ACPI_STATUS
AcpiPsPushScope (
ACPI_PARSE_STATE *ParserState,
ACPI_PARSE_OBJECT *Op,
UINT32 RemainingArgs,
UINT32 ArgCount)
{
ACPI_GENERIC_STATE *Scope;
ACPI_FUNCTION_TRACE_PTR (PsPushScope, Op);
Scope = AcpiUtCreateGenericState ();
if (!Scope)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
Scope->Common.DescriptorType = ACPI_DESC_TYPE_STATE_PSCOPE;
Scope->ParseScope.Op = Op;
Scope->ParseScope.ArgList = RemainingArgs;
Scope->ParseScope.ArgCount = ArgCount;
Scope->ParseScope.PkgEnd = ParserState->PkgEnd;
/* Push onto scope stack */
AcpiUtPushGenericState (&ParserState->Scope, Scope);
if (ArgCount == ACPI_VAR_ARGS)
{
/* Multiple arguments */
Scope->ParseScope.ArgEnd = ParserState->PkgEnd;
}
else
{
/* Single argument */
Scope->ParseScope.ArgEnd = ACPI_TO_POINTER (ACPI_MAX_PTR);
}
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiUtCreatePkgStateAndPush (
void *InternalObject,
void *ExternalObject,
UINT16 Index,
ACPI_GENERIC_STATE **StateList)
{
ACPI_GENERIC_STATE *State;
ACPI_FUNCTION_ENTRY ();
State = AcpiUtCreatePkgState (InternalObject, ExternalObject, Index);
if (!State)
{
return (AE_NO_MEMORY);
}
AcpiUtPushGenericState (StateList, State);
return (AE_OK);
}
static ACPI_STATUS
AcpiDsResultStackPush (
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *State;
ACPI_FUNCTION_NAME (DsResultStackPush);
/* Check for stack overflow */
if (((UINT32) WalkState->ResultSize + ACPI_RESULTS_FRAME_OBJ_NUM) >
ACPI_RESULTS_OBJ_NUM_MAX)
{
ACPI_ERROR ((AE_INFO, "Result stack overflow: State=%p Num=%u",
WalkState, WalkState->ResultSize));
return (AE_STACK_OVERFLOW);
}
State = AcpiUtCreateGenericState ();
if (!State)
{
return (AE_NO_MEMORY);
}
State->Common.DescriptorType = ACPI_DESC_TYPE_STATE_RESULT;
AcpiUtPushGenericState (&WalkState->Results, State);
/* Increase the length of the result stack by the length of frame */
WalkState->ResultSize += ACPI_RESULTS_FRAME_OBJ_NUM;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Results=%p State=%p\n",
State, WalkState));
return (AE_OK);
}
ACPI_STATUS
AcpiDsScopeStackPush (
ACPI_NAMESPACE_NODE *Node,
ACPI_OBJECT_TYPE Type,
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *ScopeInfo;
ACPI_GENERIC_STATE *OldScopeInfo;
ACPI_FUNCTION_TRACE (DsScopeStackPush);
if (!Node)
{
/* Invalid scope */
ACPI_ERROR ((AE_INFO, "Null scope parameter"));
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Make sure object type is valid */
if (!AcpiUtValidObjectType (Type))
{
ACPI_WARNING ((AE_INFO,
"Invalid object type: 0x%X", Type));
}
/* Allocate a new scope object */
ScopeInfo = AcpiUtCreateGenericState ();
if (!ScopeInfo)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Init new scope object */
ScopeInfo->Common.DescriptorType = ACPI_DESC_TYPE_STATE_WSCOPE;
ScopeInfo->Scope.Node = Node;
ScopeInfo->Common.Value = (UINT16) Type;
WalkState->ScopeDepth++;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"[%.2d] Pushed scope ", (UINT32) WalkState->ScopeDepth));
OldScopeInfo = WalkState->ScopeInfo;
if (OldScopeInfo)
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
"[%4.4s] (%s)",
AcpiUtGetNodeName (OldScopeInfo->Scope.Node),
AcpiUtGetTypeName (OldScopeInfo->Common.Value)));
}
else
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, ACPI_NAMESPACE_ROOT));
}
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
", New scope -> [%4.4s] (%s)\n",
AcpiUtGetNodeName (ScopeInfo->Scope.Node),
AcpiUtGetTypeName (ScopeInfo->Common.Value)));
/* Push new scope object onto stack */
AcpiUtPushGenericState (&WalkState->ScopeInfo, ScopeInfo);
return_ACPI_STATUS (AE_OK);
}
ACPI_STATUS
AcpiDsExecBeginControlOp (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *ControlState;
ACPI_FUNCTION_NAME (DsExecBeginControlOp);
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n",
Op, Op->Common.AmlOpcode, WalkState));
switch (Op->Common.AmlOpcode)
{
case AML_WHILE_OP:
/*
* If this is an additional iteration of a while loop, continue.
* There is no need to allocate a new control state.
