void
AcpiUtNamespaceError (
const char *ModuleName,
UINT32 LineNumber,
const char *InternalName,
ACPI_STATUS LookupStatus)
{
ACPI_STATUS Status;
UINT32 BadName;
char *Name = NULL;
ACPI_MSG_REDIRECT_BEGIN;
AcpiOsPrintf (ACPI_MSG_ERROR);
if (LookupStatus == AE_BAD_CHARACTER)
{
/* There is a non-ascii character in the name */
ACPI_MOVE_32_TO_32 (&BadName, ACPI_CAST_PTR (UINT32, InternalName));
AcpiOsPrintf ("[0x%.8X] (NON-ASCII)", BadName);
}
else
{
/* Convert path to external format */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX,
InternalName, NULL, &Name);
/* Print target name */
if (ACPI_SUCCESS (Status))
{
AcpiOsPrintf ("[%s]", Name);
}
else
{
AcpiOsPrintf ("[COULD NOT EXTERNALIZE NAME]");
}
if (Name)
{
ACPI_FREE (Name);
}
}
AcpiOsPrintf (" Namespace lookup failure, %s",
AcpiFormatException (LookupStatus));
ACPI_MSG_SUFFIX;
ACPI_MSG_REDIRECT_END;
}
void
AcpiNsReportError (
char *ModuleName,
UINT32 LineNumber,
char *InternalName,
ACPI_STATUS LookupStatus)
{
ACPI_STATUS Status;
UINT32 BadName;
char *Name = NULL;
AcpiOsPrintf ("ACPI Error (%s-%04d): ", ModuleName, LineNumber);
if (LookupStatus == AE_BAD_CHARACTER)
{
/* There is a non-ascii character in the name */
ACPI_MOVE_32_TO_32 (&BadName, InternalName);
AcpiOsPrintf ("[0x%4.4X] (NON-ASCII)", BadName);
}
else
{
/* Convert path to external format */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX,
InternalName, NULL, &Name);
/* Print target name */
if (ACPI_SUCCESS (Status))
{
AcpiOsPrintf ("[%s]", Name);
}
else
{
AcpiOsPrintf ("[COULD NOT EXTERNALIZE NAME]");
}
if (Name)
{
ACPI_FREE (Name);
}
}
AcpiOsPrintf (" Namespace lookup failure, %s\n",
AcpiFormatException (LookupStatus));
}
static void
AcpiDmAddToExternalListFromFile (
char *Path,
UINT8 Type,
UINT32 Value)
{
char *InternalPath;
char *ExternalPath;
ACPI_EXTERNAL_LIST *NewExternal;
ACPI_EXTERNAL_LIST *NextExternal;
ACPI_EXTERNAL_LIST *PrevExternal = NULL;
ACPI_STATUS Status;
BOOLEAN Resolved = FALSE;
if (!Path)
{
return;
}
/* TBD: Add a flags parameter */
if (Type == ACPI_TYPE_METHOD)
{
if (Value & 0x80)
{
Resolved = TRUE;
}
Value &= 0x07;
}
/*
* We don't want External() statements to contain a leading '\'.
* This prevents duplicate external statements of the form:
*
* External (\ABCD)
* External (ABCD)
*
* This would cause a compile time error when the disassembled
* output file is recompiled.
*/
if ((*Path == AML_ROOT_PREFIX) && (Path[1]))
{
Path++;
}
/* Check all existing externals to ensure no duplicates */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (!ACPI_STRCMP (Path, NextExternal->Path))
{
/* Duplicate method, check that the Value (ArgCount) is the same */
if ((NextExternal->Type == ACPI_TYPE_METHOD) &&
(NextExternal->Value != Value))
{
ACPI_ERROR ((AE_INFO,
"(File) External method arg count mismatch %s: Current %u, override to %u",
NextExternal->Path, NextExternal->Value, Value));
/* Override, since new value came from external reference file */
NextExternal->Value = Value;
}
/* Allow upgrade of type from ANY */
else if (NextExternal->Type == ACPI_TYPE_ANY)
{
NextExternal->Type = Type;
NextExternal->Value = Value;
}
return;
}
NextExternal = NextExternal->Next;
}
/* Get the internal pathname (AML format) */
Status = AcpiNsInternalizeName (Path, &InternalPath);
if (ACPI_FAILURE (Status))
{
return;
}
/* Allocate and init a new External() descriptor */
NewExternal = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_LIST));
if (!NewExternal)
{
ACPI_FREE (InternalPath);
return;
}
/* Must copy and normalize the input path */
AcpiNsExternalizeName (ACPI_UINT32_MAX, InternalPath, NULL, &ExternalPath);
NewExternal->Path = ExternalPath;
NewExternal->Type = Type;
NewExternal->Value = Value;
NewExternal->Resolved = Resolved;
NewExternal->Length = (UINT16) ACPI_STRLEN (Path);
NewExternal->InternalPath = InternalPath;
/* Set flag to indicate External->InternalPath needs to be freed */
NewExternal->Flags |= ACPI_IPATH_ALLOCATED | ACPI_FROM_REFERENCE_FILE;
/* Link the new descriptor into the global list, alphabetically ordered */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (AcpiUtStricmp (NewExternal->Path, NextExternal->Path) < 0)
{
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
NewExternal->Next = NextExternal;
return;
}
PrevExternal = NextExternal;
NextExternal = NextExternal->Next;
}
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
}
void
AcpiDmAddToExternalList (
ACPI_PARSE_OBJECT *Op,
char *Path,
UINT8 Type,
UINT32 Value)
{
char *ExternalPath;
char *Fullpath = NULL;
ACPI_EXTERNAL_LIST *NewExternal;
ACPI_EXTERNAL_LIST *NextExternal;
ACPI_EXTERNAL_LIST *PrevExternal = NULL;
ACPI_STATUS Status;
BOOLEAN Resolved = FALSE;
if (!Path)
{
return;
}
if (Type == ACPI_TYPE_METHOD)
{
if (Value & 0x80)
{
Resolved = TRUE;
}
Value &= 0x07;
}
/*
* We don't want External() statements to contain a leading '\'.
