/****************************************************************************** * * Module Name: dmextern - Support for External() ASL statements * *****************************************************************************/ /****************************************************************************** * * 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 #include #include #include #include /* * This module is used for application-level code (iASL disassembler) only. * * It contains the code to create and emit any necessary External() ASL * statements for the module being disassembled. */ #define _COMPONENT ACPI_CA_DISASSEMBLER ACPI_MODULE_NAME ("dmextern") /* * This table maps ACPI_OBJECT_TYPEs to the corresponding ASL * ObjectTypeKeyword. Used to generate typed external declarations */ static const char *AcpiGbl_DmTypeNames[] = { /* 00 */ "", /* Type ANY */ /* 01 */ ", IntObj", /* 02 */ ", StrObj", /* 03 */ ", BuffObj", /* 04 */ ", PkgObj", /* 05 */ ", FieldUnitObj", /* 06 */ ", DeviceObj", /* 07 */ ", EventObj", /* 08 */ ", MethodObj", /* 09 */ ", MutexObj", /* 10 */ ", OpRegionObj", /* 11 */ ", PowerResObj", /* 12 */ ", ProcessorObj", /* 13 */ ", ThermalZoneObj", /* 14 */ ", BuffFieldObj", /* 15 */ ", DDBHandleObj", /* 16 */ "", /* Debug object */ /* 17 */ ", FieldUnitObj", /* 18 */ ", FieldUnitObj", /* 19 */ ", FieldUnitObj" }; /* Local prototypes */ static const char * AcpiDmGetObjectTypeName ( ACPI_OBJECT_TYPE Type); static char * AcpiDmNormalizeParentPrefix ( ACPI_PARSE_OBJECT *Op, char *Path); /******************************************************************************* * * FUNCTION: AcpiDmGetObjectTypeName * * PARAMETERS: Type - An ACPI_OBJECT_TYPE * * RETURN: Pointer to a string * * DESCRIPTION: Map an object type to the ASL object type string. * ******************************************************************************/ static const char * AcpiDmGetObjectTypeName ( ACPI_OBJECT_TYPE Type) { if (Type == ACPI_TYPE_LOCAL_SCOPE) { Type = ACPI_TYPE_DEVICE; } else if (Type > ACPI_TYPE_LOCAL_INDEX_FIELD) { return (""); } return (AcpiGbl_DmTypeNames[Type]); } /******************************************************************************* * * FUNCTION: AcpiDmNormalizeParentPrefix * * PARAMETERS: Op - Parse op * Path - Path with parent prefix * * RETURN: The full pathname to the object (from the namespace root) * * DESCRIPTION: Returns the full pathname of a path with parent prefix * The caller must free the fullpath returned. * ******************************************************************************/ static char * AcpiDmNormalizeParentPrefix ( ACPI_PARSE_OBJECT *Op, char *Path) { ACPI_NAMESPACE_NODE *Node; char *Fullpath; char *ParentPath; ACPI_SIZE Length; /* Search upwards in the parse tree until we reach a namespace node */ while (Op) { if (Op->Common.Node) { break; } Op = Op->Common.Parent; } if (!Op) { return (NULL); } /* * Find the actual parent node for the reference: * Remove all carat prefixes from the input path. * There may be multiple parent prefixes (For example, ^^^M000) */ Node = Op->Common.Node; while (Node && (*Path == (UINT8) AML_PARENT_PREFIX)) { Node = AcpiNsGetParentNode (Node); Path++; } if (!Node) { return (NULL); } /* Get the full pathname for the parent node */ ParentPath = AcpiNsGetExternalPathname (Node); if (!ParentPath) { return (NULL); } Length = (ACPI_STRLEN (ParentPath) + ACPI_STRLEN (Path) + 1); Fullpath = ACPI_ALLOCATE_ZEROED (Length); if (!Fullpath) { goto Cleanup; } /* * Concatenate parent fullpath and path. For example, * parent fullpath "\_SB_", Path "^INIT", Fullpath "\_SB_.INIT" * * Copy the parent path */ ACPI_STRCAT (Fullpath, ParentPath); /* Add dot separator (don't need dot if parent fullpath is a single "\") */ if (ParentPath[1]) { ACPI_STRCAT (Fullpath, "."); } /* Copy child path (carat parent prefix(es) were skipped above) */ ACPI_STRCAT (Fullpath, Path); Cleanup: ACPI_FREE (ParentPath); return (Fullpath); } /******************************************************************************* * * FUNCTION: AcpiDmAddToExternalList * * PARAMETERS: Op - Current parser Op * Path - Internal (AML) path to the object * Type - ACPI object type to be added * Value - Arg count if adding a Method object * * RETURN: None * * DESCRIPTION: Insert a new name into the global list of Externals which * will in turn be later emitted as an External() declaration * in the disassembled output. * ******************************************************************************/ void AcpiDmAddToExternalList ( ACPI_PARSE_OBJECT *Op, char *Path, UINT8 Type, UINT32 Value) { char *ExternalPath; char *Fullpath = NULL; ACPI_EXTERNAL_LIST *NewExternal; ACPI_EXTERNAL_LIST *NextExternal; ACPI_EXTERNAL_LIST *PrevExternal = NULL; ACPI_STATUS Status; if (!Path) { return; } /* Externalize the ACPI path */ Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Path, NULL, &ExternalPath); if (ACPI_FAILURE (Status)) { return; } /* Get the full pathname from root if "Path" has a parent prefix */ if (*Path == (UINT8) AML_PARENT_PREFIX) { Fullpath = AcpiDmNormalizeParentPrefix (Op, ExternalPath); if (Fullpath) { /* Set new external path */ ACPI_FREE (ExternalPath); ExternalPath = Fullpath; } } /* Check all existing externals to ensure no duplicates */ NextExternal = AcpiGbl_ExternalList; while (NextExternal) { if (!ACPI_STRCMP (ExternalPath, NextExternal->Path)) { /* Duplicate method, check that the Value (ArgCount) is the same */ if ((NextExternal->Type == ACPI_TYPE_METHOD) && (NextExternal->Value != Value)) { ACPI_ERROR ((AE_INFO, "Argument count mismatch for method %s %d %d", NextExternal->Path, NextExternal->Value, Value)); } /* Allow upgrade of type from ANY */ else if (NextExternal->Type == ACPI_TYPE_ANY) { NextExternal->Type = Type; NextExternal->Value = Value; } ACPI_FREE (ExternalPath); return; } NextExternal = NextExternal->Next; } /* Allocate and init a new External() descriptor */ NewExternal = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_LIST)); if (!NewExternal) { ACPI_FREE (ExternalPath); return; } NewExternal->Path = ExternalPath; NewExternal->Type = Type; NewExternal->Value = Value; NewExternal->Length = (UINT16) ACPI_STRLEN (ExternalPath); /* Was the external path with parent prefix normalized to a fullpath? */ if (Fullpath == ExternalPath) { /* Get new internal path */ Status = AcpiNsInternalizeName (ExternalPath, &Path); if (ACPI_FAILURE (Status)) { ACPI_FREE (ExternalPath); ACPI_FREE (NewExternal); return; } /* Set flag to indicate External->InternalPath need to be freed */ NewExternal->Flags |= ACPI_IPATH_ALLOCATED; } NewExternal->InternalPath = Path; /* Link the new descriptor into the global list, ordered by string length */ NextExternal = AcpiGbl_ExternalList; while (NextExternal) { if (NewExternal->Length <= NextExternal->Length) { if (PrevExternal) { PrevExternal->Next = NewExternal; } else { AcpiGbl_ExternalList = NewExternal; } NewExternal->Next = NextExternal; return; } PrevExternal = NextExternal; NextExternal = NextExternal->Next; } if (PrevExternal) { PrevExternal->Next = NewExternal; } else { AcpiGbl_ExternalList = NewExternal; } } /******************************************************************************* * * FUNCTION: AcpiDmAddExternalsToNamespace * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Add