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;
}
static void ACPI_SYSTEM_XFACE
AcpiEvNotifyDispatch (
void *Context)
{
ACPI_GENERIC_STATE *NotifyInfo = (ACPI_GENERIC_STATE *) Context;
ACPI_NOTIFY_HANDLER GlobalHandler = NULL;
void *GlobalContext = NULL;
ACPI_OPERAND_OBJECT *HandlerObj;
ACPI_FUNCTION_ENTRY ();
/*
* We will invoke a global notify handler if installed. This is done
* _before_ we invoke the per-device handler attached to the device.
*/
if (NotifyInfo->Notify.Value <= ACPI_MAX_SYS_NOTIFY)
{
/* Global system notification handler */
if (AcpiGbl_SystemNotify.Handler)
{
GlobalHandler = AcpiGbl_SystemNotify.Handler;
GlobalContext = AcpiGbl_SystemNotify.Context;
}
}
else
{
/* Global driver notification handler */
if (AcpiGbl_DeviceNotify.Handler)
{
GlobalHandler = AcpiGbl_DeviceNotify.Handler;
GlobalContext = AcpiGbl_DeviceNotify.Context;
}
}
/* Invoke the system handler first, if present */
if (GlobalHandler)
{
GlobalHandler (NotifyInfo->Notify.Node, NotifyInfo->Notify.Value,
GlobalContext);
}
/* Now invoke the per-device handler, if present */
HandlerObj = NotifyInfo->Notify.HandlerObj;
if (HandlerObj)
{
HandlerObj->Notify.Handler (NotifyInfo->Notify.Node,
NotifyInfo->Notify.Value,
HandlerObj->Notify.Context);
}
/* All done with the info object */
AcpiUtDeleteGenericState (NotifyInfo);
}
ACPI_STATUS
AcpiDsScopeStackPop (
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *ScopeInfo;
ACPI_GENERIC_STATE *NewScopeInfo;
ACPI_FUNCTION_TRACE ("DsScopeStackPop");
/*
* Pop scope info object off the stack.
*/
ScopeInfo = AcpiUtPopGenericState (&WalkState->ScopeInfo);
if (!ScopeInfo)
{
return_ACPI_STATUS (AE_STACK_UNDERFLOW);
}
WalkState->ScopeDepth--;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"[%.2d] Popped scope [%4.4s] (%10s), New scope -> ",
(UINT32) WalkState->ScopeDepth,
ScopeInfo->Scope.Node->Name.Ascii,
AcpiUtGetTypeName (ScopeInfo->Common.Value)));
NewScopeInfo = WalkState->ScopeInfo;
if (NewScopeInfo)
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
"[%4.4s] (%s)\n",
NewScopeInfo->Scope.Node->Name.Ascii,
AcpiUtGetTypeName (NewScopeInfo->Common.Value)));
}
else
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
"[\\___] (ROOT)\n"));
}
AcpiUtDeleteGenericState (ScopeInfo);
return_ACPI_STATUS (AE_OK);
}
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;
}
void
AcpiDsScopeStackClear (
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *ScopeInfo;
ACPI_FUNCTION_NAME ("DsScopeStackClear");
while (WalkState->ScopeInfo)
{
/* Pop a scope off the stack */
ScopeInfo = WalkState->ScopeInfo;
WalkState->ScopeInfo = ScopeInfo->Scope.Next;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Popped object type (%s)\n", AcpiUtGetTypeName (ScopeInfo->Common.Value)));
AcpiUtDeleteGenericState (ScopeInfo);
}
}
static ACPI_STATUS
AcpiDsResultStackPop (
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *State;
ACPI_FUNCTION_NAME (DsResultStackPop);
/* Check for stack underflow */
if (WalkState->Results == NULL)
{
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Result stack underflow - State=%p\n",
WalkState));
return (AE_AML_NO_OPERAND);
}
if (WalkState->ResultSize < ACPI_RESULTS_FRAME_OBJ_NUM)
{
ACPI_ERROR ((AE_INFO, "Insufficient result stack size"));
return (AE_AML_INTERNAL);
}
State = AcpiUtPopGenericState (&WalkState->Results);
AcpiUtDeleteGenericState (State);
/* Decrease the length of result stack by the length of frame */
WalkState->ResultSize -= ACPI_RESULTS_FRAME_OBJ_NUM;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"Result=%p RemainingResults=%X State=%p\n",
State, WalkState->ResultCount, WalkState));
return (AE_OK);
}
static void ACPI_SYSTEM_XFACE
AcpiEvNotifyDispatch (
void *Context)
{
ACPI_GENERIC_STATE *Info = (ACPI_GENERIC_STATE *) Context;
ACPI_OPERAND_OBJECT *HandlerObj;
ACPI_FUNCTION_ENTRY ();
/* Invoke a global notify handler if installed */
if (Info->Notify.Global->Handler)
{
Info->Notify.Global->Handler (Info->Notify.Node,
Info->Notify.Value,
Info->Notify.Global->Context);
