/****************************************************************************** * * Module Name: exconcat - Concatenate-type AML operators * *****************************************************************************/ /****************************************************************************** * * 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 "acpi.h" #include "accommon.h" #include "acinterp.h" #include "amlresrc.h" #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("exconcat") /* Local Prototypes */ static ACPI_STATUS AcpiExConvertToObjectTypeString ( ACPI_OPERAND_OBJECT *ObjDesc, ACPI_OPERAND_OBJECT **ResultDesc); /******************************************************************************* * * FUNCTION: AcpiExDoConcatenate * * PARAMETERS: Operand0 - First source object * Operand1 - Second source object * ActualReturnDesc - Where to place the return object * WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Concatenate two objects with the ACPI-defined conversion * rules as necessary. * NOTE: * Per the ACPI spec (up to 6.1), Concatenate only supports Integer, * String, and Buffer objects. However, we support all objects here * as an extension. This improves the usefulness of both Concatenate * and the Printf/Fprintf macros. The extension returns a string * describing the object type for the other objects. * 02/2016. * ******************************************************************************/ ACPI_STATUS AcpiExDoConcatenate ( ACPI_OPERAND_OBJECT *Operand0, ACPI_OPERAND_OBJECT *Operand1, ACPI_OPERAND_OBJECT **ActualReturnDesc, ACPI_WALK_STATE *WalkState) { ACPI_OPERAND_OBJECT *LocalOperand0 = Operand0; ACPI_OPERAND_OBJECT *LocalOperand1 = Operand1; ACPI_OPERAND_OBJECT *TempOperand1 = NULL; ACPI_OPERAND_OBJECT *ReturnDesc; char *Buffer; ACPI_OBJECT_TYPE Operand0Type; ACPI_OBJECT_TYPE Operand1Type; ACPI_STATUS Status; ACPI_FUNCTION_TRACE (ExDoConcatenate); /* Operand 0 preprocessing */ switch (Operand0->Common.Type) { case ACPI_TYPE_INTEGER: case ACPI_TYPE_STRING: case ACPI_TYPE_BUFFER: Operand0Type = Operand0->Common.Type; break; default: /* For all other types, get the "object type" string */ Status = AcpiExConvertToObjectTypeString ( Operand0, &LocalOperand0); if (ACPI_FAILURE (Status)) { goto Cleanup; } Operand0Type = ACPI_TYPE_STRING; break; } /* Operand 1 preprocessing */ switch (Operand1->Common.Type) { case ACPI_TYPE_INTEGER: case ACPI_TYPE_STRING: case ACPI_TYPE_BUFFER: Operand1Type = Operand1->Common.Type; break; default: /* For all other types, get the "object type" string */ Status = AcpiExConvertToObjectTypeString ( Operand1, &LocalOperand1); if (ACPI_FAILURE (Status)) { goto Cleanup; } Operand1Type = ACPI_TYPE_STRING; break; } /* * Convert the second operand if necessary. The first operand (0) * determines the type of the second operand (1) (See the Data Types * section of the ACPI specification). Both object types are * guaranteed to be either Integer/String/Buffer by the operand * resolution mechanism. */ switch (Operand0Type) { case ACPI_TYPE_INTEGER: Status = AcpiExConvertToInteger (LocalOperand1, &TempOperand1, ACPI_IMPLICIT_CONVERSION); break; case ACPI_TYPE_BUFFER: Status = AcpiExConvertToBuffer (LocalOperand1, &TempOperand1); break; case ACPI_TYPE_STRING: switch (Operand1Type) { case ACPI_TYPE_INTEGER: case ACPI_TYPE_STRING: case ACPI_TYPE_BUFFER: /* Other types have already been converted to string */ Status = AcpiExConvertToString ( LocalOperand1, &TempOperand1, ACPI_IMPLICIT_CONVERT_HEX); break; default: Status = AE_OK; break; } break; default: ACPI_ERROR ((AE_INFO, "Invalid object type: 0x%X", Operand0->Common.Type)); Status = AE_AML_INTERNAL; } if (ACPI_FAILURE (Status)) { goto Cleanup; } /* Take care with any newly created operand objects */ if ((LocalOperand1 != Operand1) && (LocalOperand1 != TempOperand1)) { AcpiUtRemoveReference (LocalOperand1); } LocalOperand1 = TempOperand1; /* * Both operands are now known to be the same object type * (Both are Integer, String, or Buffer), and we can now perform * the concatenation. * * There are three cases to handle, as per the ACPI spec: * * 1) Two Integers concatenated to produce a new Buffer * 2) Two Strings concatenated to produce a new String * 3) Two Buffers concatenated to produce a new Buffer */ switch (Operand0Type) { case ACPI_TYPE_INTEGER: /* Result of two Integers is a Buffer */ /* Need enough buffer space for two integers */ ReturnDesc = AcpiUtCreateBufferObject ( (ACPI_SIZE) ACPI_MUL_2 (AcpiGbl_IntegerByteWidth)); if (!ReturnDesc) { Status = AE_NO_MEMORY; goto Cleanup; } Buffer = (char *) ReturnDesc->Buffer.Pointer; /* Copy the first integer, LSB first */ memcpy (Buffer, &Operand0->Integer.Value, AcpiGbl_IntegerByteWidth); /* Copy the second