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Diffstat (limited to 'sys/contrib/dev/acpica/psloop.c')
| -rw-r--r-- | sys/contrib/dev/acpica/psloop.c | 1186 |
1 files changed, 0 insertions, 1186 deletions
diff --git a/sys/contrib/dev/acpica/psloop.c b/sys/contrib/dev/acpica/psloop.c deleted file mode 100644 index 6c6ce47..0000000 --- a/sys/contrib/dev/acpica/psloop.c +++ /dev/null @@ -1,1186 +0,0 @@ -/****************************************************************************** - * - * Module Name: psloop - Main AML parse loop - * $Revision: 1.16 $ - * - *****************************************************************************/ - -/****************************************************************************** - * - * 1. Copyright Notice - * - * Some or all of this work - Copyright (c) 1999 - 2007, 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. - * - *****************************************************************************/ - - -/* - * Parse the AML and build an operation tree as most interpreters, (such as - * Perl) do. Parsing is done by hand rather than with a YACC generated parser - * to tightly constrain stack and dynamic memory usage. Parsing is kept - * flexible and the code fairly compact by parsing based on a list of AML - * opcode templates in AmlOpInfo[]. - */ - -#include <contrib/dev/acpica/acpi.h> -#include <contrib/dev/acpica/acparser.h> -#include <contrib/dev/acpica/acdispat.h> -#include <contrib/dev/acpica/amlcode.h> - -#define _COMPONENT ACPI_PARSER - ACPI_MODULE_NAME ("psloop") - -static UINT32 AcpiGbl_Depth = 0; - - -/* Local prototypes */ - -static ACPI_STATUS -AcpiPsGetAmlOpcode ( - ACPI_WALK_STATE *WalkState); - -static ACPI_STATUS -AcpiPsBuildNamedOp ( - ACPI_WALK_STATE *WalkState, - UINT8 *AmlOpStart, - ACPI_PARSE_OBJECT *UnnamedOp, - ACPI_PARSE_OBJECT **Op); - -static ACPI_STATUS -AcpiPsCreateOp ( - ACPI_WALK_STATE *WalkState, - UINT8 *AmlOpStart, - ACPI_PARSE_OBJECT **NewOp); - -static ACPI_STATUS -AcpiPsGetArguments ( - ACPI_WALK_STATE *WalkState, - UINT8 *AmlOpStart, - ACPI_PARSE_OBJECT *Op); - -static ACPI_STATUS -AcpiPsCompleteOp ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT **Op, - ACPI_STATUS Status); - -static ACPI_STATUS -AcpiPsCompleteFinalOp ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT *Op, - ACPI_STATUS Status); - - -/******************************************************************************* - * - * FUNCTION: AcpiPsGetAmlOpcode - * - * PARAMETERS: WalkState - Current state - * - * RETURN: Status - * - * DESCRIPTION: Extract the next AML opcode from the input stream. - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiPsGetAmlOpcode ( - ACPI_WALK_STATE *WalkState) -{ - - ACPI_FUNCTION_TRACE_PTR (PsGetAmlOpcode, WalkState); - - - WalkState->AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->ParserState.Aml, - WalkState->ParserState.AmlStart); - WalkState->Opcode = AcpiPsPeekOpcode (&(WalkState->ParserState)); - - /* - * First cut to determine what we have found: - * 1) A valid AML opcode - * 2) A name string - * 3) An unknown/invalid opcode - */ - WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); - - switch (WalkState->OpInfo->Class) - { - case AML_CLASS_ASCII: - case AML_CLASS_PREFIX: - /* - * Starts with a valid prefix or ASCII char, this is a name - * string. Convert the bare name string to a namepath. - */ - WalkState->Opcode = AML_INT_NAMEPATH_OP; - WalkState->ArgTypes = ARGP_NAMESTRING; - break; - - case AML_CLASS_UNKNOWN: - - /* The opcode