}
/* Now invoke the local notify handler(s) if any are installed */
HandlerObj = Info->Notify.HandlerListHead;
while (HandlerObj)
{
HandlerObj->Notify.Handler (Info->Notify.Node,
Info->Notify.Value,
HandlerObj->Notify.Context);
HandlerObj = HandlerObj->Notify.Next[Info->Notify.HandlerListId];
}
/* All done with the info object */
AcpiUtDeleteGenericState (Info);
}
ACPI_STATUS
AcpiEvQueueNotifyRequest (
ACPI_NAMESPACE_NODE *Node,
UINT32 NotifyValue)
{
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT *HandlerListHead = NULL;
ACPI_GENERIC_STATE *Info;
UINT8 HandlerListId = 0;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_NAME (EvQueueNotifyRequest);
/* Are Notifies allowed on this object? */
if (!AcpiEvIsNotifyObject (Node))
{
return (AE_TYPE);
}
/* Get the correct notify list type (System or Device) */
if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
{
HandlerListId = ACPI_SYSTEM_HANDLER_LIST;
}
else
{
HandlerListId = ACPI_DEVICE_HANDLER_LIST;
}
/* Get the notify object attached to the namespace Node */
ObjDesc = AcpiNsGetAttachedObject (Node);
if (ObjDesc)
{
/* We have an attached object, Get the correct handler list */
HandlerListHead = ObjDesc->CommonNotify.NotifyList[HandlerListId];
}
/*
* If there is no notify handler (Global or Local)
* for this object, just ignore the notify
*/
if (!AcpiGbl_GlobalNotify[HandlerListId].Handler && !HandlerListHead)
{
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"No notify handler for Notify, ignoring (%4.4s, %X) node %p\n",
AcpiUtGetNodeName (Node), NotifyValue, Node));
return (AE_OK);
}
/* Setup notify info and schedule the notify dispatcher */
Info = AcpiUtCreateGenericState ();
if (!Info)
{
return (AE_NO_MEMORY);
}
Info->Common.DescriptorType = ACPI_DESC_TYPE_STATE_NOTIFY;
Info->Notify.Node = Node;
Info->Notify.Value = (UINT16) NotifyValue;
Info->Notify.HandlerListId = HandlerListId;
Info->Notify.HandlerListHead = HandlerListHead;
Info->Notify.Global = &AcpiGbl_GlobalNotify[HandlerListId];
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Dispatching Notify on [%4.4s] (%s) Value 0x%2.2X (%s) Node %p\n",
AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type),
NotifyValue, AcpiUtGetNotifyName (NotifyValue, ACPI_TYPE_ANY), Node));
Status = AcpiOsExecute (OSL_NOTIFY_HANDLER, AcpiEvNotifyDispatch,
Info);
if (ACPI_FAILURE (Status))
{
AcpiUtDeleteGenericState (Info);
}
return (Status);
}
ACPI_STATUS
AcpiPsParseAml (
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status;
ACPI_THREAD_STATE *Thread;
ACPI_THREAD_STATE *PrevWalkList = AcpiGbl_CurrentWalkList;
ACPI_WALK_STATE *PreviousWalkState;
ACPI_FUNCTION_TRACE (PsParseAml);
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
"Entered with WalkState=%p Aml=%p size=%X\n",
WalkState, WalkState->ParserState.Aml,
WalkState->ParserState.AmlSize));
if (!WalkState->ParserState.Aml)
{
return_ACPI_STATUS (AE_NULL_OBJECT);
}
/* Create and initialize a new thread state */
Thread = AcpiUtCreateThreadState ();
if (!Thread)
{
if (WalkState->MethodDesc)
{
/* Executing a control method - additional cleanup */
AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState);
}
AcpiDsDeleteWalkState (WalkState);
return_ACPI_STATUS (AE_NO_MEMORY);
}
WalkState->Thread = Thread;
/*
* If executing a method, the starting SyncLevel is this method's
* SyncLevel
*/
if (WalkState->MethodDesc)
{
WalkState->Thread->CurrentSyncLevel = WalkState->MethodDesc->Method.SyncLevel;
}
AcpiDsPushWalkState (WalkState, Thread);
/*
* This global allows the AML debugger to get a handle to the currently
* executing control method.
*/
AcpiGbl_CurrentWalkList = Thread;
/*
* Execute the walk loop as long as there is a valid Walk State. This
* handles nested control method invocations without recursion.
*/
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "State=%p\n", WalkState));
Status = AE_OK;
while (WalkState)
{
if (ACPI_SUCCESS (Status))
{
/*
* The ParseLoop executes AML until the method terminates
* or calls another method.
