| Current Path : /sys/contrib/dev/acpica/common/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/contrib/dev/acpica/common/adwalk.c |
/******************************************************************************
*
* Module Name: adwalk - Application-level disassembler parse tree walk routines
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, 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>
#include <contrib/dev/acpica/include/amlcode.h>
#include <contrib/dev/acpica/include/acdisasm.h>
#include <contrib/dev/acpica/include/acdispat.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#include <contrib/dev/acpica/include/acapps.h>
#define _COMPONENT ACPI_TOOLS
ACPI_MODULE_NAME ("adwalk")
/*
* aslmap - opcode mappings and reserved method names
*/
ACPI_OBJECT_TYPE
AslMapNamedOpcodeToDataType (
UINT16 Opcode);
/* Local prototypes */
static ACPI_STATUS
AcpiDmFindOrphanDescending (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context);
static ACPI_STATUS
AcpiDmDumpDescending (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context);
static ACPI_STATUS
AcpiDmXrefDescendingOp (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context);
static ACPI_STATUS
AcpiDmCommonAscendingOp (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context);
static ACPI_STATUS
AcpiDmLoadDescendingOp (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context);
static UINT32
AcpiDmInspectPossibleArgs (
UINT32 CurrentOpArgCount,
UINT32 TargetCount,
ACPI_PARSE_OBJECT *Op);
static ACPI_STATUS
AcpiDmResourceDescendingOp (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context);
/*******************************************************************************
*
* FUNCTION: AcpiDmDumpTree
*
* PARAMETERS: Origin - Starting object
*
* RETURN: None
*
* DESCRIPTION: Parse tree walk to format and output the nodes
*
******************************************************************************/
void
AcpiDmDumpTree (
ACPI_PARSE_OBJECT *Origin)
{
ACPI_OP_WALK_INFO Info;
if (!Origin)
{
return;
}
AcpiOsPrintf ("/*\nAML Parse Tree\n\n");
Info.Flags = 0;
Info.Count = 0;
Info.Level = 0;
Info.WalkState = NULL;
AcpiDmWalkParseTree (Origin, AcpiDmDumpDescending, NULL, &Info);
AcpiOsPrintf ("*/\n\n");
}
/*******************************************************************************
*
* FUNCTION: AcpiDmFindOrphanMethods
*
* PARAMETERS: Origin - Starting object
*
* RETURN: None
*
* DESCRIPTION: Parse tree walk to find "orphaned" method invocations -- methods
* that are not resolved in the namespace
*
******************************************************************************/
void
AcpiDmFindOrphanMethods (
ACPI_PARSE_OBJECT *Origin)
{
ACPI_OP_WALK_INFO Info;
if (!Origin)
{
return;
}
Info.Flags = 0;
Info.Level = 0;
Info.WalkState = NULL;
AcpiDmWalkParseTree (Origin, AcpiDmFindOrphanDescending, NULL, &Info);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmFinishNamespaceLoad
*
* PARAMETERS: ParseTreeRoot - Root of the parse tree
* NamespaceRoot - Root of the internal namespace
* OwnerId - OwnerId of the table to be disassembled
*
* RETURN: None
*
* DESCRIPTION: Load all namespace items that are created within control
* methods. Used before namespace cross reference
*
******************************************************************************/
void
AcpiDmFinishNamespaceLoad (
ACPI_PARSE_OBJECT *ParseTreeRoot,
ACPI_NAMESPACE_NODE *NamespaceRoot,
ACPI_OWNER_ID OwnerId)
{
ACPI_STATUS Status;
ACPI_OP_WALK_INFO Info;
ACPI_WALK_STATE *WalkState;
if (!ParseTreeRoot)
{
return;
}
/* Create and initialize a new walk state */
WalkState = AcpiDsCreateWalkState (OwnerId, ParseTreeRoot, NULL, NULL);
if (!WalkState)
{
return;
}
Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, WalkState);
if (ACPI_FAILURE (Status))
{
return;
}
Info.Flags = 0;
Info.Level = 0;
Info.WalkState = WalkState;
AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmLoadDescendingOp,
AcpiDmCommonAscendingOp, &Info);
ACPI_FREE (WalkState);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmCrossReferenceNamespace
*
* PARAMETERS: ParseTreeRoot - Root of the parse tree
* NamespaceRoot - Root of the internal namespace
* OwnerId - OwnerId of the table to be disassembled
*
* RETURN: None
*
* DESCRIPTION: Cross reference the namespace to create externals
*
******************************************************************************/
void
AcpiDmCrossReferenceNamespace (
ACPI_PARSE_OBJECT *ParseTreeRoot,
ACPI_NAMESPACE_NODE *NamespaceRoot,
ACPI_OWNER_ID OwnerId)
{
ACPI_STATUS Status;
ACPI_OP_WALK_INFO Info;
ACPI_WALK_STATE *WalkState;
if (!ParseTreeRoot)
{
return;
}
/* Create and initialize a new walk state */
WalkState = AcpiDsCreateWalkState (OwnerId, ParseTreeRoot, NULL, NULL);
if (!WalkState)
{
return;
}
Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, WalkState);
if (ACPI_FAILURE (Status))
{
return;
}
Info.Flags = 0;
Info.Level = 0;
Info.WalkState = WalkState;
AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmXrefDescendingOp,
AcpiDmCommonAscendingOp, &Info);
ACPI_FREE (WalkState);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmConvertResourceIndexes
*
* PARAMETERS: ParseTreeRoot - Root of the parse tree
* NamespaceRoot - Root of the internal namespace
*
* RETURN: None
*
* DESCRIPTION: Convert fixed-offset references to resource descriptors to
* symbolic references. Should only be called after namespace has
* been cross referenced.
