSEOP_LOCAL4: |
| case PARSEOP_LOCAL5: |
| case PARSEOP_LOCAL6: |
| case PARSEOP_LOCAL7: |
| |
| /* TBD: implement analysis of current value (type) of the local */ |
| /* For now, just treat any local as a typematch */ |
| |
| /*ThisNodeBtype = RequiredBtypes;*/ |
| break; |
| |
| case PARSEOP_ARG0: |
| case PARSEOP_ARG1: |
| case PARSEOP_ARG2: |
| case PARSEOP_ARG3: |
| case PARSEOP_ARG4: |
| case PARSEOP_ARG5: |
| case PARSEOP_ARG6: |
| |
| /* Hard to analyze argument types, sow we won't */ |
| /* For now, just treat any arg as a typematch */ |
| |
| /* ThisNodeBtype = RequiredBtypes; */ |
| break; |
| |
| case PARSEOP_DEBUG: |
| break; |
| |
| case PARSEOP_REFOF: |
| case PARSEOP_INDEX: |
| default: |
| break; |
| |
| } |
| break; |
| |
| case ARGI_INTEGER: |
| default: |
| break; |
| } |
| |
| |
| CommonBtypes = ThisNodeBtype & RequiredBtypes; |
| |
| if (ArgOp->Asl.ParseOpcode == PARSEOP_METHODCALL) |
| { |
| if (AnIsInternalMethod (ArgOp)) |
| { |
| return (AE_OK); |
| } |
| |
| /* Check a method call for a valid return value */ |
| |
| AnCheckMethodReturnValue (Op, OpInfo, ArgOp, |
| RequiredBtypes, ThisNodeBtype); |
| } |
| |
| /* |
| * Now check if the actual type(s) match at least one |
| * bit to the required type |
| */ |
| else if (!CommonBtypes) |
| { |
| /* No match -- this is a type mismatch error */ |
| |
| AnFormatBtype (StringBuffer, ThisNodeBtype); |
| AnFormatBtype (StringBuffer2, RequiredBtypes); |
| |
| sprintf (MsgBuffer, "[%s] found, %s operator requires [%s]", |
| StringBuffer, OpInfo->Name, StringBuffer2); |
| |
| AslError (ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgOp, MsgBuffer); |
| } |
| |
| NextArgument: |
| ArgOp = ArgOp->Asl.Next; |
| INCREMENT_ARG_LIST (RuntimeArgTypes2); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| return (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnIsResultUsed |
| * |
| * PARAMETERS: Op - Parent op for the operator |
| * |
| * RETURN: TRUE if result from this operation is actually consumed |
| * |
| * DESCRIPTION: Determine if the function result value from an operator is |
| * used. |
| * |
| ******************************************************************************/ |
| |
| BOOLEAN |
| AnIsResultUsed ( |
| ACPI_PARSE_OBJECT *Op) |
| { |
| ACPI_PARSE_OBJECT *Parent; |
| |
| |
| switch (Op->Asl.ParseOpcode) |
| { |
| case PARSEOP_INCREMENT: |
| case PARSEOP_DECREMENT: |
| |
| /* These are standalone operators, no return value */ |
| |
| return (TRUE); |
| |
| default: |
| break; |
| } |
| |
| /* Examine parent to determine if the return value is used */ |
| |
| Parent = Op->Asl.Parent; |
| switch (Parent->Asl.ParseOpcode) |
| { |
| /* If/While - check if the operator is the predicate */ |
| |
| case PARSEOP_IF: |
| case PARSEOP_WHILE: |
| |
| /* First child is the predicate */ |
| |
| if (Parent->Asl.Child == Op) |
| { |
| return (TRUE); |
| } |
| return (FALSE); |
| |
| /* Not used if one of these is the parent */ |
| |
| case PARSEOP_METHOD: |
| case PARSEOP_DEFINITIONBLOCK: |
| case PARSEOP_ELSE: |
| |
| return (FALSE); |
| |
| default: |
| /* Any other type of parent means that the result is used */ |
| |
| return (TRUE); |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnOtherSemanticAnalysisWalkBegin |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Descending callback for the analysis walk. Checks for |
| * miscellaneous issues in the code. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AnOtherSemanticAnalysisWalkBegin ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| ACPI_PARSE_OBJECT *ArgNode; |
| ACPI_PARSE_OBJECT *PrevArgNode = NULL; |
| const ACPI_OPCODE_INFO *OpInfo; |
| |
| |
| OpInfo = AcpiPsGetOpcodeInfo (Op->Asl.AmlOpcode); |
| |
| /* |
| * Determine if an execution class operator actually does something by |
| * checking if it has a target and/or the function return value is used. |
| * (Target is optional, so a standalone statement can actually do nothing.) |
| */ |
| if ((OpInfo->Class == AML_CLASS_EXECUTE) && |
| (OpInfo->Flags & AML_HAS_RETVAL) && |
