New Language: Ada

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45950 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 61 insertions, 0 deletions

diff --git a/gcc/ada/4wexcpol.adb b/gcc/ada/4wexcpol.adb
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+------------------------------------------------------------------------------
+--                                                                          --
+--                GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS               --
+--                                                                          --
+--                   A D A . E X C E P T I O N S . P O L L                  --
+--                (version supporting asynchronous abort test)              --
+--                                                                          --
+--                                  B o d y                                 --
+--                                                                          --
+--                             $Revision: 1.9 $
+--                                                                          --
+--          Copyright (C) 1992-2000, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNARL 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 2,  or (at your option) any later ver- --
+-- sion. GNARL 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 GNARL; see file COPYING.  If not, write --
+-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
+-- MA 02111-1307, USA.                                                      --
+--                                                                          --
+-- As a special exception,  if other files  instantiate  generics from this --
+-- unit, or you link  this unit with other files  to produce an executable, --
+-- this  unit  does not  by itself cause  the resulting  executable  to  be --
+-- covered  by the  GNU  General  Public  License.  This exception does not --
+-- however invalidate  any other reasons why  the executable file  might be --
+-- covered by the  GNU Public License.                                      --
+--                                                                          --
+-- GNARL was developed by the GNARL team at Florida State University. It is --
+-- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
+-- State University (http://www.gnat.com).                                  --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This version is for targets that do not support per-thread asynchronous
+--  signals. On such targets, we require compilation with the -gnatP switch
+--  that activates periodic polling. Then in the body of the polling routine
+--  we test for asynchronous abort.
+
+--  NT, OS/2, HPUX/DCE and SCO currently use this file
+
+with System.Soft_Links;
+--  used for Check_Abort_Status
+
+separate (Ada.Exceptions)
+
+----------
+-- Poll --
+----------
+
+procedure Poll is
+begin
+   --  Test for asynchronous abort on each poll
+
+   if System.Soft_Links.Check_Abort_Status.all /= 0 then
+      raise Standard'Abort_Signal;
+   end if;
+end Poll;