*
******************************************************************************/
void
AcpiDmConvertResourceIndexes (
ACPI_PARSE_OBJECT *ParseTreeRoot,
ACPI_NAMESPACE_NODE *NamespaceRoot)
{
ACPI_STATUS Status;
ACPI_OP_WALK_INFO Info;
ACPI_WALK_STATE *WalkState;
if (!ParseTreeRoot)
{
return;
}
/* Create and initialize a new walk state */
WalkState = AcpiDsCreateWalkState (0, ParseTreeRoot, NULL, NULL);
if (!WalkState)
{
return;
}
Status = AcpiDsScopeStackPush (NamespaceRoot, NamespaceRoot->Type, WalkState);
if (ACPI_FAILURE (Status))
{
return;
}
Info.Flags = 0;
Info.Level = 0;
Info.WalkState = WalkState;
AcpiDmWalkParseTree (ParseTreeRoot, AcpiDmResourceDescendingOp,
AcpiDmCommonAscendingOp, &Info);
ACPI_FREE (WalkState);
return;
}
/*******************************************************************************
*
* FUNCTION: AcpiDmDumpDescending
*
* PARAMETERS: ASL_WALK_CALLBACK
*
* RETURN: Status
*
* DESCRIPTION: Format and print contents of one parse Op.
*
******************************************************************************/
static ACPI_STATUS
AcpiDmDumpDescending (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
ACPI_OP_WALK_INFO *Info = Context;
char *Path;
if (!Op)
{
return (AE_OK);
}
/* Most of the information (count, level, name) here */
Info->Count++;
AcpiOsPrintf ("% 5d [%2.2d] ", Info->Count, Level);
AcpiDmIndent (Level);
AcpiOsPrintf ("%-28s", AcpiPsGetOpcodeName (Op->Common.AmlOpcode));
/* Extra info is helpful */
switch (Op->Common.AmlOpcode)
{
case AML_BYTE_OP:
case AML_WORD_OP:
case AML_DWORD_OP:
AcpiOsPrintf ("%X", (UINT32) Op->Common.Value.Integer);
break;
case AML_INT_NAMEPATH_OP:
if (Op->Common.Value.String)
{
AcpiNsExternalizeName (ACPI_UINT32_MAX, Op->Common.Value.String,
NULL, &Path);
AcpiOsPrintf ("%s %p", Path, Op->Common.Node);
ACPI_FREE (Path);
}
else
{
AcpiOsPrintf ("[NULL]");
}
break;
case AML_NAME_OP:
case AML_METHOD_OP:
case AML_DEVICE_OP:
case AML_INT_NAMEDFIELD_OP:
AcpiOsPrintf ("%4.4s", ACPI_CAST_PTR (char, &Op->Named.Name));
break;
default:
break;
}
AcpiOsPrintf ("\n");
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmFindOrphanDescending
*
* PARAMETERS: ASL_WALK_CALLBACK
*
* RETURN: Status
*
* DESCRIPTION: Check namepath Ops for orphaned method invocations
*
* Note: Experimental.