* This prevents duplicate external statements of the form:
*
* External (\ABCD)
* External (ABCD)
*
* This would cause a compile time error when the disassembled
* output file is recompiled.
*/
if ((*Path == AML_ROOT_PREFIX) && (Path[1]))
{
Path++;
}
/* Externalize the ACPI pathname */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Path,
NULL, &ExternalPath);
if (ACPI_FAILURE (Status))
{
return;
}
/*
* Get the full pathname from the root if "Path" has one or more
* parent prefixes (^). Note: path will not contain a leading '\'.
*/
if (*Path == (UINT8) AML_PARENT_PREFIX)
{
Fullpath = AcpiDmNormalizeParentPrefix (Op, ExternalPath);
if (Fullpath)
{
/* Set new external path */
ACPI_FREE (ExternalPath);
ExternalPath = Fullpath;
}
}
/* Check all existing externals to ensure no duplicates */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (!ACPI_STRCMP (ExternalPath, NextExternal->Path))
{
/* Duplicate method, check that the Value (ArgCount) is the same */
if ((NextExternal->Type == ACPI_TYPE_METHOD) &&
(NextExternal->Value != Value))
{
ACPI_ERROR ((AE_INFO,
"External method arg count mismatch %s: Current %u, attempted %u",
NextExternal->Path, NextExternal->Value, Value));
}
/* Allow upgrade of type from ANY */
else if (NextExternal->Type == ACPI_TYPE_ANY)
{
NextExternal->Type = Type;
NextExternal->Value = Value;
}
ACPI_FREE (ExternalPath);
return;
}
NextExternal = NextExternal->Next;
}
/* Allocate and init a new External() descriptor */
NewExternal = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_LIST));
if (!NewExternal)
{
ACPI_FREE (ExternalPath);
return;
}
NewExternal->Path = ExternalPath;
NewExternal->Type = Type;
NewExternal->Value = Value;
NewExternal->Resolved = Resolved;
NewExternal->Length = (UINT16) ACPI_STRLEN (ExternalPath);
/* Was the external path with parent prefix normalized to a fullpath? */
if (Fullpath == ExternalPath)
{
/* Get new internal path */
Status = AcpiNsInternalizeName (ExternalPath, &Path);
if (ACPI_FAILURE (Status))
{
ACPI_FREE (ExternalPath);
ACPI_FREE (NewExternal);
return;
}
/* Set flag to indicate External->InternalPath need to be freed */
NewExternal->Flags |= ACPI_IPATH_ALLOCATED;
}
NewExternal->InternalPath = Path;
/* Link the new descriptor into the global list, alphabetically ordered */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (AcpiUtStricmp (NewExternal->Path, NextExternal->Path) < 0)
{
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
NewExternal->Next = NextExternal;
return;
}
PrevExternal = NextExternal;
NextExternal = NextExternal->Next;
}
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
}
void
AcpiDmAddToExternalList (
ACPI_PARSE_OBJECT *Op,
char *Path,
UINT8 Type,
UINT32 Value)
{
char *ExternalPath;
char *Fullpath = NULL;
ACPI_EXTERNAL_LIST *NewExternal;
ACPI_EXTERNAL_LIST *NextExternal;
ACPI_EXTERNAL_LIST *PrevExternal = NULL;
ACPI_STATUS Status;
if (!Path)
{
return;
}
/* Externalize the ACPI path */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Path,
NULL, &ExternalPath);
if (ACPI_FAILURE (Status))
{
return;
}
/* Get the full pathname from root if "Path" has a parent prefix */
if (*Path == (UINT8) AML_PARENT_PREFIX)
{
Fullpath = AcpiDmNormalizeParentPrefix (Op, ExternalPath);
if (Fullpath)
{
/* Set new external path */
ACPI_FREE (ExternalPath);
ExternalPath = Fullpath;
}
}
/* Check all existing externals to ensure no duplicates */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (!ACPI_STRCMP (ExternalPath, NextExternal->Path))
{
/* Duplicate method, check that the Value (ArgCount) is the same */
if ((NextExternal->Type == ACPI_TYPE_METHOD) &&
(NextExternal->Value != Value))
{
ACPI_ERROR ((AE_INFO,
"Argument count mismatch for method %s %u %u",
NextExternal->Path, NextExternal->Value, Value));
}
/* Allow upgrade of type from ANY */
else if (NextExternal->Type == ACPI_TYPE_ANY)
{
NextExternal->Type = Type;
NextExternal->Value = Value;
}
ACPI_FREE (ExternalPath);
return;
}
NextExternal = NextExternal->Next;
}
/* Allocate and init a new External() descriptor */
NewExternal = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_LIST));
if (!NewExternal)
{
ACPI_FREE (ExternalPath);
return;
}
NewExternal->Path = ExternalPath;
NewExternal->Type = Type;
NewExternal->Value = Value;
NewExternal->Length = (UINT16) ACPI_STRLEN (ExternalPath);
/* Was the external path with parent prefix normalized to a fullpath? */
if (Fullpath == ExternalPath)
{
/* Get new internal path */
Status = AcpiNsInternalizeName (ExternalPath, &Path);
if (ACPI_FAILURE (Status))
{
ACPI_FREE (ExternalPath);
ACPI_FREE (NewExternal);
return;
}
/* Set flag to indicate External->InternalPath need to be freed */