*/
Status = AcpiPsParseLoop (WalkState);
}
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
"Completed one call to walk loop, %s State=%p\n",
AcpiFormatException (Status), WalkState));
if (Status == AE_CTRL_TRANSFER)
{
/*
* A method call was detected.
* Transfer control to the called control method
*/
Status = AcpiDsCallControlMethod (Thread, WalkState, NULL);
if (ACPI_FAILURE (Status))
{
Status = AcpiDsMethodError (Status, WalkState);
}
/*
* If the transfer to the new method method call worked, a new walk
* state was created -- get it
*/
WalkState = AcpiDsGetCurrentWalkState (Thread);
continue;
}
else if (Status == AE_CTRL_TERMINATE)
{
Status = AE_OK;
}
else if ((Status != AE_OK) && (WalkState->MethodDesc))
{
/* Either the method parse or actual execution failed */
ACPI_ERROR_METHOD ("Method parse/execution failed",
WalkState->MethodNode, NULL, Status);
/* Check for possible multi-thread reentrancy problem */
if ((Status == AE_ALREADY_EXISTS) &&
(!(WalkState->MethodDesc->Method.InfoFlags & ACPI_METHOD_SERIALIZED)))
{
/*
* Method is not serialized and tried to create an object
* twice. The probable cause is that the method cannot
* handle reentrancy. Mark as "pending serialized" now, and
* then mark "serialized" when the last thread exits.
*/
WalkState->MethodDesc->Method.InfoFlags |=
ACPI_METHOD_SERIALIZED_PENDING;
}
}
/* We are done with this walk, move on to the parent if any */
WalkState = AcpiDsPopWalkState (Thread);
/* Reset the current scope to the beginning of scope stack */
AcpiDsScopeStackClear (WalkState);
/*
* If we just returned from the execution of a control method or if we
* encountered an error during the method parse phase, there's lots of
* cleanup to do
*/
if (((WalkState->ParseFlags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) ||
(ACPI_FAILURE (Status)))
{
AcpiDsTerminateControlMethod (WalkState->MethodDesc, WalkState);
}
/* Delete this walk state and all linked control states */
AcpiPsCleanupScope (&WalkState->ParserState);
PreviousWalkState = WalkState;
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE,
"ReturnValue=%p, ImplicitValue=%p State=%p\n",
WalkState->ReturnDesc, WalkState->ImplicitReturnObj, WalkState));
/* Check if we have restarted a preempted walk */
WalkState = AcpiDsGetCurrentWalkState (Thread);
if (WalkState)
{
if (ACPI_SUCCESS (Status))
{
/*
* There is another walk state, restart it.
* If the method return value is not used by the parent,
* The object is deleted
*/
if (!PreviousWalkState->ReturnDesc)
{
/*
* In slack mode execution, if there is no return value
* we should implicitly return zero (0) as a default value.
*/
if (AcpiGbl_EnableInterpreterSlack &&
!PreviousWalkState->ImplicitReturnObj)
{
PreviousWalkState->ImplicitReturnObj =
AcpiUtCreateIntegerObject ((UINT64) 0);
if (!PreviousWalkState->ImplicitReturnObj)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
}
/* Restart the calling control method */
Status = AcpiDsRestartControlMethod (WalkState,
PreviousWalkState->ImplicitReturnObj);
}
else
{
/*
* We have a valid return value, delete any implicit
* return value.
*/
AcpiDsClearImplicitReturn (PreviousWalkState);
Status = AcpiDsRestartControlMethod (WalkState,
PreviousWalkState->ReturnDesc);
}
if (ACPI_SUCCESS (Status))
{
WalkState->WalkType |= ACPI_WALK_METHOD_RESTART;
}
}
else
{
/* On error, delete any return object or implicit return */
AcpiUtRemoveReference (PreviousWalkState->ReturnDesc);
AcpiDsClearImplicitReturn (PreviousWalkState);
}
}
/*
* Just completed a 1st-level method, save the final internal return
* value (if any)
*/
else if (PreviousWalkState->CallerReturnDesc)
{
if (PreviousWalkState->ImplicitReturnObj)
{
*(PreviousWalkState->CallerReturnDesc) =
PreviousWalkState->ImplicitReturnObj;
}
else
{
/* NULL if no return value */
*(PreviousWalkState->CallerReturnDesc) =
PreviousWalkState->ReturnDesc;
}
}
else
{
if (PreviousWalkState->ReturnDesc)
{
/* Caller doesn't want it, must delete it */
AcpiUtRemoveReference (PreviousWalkState->ReturnDesc);
}
if (PreviousWalkState->ImplicitReturnObj)
{
/* Caller doesn't want it, must delete it */