*
******************************************************************************/
static ACPI_STATUS
AcpiDmFindOrphanDescending (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
const ACPI_OPCODE_INFO *OpInfo;
ACPI_PARSE_OBJECT *ChildOp;
ACPI_PARSE_OBJECT *NextOp;
ACPI_PARSE_OBJECT *ParentOp;
UINT32 ArgCount;
if (!Op)
{
return (AE_OK);
}
OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
switch (Op->Common.AmlOpcode)
{
#ifdef ACPI_UNDER_DEVELOPMENT
case AML_ADD_OP:
ChildOp = Op->Common.Value.Arg;
if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) &&
!ChildOp->Common.Node)
{
AcpiNsExternalizeName (ACPI_UINT32_MAX, ChildOp->Common.Value.String,
NULL, &Path);
AcpiOsPrintf ("/* %-16s A-NAMEPATH: %s */\n", Op->Common.AmlOpName, Path);
ACPI_FREE (Path);
NextOp = Op->Common.Next;
if (!NextOp)
{
/* This NamePath has no args, assume it is an integer */
AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0);
return (AE_OK);
}
ArgCount = AcpiDmInspectPossibleArgs (3, 1, NextOp);
AcpiOsPrintf ("/* A-CHILDREN: %u Actual %u */\n", ArgCount, AcpiDmCountChildren (Op));
if (ArgCount < 1)
{
/* One Arg means this is just a Store(Name,Target) */
AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0);
return (AE_OK);
}
AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount);
}
break;
#endif
case AML_STORE_OP:
ChildOp = Op->Common.Value.Arg;
if ((ChildOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP) &&
!ChildOp->Common.Node)
{
NextOp = Op->Common.Next;
if (!NextOp)
{
/* This NamePath has no args, assume it is an integer */
AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0);
return (AE_OK);
}
ArgCount = AcpiDmInspectPossibleArgs (2, 1, NextOp);
if (ArgCount <= 1)
{
/* One Arg means this is just a Store(Name,Target) */
AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0);
return (AE_OK);
}
AcpiDmAddToExternalList (ChildOp, ChildOp->Common.Value.String, ACPI_TYPE_METHOD, ArgCount);
}
break;
case AML_INT_NAMEPATH_OP:
/* Must examine parent to see if this namepath is an argument */
ParentOp = Op->Common.Parent;
OpInfo = AcpiPsGetOpcodeInfo (ParentOp->Common.AmlOpcode);
if ((OpInfo->Class != AML_CLASS_EXECUTE) &&
(OpInfo->Class != AML_CLASS_CREATE) &&
(ParentOp->Common.AmlOpcode != AML_INT_METHODCALL_OP) &&
!Op->Common.Node)
{
ArgCount = AcpiDmInspectPossibleArgs (0, 0, Op->Common.Next);
/*
* Check if namepath is a predicate for if/while or lone parameter to
* a return.
*/
if (ArgCount == 0)
{
if (((ParentOp->Common.AmlOpcode == AML_IF_OP) ||
(ParentOp->Common.AmlOpcode == AML_WHILE_OP) ||
(ParentOp->Common.AmlOpcode == AML_RETURN_OP)) &&
/* And namepath is the first argument */
(ParentOp->Common.Value.Arg == Op))
{
AcpiDmAddToExternalList (Op, Op->Common.Value.String, ACPI_TYPE_INTEGER, 0);
break;
}
}
/*
* This is a standalone namestring (not a parameter to another
* operator) - it *must* be a method invocation, nothing else is
* grammatically possible.