is unrecognized. Just skip unknown opcodes */ - - ACPI_ERROR ((AE_INFO, - "Found unknown opcode %X at AML address %p offset %X, ignoring", - WalkState->Opcode, WalkState->ParserState.Aml, WalkState->AmlOffset)); - - ACPI_DUMP_BUFFER (WalkState->ParserState.Aml, 128); - - /* Assume one-byte bad opcode */ - - WalkState->ParserState.Aml++; - return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); - - default: - - /* Found opcode info, this is a normal opcode */ - - WalkState->ParserState.Aml += AcpiPsGetOpcodeSize (WalkState->Opcode); - WalkState->ArgTypes = WalkState->OpInfo->ParseArgs; - break; - } - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsBuildNamedOp - * - * PARAMETERS: WalkState - Current state - * AmlOpStart - Begin of named Op in AML - * UnnamedOp - Early Op (not a named Op) - * Op - Returned Op - * - * RETURN: Status - * - * DESCRIPTION: Parse a named Op - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiPsBuildNamedOp ( - ACPI_WALK_STATE *WalkState, - UINT8 *AmlOpStart, - ACPI_PARSE_OBJECT *UnnamedOp, - ACPI_PARSE_OBJECT **Op) -{ - ACPI_STATUS Status = AE_OK; - ACPI_PARSE_OBJECT *Arg = NULL; - - - ACPI_FUNCTION_TRACE_PTR (PsBuildNamedOp, WalkState); - - - UnnamedOp->Common.Value.Arg = NULL; - UnnamedOp->Common.ArgListLength = 0; - UnnamedOp->Common.AmlOpcode = WalkState->Opcode; - - /* - * Get and append arguments until we find the node that contains - * the name (the type ARGP_NAME). - */ - while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) && - (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) != ARGP_NAME)) - { - Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState), - GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - AcpiPsAppendArg (UnnamedOp, Arg); - INCREMENT_ARG_LIST (WalkState->ArgTypes); - } - - /* - * Make sure that we found a NAME and didn't run out of arguments - */ - if (!GET_CURRENT_ARG_TYPE (WalkState->ArgTypes)) - { - return_ACPI_STATUS (AE_AML_NO_OPERAND); - } - - /* We know that this arg is a name, move to next arg */ - - INCREMENT_ARG_LIST (WalkState->ArgTypes); - - /* - * Find the object. This will either insert the object into - * the namespace or simply look it up - */ - WalkState->Op = NULL; - - Status = WalkState->DescendingCallback (WalkState, Op); - if (ACPI_FAILURE (Status)) - { - ACPI_EXCEPTION ((AE_INFO, Status, "During name lookup/catalog")); - return_ACPI_STATUS (Status); - } - - if (!*Op) - { - return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); - } - - Status = AcpiPsNextParseState (WalkState, *Op, Status); - if (ACPI_FAILURE (Status)) - { - if (Status == AE_CTRL_PENDING) - { - return_ACPI_STATUS (AE_CTRL_PARSE_PENDING); - } - return_ACPI_STATUS (Status); - } - - AcpiPsAppendArg (*Op, UnnamedOp->Common.Value.Arg); - AcpiGbl_Depth++; - - if ((*Op)->Common.AmlOpcode == AML_REGION_OP) - { - /* - * Defer final parsing of an OperationRegion body, because we don't - * have enough info in the first pass to parse it correctly (i.e., - * there may be method calls within the TermArg elements of the body.) - * - * However, we must continue parsing because the opregion is not a - * standalone package -- we don't know where the end is at this point. - * - * (Length is unknown until parse of the body complete) - */ - (*Op)->Named.Data = AmlOpStart; - (*Op)->Named.Length = 0; - } - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsCreateOp - * - * PARAMETERS: WalkState - Current state - * AmlOpStart - Op start in AML - * NewOp - Returned Op - * - * RETURN: Status - * - * DESCRIPTION: Get Op from AML - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiPsCreateOp ( - ACPI_WALK_STATE *WalkState, - UINT8 *AmlOpStart, - ACPI_PARSE_OBJECT **NewOp) -{ - ACPI_STATUS Status = AE_OK; - ACPI_PARSE_OBJECT *Op; - ACPI_PARSE_OBJECT *NamedOp = NULL; - ACPI_PARSE_OBJECT *ParentScope; - UINT8 ArgumentCount; - const ACPI_OPCODE_INFO *OpInfo; - - - ACPI_FUNCTION_TRACE_PTR (PsCreateOp, WalkState); - - - Status = AcpiPsGetAmlOpcode (WalkState); - if (Status == AE_CTRL_PARSE_CONTINUE) - { - return_ACPI_STATUS (AE_CTRL_PARSE_CONTINUE); - } - - /* Create Op structure and append to parent's argument list */ - - WalkState->OpInfo = AcpiPsGetOpcodeInfo (WalkState->Opcode); - Op = AcpiPsAllocOp (WalkState->Opcode); - if (!Op) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - if (WalkState->OpInfo->Flags & AML_NAMED) - { - Status = AcpiPsBuildNamedOp (WalkState, AmlOpStart, Op, &NamedOp); - AcpiPsFreeOp (Op); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - *NewOp = NamedOp; - return_ACPI_STATUS (AE_OK); - } - - /* Not a named opcode, just allocate Op and append to parent */ - - if (WalkState->OpInfo->Flags & AML_CREATE) - { - /* - * Backup to beginning of CreateXXXfield declaration - * BodyLength is unknown until we parse the body - */ - Op->Named.Data = AmlOpStart; - Op->Named.Length = 0; - } - - ParentScope = AcpiPsGetParentScope (&(WalkState->ParserState)); - AcpiPsAppendArg (ParentScope, Op); - - if (ParentScope) - { - OpInfo = AcpiPsGetOpcodeInfo (ParentScope->Common.AmlOpcode); - if (OpInfo->Flags & AML_HAS_TARGET) - { - ArgumentCount = AcpiPsGetArgumentCount (OpInfo->Type); - if (ParentScope->Common.ArgListLength > ArgumentCount) - { - Op->Common.Flags |= ACPI_PARSEOP_TARGET; - } - } - else if (ParentScope->Common.AmlOpcode == AML_INCREMENT_OP) - { - Op->Common.Flags |= ACPI_PARSEOP_TARGET; - } - } - - if (WalkState->DescendingCallback != NULL) - { - /* - * Find the object. This will either insert the object into - * the namespace or simply look it up - */ - WalkState->Op = *NewOp = Op; - - Status = WalkState->DescendingCallback (WalkState, &Op); - Status = AcpiPsNextParseState (WalkState, Op, Status); - if (Status == AE_CTRL_PENDING) - { - Status = AE_CTRL_PARSE_PENDING; - } - } - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsGetArguments - * - * PARAMETERS: WalkState - Current state - * AmlOpStart - Op start in AML - * Op - Current Op - * - * RETURN: Status - * - * DESCRIPTION: Get arguments for passed Op. - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiPsGetArguments ( - ACPI_WALK_STATE *WalkState, - UINT8 *AmlOpStart, - ACPI_PARSE_OBJECT *Op) -{ - ACPI_STATUS Status = AE_OK; - ACPI_PARSE_OBJECT *Arg = NULL; - - - ACPI_FUNCTION_TRACE_PTR (PsGetArguments, WalkState); - - - switch (Op->Common.AmlOpcode) - { - case AML_BYTE_OP: /* AML_BYTEDATA_ARG */ - case AML_WORD_OP: /* AML_WORDDATA_ARG */ - case AML_DWORD_OP: /* AML_DWORDATA_ARG */ - case AML_QWORD_OP: /* AML_QWORDATA_ARG */ - case AML_STRING_OP: /* AML_ASCIICHARLIST_ARG */ - - /* Fill in constant or string argument directly */ - - AcpiPsGetNextSimpleArg (&(WalkState->ParserState), - GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), Op); - break; - - case AML_INT_NAMEPATH_OP: /* AML_NAMESTRING_ARG */ - - Status = AcpiPsGetNextNamepath (WalkState, &(WalkState->ParserState), Op, 1); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - WalkState->ArgTypes = 0; - break; - - default: - /* - * Op is not a constant or string, append