AcpiUtRemoveReference (PreviousWalkState->ImplicitReturnObj);
}
}
AcpiDsDeleteWalkState (PreviousWalkState);
}
/* Normal exit */
AcpiExReleaseAllMutexes (Thread);
AcpiUtDeleteGenericState (ACPI_CAST_PTR (ACPI_GENERIC_STATE, Thread));
AcpiGbl_CurrentWalkList = PrevWalkList;
return_ACPI_STATUS (Status);
}
void
AcpiDsDeleteWalkState (
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *State;
ACPI_FUNCTION_TRACE_PTR (DsDeleteWalkState, WalkState);
if (!WalkState)
{
return;
}
if (WalkState->DescriptorType != ACPI_DESC_TYPE_WALK)
{
ACPI_ERROR ((AE_INFO, "%p is not a valid walk state",
WalkState));
return;
}
/* There should not be any open scopes */
if (WalkState->ParserState.Scope)
{
ACPI_ERROR ((AE_INFO, "%p walk still has a scope list",
WalkState));
AcpiPsCleanupScope (&WalkState->ParserState);
}
/* Always must free any linked control states */
while (WalkState->ControlState)
{
State = WalkState->ControlState;
WalkState->ControlState = State->Common.Next;
AcpiUtDeleteGenericState (State);
}
/* Always must free any linked parse states */
while (WalkState->ScopeInfo)
{
State = WalkState->ScopeInfo;
WalkState->ScopeInfo = State->Common.Next;
AcpiUtDeleteGenericState (State);
}
/* Always must free any stacked result states */
while (WalkState->Results)
{
State = WalkState->Results;
WalkState->Results = State->Common.Next;
AcpiUtDeleteGenericState (State);
}
ACPI_FREE (WalkState);
return_VOID;
}
ACPI_STATUS
AcpiDsExecEndControlOp (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *ControlState;
ACPI_FUNCTION_NAME (DsExecEndControlOp);
switch (Op->Common.AmlOpcode)
{
case AML_IF_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", Op));
/*
* Save the result of the predicate in case there is an
* ELSE to come
*/
WalkState->LastPredicate =
(BOOLEAN) WalkState->ControlState->Common.Value;
/*
* Pop the control state that was created at the start
* of the IF and free it
*/
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
break;
case AML_ELSE_OP:
break;
case AML_WHILE_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", Op));
ControlState = WalkState->ControlState;
if (ControlState->Common.Value)
{
/* Predicate was true, the body of the loop was just executed */
/*
* This infinite loop detection mechanism allows the interpreter
* to escape possibly infinite loops. This can occur in poorly
* written AML when the hardware does not respond within a while
* loop and the loop does not implement a timeout.
*/
if (ACPI_TIME_AFTER (AcpiOsGetTimer (),
ControlState->Control.LoopTimeout))
{
Status = AE_AML_LOOP_TIMEOUT;
break;
}
/*
* Go back and evaluate the predicate and maybe execute the loop
* another time
*/
Status = AE_CTRL_PENDING;
WalkState->AmlLastWhile =
ControlState->Control.AmlPredicateStart;
break;
}
/* Predicate was false, terminate this while loop */
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"[WHILE_OP] termination! Op=%p\n",Op));
/* Pop this control state and free it */
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
break;
case AML_RETURN_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"[RETURN_OP] Op=%p Arg=%p\n",Op, Op->Common.Value.Arg));
/*
* One optional operand -- the return value
* It can be either an immediate operand or a result that
* has been bubbled up the tree
*/
if (Op->Common.Value.Arg)
{
/* Since we have a real Return(), delete any implicit return */
AcpiDsClearImplicitReturn (WalkState);
/* Return statement has an immediate operand */
Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*/
Status = AcpiExResolveToValue (
&WalkState->Operands [0], WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* Get the return value and save as the last result
* value. This is the only place where WalkState->ReturnDesc
* is set to anything other than zero!
*/
WalkState->ReturnDesc = WalkState->Operands[0];
}
else if (WalkState->ResultCount)
{
/* Since we have a real Return(), delete any implicit return */
AcpiDsClearImplicitReturn (WalkState);
/*
* The return value has come from a previous calculation.
*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*
* Allow references created by the Index operator to return
* unchanged.
