/****************************************************************************** * * Module Name: aslexternal - ASL External opcode compiler support * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2021, 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. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ #include "aslcompiler.h" #include "aslcompiler.y.h" #include "acparser.h" #include "amlcode.h" #include "acnamesp.h" #define _COMPONENT ACPI_COMPILER ACPI_MODULE_NAME ("aslexternal") /* Local prototypes */ static void ExInsertArgCount ( ACPI_PARSE_OBJECT *Op); static void ExMoveExternals ( ACPI_PARSE_OBJECT *DefinitionBlockOp); /******************************************************************************* * * FUNCTION: ExDoExternal * * PARAMETERS: Op - Current Parse node * * RETURN: None * * DESCRIPTION: Add an External() definition to the global list. This list * is used to generate External opcodes. * ******************************************************************************/ void ExDoExternal ( ACPI_PARSE_OBJECT *Op) { ACPI_PARSE_OBJECT *ListOp; ACPI_PARSE_OBJECT *Prev; ACPI_PARSE_OBJECT *Next; ACPI_PARSE_OBJECT *ArgCountOp; ACPI_PARSE_OBJECT *TypeOp; ACPI_PARSE_OBJECT *ExternTypeOp = Op->Asl.Child->Asl.Next; UINT32 ExternType; UINT8 ParamCount = ASL_EXTERNAL_METHOD_UNKNOWN_PARAMS; UINT32 ParamTypes[ACPI_METHOD_NUM_ARGS]; ExternType = AnMapObjTypeToBtype (ExternTypeOp); if (ExternType != ACPI_BTYPE_METHOD) { /* * If this is not a method, it has zero parameters this local variable * is used only for methods */ ParamCount = 0; } /* * The parser allows optional parameter return types regardless of the * type. Check object type keyword emit error if optional parameter/return * types exist. * * Check the parameter return type */ TypeOp = ExternTypeOp->Asl.Next; if (TypeOp->Asl.Child) { /* Ignore the return type for now. */ (void) MtProcessTypeOp (TypeOp->Asl.Child); if (ExternType != ACPI_BTYPE_METHOD) { sprintf (AslGbl_MsgBuffer, "Found type [%s]", AcpiUtGetTypeName(ExternType)); AslError (ASL_ERROR, ASL_MSG_EXTERN_INVALID_RET_TYPE, TypeOp, AslGbl_MsgBuffer); } } /* Check the parameter types */ TypeOp = TypeOp->Asl.Next; if (TypeOp->Asl.Child) { ParamCount = MtProcessParameterTypeList (TypeOp->Asl.Child, ParamTypes); if (ExternType != ACPI_BTYPE_METHOD) { sprintf (AslGbl_MsgBuffer, "Found type [%s]", AcpiUtGetTypeName(ExternType)); AslError (ASL_ERROR, ASL_MSG_EXTERN_INVALID_PARAM_TYPE, TypeOp, AslGbl_MsgBuffer); } } ArgCountOp = Op->Asl.Child->Asl.Next->Asl.Next; ArgCountOp->Asl.AmlOpcode = AML_RAW_DATA_BYTE; ArgCountOp->Asl.ParseOpcode = PARSEOP_BYTECONST; ArgCountOp->Asl.Value.Integer = ParamCount; UtSetParseOpName (ArgCountOp); /* Create new list node of arbitrary type */ ListOp = TrAllocateOp (PARSEOP_DEFAULT_ARG); /* Store External node as child */ ListOp->Asl.Child = Op; ListOp->Asl.Next = NULL; if (AslGbl_ExternalsListHead) { /* Link new External to end of list */ Prev = AslGbl_ExternalsListHead; Next = Prev; while (Next) { Prev = Next; Next = Next->Asl.Next; } Prev->Asl.Next = ListOp; } else { AslGbl_ExternalsListHead = ListOp; } } /******************************************************************************* * * FUNCTION: ExInsertArgCount * * PARAMETERS: Op - Op for a method invocation * * RETURN: None * * DESCRIPTION: Obtain the number of arguments for a control method -- from * the actual invocation. * ******************************************************************************/ static void ExInsertArgCount ( ACPI_PARSE_OBJECT *Op) { ACPI_PARSE_OBJECT *Next; ACPI_PARSE_OBJECT *NameOp; ACPI_PARSE_OBJECT *Child; ACPI_PARSE_OBJECT *ArgCountOp; char * ExternalName; char * CallName; UINT16 ArgCount = 0; ACPI_STATUS Status; CallName = AcpiNsGetNormalizedPathname (Op->Asl.Node, TRUE); Next = AslGbl_ExternalsListHead; while (Next) { ArgCount = 0; /* Skip if External node already handled */ if (Next->Asl.Child->Asl.CompileFlags & OP_VISITED) { Next = Next->Asl.Next; continue; } NameOp = Next->Asl.Child->Asl.Child; ExternalName = AcpiNsGetNormalizedPathname (NameOp->Asl.Node, TRUE); if (strcmp (CallName, ExternalName)) { ACPI_FREE (ExternalName); Next = Next->Asl.Next; continue; } Next->Asl.Child->Asl.CompileFlags |= OP_VISITED; /* * Since we will reposition Externals to the Root, set Namepath * to the fully qualified name and recalculate the aml length */ Status = UtInternalizeName (ExternalName, &NameOp->Asl.Value.String); ACPI_FREE (ExternalName); if (ACPI_FAILURE (Status)) { AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, NULL, "- Could not Internalize External"); break; } NameOp->Asl.AmlLength = strlen (NameOp->Asl.Value.String); /* Get argument count */ Child = Op->Asl.Child; while (Child) { ArgCount++; Child = Child->Asl.Next; } /* Setup ArgCount operand */ ArgCountOp = Next->Asl.Child->Asl.Child->Asl.Next->Asl.Next; ArgCountOp->Asl.Value.Integer = ArgCount; break; } ACPI_FREE (CallName); } /******************************************************************************* * * FUNCTION: ExAmlExternalWalkBegin * * PARAMETERS: ASL_WALK_CALLBACK * * RETURN: None * * DESCRIPTION: Parse tree walk to create external opcode list for methods. * ******************************************************************************/ ACPI_STATUS ExAmlExternalWalkBegin ( ACPI_PARSE_OBJECT *Op, UINT32 Level, void *Context) { /* External list head saved in the definition block op */ if (Op->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK) { AslGbl_ExternalsListHead = Op->Asl.Value.Arg; } if (!AslGbl_ExternalsListHead) { return (AE_OK); } if (Op->Asl.ParseOpcode != PARSEOP_METHODCALL) { return (AE_OK); } /* * The NameOp child under an ExternalOp gets turned into PARSE_METHODCALL * by XfNamespaceLocateBegin(). Ignore these. */ if (Op->Asl.Parent && Op->Asl.Parent->Asl.ParseOpcode == PARSEOP_EXTERNAL) { return (AE_OK); } ExInsertArgCount (Op); return (AE_OK); } /******************************************************************************* * * FUNCTION: ExAmlExternalWalkEnd * * PARAMETERS: ASL_WALK_CALLBACK * * RETURN: None * * DESCRIPTION: Parse tree walk to create external opcode list for methods. * Here, we just want to catch the case where a definition block * has been completed. Then we move all of the externals into * a single block in the parse tree and thus the AML code. * ******************************************************************************/ ACPI_STATUS ExAmlExternalWalkEnd ( ACPI_PARSE_OBJECT *Op, UINT32 Level, void *Context) { if (Op->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK) { /* * Process any existing external list. (Support for * multiple definition blocks in a single file/compile) */ ExMoveExternals (Op); AslGbl_ExternalsListHead = NULL; } return (AE_OK); } /******************************************************************************* * * FUNCTION: ExMoveExternals * * PARAMETERS: DefinitionBlockOp - Op for current definition block * * RETURN: None * * DESCRIPTION: Move all externals present in the source file into a single * block of AML code, surrounded by an "If (0)" to prevent * AML interpreters from attempting to execute the External * opcodes. * ******************************************************************************/ static void ExMoveExternals ( ACPI_PARSE_OBJECT *DefinitionBlockOp) { ACPI_PARSE_OBJECT *ParentOp; ACPI_PARSE_OBJECT *ExternalOp; ACPI_PARSE_OBJECT *PredicateOp; ACPI_PARSE_OBJECT *NextOp; ACPI_PARSE_OBJECT *Prev; ACPI_PARSE_OBJECT *Next; char *ExternalName; ACPI_OBJECT_TYPE ObjType; ACPI_STATUS Status; UINT32 i; if (!AslGbl_ExternalsListHead) { return; } /* Remove the External nodes from the tree */ NextOp = AslGbl_ExternalsListHead; while (NextOp) { /* * The External is stored in child pointer of each node in the * list */ ExternalOp = NextOp->Asl.Child; /* Get/set the fully qualified name */ ExternalName = AcpiNsGetNormalizedPathname (ExternalOp->Asl.Node, TRUE); ExternalOp->Asl.ExternalName = ExternalName; ExternalOp->Asl.Namepath = ExternalName; /* Set line numbers (for listings, etc.) */ ExternalOp->Asl.LineNumber = 0; ExternalOp->Asl.LogicalLineNumber = 0; Next = ExternalOp->Asl.Child; Next->Asl.LineNumber = 0; Next->Asl.LogicalLineNumber = 0; if (Next->Asl.ParseOpcode == PARSEOP_NAMESEG) { Next->Asl.ParseOpcode = PARSEOP_NAMESTRING; } Next->Asl.ExternalName = ExternalName; Status = UtInternalizeName (ExternalName, &Next->Asl.Value.String); if (ACPI_FAILURE (Status)) { AslError (ASL_ERROR, ASL_MSG_COMPILER_INTERNAL, Next, "Could not internalize namestring"); return; } Next->Asl.AmlLength = strlen (Next->Asl.Value.String); Next = Next->Asl.Next; Next->Asl.LineNumber = 0; Next->Asl.LogicalLineNumber = 0; Next = Next->Asl.Next; Next->Asl.LineNumber = 0; Next->Asl.LogicalLineNumber = 0; Next = Next->Asl.Next; Next->Asl.LineNumber = 0; Next->Asl.LogicalLineNumber = 0; ParentOp = ExternalOp->Asl.Parent; Prev = Next = ParentOp->Asl.Child; /* Now find the External node's position in parse tree */ while (Next != ExternalOp) { Prev = Next; Next = Next->Asl.Next; } /* Remove the External from the parse tree */ if (Prev == ExternalOp) { /* External was the first child node */ ParentOp->Asl.Child = ExternalOp->Asl.Next; } Prev->Asl.Next = ExternalOp->Asl.Next; ExternalOp->Asl.Next = NULL; ExternalOp->Asl.Parent = AslGbl_ExternalsListHead; /* Point the External to the next in the list */ if (NextOp->Asl.Next) { ExternalOp->Asl.Next = NextOp->Asl.Next->Asl.Child; } NextOp = NextOp->Asl.Next; } /* * Loop again to remove MethodObj Externals for which * a MethodCall was not found (dead external reference) */ Prev = AslGbl_ExternalsListHead->Asl.Child; Next = Prev; while (Next) { ObjType = (ACPI_OBJECT_TYPE) Next->Asl.Child->Asl.Next->Asl.Value.Integer; if (ObjType == ACPI_TYPE_METHOD && !(Next->Asl.CompileFlags & OP_VISITED)) { if (Next == Prev) { AslGbl_ExternalsListHead->Asl.Child = Next->Asl.Next; Next->Asl.Next = NULL; Prev = AslGbl_ExternalsListHead->Asl.Child; Next = Prev; continue; } else { Prev->Asl.Next = Next->Asl.Next; Next->Asl.Next = NULL; Next = Prev->Asl.Next; continue; } } Prev = Next; Next = Next->Asl.Next; } /* If list is now empty, don't bother to make If (0) block */ if (!AslGbl_ExternalsListHead->Asl.Child) { return; } /* Convert Gbl_ExternalsListHead parent to If(). */ AslGbl_ExternalsListHead->Asl.ParseOpcode = PARSEOP_IF; AslGbl_ExternalsListHead->Asl.AmlOpcode = AML_IF_OP; AslGbl_ExternalsListHead->Asl.CompileFlags = OP_AML_PACKAGE; UtSetParseOpName (AslGbl_ExternalsListHead); /* Create a Zero op for the If predicate */ PredicateOp = TrAllocateOp (PARSEOP_ZERO); PredicateOp->Asl.AmlOpcode = AML_ZERO_OP; PredicateOp->Asl.Parent = AslGbl_ExternalsListHead; PredicateOp->Asl.Child = NULL; PredicateOp->Asl.Next = AslGbl_ExternalsListHead->Asl.Child; AslGbl_ExternalsListHead->Asl.Child = PredicateOp; /* Set line numbers (for listings, etc.) */ AslGbl_ExternalsListHead->Asl.LineNumber = 0; AslGbl_ExternalsListHead->Asl.LogicalLineNumber = 0; PredicateOp->Asl.LineNumber = 0; PredicateOp->Asl.LogicalLineNumber = 0; /* Insert block back in the list */ Prev = DefinitionBlockOp->Asl.Child; Next = Prev; /* Find last default arg */ for (i = 0; i < 6; i++) { Prev = Next; Next = Prev->Asl.Next; } if (Next) { /* Definition Block is not empty */ AslGbl_ExternalsListHead->Asl.Next = Next; } else { /* Definition Block is empty. */ AslGbl_ExternalsListHead->Asl.Next = NULL; } Prev->Asl.Next = AslGbl_ExternalsListHead; AslGbl_ExternalsListHead->Asl.Parent = Prev->Asl.Parent; }