each argument to the Op - */ - while (GET_CURRENT_ARG_TYPE (WalkState->ArgTypes) && !WalkState->ArgCount) - { - WalkState->AmlOffset = (UINT32) ACPI_PTR_DIFF (WalkState->ParserState.Aml, - WalkState->ParserState.AmlStart); - - Status = AcpiPsGetNextArg (WalkState, &(WalkState->ParserState), - GET_CURRENT_ARG_TYPE (WalkState->ArgTypes), &Arg); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - if (Arg) - { - Arg->Common.AmlOffset = WalkState->AmlOffset; - AcpiPsAppendArg (Op, Arg); - } - - INCREMENT_ARG_LIST (WalkState->ArgTypes); - } - - - /* Special processing for certain opcodes */ - - /* TBD (remove): Temporary mechanism to disable this code if needed */ - -#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE - - if ((WalkState->PassNumber <= ACPI_IMODE_LOAD_PASS1) && - ((WalkState->ParseFlags & ACPI_PARSE_DISASSEMBLE) == 0)) - { - /* - * We want to skip If/Else/While constructs during Pass1 because we - * want to actually conditionally execute the code during Pass2. - * - * Except for disassembly, where we always want to walk the - * If/Else/While packages - */ - switch (Op->Common.AmlOpcode) - { - case AML_IF_OP: - case AML_ELSE_OP: - case AML_WHILE_OP: - - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, - "Pass1: Skipping an If/Else/While body\n")); - - /* Skip body of if/else/while in pass 1 */ - - WalkState->ParserState.Aml = WalkState->ParserState.PkgEnd; - WalkState->ArgCount = 0; - break; - - default: - break; - } - } -#endif - - switch (Op->Common.AmlOpcode) - { - case AML_METHOD_OP: - /* - * Skip parsing of control method because we don't have enough - * info in the first pass to parse it correctly. - * - * Save the length and address of the body - */ - Op->Named.Data = WalkState->ParserState.Aml; - Op->Named.Length = (UINT32) - (WalkState->ParserState.PkgEnd - WalkState->ParserState.Aml); - - /* Skip body of method */ - - WalkState->ParserState.Aml = WalkState->ParserState.PkgEnd; - WalkState->ArgCount = 0; - break; - - case AML_BUFFER_OP: - case AML_PACKAGE_OP: - case AML_VAR_PACKAGE_OP: - - if ((Op->Common.Parent) && - (Op->Common.Parent->Common.AmlOpcode == AML_NAME_OP) && - (WalkState->PassNumber <= ACPI_IMODE_LOAD_PASS2)) - { - /* - * Skip parsing of Buffers and Packages because we don't have - * enough info in the first pass to parse them correctly. - */ - Op->Named.Data = AmlOpStart; - Op->Named.Length = (UINT32) - (WalkState->ParserState.PkgEnd - AmlOpStart); - - /* Skip body */ - - WalkState->ParserState.Aml = WalkState->ParserState.PkgEnd; - WalkState->ArgCount = 0; - } - break; - - case AML_WHILE_OP: - - if (WalkState->ControlState) - { - WalkState->ControlState->Control.PackageEnd = - WalkState->ParserState.PkgEnd; - } - break; - - default: - - /* No action for all other opcodes */ - break; - } - - break; - } - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsCompleteOp - * - * PARAMETERS: WalkState - Current state - * Op - Returned Op - * Status - Parse status before complete Op - * - * RETURN: Status - * - * DESCRIPTION: Complete Op - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiPsCompleteOp ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT **Op, - ACPI_STATUS Status) -{ - ACPI_STATUS Status2; - - - ACPI_FUNCTION_TRACE_PTR (PsCompleteOp, WalkState); - - - /* - * Finished one argument of the containing scope - */ - WalkState->ParserState.Scope->ParseScope.ArgCount--; - - /* Close this Op (will result in parse subtree deletion) */ - - Status2 = AcpiPsCompleteThisOp (WalkState, *Op); - if (ACPI_FAILURE (Status2)) - { - return_ACPI_STATUS (Status2); - } - - *Op = NULL; - - switch (Status) - { - case AE_OK: - break; - - - case AE_CTRL_TRANSFER: - - /* We are about to transfer to a called method */ - - WalkState->PrevOp = NULL; - WalkState->PrevArgTypes = WalkState->ArgTypes; - return_ACPI_STATUS (Status); - - - case AE_CTRL_END: - - AcpiPsPopScope (&(WalkState->ParserState), Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - - if (*Op) - { - WalkState->Op = *Op; - WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); - WalkState->Opcode = (*Op)->Common.AmlOpcode; - - Status = WalkState->AscendingCallback (WalkState); - Status = AcpiPsNextParseState (WalkState, *Op, Status); - - Status2 = AcpiPsCompleteThisOp (WalkState, *Op); - if (ACPI_FAILURE (Status2)) - { - return_ACPI_STATUS (Status2); - } - } - - Status = AE_OK; - break; - - - case AE_CTRL_BREAK: - case AE_CTRL_CONTINUE: - - /* Pop off scopes until we find the While */ - - while (!(*Op) || ((*Op)->Common.AmlOpcode != AML_WHILE_OP)) - { - AcpiPsPopScope (&(WalkState->ParserState), Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - } - - /* Close this iteration of the While loop */ - - WalkState->Op = *Op; - WalkState->OpInfo = AcpiPsGetOpcodeInfo ((*Op)->Common.AmlOpcode); - WalkState->Opcode = (*Op)->Common.AmlOpcode; - - Status = WalkState->AscendingCallback (WalkState); - Status = AcpiPsNextParseState (WalkState, *Op, Status); - - Status2 = AcpiPsCompleteThisOp (WalkState, *Op); - if (ACPI_FAILURE (Status2)) - { - return_ACPI_STATUS (Status2); - } - - Status = AE_OK; - break; - - - case AE_CTRL_TERMINATE: - - /* Clean up */ - do - { - if (*Op) - { - Status2 = AcpiPsCompleteThisOp (WalkState, *Op); - if (ACPI_FAILURE (Status2)) - { - return_ACPI_STATUS (Status2); - } - - AcpiUtDeleteGenericState ( - AcpiUtPopGenericState (&WalkState->ControlState)); - } - - AcpiPsPopScope (&(WalkState->ParserState), Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - - } while (*Op); - - return_ACPI_STATUS (AE_OK); - - - default: /* All other non-AE_OK status */ - - do - { - if (*Op) - { - Status2 = AcpiPsCompleteThisOp (WalkState, *Op); - if (ACPI_FAILURE (Status2)) - { - return_ACPI_STATUS (Status2); - } - } - - AcpiPsPopScope (&(WalkState->ParserState), Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - - } while (*Op); - - -#if 0 - /* - * TBD: Cleanup parse ops on error - */ - if (*Op == NULL) - { - AcpiPsPopScope (ParserState, Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - } -#endif - WalkState->PrevOp = NULL; - WalkState->PrevArgTypes = WalkState->ArgTypes; - return_ACPI_STATUS (Status); - } - - /* This scope complete? */ - - if (AcpiPsHasCompletedScope (&(WalkState->ParserState))) - { - AcpiPsPopScope (&(WalkState->ParserState), Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *Op)); - } - else - { - *Op = NULL; - } - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsCompleteFinalOp - * - * PARAMETERS: WalkState - Current state - * Op - Current Op - * Status - Current parse status before complete last - * Op - * - * RETURN: Status - * - * DESCRIPTION: Complete last Op. - * - ******************************************************************************/ - -static ACPI_STATUS -AcpiPsCompleteFinalOp ( - ACPI_WALK_STATE *WalkState, - ACPI_PARSE_OBJECT *Op, - ACPI_STATUS Status) -{ - ACPI_STATUS Status2; - - - ACPI_FUNCTION_TRACE_PTR (PsCompleteFinalOp, WalkState); - - - /* - * Complete the last Op (if not completed), and clear the scope stack. - * It is