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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- V X L I N K . M A I N --
-- --
-- B o d y --
-- --
-- Copyright (C) 2018, AdaCore --
-- --
-- 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- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- 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 COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- VxLink is a helper tool used as a wrapper around g++/gcc to build VxWorks
-- DKM (Downloadable Kernel Modules).
-- Such DKM is a partially linked object that contains entry points for
-- constructors and destructors. This tool thus uses g++ to generate an
-- intermediate partially linked object, retrieves the list of constructors
-- and destructors in it and produces a C file that lists those ctors/dtors
-- in a way that is understood be VxWorks kernel. It then links this file
-- with the intermediate object to produce a valid DKM.
pragma Ada_2012;
with GNAT.OS_Lib; use GNAT.OS_Lib;
with VxLink.Link; use VxLink.Link;
with VxLink.Bind; use VxLink.Bind;
procedure VxLink.Main is
Linker : VxLink_Linker;
Binder : VxLink_Binder;
VSB_Dir : String_Access := Getenv ("VSB_DIR");
begin
Initialize (Linker);
if Is_Error_State then
return;
end if;
Do_Initial_Link (Linker);
if Is_Error_State then
return;
end if;
if not Needs_CDtor (Linker) then
-- Initial link is enough, let's return
return;
end if;
if VSB_Dir /= null and then VSB_Dir'Length > 0 then
declare
DKM_Tag_File : constant String :=
Normalize_Pathname
("krnl/tags/dkm.tags", VSB_Dir.all);
begin
if Is_Regular_File (DKM_Tag_File) then
Parse_Tag_File (Binder, DKM_Tag_File);
end if;
end;
end if;
Initialize (Binder, Object_File => Partial_Object (Linker));
Emit_CTDT (Binder, Namespace => Namespace (Linker));
Do_Final_Link (Linker, CTDT_File (Binder));
Free (VSB_Dir);
end VxLink.Main;
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