NewExternal->Flags |= ACPI_IPATH_ALLOCATED;
}
NewExternal->InternalPath = Path;
/* Link the new descriptor into the global list, alphabetically ordered */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (AcpiUtStricmp (NewExternal->Path, NextExternal->Path) < 0)
{
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
NewExternal->Next = NextExternal;
return;
}
PrevExternal = NextExternal;
NextExternal = NextExternal->Next;
}
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
}
void
OptOptimizeNamePath (
ACPI_PARSE_OBJECT *Op,
UINT32 Flags,
ACPI_WALK_STATE *WalkState,
char *AmlNameString,
ACPI_NAMESPACE_NODE *TargetNode)
{
ACPI_STATUS Status;
ACPI_BUFFER TargetPath;
ACPI_BUFFER CurrentPath;
ACPI_SIZE AmlNameStringLength;
ACPI_NAMESPACE_NODE *CurrentNode;
char *ExternalNameString;
char *NewPath = NULL;
ACPI_SIZE HowMuchShorter;
ACPI_PARSE_OBJECT *NextOp;
ACPI_FUNCTION_TRACE (OptOptimizeNamePath);
/* This is an optional optimization */
if (!Gbl_ReferenceOptimizationFlag)
{
return_VOID;
}
/* Various required items */
if (!TargetNode || !WalkState || !AmlNameString || !Op->Common.Parent)
{
return_VOID;
}
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
"PATH OPTIMIZE: Line %5d ParentOp [%12.12s] ThisOp [%12.12s] ",
Op->Asl.LogicalLineNumber,
AcpiPsGetOpcodeName (Op->Common.Parent->Common.AmlOpcode),
AcpiPsGetOpcodeName (Op->Common.AmlOpcode)));
if (!(Flags & (AML_NAMED | AML_CREATE)))
{
if (Op->Asl.CompileFlags & NODE_IS_NAME_DECLARATION)
{
/* We don't want to fuss with actual name declaration nodes here */
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
"******* NAME DECLARATION\n"));
return_VOID;
}
}
/*
* The original path must be longer than one NameSeg (4 chars) for there
* to be any possibility that it can be optimized to a shorter string
*/
AmlNameStringLength = strlen (AmlNameString);
if (AmlNameStringLength <= ACPI_NAME_SIZE)
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
"NAMESEG %4.4s\n", AmlNameString));
return_VOID;
}
/*
* We need to obtain the node that represents the current scope -- where
* we are right now in the namespace. We will compare this path
* against the Namepath, looking for commonality.
*/
CurrentNode = AcpiGbl_RootNode;
if (WalkState->ScopeInfo)
{
CurrentNode = WalkState->ScopeInfo->Scope.Node;
}
if (Flags & (AML_NAMED | AML_CREATE))
{
/* This is the declaration of a new name */
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS, "NAME\n"));
/*
* The node of interest is the parent of this node (the containing
* scope). The actual namespace node may be up more than one level
* of parse op or it may not exist at all (if we traverse back
* up to the root.)
*/
NextOp = Op->Asl.Parent;
while (NextOp && (!NextOp->Asl.Node))
{
NextOp = NextOp->Asl.Parent;
}
if (NextOp && NextOp->Asl.Node)
{
CurrentNode = NextOp->Asl.Node;
}
else
{
CurrentNode = AcpiGbl_RootNode;
}
}
else
{
/* This is a reference to an existing named object */
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS, "REFERENCE\n"));
}
/*
* Obtain the full paths to the two nodes that we are interested in
* (Target and current namespace location) in external
* format -- something we can easily manipulate
*/
TargetPath.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
Status = AcpiNsHandleToPathname (TargetNode, &TargetPath, FALSE);
if (ACPI_FAILURE (Status))
{
AslCoreSubsystemError (Op, Status, "Getting Target NamePath",
ASL_NO_ABORT);
return_VOID;
}
TargetPath.Length--; /* Subtract one for null terminator */
/* CurrentPath is the path to this scope (where we are in the namespace) */
CurrentPath.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
Status = AcpiNsHandleToPathname (CurrentNode, &CurrentPath, FALSE);
if (ACPI_FAILURE (Status))
{
AslCoreSubsystemError (Op, Status, "Getting Current NamePath",
ASL_NO_ABORT);
return_VOID;
}
CurrentPath.Length--; /* Subtract one for null terminator */
/* Debug output only */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, AmlNameString,
NULL, &ExternalNameString);
if (ACPI_FAILURE (Status))
{
AslCoreSubsystemError (Op, Status, "Externalizing NamePath",
ASL_NO_ABORT);
return_VOID;
}
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
"CURRENT SCOPE: (%2u) %-37s FULL PATH TO NAME: (%2u) %-32s ACTUAL AML:%-32s\n",
(UINT32) CurrentPath.Length, (char *) CurrentPath.Pointer,
(UINT32) TargetPath.Length, (char *) TargetPath.Pointer,
ExternalNameString));
ACPI_FREE (ExternalNameString);
/*
* Attempt an optmization depending on the type of namepath
*/
if (Flags & (AML_NAMED | AML_CREATE))
{
/*
* This is a named opcode and the namepath is a name declaration, not
* a reference.