*/
if ((ACPI_GET_DESCRIPTOR_TYPE (WalkState->Results->Results.ObjDesc[0]) ==
ACPI_DESC_TYPE_OPERAND) &&
((WalkState->Results->Results.ObjDesc [0])->Common.Type ==
ACPI_TYPE_LOCAL_REFERENCE) &&
((WalkState->Results->Results.ObjDesc [0])->Reference.Class !=
ACPI_REFCLASS_INDEX))
{
Status = AcpiExResolveToValue (
&WalkState->Results->Results.ObjDesc [0], WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
WalkState->ReturnDesc = WalkState->Results->Results.ObjDesc [0];
}
else
{
/* No return operand */
if (WalkState->NumOperands)
{
AcpiUtRemoveReference (WalkState->Operands [0]);
}
WalkState->Operands[0] = NULL;
WalkState->NumOperands = 0;
WalkState->ReturnDesc = NULL;
}
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"Completed RETURN_OP State=%p, RetVal=%p\n",
WalkState, WalkState->ReturnDesc));
/* End the control method execution right now */
Status = AE_CTRL_TERMINATE;
break;
case AML_NOOP_OP:
/* Just do nothing! */
break;
case AML_BREAKPOINT_OP:
AcpiDbSignalBreakPoint (WalkState);
/* Call to the OSL in case OS wants a piece of the action */
Status = AcpiOsSignal (ACPI_SIGNAL_BREAKPOINT,
"Executed AML Breakpoint opcode");
break;
case AML_BREAK_OP:
case AML_CONTINUE_OP: /* ACPI 2.0 */
/* Pop and delete control states until we find a while */
while (WalkState->ControlState &&
(WalkState->ControlState->Control.Opcode != AML_WHILE_OP))
{
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
}
/* No while found? */
if (!WalkState->ControlState)
{
return (AE_AML_NO_WHILE);
}
/* Was: WalkState->AmlLastWhile = WalkState->ControlState->Control.AmlPredicateStart; */
WalkState->AmlLastWhile =
WalkState->ControlState->Control.PackageEnd;
/* Return status depending on opcode */
if (Op->Common.AmlOpcode == AML_BREAK_OP)
{
Status = AE_CTRL_BREAK;
}
else
{
Status = AE_CTRL_CONTINUE;
}
break;
default:
ACPI_ERROR ((AE_INFO, "Unknown control opcode=0x%X Op=%p",
Op->Common.AmlOpcode, Op));
Status = AE_AML_BAD_OPCODE;
break;
}
return (Status);
}
ACPI_STATUS
AcpiUtWalkPackageTree (
ACPI_OPERAND_OBJECT *SourceObject,
void *TargetObject,
ACPI_PKG_CALLBACK WalkCallback,
void *Context)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *StateList = NULL;
ACPI_GENERIC_STATE *State;
UINT32 ThisIndex;
ACPI_OPERAND_OBJECT *ThisSourceObj;
ACPI_FUNCTION_TRACE (UtWalkPackageTree);
State = AcpiUtCreatePkgState (SourceObject, TargetObject, 0);
if (!State)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
while (State)
{
/* Get one element of the package */
ThisIndex = State->Pkg.Index;
ThisSourceObj = (ACPI_OPERAND_OBJECT *)
State->Pkg.SourceObject->Package.Elements[ThisIndex];
/*
* Check for:
* 1) An uninitialized package element. It is completely
* legal to declare a package and leave it uninitialized
* 2) Not an internal object - can be a namespace node instead
* 3) Any type other than a package. Packages are handled in else
* case below.
*/
if ((!ThisSourceObj) ||
(ACPI_GET_DESCRIPTOR_TYPE (ThisSourceObj) != ACPI_DESC_TYPE_OPERAND) ||
(ThisSourceObj->Common.Type != ACPI_TYPE_PACKAGE))
{
Status = WalkCallback (ACPI_COPY_TYPE_SIMPLE, ThisSourceObj,
State, Context);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
State->Pkg.Index++;
while (State->Pkg.Index >= State->Pkg.SourceObject->Package.Count)
{
/*
* We've handled all of the objects at this level, This means
* that we have just completed a package. That package may
* have contained one or more packages itself.
*
* Delete this state and pop the previous state (package).
*/
AcpiUtDeleteGenericState (State);
State = AcpiUtPopGenericState (&StateList);
/* Finished when there are no more states */
if (!State)
{
/*
* We have handled all of the objects in the top level
* package just add the length of the package objects
* and exit
*/
return_ACPI_STATUS (AE_OK);
}
/*
* Go back up a level and move the index past the just
* completed package object.
*/
State->Pkg.Index++;
}
}
else
{
/* This is a subobject of type package */
Status = WalkCallback (ACPI_COPY_TYPE_PACKAGE, ThisSourceObj,
State, Context);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* Push the current state and create a new one
* The callback above returned a new target package object.
*/
AcpiUtPushGenericState (&StateList, State);
State = AcpiUtCreatePkgState (ThisSourceObj,
State->Pkg.ThisTargetObj, 0);
if (!State)
{
/* Free any stacked Update State objects */
while (StateList)
{
State = AcpiUtPopGenericState (&StateList);
AcpiUtDeleteGenericState (State);
}
return_ACPI_STATUS (AE_NO_MEMORY);
}
}
}
/* We should never get here */
return_ACPI_STATUS (AE_AML_INTERNAL);
}
ACPI_STATUS
AcpiUtUpdateObjectReference (
ACPI_OPERAND_OBJECT *Object,
UINT16 Action)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *StateList = NULL;
ACPI_OPERAND_OBJECT *NextObject = NULL;
ACPI_GENERIC_STATE *State;
UINT32 i;
ACPI_FUNCTION_TRACE_PTR (UtUpdateObjectReference, Object);
while (Object)
{
/* Make sure that this isn't a namespace handle */
if (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED)
{
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
"Object %p is NS handle\n", Object));
return_ACPI_STATUS (AE_OK);
}
/*
* All sub-objects must have their reference count incremented also.
