void
ApCheckPredefinedReturnValue (
ACPI_PARSE_OBJECT *Op,
ASL_METHOD_INFO *MethodInfo)
{
UINT32 Index;
ACPI_PARSE_OBJECT *ReturnValueOp;
const ACPI_PREDEFINED_INFO *ThisName;
/*
* Check parent method for a match against the predefined name list.
*
* Note: Disable compiler errors/warnings because any errors will be
* caught when analyzing the parent method. Eliminates duplicate errors.
*/
Gbl_AllExceptionsDisabled = TRUE;
Index = ApCheckForPredefinedName (MethodInfo->Op,
MethodInfo->Op->Asl.NameSeg);
Gbl_AllExceptionsDisabled = FALSE;
switch (Index)
{
case ACPI_EVENT_RESERVED_NAME: /* _Lxx/_Exx/_Wxx/_Qxx methods */
/* No return value expected, warn if there is one */
ApCheckForUnexpectedReturnValue (Op, MethodInfo);
return;
case ACPI_NOT_RESERVED_NAME: /* No underscore or _Txx or _xxx name not matched */
case ACPI_PREDEFINED_NAME: /* Resource Name or reserved scope name */
case ACPI_COMPILER_RESERVED_NAME: /* A _Txx that was not emitted by compiler */
/* Just return, nothing to do */
return;
default: /* A standard predefined ACPI name */
ThisName = &AcpiGbl_PredefinedMethods[Index];
if (!ThisName->Info.ExpectedBtypes)
{
/* No return value expected, warn if there is one */
ApCheckForUnexpectedReturnValue (Op, MethodInfo);
return;
}
/* Get the object returned, it is the next argument */
ReturnValueOp = Op->Asl.Child;
switch (ReturnValueOp->Asl.ParseOpcode)
{
case PARSEOP_ZERO:
case PARSEOP_ONE:
case PARSEOP_ONES:
case PARSEOP_INTEGER:
case PARSEOP_STRING_LITERAL:
case PARSEOP_BUFFER:
case PARSEOP_PACKAGE:
/* Static data return object - check against expected type */
ApCheckObjectType (ThisName->Info.Name, ReturnValueOp,
ThisName->Info.ExpectedBtypes, ACPI_NOT_PACKAGE_ELEMENT);
/* For packages, check the individual package elements */
if (ReturnValueOp->Asl.ParseOpcode == PARSEOP_PACKAGE)
{
ApCheckPackage (ReturnValueOp, ThisName);
}
break;
default:
/*
* All other ops are very difficult or impossible to typecheck at
* compile time. These include all Localx, Argx, and method
* invocations. Also, NAMESEG and NAMESTRING because the type of
* any named object can be changed at runtime (for example,
* CopyObject will change the type of the target object.)
*/
break;
}
}
}
void
ApCheckPredefinedReturnValue (
ACPI_PARSE_OBJECT *Op,
ASL_METHOD_INFO *MethodInfo)
{
UINT32 Index;
ACPI_PARSE_OBJECT *ReturnValueOp;
/* Check parent method for a match against the predefined name list */
Index = ApCheckForPredefinedName (MethodInfo->Op,
MethodInfo->Op->Asl.NameSeg);
switch (Index)
{
case ACPI_EVENT_RESERVED_NAME: /* _Lxx/_Exx/_Wxx/_Qxx methods */
/* No return value expected, warn if there is one */
ApCheckForUnexpectedReturnValue (Op, MethodInfo);
return;
case ACPI_NOT_RESERVED_NAME: /* No underscore or _Txx or _xxx name not matched */
case ACPI_PREDEFINED_NAME: /* Resource Name or reserved scope name */
case ACPI_COMPILER_RESERVED_NAME: /* A _Txx that was not emitted by compiler */
/* Just return, nothing to do */
return;
default: /* A standard predefined ACPI name */
if (!PredefinedNames[Index].Info.ExpectedBtypes)
{
/* No return value expected, warn if there is one */
ApCheckForUnexpectedReturnValue (Op, MethodInfo);
return;
}
/* Get the object returned, it is the next argument */
ReturnValueOp = Op->Asl.Child;
switch (ReturnValueOp->Asl.ParseOpcode)
{
case PARSEOP_ZERO:
case PARSEOP_ONE:
case PARSEOP_ONES:
case PARSEOP_INTEGER:
case PARSEOP_STRING_LITERAL:
case PARSEOP_BUFFER:
case PARSEOP_PACKAGE:
/* Static data return object - check against expected type */
ApCheckObjectType (PredefinedNames[Index].Info.Name,
ReturnValueOp,
PredefinedNames[Index].Info.ExpectedBtypes);
break;
default:
/*
* All other ops are very difficult or impossible to typecheck at
* compile time. These include all Localx, Argx, and method
* invocations. Also, NAMESEG and NAMESTRING because the type of
* any named object can be changed at runtime (for example,
* CopyObject will change the type of the target object.)
*/
break;
}
}
}