*/
AcpiDmAddToExternalList (Op, Op->Common.Value.String, ACPI_TYPE_METHOD, ArgCount);
}
break;
default:
break;
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmLoadDescendingOp
*
* PARAMETERS: ASL_WALK_CALLBACK
*
* RETURN: Status
*
* DESCRIPTION: Descending handler for namespace control method object load
*
******************************************************************************/
static ACPI_STATUS
AcpiDmLoadDescendingOp (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
ACPI_OP_WALK_INFO *Info = Context;
const ACPI_OPCODE_INFO *OpInfo;
ACPI_WALK_STATE *WalkState;
ACPI_OBJECT_TYPE ObjectType;
ACPI_STATUS Status;
char *Path = NULL;
ACPI_PARSE_OBJECT *NextOp;
ACPI_NAMESPACE_NODE *Node;
char FieldPath[5];
BOOLEAN PreDefined = FALSE;
UINT8 PreDefineIndex = 0;
WalkState = Info->WalkState;
OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
ObjectType = OpInfo->ObjectType;
ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
/* Only interested in operators that create new names */
if (!(OpInfo->Flags & AML_NAMED) &&
!(OpInfo->Flags & AML_CREATE))
{
goto Exit;
}
/* Get the NamePath from the appropriate place */
if (OpInfo->Flags & AML_NAMED)
{
/* For all named operators, get the new name */
Path = (char *) Op->Named.Path;
if (!Path && Op->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
{
*ACPI_CAST_PTR (UINT32, &FieldPath[0]) = Op->Named.Name;
FieldPath[4] = 0;
Path = FieldPath;
}
}
else if (OpInfo->Flags & AML_CREATE)
{
/* New name is the last child */
NextOp = Op->Common.Value.Arg;
while (NextOp->Common.Next)
{
NextOp = NextOp->Common.Next;
}
Path = NextOp->Common.Value.String;
}
if (!Path)
{
goto Exit;
}
/* Insert the name into the namespace */
Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ObjectType,
ACPI_IMODE_LOAD_PASS2, ACPI_NS_DONT_OPEN_SCOPE,
WalkState, &Node);
Op->Common.Node = Node;
if (ACPI_SUCCESS (Status))
{
/* Check if it's a predefined node */
while (AcpiGbl_PreDefinedNames[PreDefineIndex].Name)
{
if (!ACPI_STRNCMP (Node->Name.Ascii,
AcpiGbl_PreDefinedNames[PreDefineIndex].Name, 4))
{
PreDefined = TRUE;
break;
}
PreDefineIndex++;
}
/*
* Set node owner id if it satisfies all the following conditions:
* 1) Not a predefined node, _SB_ etc
* 2) Not the root node
* 3) Not a node created by Scope
*/
if (!PreDefined && Node != AcpiGbl_RootNode &&
Op->Common.AmlOpcode != AML_SCOPE_OP)
{
Node->OwnerId = WalkState->OwnerId;
}
}
Exit:
if (AcpiNsOpensScope (ObjectType))
{
if (Op->Common.Node)
{
Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmXrefDescendingOp
*
* PARAMETERS: ASL_WALK_CALLBACK
*
* RETURN: Status
*
* DESCRIPTION: Descending handler for namespace cross reference
*
******************************************************************************/
static ACPI_STATUS
AcpiDmXrefDescendingOp (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
ACPI_OP_WALK_INFO *Info = Context;
const ACPI_OPCODE_INFO *OpInfo;
ACPI_WALK_STATE *WalkState;
ACPI_OBJECT_TYPE ObjectType;
ACPI_OBJECT_TYPE ObjectType2;
ACPI_STATUS Status;
char *Path = NULL;
ACPI_PARSE_OBJECT *NextOp;
ACPI_NAMESPACE_NODE *Node;
ACPI_OPERAND_OBJECT *Object;
UINT32 ParamCount = 0;
WalkState = Info->WalkState;
OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
ObjectType = OpInfo->ObjectType;
ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
if ((!(OpInfo->Flags & AML_NAMED)) &&
(!(OpInfo->Flags & AML_CREATE)) &&
(Op->Common.AmlOpcode != AML_INT_NAMEPATH_OP))
{
goto Exit;
}
/* Get the NamePath from the appropriate place */
if (OpInfo->Flags & AML_NAMED)
{
if ((Op->Common.AmlOpcode == AML_ALIAS_OP) ||
(Op->Common.AmlOpcode == AML_SCOPE_OP))
{
/*
* Only these two operators refer to an existing name,
* first argument
*/
Path = (char *) Op->Named.Path;
}
}
else if (OpInfo->Flags & AML_CREATE)
{
/* Referenced Buffer Name is the first child */
NextOp = Op->Common.Value.Arg;
if (NextOp->Common.AmlOpcode == AML_INT_NAMEPATH_OP)
{
Path = NextOp->Common.Value.String;
}
}
else
{
Path = Op->Common.Value.String;
}
if (!Path)
{
goto Exit;
}
/*
* Lookup the name in the namespace. Name must exist at this point, or it
* is an invalid reference.
*
* The namespace is also used as a lookup table for references to resource
* descriptors and the fields within them.
*/
Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
WalkState, &Node);
if (ACPI_FAILURE (Status))
{
if (Status == AE_NOT_FOUND)
{
AcpiDmAddToExternalList (Op, Path, (UINT8) ObjectType, 0);
/*
* We could install this into the namespace, but we catch duplicate
* externals when they are added to the list.