| (!AnIsResultUsed (Op))) |
| { |
| if (OpInfo->Flags & AML_HAS_TARGET) |
| { |
| /* |
| * Find the target node, it is always the last child. If the traget |
| * is not specified in the ASL, a default node of type Zero was |
| * created by the parser. |
| */ |
| ArgNode = Op->Asl.Child; |
| while (ArgNode->Asl.Next) |
| { |
| PrevArgNode = ArgNode; |
| ArgNode = ArgNode->Asl.Next; |
| } |
| |
| /* Divide() is the only weird case, it has two targets */ |
| |
| if (Op->Asl.AmlOpcode == AML_DIVIDE_OP) |
| { |
| if ((ArgNode->Asl.ParseOpcode == PARSEOP_ZERO) && |
| (PrevArgNode->Asl.ParseOpcode == PARSEOP_ZERO)) |
| { |
| AslError (ASL_WARNING, ASL_MSG_RESULT_NOT_USED, Op, Op->Asl.ExternalName); |
| } |
| } |
| else if (ArgNode->Asl.ParseOpcode == PARSEOP_ZERO) |
| { |
| AslError (ASL_WARNING, ASL_MSG_RESULT_NOT_USED, Op, Op->Asl.ExternalName); |
| } |
| } |
| else |
| { |
| /* |
| * Has no target and the result is not used. Only a couple opcodes |
| * can have this combination. |
| */ |
| switch (Op->Asl.ParseOpcode) |
| { |
| case PARSEOP_ACQUIRE: |
| case PARSEOP_WAIT: |
| case PARSEOP_LOADTABLE: |
| break; |
| |
| default: |
| AslError (ASL_WARNING, ASL_MSG_RESULT_NOT_USED, Op, Op->Asl.ExternalName); |
| break; |
| } |
| } |
| } |
| |
| |
| /* |
| * Semantic checks for individual ASL operators |
| */ |
| switch (Op->Asl.ParseOpcode) |
| { |
| case PARSEOP_ACQUIRE: |
| case PARSEOP_WAIT: |
| /* |
| * Emit a warning if the timeout parameter for these operators is not |
| * ACPI_WAIT_FOREVER, and the result value from the operator is not |
| * checked, meaning that a timeout could happen, but the code |
| * would not know about it. |
| */ |
| |
| /* First child is the namepath, 2nd child is timeout */ |
| |
| ArgNode = Op->Asl.Child; |
| ArgNode = ArgNode->Asl.Next; |
| |
| /* |
| * Check for the WAIT_FOREVER case - defined by the ACPI spec to be |
| * 0xFFFF or greater |
| */ |
| if (((ArgNode->Asl.ParseOpcode == PARSEOP_WORDCONST) || |
| (ArgNode->Asl.ParseOpcode == PARSEOP_INTEGER)) && |
| (ArgNode->Asl.Value.Integer >= (UINT64) ACPI_WAIT_FOREVER)) |
| { |
| break; |
| } |
| |
| /* |
| * The operation could timeout. If the return value is not used |
| * (indicates timeout occurred), issue a warning |
| */ |
| if (!AnIsResultUsed (Op)) |
| { |
| AslError (ASL_WARNING, ASL_MSG_TIMEOUT, ArgNode, Op->Asl.ExternalName); |
| } |
| break; |
| |
| case PARSEOP_CREATEFIELD: |
| /* |
| * Check for a zero Length (NumBits) operand. NumBits is the 3rd operand |
| */ |
| ArgNode = Op->Asl.Child; |
| ArgNode = ArgNode->Asl.Next; |
| ArgNode = ArgNode->Asl.Next; |
| |
| if ((ArgNode->Asl.ParseOpcode == PARSEOP_ZERO) || |
| ((ArgNode->Asl.ParseOpcode == PARSEOP_INTEGER) && |
| (ArgNode->Asl.Value.Integer == 0))) |
| { |
| AslError (ASL_ERROR, ASL_MSG_NON_ZERO, ArgNode, NULL); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| return AE_OK; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AnOtherSemanticAnalysisWalkEnd |
| * |
| * PARAMETERS: ASL_WALK_CALLBACK |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Ascending callback for analysis walk. Complete method |
| * return analysis. |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AnOtherSemanticAnalysisWalkEnd ( |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 Level, |
| void *Context) |
| { |
| |
| return AE_OK; |
| |
| } |
| |
| |
| #ifdef ACPI_OBSOLETE_FUNCTIONS |
| /******************************************************************************* |
| * |
| * FUNCTION: AnMapBtypeToEtype |
| * |
| * PARAMETERS: Btype - Bitfield of ACPI types |
| * |
| * RETURN: The Etype corresponding the the Btype |
| * |
| * DESCRIPTION: Convert a bitfield type to an encoded type |
| * |
| ******************************************************************************/ |
| |
| UINT32 |
| AnMapBtypeToEtype ( |
| UINT32 Btype) |
| { |
| UINT32 i; |
| UINT32 Etype; |
| |
| |
| if (Btype == 0) |
| { |
| return 0; |
| } |
| |
| Etype = 1; |
| for (i = 1; i < Btype; i *= 2) |
| { |
| Etype++; |
| } |
| |
| return (Etype); |
| } |
| #endif |
| |