diff options
Diffstat (limited to 'sys/contrib/dev/acpica/executer/exstoren.c')
| -rw-r--r-- | sys/contrib/dev/acpica/executer/exstoren.c | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/executer/exstoren.c b/sys/contrib/dev/acpica/executer/exstoren.c new file mode 100644 index 0000000..0810560d --- /dev/null +++ b/sys/contrib/dev/acpica/executer/exstoren.c @@ -0,0 +1,386 @@ + +/****************************************************************************** + * + * Module Name: exstoren - AML Interpreter object store support, + * Store to Node (namespace object) + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999 - 2009, 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. + * + *****************************************************************************/ + +#define __EXSTOREN_C__ + +#include "acpi.h" +#include "accommon.h" +#include "acinterp.h" +#include "amlcode.h" + + +#define _COMPONENT ACPI_EXECUTER + ACPI_MODULE_NAME ("exstoren") + + +/******************************************************************************* + * + * FUNCTION: AcpiExResolveObject + * + * PARAMETERS: SourceDescPtr - Pointer to the source object + * TargetType - Current type of the target + * WalkState - Current walk state + * + * RETURN: Status, resolved object in SourceDescPtr. + * + * DESCRIPTION: Resolve an object. If the object is a reference, dereference + * it and return the actual object in the SourceDescPtr. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExResolveObject ( + ACPI_OPERAND_OBJECT **SourceDescPtr, + ACPI_OBJECT_TYPE TargetType, + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT *SourceDesc = *SourceDescPtr; + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE (ExResolveObject); + + + /* Ensure we have a Target that can be stored to */ + + switch (TargetType) + { + case ACPI_TYPE_BUFFER_FIELD: + case ACPI_TYPE_LOCAL_REGION_FIELD: + case ACPI_TYPE_LOCAL_BANK_FIELD: + case ACPI_TYPE_LOCAL_INDEX_FIELD: + /* + * These cases all require only Integers or values that + * can be converted to Integers (Strings or Buffers) + */ + + case ACPI_TYPE_INTEGER: + case ACPI_TYPE_STRING: + case ACPI_TYPE_BUFFER: + + /* + * Stores into a Field/Region or into a Integer/Buffer/String + * are all essentially the same. This case handles the + * "interchangeable" types Integer, String, and Buffer. + */ + if (SourceDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) + { + /* Resolve a reference object first */ + + Status = AcpiExResolveToValue (SourceDescPtr, WalkState); + if (ACPI_FAILURE (Status)) + { + break; + } + } + + /* For CopyObject, no further validation necessary */ + + if (WalkState->Opcode == AML_COPY_OP) + { + break; + } + + /* Must have a Integer, Buffer, or String */ + + if ((SourceDesc->Common.Type != ACPI_TYPE_INTEGER) && + (SourceDesc->Common.Type != ACPI_TYPE_BUFFER) && + (SourceDesc->Common.Type != ACPI_TYPE_STRING) && + !((SourceDesc->Common.Type == ACPI_TYPE_LOCAL_REFERENCE) && + (SourceDesc->Reference.Class== ACPI_REFCLASS_TABLE))) + { + /* Conversion successful but still not a valid type */ + + ACPI_ERROR ((AE_INFO, + "Cannot assign type %s to %s (must be type Int/Str/Buf)", + AcpiUtGetObjectTypeName (SourceDesc), + AcpiUtGetTypeName (TargetType))); + Status = AE_AML_OPERAND_TYPE; + } + break; + + + case ACPI_TYPE_LOCAL_ALIAS: + case ACPI_TYPE_LOCAL_METHOD_ALIAS: + + /* + * All aliases should have been resolved earlier, during the + * operand resolution phase. + */ + ACPI_ERROR ((AE_INFO, "Store into an unresolved Alias object")); + Status = AE_AML_INTERNAL; + break; + + + case ACPI_TYPE_PACKAGE: + default: + + /* + * All other types than Alias and the various Fields come here, + * including the untyped case - ACPI_TYPE_ANY. + */ + break; + } + + return_ACPI_STATUS (Status); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiExStoreObjectToObject + * + * PARAMETERS: SourceDesc - Object to store + * DestDesc - Object to receive a copy of the source + * NewDesc - New object if DestDesc is obsoleted + * WalkState - Current walk state + * + * RETURN: Status + * + * DESCRIPTION: "Store" an object to another object. This may include + * converting the source type to the target type (implicit + * conversion), and a copy of the value of the source to + * the target. + * + * The Assignment of an object to another (not named) object + * is handled here. + * The Source passed in will replace the current value (if any) + * with the input value. + * + * When storing into an object the data is converted to the + * target object type then stored in the object. This means + * that the target object type (for an initialized target) will + * not be changed by a store operation. + * + * This module allows destination types of Number, String, + * Buffer, and Package. + * + * Assumes parameters are already validated. NOTE: SourceDesc + * resolution (from a reference object) must be performed by + * the caller if necessary. + * + ******************************************************************************/ + +ACPI_STATUS +AcpiExStoreObjectToObject ( + ACPI_OPERAND_OBJECT *SourceDesc, + ACPI_OPERAND_OBJECT *DestDesc, + ACPI_OPERAND_OBJECT **NewDesc, + ACPI_WALK_STATE *WalkState) +{ + ACPI_OPERAND_OBJECT *ActualSrcDesc; + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE_PTR (ExStoreObjectToObject, SourceDesc); + + + ActualSrcDesc = SourceDesc; + if (!DestDesc) + { + /* + * There is no destination object (An uninitialized node or + * package element), so we can simply copy the source object + * creating a new destination object + */ + Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, NewDesc, WalkState); + return_ACPI_STATUS (Status); + } + + if (SourceDesc->Common.Type != DestDesc->Common.Type) + { + /* + * The source type does not match the type of the destination. + * Perform the "implicit conversion" of the source to the current type + * of the target as per the ACPI specification. + * + * If no conversion performed, ActualSrcDesc = SourceDesc. + * Otherwise, ActualSrcDesc is a temporary object to hold the + * converted object. + */ + Status = AcpiExConvertToTargetType (DestDesc->Common.Type, + SourceDesc, &ActualSrcDesc, WalkState); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + if (SourceDesc == ActualSrcDesc) + { + /* + * No conversion was performed. Return the SourceDesc as the + * new object. + */ + *NewDesc = SourceDesc; + return_ACPI_STATUS (AE_OK); + } + } + + /* + * We now have two objects of identical types, and we can perform a + * copy of the *value* of the source object. + */ + switch (DestDesc->Common.Type) + { + case ACPI_TYPE_INTEGER: + + DestDesc->Integer.Value = ActualSrcDesc->Integer.Value; + + /* Truncate value if we are executing from a 32-bit ACPI table */ + + AcpiExTruncateFor32bitTable (DestDesc); + break; + + case ACPI_TYPE_STRING: + + Status = AcpiExStoreStringToString (ActualSrcDesc, DestDesc); + break; + + case ACPI_TYPE_BUFFER: + + Status = AcpiExStoreBufferToBuffer (ActualSrcDesc, DestDesc); + break; + + case ACPI_TYPE_PACKAGE: + + Status = AcpiUtCopyIobjectToIobject (ActualSrcDesc, &DestDesc, + WalkState); + break; + + default: + /* + * All other types come here. + */ + ACPI_WARNING ((AE_INFO, "Store into type %s not implemented", + AcpiUtGetObjectTypeName (DestDesc))); + + Status = AE_NOT_IMPLEMENTED; + break; + } + + if (ActualSrcDesc != SourceDesc) + { + /* Delete the intermediate (temporary) source object */ + + AcpiUtRemoveReference (ActualSrcDesc); + } + + *NewDesc = DestDesc; + return_ACPI_STATUS (Status); +} + + |
