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Definition at line 145 of file dswload2.c. Referenced by AcpiDsExecBeginOp(), and AcpiDsInitCallbacks(). {
ACPI_PARSE_OBJECT *Op;
ACPI_NAMESPACE_NODE *Node;
ACPI_STATUS Status;
ACPI_OBJECT_TYPE ObjectType;
char *BufferPtr;
UINT32 Flags;
ACPI_FUNCTION_TRACE (DsLoad2BeginOp);
Op = WalkState->Op;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
if (Op)
{
if ((WalkState->ControlState) &&
(WalkState->ControlState->Common.State ==
ACPI_CONTROL_CONDITIONAL_EXECUTING))
{
/* We are executing a while loop outside of a method */
Status = AcpiDsExecBeginOp (WalkState, OutOp);
return_ACPI_STATUS (Status);
}
/* We only care about Namespace opcodes here */
if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) &&
(WalkState->Opcode != AML_INT_NAMEPATH_OP)) ||
(!(WalkState->OpInfo->Flags & AML_NAMED)))
{
return_ACPI_STATUS (AE_OK);
}
/* Get the name we are going to enter or lookup in the namespace */
if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
{
/* For Namepath op, get the path string */
BufferPtr = Op->Common.Value.String;
if (!BufferPtr)
{
/* No name, just exit */
return_ACPI_STATUS (AE_OK);
}
}
else
{
/* Get name from the op */
BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name);
}
}
else
{
/* Get the namestring from the raw AML */
BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState);
}
/* Map the opcode into an internal object type */
ObjectType = WalkState->OpInfo->ObjectType;
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType));
switch (WalkState->Opcode)
{
case AML_FIELD_OP:
case AML_BANK_FIELD_OP:
case AML_INDEX_FIELD_OP:
Node = NULL;
Status = AE_OK;
break;
case AML_INT_NAMEPATH_OP:
/*
* The NamePath is an object reference to an existing object.
* Don't enter the name into the namespace, but look it up
* for use later.
*/
Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
WalkState, &(Node));
break;
case AML_SCOPE_OP:
/* Special case for Scope(\) -> refers to the Root node */
if (Op && (Op->Named.Node == AcpiGbl_RootNode))
{
Node = Op->Named.Node;
Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
else
{
/*
* The Path is an object reference to an existing object.
* Don't enter the name into the namespace, but look it up
* for use later.
*/
Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
WalkState, &(Node));
if (ACPI_FAILURE (Status))
{
#ifdef ACPI_ASL_COMPILER
if (Status == AE_NOT_FOUND)
{
Status = AE_OK;
}
else
{
ACPI_ERROR_NAMESPACE (BufferPtr, Status);
}
#else
ACPI_ERROR_NAMESPACE (BufferPtr, Status);
#endif
return_ACPI_STATUS (Status);
}
}
/*
* We must check to make sure that the target is
* one of the opcodes that actually opens a scope
*/
switch (Node->Type)
{
case ACPI_TYPE_ANY:
case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
case ACPI_TYPE_DEVICE:
case ACPI_TYPE_POWER:
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
/* These are acceptable types */
break;
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
/*
* These types we will allow, but we will change the type.
* This enables some existing code of the form:
*
* Name (DEB, 0)
* Scope (DEB) { ... }
*/
ACPI_WARNING ((AE_INFO,
"Type override - [%4.4s] had invalid type (%s) "
"for Scope operator, changed to type ANY\n",
AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
Node->Type = ACPI_TYPE_ANY;
WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
break;
default:
/* All other types are an error */
ACPI_ERROR ((AE_INFO,
"Invalid type (%s) for target of "
"Scope operator [%4.4s] (Cannot override)",
AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
return (AE_AML_OPERAND_TYPE);
}
break;
default:
/* All other opcodes */
if (Op && Op->Common.Node)
{
/* This op/node was previously entered into the namespace */
Node = Op->Common.Node;
if (AcpiNsOpensScope (ObjectType))
{
Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
return_ACPI_STATUS (AE_OK);
}
/*
* Enter the named type into the internal namespace. We enter the name
* as we go downward in the parse tree. Any necessary subobjects that
* involve arguments to the opcode must be created as we go back up the
* parse tree later.
*
* Note: Name may already exist if we are executing a deferred opcode.
*/
if (WalkState->DeferredNode)
{
/* This name is already in the namespace, get the node */
Node = WalkState->DeferredNode;
Status = AE_OK;
break;
}
Flags = ACPI_NS_NO_UPSEARCH;
if (WalkState->PassNumber == ACPI_IMODE_EXECUTE)
{
/* Execution mode, node cannot already exist, node is temporary */
Flags |= ACPI_NS_ERROR_IF_FOUND;
if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
{
Flags |= ACPI_NS_TEMPORARY;
}
}
/* Add new entry or lookup existing entry */
Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node);
if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY))
{
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"***New Node [%4.4s] %p is temporary\n",
AcpiUtGetNodeName (Node), Node));
}
break;
}
if (ACPI_FAILURE (Status))
{
ACPI_ERROR_NAMESPACE (BufferPtr, Status);
return_ACPI_STATUS (Status);
}
if (!Op)
{
/* Create a new op */
Op = AcpiPsAllocOp (WalkState->Opcode);
if (!Op)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Initialize the new op */
if (Node)
{
Op->Named.Name = Node->Name.Integer;
}
*OutOp = Op;
}
/*
* Put the Node in the "op" object that the parser uses, so we
* can get it again quickly when this scope is closed
*/
Op->Common.Node = Node;
return_ACPI_STATUS (Status);
}
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