*/
Status = OptOptimizeNameDeclaration (Op, WalkState, CurrentNode,
TargetNode, AmlNameString, &NewPath);
if (ACPI_FAILURE (Status))
{
/*
* 2) now attempt to
* optimize the namestring with carats (up-arrow)
*/
Status = OptBuildShortestPath (Op, WalkState, CurrentNode,
TargetNode, &CurrentPath, &TargetPath,
AmlNameStringLength, 1, &NewPath);
}
}
else
{
/*
* This is a reference to an existing named object
*
* 1) Check if search-to-root can be utilized using the last
* NameSeg of the NamePath
*/
Status = OptSearchToRoot (Op, WalkState, CurrentNode,
TargetNode, &TargetPath, &NewPath);
if (ACPI_FAILURE (Status))
{
/*
* 2) Search-to-root could not be used, now attempt to
* optimize the namestring with carats (up-arrow)
*/
Status = OptBuildShortestPath (Op, WalkState, CurrentNode,
TargetNode, &CurrentPath, &TargetPath,
AmlNameStringLength, 0, &NewPath);
}
}
/*
* Success from above indicates that the NamePath was successfully
* optimized. We need to update the parse op with the new name
*/
if (ACPI_SUCCESS (Status))
{
HowMuchShorter = (AmlNameStringLength - strlen (NewPath));
OptTotal += HowMuchShorter;
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
" REDUCED BY %2u (TOTAL SAVED %2u)",
(UINT32) HowMuchShorter, OptTotal));
if (Flags & AML_NAMED)
{
if (Op->Asl.AmlOpcode == AML_ALIAS_OP)
{
/*
* ALIAS is the only oddball opcode, the name declaration
* (alias name) is the second operand
*/
Op->Asl.Child->Asl.Next->Asl.Value.String = NewPath;
Op->Asl.Child->Asl.Next->Asl.AmlLength = strlen (NewPath);
}
else
{
Op->Asl.Child->Asl.Value.String = NewPath;
Op->Asl.Child->Asl.AmlLength = strlen (NewPath);
}
}
else if (Flags & AML_CREATE)
{
/* Name must appear as the last parameter */
NextOp = Op->Asl.Child;
while (!(NextOp->Asl.CompileFlags & NODE_IS_NAME_DECLARATION))
{
NextOp = NextOp->Asl.Next;
}
/* Update the parse node with the new NamePath */
NextOp->Asl.Value.String = NewPath;
NextOp->Asl.AmlLength = strlen (NewPath);
}
else
{
/* Update the parse node with the new NamePath */
Op->Asl.Value.String = NewPath;
Op->Asl.AmlLength = strlen (NewPath);
}
}
else
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS, " ALREADY OPTIMAL"));
}
/* Cleanup path buffers */
ACPI_FREE (TargetPath.Pointer);
ACPI_FREE (CurrentPath.Pointer);
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS, "\n"));
return_VOID;
}
static ACPI_STATUS
OptOptimizeNameDeclaration (
ACPI_PARSE_OBJECT *Op,
ACPI_WALK_STATE *WalkState,
ACPI_NAMESPACE_NODE *CurrentNode,
ACPI_NAMESPACE_NODE *TargetNode,
char *AmlNameString,
char **NewPath)
{
ACPI_STATUS Status;
char *NewPathExternal;
ACPI_NAMESPACE_NODE *Node;
ACPI_FUNCTION_TRACE (OptOptimizeNameDeclaration);
if (((CurrentNode == AcpiGbl_RootNode) ||
(Op->Common.Parent->Asl.ParseOpcode == PARSEOP_DEFINITION_BLOCK)) &&
(ACPI_IS_ROOT_PREFIX (AmlNameString[0])))
{
/*
* The current scope is the root, and the namepath has a root prefix
* that is therefore extraneous. Remove it.
*/
*NewPath = &AmlNameString[1];
/* Debug output */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, *NewPath,
NULL, &NewPathExternal);
if (ACPI_FAILURE (Status))
{
AslCoreSubsystemError (Op, Status, "Externalizing NamePath",
ASL_NO_ABORT);
return (Status);
}
/*
* Check to make sure that the optimization finds the node we are
* looking for. This is simply a sanity check on the new
* path that has been created.
*
* We know that we are at the root, so NULL is used for the scope.
