| 0,0 → 1,374 |
|---|
| /****************************************************************************** |
| * |
| * Module Name: psscope - Parser scope stack management routines |
| * |
| *****************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 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 "acpi.h" |
| #include "accommon.h" |
| #include "acparser.h" |
| |
| #define _COMPONENT ACPI_PARSER |
| ACPI_MODULE_NAME ("psscope") |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiPsGetParentScope |
| * |
| * PARAMETERS: ParserState - Current parser state object |
| * |
| * RETURN: Pointer to an Op object |
| * |
| * DESCRIPTION: Get parent of current op being parsed |
| * |
| ******************************************************************************/ |
| |
| ACPI_PARSE_OBJECT * |
| AcpiPsGetParentScope ( |
| ACPI_PARSE_STATE *ParserState) |
| { |
| |
| return (ParserState->Scope->ParseScope.Op); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiPsHasCompletedScope |
| * |
| * PARAMETERS: ParserState - Current parser state object |
| * |
| * RETURN: Boolean, TRUE = scope completed. |
| * |
| * DESCRIPTION: Is parsing of current argument complete? Determined by |
| * 1) AML pointer is at or beyond the end of the scope |
| * 2) The scope argument count has reached zero. |
| * |
| ******************************************************************************/ |
| |
| BOOLEAN |
| AcpiPsHasCompletedScope ( |
| ACPI_PARSE_STATE *ParserState) |
| { |
| |
| return ((BOOLEAN) |
| ((ParserState->Aml >= ParserState->Scope->ParseScope.ArgEnd || |
| !ParserState->Scope->ParseScope.ArgCount))); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiPsInitScope |
| * |
| * PARAMETERS: ParserState - Current parser state object |
| * Root - the Root Node of this new scope |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Allocate and init a new scope object |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiPsInitScope ( |
| ACPI_PARSE_STATE *ParserState, |
| ACPI_PARSE_OBJECT *RootOp) |
| { |
| ACPI_GENERIC_STATE *Scope; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (PsInitScope, RootOp); |
| |
| |
| Scope = AcpiUtCreateGenericState (); |
| if (!Scope) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| Scope->Common.DescriptorType = ACPI_DESC_TYPE_STATE_RPSCOPE; |
| Scope->ParseScope.Op = RootOp; |
| Scope->ParseScope.ArgCount = ACPI_VAR_ARGS; |
| Scope->ParseScope.ArgEnd = ParserState->AmlEnd; |
| Scope->ParseScope.PkgEnd = ParserState->AmlEnd; |
| |
| ParserState->Scope = Scope; |
| ParserState->StartOp = RootOp; |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiPsPushScope |
| * |
| * PARAMETERS: ParserState - Current parser state object |
| * Op - Current op to be pushed |
| * RemainingArgs - List of args remaining |
| * ArgCount - Fixed or variable number of args |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Push current op to begin parsing its argument |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiPsPushScope ( |
| ACPI_PARSE_STATE *ParserState, |
| ACPI_PARSE_OBJECT *Op, |
| UINT32 RemainingArgs, |
| UINT32 ArgCount) |
| { |
| ACPI_GENERIC_STATE *Scope; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (PsPushScope, Op); |
| |
| |
| Scope = AcpiUtCreateGenericState (); |
| if (!Scope) |
| { |
| return_ACPI_STATUS (AE_NO_MEMORY); |
| } |
| |
| Scope->Common.DescriptorType = ACPI_DESC_TYPE_STATE_PSCOPE; |
| Scope->ParseScope.Op = Op; |
| Scope->ParseScope.ArgList = RemainingArgs; |
| Scope->ParseScope.ArgCount = ArgCount; |
| Scope->ParseScope.PkgEnd = ParserState->PkgEnd; |
| |
| /* Push onto scope stack */ |
| |
| AcpiUtPushGenericState (&ParserState->Scope, Scope); |
| |
| if (ArgCount == ACPI_VAR_ARGS) |
| { |
| /* Multiple arguments */ |
| |
| Scope->ParseScope.ArgEnd = ParserState->PkgEnd; |
| } |
| else |
| { |
| /* Single argument */ |
| |
| Scope->ParseScope.ArgEnd = ACPI_TO_POINTER (ACPI_MAX_PTR); |
| } |
| |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiPsPopScope |
| * |
| * PARAMETERS: ParserState - Current parser state object |
| * Op - Where the popped op is returned |
| * ArgList - Where the popped "next argument" is |
| * returned |
| * ArgCount - Count of objects in ArgList |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Return to parsing a previous op |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiPsPopScope ( |
| ACPI_PARSE_STATE *ParserState, |
| ACPI_PARSE_OBJECT **Op, |
| UINT32 *ArgList, |
| UINT32 *ArgCount) |
| { |
| ACPI_GENERIC_STATE *Scope = ParserState->Scope; |
| |
| |
| ACPI_FUNCTION_TRACE (PsPopScope); |
| |
| |
| /* Only pop the scope if there is in fact a next scope */ |
| |
| if (Scope->Common.Next) |
| { |
| Scope = AcpiUtPopGenericState (&ParserState->Scope); |
| |
| /* Return to parsing previous op */ |
| |
| *Op = Scope->ParseScope.Op; |
| *ArgList = Scope->ParseScope.ArgList; |
| *ArgCount = Scope->ParseScope.ArgCount; |
| ParserState->PkgEnd = Scope->ParseScope.PkgEnd; |
| |
| /* All done with this scope state structure */ |
| |
| AcpiUtDeleteGenericState (Scope); |
| } |
| else |
| { |
| /* Empty parse stack, prepare to fetch next opcode */ |
| |
| *Op = NULL; |
| *ArgList = 0; |
| *ArgCount = 0; |
| } |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, |
| "Popped Op %p Args %X\n", *Op, *ArgCount)); |
| return_VOID; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiPsCleanupScope |
| * |
| * PARAMETERS: ParserState - Current parser state object |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Destroy available list, remaining stack levels, and return |
| * root scope |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiPsCleanupScope ( |
| ACPI_PARSE_STATE *ParserState) |
| { |
| ACPI_GENERIC_STATE *Scope; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (PsCleanupScope, ParserState); |
| |
| |
| if (!ParserState) |
| { |
| return_VOID; |
| } |
| |
| /* Delete anything on the scope stack */ |
| |
| while (ParserState->Scope) |
| { |
| Scope = AcpiUtPopGenericState (&ParserState->Scope); |
| AcpiUtDeleteGenericState (Scope); |
| } |
| |
| return_VOID; |
| } |
| |