diff options
Diffstat (limited to 'sys/contrib/dev/acpica/components/parser/psscope.c')
| -rw-r--r-- | sys/contrib/dev/acpica/components/parser/psscope.c | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/components/parser/psscope.c b/sys/contrib/dev/acpica/components/parser/psscope.c new file mode 100644 index 0000000..3aa102bd --- /dev/null +++ b/sys/contrib/dev/acpica/components/parser/psscope.c @@ -0,0 +1,301 @@ +/****************************************************************************** + * + * Module Name: psscope - Parser scope stack management routines + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2013, Intel Corp. + * All rights reserved. + * + * 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. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * 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 MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. + */ + + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> +#include <contrib/dev/acpica/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; +} |