*/
Status = AcpiNsLookup (NULL, *NewPath,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
ACPI_NS_DONT_OPEN_SCOPE, WalkState, &(Node));
if (ACPI_SUCCESS (Status))
{
/* Found the namepath, but make sure the node is correct */
if (Node == TargetNode)
{
/* The lookup matched the node, accept this optimization */
AslError (ASL_OPTIMIZATION, ASL_MSG_NAME_OPTIMIZATION,
Op, NewPathExternal);
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
"AT ROOT: %-24s", NewPathExternal));
}
else
{
/* Node is not correct, do not use this optimization */
Status = AE_NOT_FOUND;
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
" ***** WRONG NODE"));
AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Op,
"Not using optimized name - found wrong node");
}
}
else
{
/* The lookup failed, we obviously cannot use this optimization */
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_OPTIMIZATIONS,
" ***** NOT FOUND"));
AslError (ASL_WARNING, ASL_MSG_COMPILER_INTERNAL, Op,
"Not using optimized name - did not find node");
}
ACPI_FREE (NewPathExternal);
return (Status);
}
/* Could not optimize */
return (AE_NOT_FOUND);
}
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->Common.Value.String, ACPI_TYPE_INTEGER, 0);
return (AE_OK);
}
ArgCount = AcpiDmInspectPossibleArgs (3, 1, NextOp);
AcpiOsPrintf ("/* A-CHILDREN: %d Actual %d */\n", ArgCount, AcpiDmCountChildren (Op));
if (ArgCount < 1)
{
/* One Arg means this is just a Store(Name,Target) */
AcpiDmAddToExternalList (ChildOp->Common.Value.String, ACPI_TYPE_INTEGER, 0);
return (AE_OK);
}
AcpiDmAddToExternalList (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->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->Common.Value.String, ACPI_TYPE_INTEGER, 0);
return (AE_OK);
}
AcpiDmAddToExternalList (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->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->Common.Value.String, ACPI_TYPE_METHOD, ArgCount);
}
break;
default:
break;
}
return (AE_OK);
}
static ACPI_STATUS
AcpiDmDumpDescending (
ACPI_PARSE_OBJECT *Op,
UINT32 Level,
void *Context)
{
ACPI_OP_WALK_INFO *Info = Context;
const ACPI_OPCODE_INFO *OpInfo;
char *Path;
if (!Op)
{
return (AE_OK);
}
OpInfo = AcpiPsGetOpcodeInfo (Op->Common.AmlOpcode);
Info->Count++;
/* Most of the information (count, level, name) here */
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", &Op->Named.Name);
break;
default:
break;
}
AcpiOsPrintf ("\n");
return (AE_OK);
}
void
AcpiDmAddOpToExternalList (
ACPI_PARSE_OBJECT *Op,
char *Path,
UINT8 Type,
UINT32 Value,
UINT16 Flags)
{
char *ExternalPath;
char *InternalPath = Path;
char *Temp;
ACPI_STATUS Status;
ACPI_FUNCTION_TRACE (DmAddOpToExternalList);
if (!Path)
{
return_VOID;
}
/* Remove a root backslash if present */
if ((*Path == AML_ROOT_PREFIX) && (Path[1]))
{
Path++;
}
/* Externalize the pathname */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Path,
NULL, &ExternalPath);
if (ACPI_FAILURE (Status))
{
return_VOID;
}
/*
* Get the full pathname from the root if "Path" has one or more
* parent prefixes (^). Note: path will not contain a leading '\'.
*/
if (*Path == (UINT8) AML_PARENT_PREFIX)
{
Temp = AcpiDmNormalizeParentPrefix (Op, ExternalPath);
/* Set new external path */
ACPI_FREE (ExternalPath);
ExternalPath = Temp;
if (!Temp)
{
return_VOID;
}
/* Create the new internal pathname */
Flags |= ACPI_EXT_INTERNAL_PATH_ALLOCATED;
Status = AcpiNsInternalizeName (ExternalPath, &InternalPath);
if (ACPI_FAILURE (Status))
{
ACPI_FREE (ExternalPath);
return_VOID;
}
}
/* Create the new External() declaration node */
Status = AcpiDmCreateNewExternal (ExternalPath, InternalPath,
Type, Value, Flags);
if (ACPI_FAILURE (Status))
{
ACPI_FREE (ExternalPath);
if (Flags & ACPI_EXT_INTERNAL_PATH_ALLOCATED)
{
ACPI_FREE (InternalPath);
}
}
return_VOID;
}
ACPI_STATUS
AcpiNsLookup (
ACPI_GENERIC_STATE *ScopeInfo,
char *Pathname,
ACPI_OBJECT_TYPE Type,
ACPI_INTERPRETER_MODE InterpreterMode,
UINT32 Flags,
ACPI_WALK_STATE *WalkState,
ACPI_NAMESPACE_NODE **ReturnNode)
{
ACPI_STATUS Status;
char *Path = Pathname;
char *ExternalPath;
ACPI_NAMESPACE_NODE *PrefixNode;
ACPI_NAMESPACE_NODE *CurrentNode = NULL;
ACPI_NAMESPACE_NODE *ThisNode = NULL;
UINT32 NumSegments;
UINT32 NumCarats;
ACPI_NAME SimpleName;
ACPI_OBJECT_TYPE TypeToCheckFor;