* Different object types have different subobjects.
*/
switch (Object->Common.Type)
{
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
case ACPI_TYPE_THERMAL:
/* Update the notify objects for these types (if present) */
AcpiUtUpdateRefCount (Object->CommonNotify.SystemNotify, Action);
AcpiUtUpdateRefCount (Object->CommonNotify.DeviceNotify, Action);
break;
case ACPI_TYPE_PACKAGE:
/*
* We must update all the sub-objects of the package,
* each of whom may have their own sub-objects.
*/
for (i = 0; i < Object->Package.Count; i++)
{
/*
* Push each element onto the stack for later processing.
* Note: There can be null elements within the package,
* these are simply ignored
*/
Status = AcpiUtCreateUpdateStateAndPush (
Object->Package.Elements[i], Action, &StateList);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
}
break;
case ACPI_TYPE_BUFFER_FIELD:
NextObject = Object->BufferField.BufferObj;
break;
case ACPI_TYPE_LOCAL_REGION_FIELD:
NextObject = Object->Field.RegionObj;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
NextObject = Object->BankField.BankObj;
Status = AcpiUtCreateUpdateStateAndPush (
Object->BankField.RegionObj, Action, &StateList);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
NextObject = Object->IndexField.IndexObj;
Status = AcpiUtCreateUpdateStateAndPush (
Object->IndexField.DataObj, Action, &StateList);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
break;
case ACPI_TYPE_LOCAL_REFERENCE:
/*
* The target of an Index (a package, string, or buffer) or a named
* reference must track changes to the ref count of the index or
* target object.
*/
if ((Object->Reference.Class == ACPI_REFCLASS_INDEX) ||
(Object->Reference.Class== ACPI_REFCLASS_NAME))
{
NextObject = Object->Reference.Object;
}
break;
case ACPI_TYPE_REGION:
default:
break; /* No subobjects for all other types */
}
/*
* Now we can update the count in the main object. This can only
* happen after we update the sub-objects in case this causes the
* main object to be deleted.
*/
AcpiUtUpdateRefCount (Object, Action);
Object = NULL;
/* Move on to the next object to be updated */
if (NextObject)
{
Object = NextObject;
NextObject = NULL;
}
else if (StateList)
{
State = AcpiUtPopGenericState (&StateList);
Object = State->Update.Object;
AcpiUtDeleteGenericState (State);
}
}
return_ACPI_STATUS (AE_OK);
ErrorExit:
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not update object reference count"));
/* Free any stacked Update State objects */
while (StateList)
{
State = AcpiUtPopGenericState (&StateList);
AcpiUtDeleteGenericState (State);
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiEvQueueNotifyRequest (
ACPI_NAMESPACE_NODE *Node,
UINT32 NotifyValue)
{
ACPI_OPERAND_OBJECT *ObjDesc;
ACPI_OPERAND_OBJECT *HandlerObj = NULL;
ACPI_GENERIC_STATE *NotifyInfo;
ACPI_STATUS Status = AE_OK;
ACPI_FUNCTION_NAME (EvQueueNotifyRequest);
/*
* For value 3 (Ejection Request), some device method may need to be run.
* For value 2 (Device Wake) if _PRW exists, the _PS0 method may need
* to be run.
* For value 0x80 (Status Change) on the power button or sleep button,
* initiate soft-off or sleep operation?
*/
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n",
AcpiUtGetNodeName (Node), Node, NotifyValue,
AcpiUtGetNotifyName (NotifyValue)));
/* Get the notify object attached to the NS Node */
ObjDesc = AcpiNsGetAttachedObject (Node);
if (ObjDesc)
{
/* We have the notify object, Get the right handler */
switch (Node->Type)
{
/* Notify allowed only on these types */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_PROCESSOR:
if (NotifyValue <= ACPI_MAX_SYS_NOTIFY)
{
HandlerObj = ObjDesc->CommonNotify.SystemNotify;
}
else
{
HandlerObj = ObjDesc->CommonNotify.DeviceNotify;
}
break;
default:
/* All other types are not supported */
return (AE_TYPE);
}
}
/*
* If there is any handler to run, schedule the dispatcher.