*/
if (WalkState->ControlState)
{
if (WalkState->ControlState->Control.AmlPredicateStart ==
(WalkState->ParserState.Aml - 1))
{
/* Reset the state to start-of-loop */
WalkState->ControlState->Common.State =
ACPI_CONTROL_CONDITIONAL_EXECUTING;
break;
}
}
/*lint -fallthrough */
case AML_IF_OP:
/*
* IF/WHILE: Create a new control state to manage these
* constructs. We need to manage these as a stack, in order
* to handle nesting.
*/
ControlState = AcpiUtCreateControlState ();
if (!ControlState)
{
Status = AE_NO_MEMORY;
break;
}
/*
* Save a pointer to the predicate for multiple executions
* of a loop
*/
ControlState->Control.AmlPredicateStart =
WalkState->ParserState.Aml - 1;
ControlState->Control.PackageEnd =
WalkState->ParserState.PkgEnd;
ControlState->Control.Opcode =
Op->Common.AmlOpcode;
ControlState->Control.LoopTimeout = AcpiOsGetTimer () +
(UINT64) (AcpiGbl_MaxLoopIterations * ACPI_100NSEC_PER_SEC);
/* Push the control state on this walk's control stack */
AcpiUtPushGenericState (&WalkState->ControlState, ControlState);
break;
case AML_ELSE_OP:
/* Predicate is in the state object */
/* If predicate is true, the IF was executed, ignore ELSE part */
if (WalkState->LastPredicate)
{
Status = AE_CTRL_TRUE;
}
break;
case AML_RETURN_OP:
break;
default:
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
AcpiDsExecBeginControlOp (
ACPI_WALK_STATE *WalkState,
ACPI_PARSE_OBJECT *Op)
{
ACPI_STATUS Status = AE_OK;
ACPI_GENERIC_STATE *ControlState;
ACPI_FUNCTION_NAME (DsExecBeginControlOp);
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p Opcode=%2.2X State=%p\n", Op,
Op->Common.AmlOpcode, WalkState));
switch (Op->Common.AmlOpcode)
{
case AML_IF_OP:
case AML_WHILE_OP:
/*
* IF/WHILE: Create a new control state to manage these
* constructs. We need to manage these as a stack, in order
* to handle nesting.
*/
ControlState = AcpiUtCreateControlState ();
if (!ControlState)
{
Status = AE_NO_MEMORY;
break;
}
/*
* Save a pointer to the predicate for multiple executions
* of a loop
*/
ControlState->Control.AmlPredicateStart = WalkState->ParserState.Aml - 1;
ControlState->Control.PackageEnd = WalkState->ParserState.PkgEnd;
ControlState->Control.Opcode = Op->Common.AmlOpcode;
/* Push the control state on this walk's control stack */
AcpiUtPushGenericState (&WalkState->ControlState, ControlState);
break;
case AML_ELSE_OP:
/* Predicate is in the state object */
/* If predicate is true, the IF was executed, ignore ELSE part */
if (WalkState->LastPredicate)
{
Status = AE_CTRL_TRUE;
}
break;
case AML_RETURN_OP:
break;
default:
break;
}
return (Status);
}
ACPI_STATUS
AcpiDsScopeStackPush (
ACPI_NAMESPACE_NODE *Node,
ACPI_OBJECT_TYPE Type,
ACPI_WALK_STATE *WalkState)
{
ACPI_GENERIC_STATE *ScopeInfo;
ACPI_GENERIC_STATE *OldScopeInfo;
ACPI_FUNCTION_TRACE ("DsScopeStackPush");
if (!Node)
{
/* Invalid scope */
ACPI_REPORT_ERROR (("DsScopeStackPush: null scope passed\n"));
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/* Make sure object type is valid */
if (!AcpiUtValidObjectType (Type))
{
ACPI_REPORT_WARNING (("DsScopeStackPush: type code out of range\n"));
}
/* Allocate a new scope object */
ScopeInfo = AcpiUtCreateGenericState ();
if (!ScopeInfo)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Init new scope object */
ScopeInfo->Common.DataType = ACPI_DESC_TYPE_STATE_WSCOPE;
ScopeInfo->Scope.Node = Node;
ScopeInfo->Common.Value = (UINT16) Type;
WalkState->ScopeDepth++;
ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
"[%.2d] Pushed scope ", (UINT32) WalkState->ScopeDepth));
OldScopeInfo = WalkState->ScopeInfo;
if (OldScopeInfo)
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
"[%4.4s] (%10s)",
OldScopeInfo->Scope.Node->Name.Ascii,
AcpiUtGetTypeName (OldScopeInfo->Common.Value)));
}
else
{
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
"[\\___] (%10s)", "ROOT"));
}
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC,
", New scope -> [%4.4s] (%s)\n",
ScopeInfo->Scope.Node->Name.Ascii,
AcpiUtGetTypeName (ScopeInfo->Common.Value)));
/* Push new scope object onto stack */
AcpiUtPushGenericState (&WalkState->ScopeInfo, ScopeInfo);
return_ACPI_STATUS (AE_OK);
}