ACPI_OBJECT_TYPE ThisSearchType;
UINT32 SearchParentFlag = ACPI_NS_SEARCH_PARENT;
UINT32 LocalFlags;
ACPI_INTERPRETER_MODE LocalInterpreterMode;
ACPI_FUNCTION_TRACE (NsLookup);
if (!ReturnNode)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
LocalFlags = Flags &
~(ACPI_NS_ERROR_IF_FOUND | ACPI_NS_OVERRIDE_IF_FOUND |
ACPI_NS_SEARCH_PARENT);
*ReturnNode = ACPI_ENTRY_NOT_FOUND;
AcpiGbl_NsLookupCount++;
if (!AcpiGbl_RootNode)
{
return_ACPI_STATUS (AE_NO_NAMESPACE);
}
/* Get the prefix scope. A null scope means use the root scope */
if ((!ScopeInfo) ||
(!ScopeInfo->Scope.Node))
{
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Null scope prefix, using root node (%p)\n",
AcpiGbl_RootNode));
PrefixNode = AcpiGbl_RootNode;
}
else
{
PrefixNode = ScopeInfo->Scope.Node;
if (ACPI_GET_DESCRIPTOR_TYPE (PrefixNode) != ACPI_DESC_TYPE_NAMED)
{
ACPI_ERROR ((AE_INFO, "%p is not a namespace node [%s]",
PrefixNode, AcpiUtGetDescriptorName (PrefixNode)));
return_ACPI_STATUS (AE_AML_INTERNAL);
}
if (!(Flags & ACPI_NS_PREFIX_IS_SCOPE))
{
/*
* This node might not be a actual "scope" node (such as a
* Device/Method, etc.) It could be a Package or other object
* node. Backup up the tree to find the containing scope node.
*/
while (!AcpiNsOpensScope (PrefixNode->Type) &&
PrefixNode->Type != ACPI_TYPE_ANY)
{
PrefixNode = PrefixNode->Parent;
}
}
}
/* Save type. TBD: may be no longer necessary */
TypeToCheckFor = Type;
/*
* Begin examination of the actual pathname
*/
if (!Pathname)
{
/* A Null NamePath is allowed and refers to the root */
NumSegments = 0;
ThisNode = AcpiGbl_RootNode;
Path = "";
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Null Pathname (Zero segments), Flags=%X\n", Flags));
}
else
{
/*
* Name pointer is valid (and must be in internal name format)
*
* Check for scope prefixes:
*
* As represented in the AML stream, a namepath consists of an
* optional scope prefix followed by a name segment part.
*
* If present, the scope prefix is either a Root Prefix (in
* which case the name is fully qualified), or one or more
* Parent Prefixes (in which case the name's scope is relative
* to the current scope).
*/
if (*Path == (UINT8) AML_ROOT_PREFIX)
{
/* Pathname is fully qualified, start from the root */
ThisNode = AcpiGbl_RootNode;
SearchParentFlag = ACPI_NS_NO_UPSEARCH;
/* Point to name segment part */
Path++;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Path is absolute from root [%p]\n", ThisNode));
}
else
{
/* Pathname is relative to current scope, start there */
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Searching relative to prefix scope [%4.4s] (%p)\n",
AcpiUtGetNodeName (PrefixNode), PrefixNode));
/*
* Handle multiple Parent Prefixes (carat) by just getting
* the parent node for each prefix instance.
*/
ThisNode = PrefixNode;
NumCarats = 0;
while (*Path == (UINT8) AML_PARENT_PREFIX)
{
/* Name is fully qualified, no search rules apply */
SearchParentFlag = ACPI_NS_NO_UPSEARCH;
/*
* Point past this prefix to the name segment
* part or the next Parent Prefix
*/
Path++;
/* Backup to the parent node */
NumCarats++;
ThisNode = ThisNode->Parent;
if (!ThisNode)
{
/*
* Current scope has no parent scope. Externalize
* the internal path for error message.
*/
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Pathname,
NULL, &ExternalPath);
if (ACPI_SUCCESS (Status))
{
ACPI_ERROR ((AE_INFO,
"%s: Path has too many parent prefixes (^)",
ExternalPath));
ACPI_FREE (ExternalPath);
}
return_ACPI_STATUS (AE_NOT_FOUND);
}
}
if (SearchParentFlag == ACPI_NS_NO_UPSEARCH)
{
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Search scope is [%4.4s], path has %u carat(s)\n",
AcpiUtGetNodeName (ThisNode), NumCarats));
}
}
/*
* Determine the number of ACPI name segments in this pathname.
*
* The segment part consists of either:
* - A Null name segment (0)
* - A DualNamePrefix followed by two 4-byte name segments
* - A MultiNamePrefix followed by a byte indicating the
* number of segments and the segments themselves.
* - A single 4-byte name segment
*
* Examine the name prefix opcode, if any, to determine the number of
* segments.
*/
switch (*Path)
{
case 0:
/*
* Null name after a root or parent prefixes. We already
* have the correct target node and there are no name segments.