* Check for:
* 1) Global system notify handler
* 2) Global device notify handler
* 3) Per-device notify handler
*/
if ((AcpiGbl_SystemNotify.Handler &&
(NotifyValue <= ACPI_MAX_SYS_NOTIFY)) ||
(AcpiGbl_DeviceNotify.Handler &&
(NotifyValue > ACPI_MAX_SYS_NOTIFY)) ||
HandlerObj)
{
NotifyInfo = AcpiUtCreateGenericState ();
if (!NotifyInfo)
{
return (AE_NO_MEMORY);
}
if (!HandlerObj)
{
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Executing system notify handler for Notify (%4.4s, %X) "
"node %p\n",
AcpiUtGetNodeName (Node), NotifyValue, Node));
}
NotifyInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_NOTIFY;
NotifyInfo->Notify.Node = Node;
NotifyInfo->Notify.Value = (UINT16) NotifyValue;
NotifyInfo->Notify.HandlerObj = HandlerObj;
Status = AcpiOsExecute (
OSL_NOTIFY_HANDLER, AcpiEvNotifyDispatch, NotifyInfo);
if (ACPI_FAILURE (Status))
{
AcpiUtDeleteGenericState (NotifyInfo);
}
}
else
{
/* There is no notify handler (per-device or system) for this device */
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"No notify handler for Notify (%4.4s, %X) node %p\n",
AcpiUtGetNodeName (Node), NotifyValue, Node));
}
return (Status);
}
ACPI_STATUS
AcpiUtUpdateObjectReference (
ACPI_OPERAND_OBJECT *Object,
UINT16 Action)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *StateList = NULL;
ACPI_OPERAND_OBJECT *NextObject = NULL;
ACPI_OPERAND_OBJECT *PrevObject;
ACPI_GENERIC_STATE *State;
UINT32 i;
ACPI_FUNCTION_NAME (UtUpdateObjectReference);
while (Object)
{
/* Make sure that this isn't a namespace handle */
if (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED)
{
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
"Object %p is NS handle\n", Object));
return (AE_OK);
}
/*
* All sub-objects must have their reference count incremented also.
* Different object types have different subobjects.
*/
switch (Object->Common.Type)
{
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
case ACPI_TYPE_THERMAL:
/*
* Update the notify objects for these types (if present)
* Two lists, system and device notify handlers.
*/
for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
{
PrevObject = Object->CommonNotify.NotifyList[i];
while (PrevObject)
{
NextObject = PrevObject->Notify.Next[i];
AcpiUtUpdateRefCount (PrevObject, Action);
PrevObject = NextObject;
}
}
break;
case ACPI_TYPE_PACKAGE:
/*
* We must update all the sub-objects of the package,
* each of whom may have their own sub-objects.
*/
for (i = 0; i < Object->Package.Count; i++)
{
/*
* Null package elements are legal and can be simply
* ignored.
*/
NextObject = Object->Package.Elements[i];
if (!NextObject)
{
continue;
}
switch (NextObject->Common.Type)
{
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* For these very simple sub-objects, we can just
* update the reference count here and continue.
* Greatly increases performance of this operation.
*/
AcpiUtUpdateRefCount (NextObject, Action);
break;
default:
/*
* For complex sub-objects, push them onto the stack
* for later processing (this eliminates recursion.)
*/
Status = AcpiUtCreateUpdateStateAndPush (
NextObject, Action, &StateList);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
break;
}
}
NextObject = NULL;
break;
case ACPI_TYPE_BUFFER_FIELD:
NextObject = Object->BufferField.BufferObj;
break;
case ACPI_TYPE_LOCAL_REGION_FIELD:
NextObject = Object->Field.RegionObj;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
NextObject = Object->BankField.BankObj;
Status = AcpiUtCreateUpdateStateAndPush (
Object->BankField.RegionObj, Action, &StateList);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
NextObject = Object->IndexField.IndexObj;
Status = AcpiUtCreateUpdateStateAndPush (
Object->IndexField.DataObj, Action, &StateList);
if (ACPI_FAILURE (Status))
{
goto ErrorExit;
}
break;
case ACPI_TYPE_LOCAL_REFERENCE:
/*
* The target of an Index (a package, string, or buffer) or a named
* reference must track changes to the ref count of the index or
* target object.
*/
if ((Object->Reference.Class == ACPI_REFCLASS_INDEX) ||
(Object->Reference.Class== ACPI_REFCLASS_NAME))
{
NextObject = Object->Reference.Object;
}
break;
case ACPI_TYPE_REGION:
default:
break; /* No subobjects for all other types */
}
/*
* Now we can update the count in the main object. This can only
* happen after we update the sub-objects in case this causes the
* main object to be deleted.
