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Diffstat (limited to 'sys/contrib/dev/acpica/psscope.c')
| -rw-r--r-- | sys/contrib/dev/acpica/psscope.c | 375 |
1 files changed, 375 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/psscope.c b/sys/contrib/dev/acpica/psscope.c new file mode 100644 index 000000000000..47b61dca4f26 --- /dev/null +++ b/sys/contrib/dev/acpica/psscope.c @@ -0,0 +1,375 @@ +/****************************************************************************** + * + * Module Name: psscope - Parser scope stack management routines + * $Revision: 21 $ + * + *****************************************************************************/ + +/****************************************************************************** + * + * 1. Copyright Notice + * + * Some or all of this work - Copyright (c) 1999, 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 "acparser.h" + +#define _COMPONENT PARSER + 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; + + + FUNCTION_TRACE_PTR ("PsInitScope", RootOp); + + + Scope = AcpiCmCreateGenericState (); + if (!Scope) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + + 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; + + + FUNCTION_TRACE_PTR ("PsPushScope", Op); + + + Scope = AcpiCmCreateGenericState (); + if (!Scope) + { + return (AE_NO_MEMORY); + } + + + Scope->ParseScope.Op = Op; + Scope->ParseScope.ArgList = RemainingArgs; + Scope->ParseScope.ArgCount = ArgCount; + Scope->ParseScope.PkgEnd = ParserState->PkgEnd; + + /* Push onto scope stack */ + + AcpiCmPushGenericState (&ParserState->Scope, Scope); + + + if (ArgCount == ACPI_VAR_ARGS) + { + /* multiple arguments */ + + Scope->ParseScope.ArgEnd = ParserState->PkgEnd; + } + + else + { + /* single argument */ + + Scope->ParseScope.ArgEnd = ACPI_MAX_AML; + } + + 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; + + + FUNCTION_TRACE ("PsPopScope"); + + /* + * Only pop the scope if there is in fact a next scope + */ + if (Scope->Common.Next) + { + Scope = AcpiCmPopGenericState (&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 */ + + AcpiCmDeleteGenericState (Scope); + } + + else + { + /* empty parse stack, prepare to fetch next opcode */ + + *Op = NULL; + *ArgList = 0; + *ArgCount = 0; + } + + + DEBUG_PRINT (TRACE_PARSE, + ("PsPopScope: Popped Op %p Args %d\n", *Op, *ArgCount)); + return_VOID; +} + + +/******************************************************************************* + * + * FUNCTION: AcpiPsCleanupScope + * + * PARAMETERS: ParserState - Current parser state object + * + * RETURN: Status + * + * DESCRIPTION: Destroy available list, remaining stack levels, and return + * root scope + * + ******************************************************************************/ + +void +AcpiPsCleanupScope ( + ACPI_PARSE_STATE *ParserState) +{ + ACPI_GENERIC_STATE *Scope; + + FUNCTION_TRACE_PTR ("PsCleanupScope", ParserState); + + + if (!ParserState) + { + return; + } + + + /* Delete anything on the scope stack */ + + while (ParserState->Scope) + { + Scope = AcpiCmPopGenericState (&ParserState->Scope); + AcpiCmDeleteGenericState (Scope); + } + + return_VOID; +} + |