*/
NumSegments = 0;
Type = ThisNode->Type;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Prefix-only Pathname (Zero name segments), Flags=%X\n",
Flags));
break;
case AML_DUAL_NAME_PREFIX:
/* More than one NameSeg, search rules do not apply */
SearchParentFlag = ACPI_NS_NO_UPSEARCH;
/* Two segments, point to first name segment */
NumSegments = 2;
Path++;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Dual Pathname (2 segments, Flags=%X)\n", Flags));
break;
case AML_MULTI_NAME_PREFIX:
/* More than one NameSeg, search rules do not apply */
SearchParentFlag = ACPI_NS_NO_UPSEARCH;
/* Extract segment count, point to first name segment */
Path++;
NumSegments = (UINT32) (UINT8) *Path;
Path++;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Multi Pathname (%u Segments, Flags=%X)\n",
NumSegments, Flags));
break;
default:
/*
* Not a Null name, no Dual or Multi prefix, hence there is
* only one name segment and Pathname is already pointing to it.
*/
NumSegments = 1;
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Simple Pathname (1 segment, Flags=%X)\n", Flags));
break;
}
ACPI_DEBUG_EXEC (AcpiNsPrintPathname (NumSegments, Path));
}
/*
* Search namespace for each segment of the name. Loop through and
* verify (or add to the namespace) each name segment.
*
* The object type is significant only at the last name
* segment. (We don't care about the types along the path, only
* the type of the final target object.)
*/
ThisSearchType = ACPI_TYPE_ANY;
CurrentNode = ThisNode;
while (NumSegments && CurrentNode)
{
NumSegments--;
if (!NumSegments)
{
/* This is the last segment, enable typechecking */
ThisSearchType = Type;
/*
* Only allow automatic parent search (search rules) if the caller
* requested it AND we have a single, non-fully-qualified NameSeg
*/
if ((SearchParentFlag != ACPI_NS_NO_UPSEARCH) &&
(Flags & ACPI_NS_SEARCH_PARENT))
{
LocalFlags |= ACPI_NS_SEARCH_PARENT;
}
/* Set error flag according to caller */
if (Flags & ACPI_NS_ERROR_IF_FOUND)
{
LocalFlags |= ACPI_NS_ERROR_IF_FOUND;
}
/* Set override flag according to caller */
if (Flags & ACPI_NS_OVERRIDE_IF_FOUND)
{
LocalFlags |= ACPI_NS_OVERRIDE_IF_FOUND;
}
}
/* Handle opcodes that create a new NameSeg via a full NamePath */
LocalInterpreterMode = InterpreterMode;
if ((Flags & ACPI_NS_PREFIX_MUST_EXIST) && (NumSegments > 0))
{
/* Every element of the path must exist (except for the final NameSeg) */
LocalInterpreterMode = ACPI_IMODE_EXECUTE;
}
/* Extract one ACPI name from the front of the pathname */
ACPI_MOVE_32_TO_32 (&SimpleName, Path);
/* Try to find the single (4 character) ACPI name */
Status = AcpiNsSearchAndEnter (SimpleName, WalkState, CurrentNode,
LocalInterpreterMode, ThisSearchType, LocalFlags, &ThisNode);
if (ACPI_FAILURE (Status))
{
if (Status == AE_NOT_FOUND)
{
#if !defined ACPI_ASL_COMPILER /* Note: iASL reports this error by itself, not needed here */
if (Flags & ACPI_NS_PREFIX_MUST_EXIST)
{
AcpiOsPrintf (ACPI_MSG_BIOS_ERROR
"Object does not exist: %4.4s\n", &SimpleName);
}
#endif
/* Name not found in ACPI namespace */
ACPI_DEBUG_PRINT ((ACPI_DB_NAMES,
"Name [%4.4s] not found in scope [%4.4s] %p\n",
(char *) &SimpleName, (char *) &CurrentNode->Name,
CurrentNode));
}
#ifdef ACPI_EXEC_APP
if ((Status == AE_ALREADY_EXISTS) &&
(ThisNode->Flags & ANOBJ_NODE_EARLY_INIT))
{
ThisNode->Flags &= ~ANOBJ_NODE_EARLY_INIT;
Status = AE_OK;
}
#endif
#ifdef ACPI_ASL_COMPILER
/*
* If this ACPI name already exists within the namespace as an
* external declaration, then mark the external as a conflicting
* declaration and proceed to process the current node as if it did
* not exist in the namespace. If this node is not processed as
* normal, then it could cause improper namespace resolution
* by failing to open a new scope.
*/
if (AcpiGbl_DisasmFlag &&
(Status == AE_ALREADY_EXISTS) &&
((ThisNode->Flags & ANOBJ_IS_EXTERNAL) ||
(WalkState && WalkState->Opcode == AML_EXTERNAL_OP)))
{
ThisNode->Flags &= ~ANOBJ_IS_EXTERNAL;
ThisNode->Type = (UINT8)ThisSearchType;
if (WalkState->Opcode != AML_EXTERNAL_OP)
{
AcpiDmMarkExternalConflict (ThisNode);
}
break;
}
#endif
*ReturnNode = ThisNode;
return_ACPI_STATUS (Status);
}
/* More segments to follow? */
if (NumSegments > 0)
{
/*
* If we have an alias to an object that opens a scope (such as a
* device or processor), we need to dereference the alias here so
* that we can access any children of the original node (via the
* remaining segments).