*/
AcpiUtUpdateRefCount (Object, Action);
Object = NULL;
/* Move on to the next object to be updated */
if (NextObject)
{
Object = NextObject;
NextObject = NULL;
}
else if (StateList)
{
State = AcpiUtPopGenericState (&StateList);
Object = State->Update.Object;
AcpiUtDeleteGenericState (State);
}
}
return (AE_OK);
ErrorExit:
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not update object reference count"));
/* Free any stacked Update State objects */
while (StateList)
{
State = AcpiUtPopGenericState (&StateList);
AcpiUtDeleteGenericState (State);
}
return (Status);
}
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);
}
ACPI_STATUS
AcpiDsExecEndControlOp (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *ControlState;
ACPI_FUNCTION_NAME ("DsExecEndControlOp");
switch (Op->Common.AmlOpcode)
{
case AML_IF_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[IF_OP] Op=%p\n", Op));
/*
* Save the result of the predicate in case there is an
* ELSE to come
*/
WalkState->LastPredicate =
(BOOLEAN) WalkState->ControlState->Common.Value;
/*
* Pop the control state that was created at the start
* of the IF and free it
*/
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
break;
case AML_ELSE_OP:
break;
case AML_WHILE_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] Op=%p\n", Op));
if (WalkState->ControlState->Common.Value)
{
/* Predicate was true, go back and evaluate it again! */
Status = AE_CTRL_PENDING;
}
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "[WHILE_OP] termination! Op=%p\n", Op));
/* Pop this control state and free it */
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
WalkState->AmlLastWhile = ControlState->Control.AmlPredicateStart;
AcpiUtDeleteGenericState (ControlState);
break;
case AML_RETURN_OP:
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"[RETURN_OP] Op=%p Arg=%p\n",Op, Op->Common.Value.Arg));
/*
* One optional operand -- the return value
* It can be either an immediate operand or a result that
* has been bubbled up the tree
*/
if (Op->Common.Value.Arg)
{
/* Return statement has an immediate operand */
Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*/
Status = AcpiExResolveToValue (&WalkState->Operands [0], WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
/*
* Get the return value and save as the last result
* value. This is the only place where WalkState->ReturnDesc
* is set to anything other than zero!
*/
WalkState->ReturnDesc = WalkState->Operands[0];
}
else if ((WalkState->Results) &&
(WalkState->Results->Results.NumResults > 0))
{
/*
* The return value has come from a previous calculation.
*
* If value being returned is a Reference (such as
* an arg or local), resolve it now because it may
* cease to exist at the end of the method.
*
* Allow references created by the Index operator to return unchanged.
*/
if ((ACPI_GET_DESCRIPTOR_TYPE (WalkState->Results->Results.ObjDesc[0]) == ACPI_DESC_TYPE_OPERAND) &&
(ACPI_GET_OBJECT_TYPE (WalkState->Results->Results.ObjDesc [0]) == ACPI_TYPE_LOCAL_REFERENCE) &&
((WalkState->Results->Results.ObjDesc [0])->Reference.Opcode != AML_INDEX_OP))
{
Status = AcpiExResolveToValue (&WalkState->Results->Results.ObjDesc [0], WalkState);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
WalkState->ReturnDesc = WalkState->Results->Results.ObjDesc [0];
}
else
{
/* No return operand */
if (WalkState->NumOperands)
{
AcpiUtRemoveReference (WalkState->Operands [0]);
}
WalkState->Operands [0] = NULL;
WalkState->NumOperands = 0;
WalkState->ReturnDesc = NULL;
}
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"Completed RETURN_OP State=%p, RetVal=%p\n",
WalkState, WalkState->ReturnDesc));
/* End the control method execution right now */
Status = AE_CTRL_TERMINATE;
break;
case AML_NOOP_OP:
/* Just do nothing! */
break;
case AML_BREAK_POINT_OP:
/* Call up to the OS service layer to handle this */
Status = AcpiOsSignal (ACPI_SIGNAL_BREAKPOINT, "Executed AML Breakpoint opcode");
/* If and when it returns, all done. */
break;
case AML_BREAK_OP:
case AML_CONTINUE_OP: /* ACPI 2.0 */
/* Pop and delete control states until we find a while */
while (WalkState->ControlState &&
(WalkState->ControlState->Control.Opcode != AML_WHILE_OP))
{
ControlState = AcpiUtPopGenericState (&WalkState->ControlState);
AcpiUtDeleteGenericState (ControlState);
}
/* No while found? */
if (!WalkState->ControlState)
{
return (AE_AML_NO_WHILE);
}
/* Was: WalkState->AmlLastWhile = WalkState->ControlState->Control.AmlPredicateStart; */
WalkState->AmlLastWhile = WalkState->ControlState->Control.PackageEnd;
/* Return status depending on opcode */
if (Op->Common.AmlOpcode == AML_BREAK_OP)
{
Status = AE_CTRL_BREAK;
}
else
{
Status = AE_CTRL_CONTINUE;
}
break;
default:
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown control opcode=%X Op=%p\n",
Op->Common.AmlOpcode, Op));
Status = AE_AML_BAD_OPCODE;
break;
}
return (Status);
}