-- --
-- S p e c --
-- --
--- --
--- Copyright (C) 1992-2000 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2007, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- See runtime routine Ada.Exceptions for full details on the format and
-- content of these tables.
- procedure Initialize;
- -- Initializes these data structures for a new main unit file
-
procedure Expand_At_End_Handler (HSS : Node_Id; Block : Node_Id);
-- Given a handled statement sequence, HSS, for which the At_End_Proc
-- field is set, and which currently has no exception handlers, this
-- is also called to expand the special exception handler built for
-- accept bodies (see Exp_Ch9.Build_Accept_Body).
- procedure Generate_Unit_Exception_Table;
- -- Procedure called by main driver to generate unit exception table if
- -- zero cost exceptions are enabled. See System.Exceptions for details.
+ function Find_Local_Handler
+ (Ename : Entity_Id;
+ Nod : Node_Id) return Node_Id;
+ -- This function searches for a local exception handler that will handle
+ -- the exception named by Ename. If such a local hander exists, then the
+ -- corresponding N_Exception_Handler is returned. If no such handler is
+ -- found then Empty is returned. In order to match and return True, the
+ -- handler may not have a choice parameter specification. Nod is the raise
+ -- node that references the handler.
+
+ function Get_Local_Raise_Call_Entity return Entity_Id;
+ -- This function is provided for use by the back end in conjunction with
+ -- generation of Local_Raise calls when an exception raise is converted to
+ -- a goto statement. If Local_Raise is defined, its entity is returned,
+ -- if not, Empty is returned (in which case the call is silently skipped).
+
+ function Get_RT_Exception_Entity (R : RT_Exception_Code) return Entity_Id;
+ -- This function is provided for use by the back end in conjunction with
+ -- generation of Local_Raise calls when an exception raise is converted to
+ -- a goto statement. The argument is the reason code which would be used
+ -- to determine which Rcheck_nn procedure to call. The returned result is
+ -- the exception entity to be passed to Local_Raise.
function Is_Non_Ada_Error (E : Entity_Id) return Boolean;
-- This function is provided for Gigi use. It returns True if operating on
-- VMS, and the argument E is the entity for System.Aux_Dec.Non_Ada_Error.
-- This is used to generate the special matching code for this exception.
- procedure Remove_Handler_Entries (N : Node_Id);
- -- This procedure is called when optimization circuits determine that
- -- an entire subtree can be removed. If the subtree contains handler
- -- entries in zero cost exception mode, then such removal can lead to
- -- dangling references to non-existent handlers in the handler table.
- -- This procedure removes such references.
-
- --------------------------------------
- -- Subprogram_Descriptor Generation --
- --------------------------------------
-
- -- Subprogram descriptors are required for all subprograms, including
- -- explicit subprograms defined in the program, subprograms that are
- -- imported via pragma Import, and also for the implicit elaboration
- -- subprograms used to elaborate package specs and bodies.
-
- procedure Generate_Subprogram_Descriptor_For_Package
- (N : Node_Id;
- Spec : Entity_Id);
- -- This is used to create a descriptor for the implicit elaboration
- -- procedure for a package spec of body. The compiler only generates
- -- such descriptors if the package spec or body contains exception
- -- handlers (either explicitly in the case of a body, or from generic
- -- package instantiations). N is the node for the package body or
- -- spec, and Spec is the package body or package entity respectively.
- -- N must be a compilation unit, and the descriptor is placed at
- -- the end of the actions for the auxiliary compilation unit node.
-
- procedure Generate_Subprogram_Descriptor_For_Subprogram
- (N : Node_Id;
- Spec : Entity_Id);
- -- This is used to create a desriptor for a subprogram, both those
- -- present in the source, and those implicitly generated by code
- -- expansion. N is the subprogram body node, and Spec is the entity
- -- for the subprogram. The descriptor is placed at the end of the
- -- Last exception handler, or, if there are no handlers, at the end
- -- of the statement sequence.
-
- procedure Generate_Subprogram_Descriptor_For_Imported_Subprogram
- (Spec : Entity_Id;
- Slist : List_Id);
- -- This is used to create a descriptor for an imported subprogram.
- -- Such descriptors are needed for propagation of exceptions through
- -- such subprograms. The descriptor never references any handlers,
- -- and is appended to the given Slist.
+ procedure Possible_Local_Raise (N : Node_Id; E : Entity_Id);
+ -- This procedure is called whenever node N might cause the back end
+ -- to generate a local raise for a local Constraint/Program/Storage_Error
+ -- exception. It deals with generating a warning if there is no local
+ -- handler (and restriction No_Exception_Propagation is set), or if there
+ -- is a local handler marking that it has a local raise. E is the entity
+ -- of the corresponding exception.
end Exp_Ch11;
OSDN Git Service