*/
if (ThisNode->Type == ACPI_TYPE_LOCAL_ALIAS)
{
if (!ThisNode->Object)
{
return_ACPI_STATUS (AE_NOT_EXIST);
}
if (AcpiNsOpensScope (((ACPI_NAMESPACE_NODE *)
ThisNode->Object)->Type))
{
ThisNode = (ACPI_NAMESPACE_NODE *) ThisNode->Object;
}
}
}
/* Special handling for the last segment (NumSegments == 0) */
else
{
/*
* Sanity typecheck of the target object:
*
* If 1) This is the last segment (NumSegments == 0)
* 2) And we are looking for a specific type
* (Not checking for TYPE_ANY)
* 3) Which is not an alias
* 4) Which is not a local type (TYPE_SCOPE)
* 5) And the type of target object is known (not TYPE_ANY)
* 6) And target object does not match what we are looking for
*
* Then we have a type mismatch. Just warn and ignore it.
*/
if ((TypeToCheckFor != ACPI_TYPE_ANY) &&
(TypeToCheckFor != ACPI_TYPE_LOCAL_ALIAS) &&
(TypeToCheckFor != ACPI_TYPE_LOCAL_METHOD_ALIAS) &&
(TypeToCheckFor != ACPI_TYPE_LOCAL_SCOPE) &&
(ThisNode->Type != ACPI_TYPE_ANY) &&
(ThisNode->Type != TypeToCheckFor))
{
/* Complain about a type mismatch */
ACPI_WARNING ((AE_INFO,
"NsLookup: Type mismatch on %4.4s (%s), searching for (%s)",
ACPI_CAST_PTR (char, &SimpleName),
AcpiUtGetTypeName (ThisNode->Type),
AcpiUtGetTypeName (TypeToCheckFor)));
}
/*
* If this is the last name segment and we are not looking for a
* specific type, but the type of found object is known, use that
* type to (later) see if it opens a scope.
*/
if (Type == ACPI_TYPE_ANY)
{
Type = ThisNode->Type;
}
}
/* Point to next name segment and make this node current */
Path += ACPI_NAMESEG_SIZE;
CurrentNode = ThisNode;
}
void
AcpiDmAddToExternalList (
char *Path,
UINT8 Type,
UINT32 Value)
{
char *ExternalPath;
ACPI_EXTERNAL_LIST *NewExternal;
ACPI_EXTERNAL_LIST *NextExternal;
ACPI_EXTERNAL_LIST *PrevExternal = NULL;
ACPI_STATUS Status;
if (!Path)
{
return;
}
/* Externalize the ACPI path */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Path,
NULL, &ExternalPath);
if (ACPI_FAILURE (Status))
{
return;
}
/* Ensure that we don't have duplicate externals */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
/* Allow upgrade of type from ANY */
if (!ACPI_STRCMP (ExternalPath, NextExternal->Path))
{
/* Duplicate method, check that the Value (ArgCount) is the same */
if ((NextExternal->Type == ACPI_TYPE_METHOD) &&
(NextExternal->Value != Value))
{
ACPI_ERROR ((AE_INFO, "Argument count mismatch for method %s %d %d",
NextExternal->Path, NextExternal->Value, Value));
}
if (NextExternal->Type == ACPI_TYPE_ANY)
{
NextExternal->Type = Type;
NextExternal->Value = Value;
}
ACPI_FREE (ExternalPath);
return;
}
NextExternal = NextExternal->Next;
}
/* Allocate and init a new External() descriptor */
NewExternal = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_LIST));
NewExternal->InternalPath = Path;
NewExternal->Path = ExternalPath;
NewExternal->Type = Type;
NewExternal->Value = Value;
NewExternal->Length = (UINT16) ACPI_STRLEN (ExternalPath);
/* Link the new descriptor into the global list, ordered by string length */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (NewExternal->Length <= NextExternal->Length)
{
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
NewExternal->Next = NextExternal;
return;
}
PrevExternal = NextExternal;
NextExternal = NextExternal->Next;
}
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
}
char *
AcpiNsBuildPrefixedPathname (
ACPI_GENERIC_STATE *PrefixScope,
const char *InternalPath)
{
ACPI_STATUS Status;
char *FullPath = NULL;
char *ExternalPath = NULL;
char *PrefixPath = NULL;
UINT32 PrefixPathLength = 0;
/* If there is a prefix, get the pathname to it */
if (PrefixScope && PrefixScope->Scope.Node)
{
PrefixPath = AcpiNsGetNormalizedPathname (PrefixScope->Scope.Node, TRUE);
if (PrefixPath)
{
PrefixPathLength = strlen (PrefixPath);
}
}
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, InternalPath,
NULL, &ExternalPath);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
/* Merge the prefix path and the path. 2 is for one dot and trailing null */
FullPath = ACPI_ALLOCATE_ZEROED (
PrefixPathLength + strlen (ExternalPath) + 2);
if (!FullPath)
{
goto Cleanup;
}
/* Don't merge if the External path is already fully qualified */
if (PrefixPath &&
(*ExternalPath != '\\') &&
(*ExternalPath != '^'))
{
strcat (FullPath, PrefixPath);
if (PrefixPath[1])
{
strcat (FullPath, ".");
}
}
AcpiNsNormalizePathname (ExternalPath);
strcat (FullPath, ExternalPath);
Cleanup:
if (PrefixPath)
{
ACPI_FREE (PrefixPath);
}
if (ExternalPath)
{
ACPI_FREE (ExternalPath);
}
return (FullPath);
}