all externals to the namespace. Allows externals to be * "resolved". * ******************************************************************************/ void AcpiDmAddExternalsToNamespace ( void) { ACPI_STATUS Status; ACPI_NAMESPACE_NODE *Node; ACPI_OPERAND_OBJECT *MethodDesc; ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList; while (External) { /* Add the external name (object) into the namespace */ Status = AcpiNsLookup (NULL, External->InternalPath, External->Type, ACPI_IMODE_LOAD_PASS1, ACPI_NS_EXTERNAL | ACPI_NS_DONT_OPEN_SCOPE, NULL, &Node); if (ACPI_FAILURE (Status)) { ACPI_EXCEPTION ((AE_INFO, Status, "while adding external to namespace [%s]", External->Path)); } else if (External->Type == ACPI_TYPE_METHOD) { /* For methods, we need to save the argument count */ MethodDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD); MethodDesc->Method.ParamCount = (UINT8) External->Value; Node->Object = MethodDesc; } External = External->Next; } } /******************************************************************************* * * FUNCTION: AcpiDmGetExternalMethodCount * * PARAMETERS: None * * RETURN: The number of control method externals in the external list * * DESCRIPTION: Return the number of method externals that have been generated. * If any control method externals have been found, we must * re-parse the entire definition block with the new information * (number of arguments for the methods.) This is limitation of * AML, we don't know the number of arguments from the control * method invocation itself. * ******************************************************************************/ UINT32 AcpiDmGetExternalMethodCount ( void) { ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList; UINT32 Count = 0; while (External) { if (External->Type == ACPI_TYPE_METHOD) { Count++; } External = External->Next; } return (Count); } /******************************************************************************* * * FUNCTION: AcpiDmClearExternalList * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Free the entire External info list * ******************************************************************************/ void AcpiDmClearExternalList ( void) { ACPI_EXTERNAL_LIST *NextExternal; while (AcpiGbl_ExternalList) { NextExternal = AcpiGbl_ExternalList->Next; ACPI_FREE (AcpiGbl_ExternalList->Path); ACPI_FREE (AcpiGbl_ExternalList); AcpiGbl_ExternalList = NextExternal; } } /******************************************************************************* * * FUNCTION: AcpiDmEmitExternals * * PARAMETERS: None * * RETURN: None * * DESCRIPTION: Emit an External() ASL statement for each of the externals in * the global external info list. * ******************************************************************************/ void AcpiDmEmitExternals ( void) { ACPI_EXTERNAL_LIST *NextExternal; if (!AcpiGbl_ExternalList) { return; } /* * Walk the list of externals (unresolved references) * found during the AML parsing */ while (AcpiGbl_ExternalList) { AcpiOsPrintf (" External (%s%s", AcpiGbl_ExternalList->Path, AcpiDmGetObjectTypeName (AcpiGbl_ExternalList->Type)); if (AcpiGbl_ExternalList->Type == ACPI_TYPE_METHOD) { AcpiOsPrintf (") // %d Arguments\n", AcpiGbl_ExternalList->Value); } else { AcpiOsPrintf (")\n"); } /* Free this external info block and move on to next external */ NextExternal = AcpiGbl_ExternalList->Next; if (AcpiGbl_ExternalList->Flags & ACPI_IPATH_ALLOCATED) { ACPI_FREE (AcpiGbl_ExternalList->InternalPath); } ACPI_FREE (AcpiGbl_ExternalList->Path); ACPI_FREE (AcpiGbl_ExternalList); AcpiGbl_ExternalList = NextExternal; } AcpiOsPrintf ("\n"); }