*/
#if 0
Status = AcpiNsLookup (WalkState->ScopeInfo, Path, ACPI_TYPE_ANY,
ACPI_IMODE_LOAD_PASS1, ACPI_NS_DONT_OPEN_SCOPE,
WalkState, &Node);
#endif
}
}
/*
* Found the node in external table, add it to external list
* Node->OwnerId == 0 indicates built-in ACPI Names, _OS_ etc
*/
else if (Node->OwnerId && WalkState->OwnerId != Node->OwnerId)
{
ObjectType2 = ObjectType;
Object = AcpiNsGetAttachedObject (Node);
if (Object)
{
ObjectType2 = Object->Common.Type;
if (ObjectType2 == ACPI_TYPE_METHOD)
{
ParamCount = Object->Method.ParamCount;
}
}
AcpiDmAddToExternalList (Op, Path, (UINT8) ObjectType2, ParamCount);
Op->Common.Node = Node;
}
else
{
Op->Common.Node = Node;
}
Exit:
/* Open new scope if necessary */
if (AcpiNsOpensScope (ObjectType))
{
if (Op->Common.Node)
{
Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmResourceDescendingOp
*
* PARAMETERS: ASL_WALK_CALLBACK
*
* RETURN: None
*
* DESCRIPTION: Process one parse op during symbolic resource index conversion.
*
******************************************************************************/
static ACPI_STATUS
AcpiDmResourceDescendingOp (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
ACPI_OP_WALK_INFO *Info = Context;
const ACPI_OPCODE_INFO *OpInfo;
ACPI_WALK_STATE *WalkState;
ACPI_OBJECT_TYPE ObjectType;
ACPI_STATUS Status;
WalkState = Info->WalkState;
OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
/* Open new scope if necessary */
ObjectType = OpInfo->ObjectType;
if (AcpiNsOpensScope (ObjectType))
{
if (Op->Common.Node)
{
Status = AcpiDsScopeStackPush (Op->Common.Node, ObjectType, WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
}
/*
* Check if this operator contains a reference to a resource descriptor.
* If so, convert the reference into a symbolic reference.
*/
AcpiDmCheckResourceReference (Op, WalkState);
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmCommonAscendingOp
*
* PARAMETERS: ASL_WALK_CALLBACK
*
* RETURN: None
*
* DESCRIPTION: Ascending handler for combined parse/namespace walks. Closes
* scope if necessary.
*
******************************************************************************/
static ACPI_STATUS
AcpiDmCommonAscendingOp (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
ACPI_OP_WALK_INFO *Info = Context;
const ACPI_OPCODE_INFO *OpInfo;
ACPI_OBJECT_TYPE ObjectType;
/* Close scope if necessary */
OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
ObjectType = OpInfo->ObjectType;
ObjectType = AslMapNamedOpcodeToDataType (Op->Asl.AmlOpcode);
if (AcpiNsOpensScope (ObjectType))
{
(void) AcpiDsScopeStackPop (Info->WalkState);
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmInspectPossibleArgs
*
* PARAMETERS: CurrentOpArgCount - Which arg of the current op was the
* possible method invocation found
* TargetCount - Number of targets (0,1,2) for this op
* Op - Parse op
*
* RETURN: Status
*
* DESCRIPTION: Examine following args and next ops for possible arguments
* for an unrecognized method invocation.
*
******************************************************************************/
static UINT32
AcpiDmInspectPossibleArgs (
UINT32 CurrentOpArgCount,
UINT32 TargetCount,
ACPI_PARSE_OBJECT *Op)
{
const ACPI_OPCODE_INFO *OpInfo;
UINT32 i;
UINT32 Last = 0;
UINT32 Lookahead;
Lookahead = (ACPI_METHOD_NUM_ARGS + TargetCount) - CurrentOpArgCount;
/* Lookahead for the maximum number of possible arguments */
for (i = 0; i < Lookahead; i++)
{
if (!Op)
{
break;
}
OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
/*
* Any one of these operators is "very probably" not a method arg
*/
if ((Op->Common.AmlOpcode == AML_STORE_OP) ||
(Op->Common.AmlOpcode == AML_NOTIFY_OP))
{
break;
}
if ((OpInfo->Class != AML_CLASS_EXECUTE) &&
(OpInfo->Class != AML_CLASS_CONTROL))
{
Last = i+1;
}
Op = Op->Common.Next;
}
return (Last);
}