easily possible to end an AML "package" with an unbounded number - * of open scopes (such as when several ASL blocks are closed with - * sequential closing braces). We want to terminate each one cleanly. - */ - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "AML package complete at Op %p\n", Op)); - do - { - if (Op) - { - if (WalkState->AscendingCallback != NULL) - { - WalkState->Op = Op; - WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); - WalkState->Opcode = Op->Common.AmlOpcode; - - Status = WalkState->AscendingCallback (WalkState); - Status = AcpiPsNextParseState (WalkState, Op, Status); - if (Status == AE_CTRL_PENDING) - { - Status = AcpiPsCompleteOp (WalkState, &Op, AE_OK); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - } - - if (Status == AE_CTRL_TERMINATE) - { - Status = AE_OK; - - /* Clean up */ - do - { - if (Op) - { - Status2 = AcpiPsCompleteThisOp (WalkState, Op); - if (ACPI_FAILURE (Status2)) - { - return_ACPI_STATUS (Status2); - } - } - - AcpiPsPopScope (&(WalkState->ParserState), &Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - - } while (Op); - - return_ACPI_STATUS (Status); - } - - else if (ACPI_FAILURE (Status)) - { - /* First error is most important */ - - (void) AcpiPsCompleteThisOp (WalkState, Op); - return_ACPI_STATUS (Status); - } - } - - Status2 = AcpiPsCompleteThisOp (WalkState, Op); - if (ACPI_FAILURE (Status2)) - { - return_ACPI_STATUS (Status2); - } - } - - AcpiPsPopScope (&(WalkState->ParserState), &Op, &WalkState->ArgTypes, - &WalkState->ArgCount); - - } while (Op); - - return_ACPI_STATUS (Status); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiPsParseLoop - * - * PARAMETERS: WalkState - Current state - * - * RETURN: Status - * - * DESCRIPTION: Parse AML (pointed to by the current parser state) and return - * a tree of ops. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiPsParseLoop ( - ACPI_WALK_STATE *WalkState) -{ - ACPI_STATUS Status = AE_OK; - ACPI_PARSE_OBJECT *Op = NULL; /* current op */ - ACPI_PARSE_STATE *ParserState; - UINT8 *AmlOpStart = NULL; - - - ACPI_FUNCTION_TRACE_PTR (PsParseLoop, WalkState); - - - if (WalkState->DescendingCallback == NULL) - { - return_ACPI_STATUS (AE_BAD_PARAMETER); - } - - ParserState = &WalkState->ParserState; - WalkState->ArgTypes = 0; - -#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) - - if (WalkState->WalkType & ACPI_WALK_METHOD_RESTART) - { - /* We are restarting a preempted control method */ - - if (AcpiPsHasCompletedScope (ParserState)) - { - /* - * We must check if a predicate to an IF or WHILE statement - * was just completed - */ - if ((ParserState->Scope->ParseScope.Op) && - ((ParserState->Scope->ParseScope.Op->Common.AmlOpcode == AML_IF_OP) || - (ParserState->Scope->ParseScope.Op->Common.AmlOpcode == AML_WHILE_OP)) && - (WalkState->ControlState) && - (WalkState->ControlState->Common.State == - ACPI_CONTROL_PREDICATE_EXECUTING)) - { - /* - * A predicate was just completed, get the value of the - * predicate and branch based on that value - */ - WalkState->Op = NULL; - Status = AcpiDsGetPredicateValue (WalkState, ACPI_TO_POINTER (TRUE)); - if (ACPI_FAILURE (Status) && - ((Status & AE_CODE_MASK) != AE_CODE_CONTROL)) - { - if (Status == AE_AML_NO_RETURN_VALUE) - { - ACPI_EXCEPTION ((AE_INFO, Status, - "Invoked method did not return a value")); - - } - - ACPI_EXCEPTION ((AE_INFO, Status, "GetPredicate Failed")); - return_ACPI_STATUS (Status); - } - - Status = AcpiPsNextParseState (WalkState, Op, Status); - } - - AcpiPsPopScope (ParserState, &Op, - &WalkState->ArgTypes, &WalkState->ArgCount); - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "Popped scope, Op=%p\n", Op)); - } - else if (WalkState->PrevOp) - { - /* We were in the middle of an op */ - - Op = WalkState->PrevOp; - WalkState->ArgTypes = WalkState->PrevArgTypes; - } - } -#endif - - /* Iterative parsing loop, while there is more AML to process: */ - - while ((ParserState->Aml < ParserState->AmlEnd) || (Op)) - { - AmlOpStart = ParserState->Aml; - if (!Op) - { - Status = AcpiPsCreateOp (WalkState, AmlOpStart, &Op); - if (ACPI_FAILURE (Status)) - { - if (Status == AE_CTRL_PARSE_CONTINUE) - { - continue; - } - - if (Status == AE_CTRL_PARSE_PENDING) - { - Status = AE_OK; - } - - Status = AcpiPsCompleteOp (WalkState, &Op, Status); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - continue; - } - - Op->Common.AmlOffset = WalkState->AmlOffset; - - if (WalkState->OpInfo) - { - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, - "Opcode %4.4X [%s] Op %p Aml %p AmlOffset %5.5X\n", - (UINT32) Op->Common.AmlOpcode, WalkState->OpInfo->Name, - Op, ParserState->Aml, Op->Common.AmlOffset)); - } - } - - - /* - * Start ArgCount at zero because we don't know if there are - * any args yet - */ - WalkState->ArgCount = 0; - - /* Are there any arguments that must be processed? */ - - if (WalkState->ArgTypes) - { - /* Get arguments */ - - Status = AcpiPsGetArguments (WalkState, AmlOpStart, Op); - if (ACPI_FAILURE (Status)) - { - Status = AcpiPsCompleteOp (WalkState, &Op, Status); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - continue; - } - } - - /* Check for arguments that need to be processed */ - - if (WalkState->ArgCount) - { - /* - * There are arguments (complex ones), push Op and - * prepare for argument - */ - Status = AcpiPsPushScope (ParserState, Op, - WalkState->ArgTypes, WalkState->ArgCount); - if (ACPI_FAILURE (Status)) - { - Status = AcpiPsCompleteOp (WalkState, &Op, Status); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - continue; - } - - Op = NULL; - continue; - } - - /* - * All arguments have been processed -- Op is complete, - * prepare for next - */ - WalkState->OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode); - if (WalkState->OpInfo->Flags & AML_NAMED) - { - if (AcpiGbl_Depth) - { - AcpiGbl_Depth--; - } - - if (Op->Common.AmlOpcode == AML_REGION_OP) - { - /* - * Skip parsing of control method or opregion body, - * because we don't have enough info in the first pass - * to parse them correctly. - * - * Completed parsing an OpRegion declaration, we now - * know the length. - */ - Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data); - } - } - - if (WalkState->OpInfo->Flags & AML_CREATE) - { - /* - * Backup to beginning of CreateXXXfield declaration (1 for - * Opcode) - * - * BodyLength is unknown until we parse the body - */ - Op->Named.Length = (UINT32) (ParserState->Aml - Op->Named.Data); - } - - /* This op complete, notify the dispatcher */ - - if (WalkState->AscendingCallback != NULL) - { - WalkState->Op = Op; - WalkState->Opcode = Op->Common.AmlOpcode; - - Status = WalkState->AscendingCallback (WalkState); - Status = AcpiPsNextParseState (WalkState, Op, Status); - if (Status == AE_CTRL_PENDING) - { - Status = AE_OK; - } - } - - Status = AcpiPsCompleteOp (WalkState, &Op, Status); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - } /* while ParserState->Aml */ - - Status = AcpiPsCompleteFinalOp (WalkState, Op, Status); - return_ACPI_STATUS (Status); -} - |