integer (LSB first) after the first */ memcpy (Buffer + AcpiGbl_IntegerByteWidth, &LocalOperand1->Integer.Value, AcpiGbl_IntegerByteWidth); break; case ACPI_TYPE_STRING: /* Result of two Strings is a String */ ReturnDesc = AcpiUtCreateStringObject ( ((ACPI_SIZE) LocalOperand0->String.Length + LocalOperand1->String.Length)); if (!ReturnDesc) { Status = AE_NO_MEMORY; goto Cleanup; } Buffer = ReturnDesc->String.Pointer; /* Concatenate the strings */ strcpy (Buffer, LocalOperand0->String.Pointer); strcat (Buffer, LocalOperand1->String.Pointer); break; case ACPI_TYPE_BUFFER: /* Result of two Buffers is a Buffer */ ReturnDesc = AcpiUtCreateBufferObject ( ((ACPI_SIZE) Operand0->Buffer.Length + LocalOperand1->Buffer.Length)); if (!ReturnDesc) { Status = AE_NO_MEMORY; goto Cleanup; } Buffer = (char *) ReturnDesc->Buffer.Pointer; /* Concatenate the buffers */ memcpy (Buffer, Operand0->Buffer.Pointer, Operand0->Buffer.Length); memcpy (Buffer + Operand0->Buffer.Length, LocalOperand1->Buffer.Pointer, LocalOperand1->Buffer.Length); break; default: /* Invalid object type, should not happen here */ ACPI_ERROR ((AE_INFO, "Invalid object type: 0x%X", Operand0->Common.Type)); Status = AE_AML_INTERNAL; goto Cleanup; } *ActualReturnDesc = ReturnDesc; Cleanup: if (LocalOperand0 != Operand0) { AcpiUtRemoveReference (LocalOperand0); } if (LocalOperand1 != Operand1) { AcpiUtRemoveReference (LocalOperand1); } return_ACPI_STATUS (Status); } /******************************************************************************* * * FUNCTION: AcpiExConvertToObjectTypeString * * PARAMETERS: ObjDesc - Object to be converted * ReturnDesc - Where to place the return object * * RETURN: Status * * DESCRIPTION: Convert an object of arbitrary type to a string object that * contains the namestring for the object. Used for the * concatenate operator. * ******************************************************************************/ static ACPI_STATUS AcpiExConvertToObjectTypeString ( ACPI_OPERAND_OBJECT *ObjDesc, ACPI_OPERAND_OBJECT **ResultDesc) { ACPI_OPERAND_OBJECT *ReturnDesc; const char *TypeString; TypeString = AcpiUtGetTypeName (ObjDesc->Common.Type); ReturnDesc = AcpiUtCreateStringObject ( ((ACPI_SIZE) strlen (TypeString) + 9)); /* 9 For "[ Object]" */ if (!ReturnDesc) { return (AE_NO_MEMORY); } strcpy (ReturnDesc->String.Pointer, "["); strcat (ReturnDesc->String.Pointer, TypeString); strcat (ReturnDesc->String.Pointer, " Object]"); *ResultDesc = ReturnDesc; return (AE_OK); } /******************************************************************************* * * FUNCTION: AcpiExConcatTemplate * * PARAMETERS: Operand0 - First source object * Operand1 - Second source object * ActualReturnDesc - Where to place the return object * WalkState - Current walk state * * RETURN: Status * * DESCRIPTION: Concatenate two resource templates * ******************************************************************************/ ACPI_STATUS AcpiExConcatTemplate ( ACPI_OPERAND_OBJECT *Operand0, ACPI_OPERAND_OBJECT *Operand1, ACPI_OPERAND_OBJECT **ActualReturnDesc, ACPI_WALK_STATE *WalkState) { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *ReturnDesc; UINT8 *NewBuf; UINT8 *EndTag; ACPI_SIZE Length0; ACPI_SIZE Length1; ACPI_SIZE NewLength; ACPI_FUNCTION_TRACE (ExConcatTemplate); /* * Find the EndTag descriptor in each resource template. * Note1: returned pointers point TO the EndTag, not past it. * Note2: zero-length buffers are allowed; treated like one EndTag */ /* Get the length of the first resource template */ Status = AcpiUtGetResourceEndTag (Operand0, &EndTag); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Length0 = ACPI_PTR_DIFF (EndTag, Operand0->Buffer.Pointer); /* Get the length of the second resource template */ Status = AcpiUtGetResourceEndTag (Operand1, &EndTag); if (ACPI_FAILURE (Status)) { return_ACPI_STATUS (Status); } Length1 = ACPI_PTR_DIFF (EndTag, Operand1->Buffer.Pointer); /* Combine both lengths, minimum size will be 2 for EndTag */ NewLength = Length0 + Length1 + sizeof (AML_RESOURCE_END_TAG); /* Create a new buffer object for the result (with one EndTag) */ ReturnDesc = AcpiUtCreateBufferObject (NewLength); if (!ReturnDesc) { return_ACPI_STATUS (AE_NO_MEMORY); } /* * Copy the templates to the new buffer, 0 first, then 1 follows. One * EndTag descriptor is copied from Operand1. */ NewBuf = ReturnDesc->Buffer.Pointer; memcpy (NewBuf, Operand0->Buffer.Pointer, Length0); memcpy (NewBuf + Length0, Operand1->Buffer.Pointer, Length1); /* Insert EndTag and set the checksum to zero, means "ignore checksum" */ NewBuf[NewLength - 1] = 0; NewBuf[NewLength - 2] = ACPI_RESOURCE_NAME_END_TAG | 1; /* Return the completed resource template */ *ActualReturnDesc = ReturnDesc; return_ACPI_STATUS (AE_OK); }