gcc/ada/s-stalib.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --              S Y S T E M . S T A N D A R D _ L I B R A R Y               --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                                                                          --
  10 --          Copyright (C) 1995-2001 Free Software Foundation, Inc.          --
  11 --                                                                          --
  12 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  15 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  20 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, USA.                                                      --
  22 --                                                                          --
  23 -- As a special exception,  if other files  instantiate  generics from this --
  24 -- unit, or you link  this unit with other files  to produce an executable, --
  25 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  26 -- covered  by the  GNU  General  Public  License.  This exception does not --
  27 -- however invalidate  any other reasons why  the executable file  might be --
  28 -- covered by the  GNU Public License.                                      --
  29 --                                                                          --
  30 -- GNAT was originally developed  by the GNAT team at  New York University. --
  31 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 --  The purpose of this body is simply to ensure that the two with'ed units
  36 --  are properly included in the link. They are not with'ed from the spec
  37 --  of System.Standard_Library, since this would cause order of elaboration
  38 --  problems (Elaborate_Body would have the same problem).
  39
  40 pragma Warnings (Off);
  41 --  Kill warnings from unused withs
  42
  43 pragma Polling (Off);
  44 --  We must turn polling off for this unit, because otherwise we get
  45 --  elaboration circularities with Ada.Exceptions if polling is on.
  46
  47 with System.Soft_Links;
  48 --  Referenced directly from generated code using external symbols so it
  49 --  must always be present in a build, even if no unit has a direct with
  50 --  of this unit. Also referenced from exception handling routines.
  51 --  This is needed for programs that don't use exceptions explicitly but
  52 --  direct calls to Ada.Exceptions are generated by gigi (for example,
  53 --  by calling __gnat_raise_constraint_error directly).
  54
  55 with System.Memory;
  56 --  Referenced directly from generated code using external symbols, so it
  57 --  must always be present in a build, even if no unit has a direct with
  58 --  of this unit.
  59
  60 package body System.Standard_Library is
  61
  62    Runtime_Finalized : Boolean := False;
  63    --  Set to True when adafinal is called. Used to ensure that subsequent
  64    --  calls to adafinal after the first have no effect.
  65
  66    Inside_Elab_Final_Code : Integer := 0;
  67    pragma Export (C, Inside_Elab_Final_Code, "__gnat_inside_elab_final_code");
  68    --  ???This variable is obsolete starting from 29/08 but cannot be removed
  69    --  ???right away due to the bootstrap problems
  70
  71    --------------------------
  72    -- Abort_Undefer_Direct --
  73    --------------------------
  74
  75    procedure Abort_Undefer_Direct is
  76    begin
  77       System.Soft_Links.Abort_Undefer.all;
  78    end Abort_Undefer_Direct;
  79
  80    --------------
  81    -- Adafinal --
  82    --------------
  83
  84    procedure Adafinal is
  85    begin
  86       if not Runtime_Finalized then
  87          Runtime_Finalized := True;
  88          System.Soft_Links.Adafinal.all;
  89       end if;
  90    end Adafinal;
  91
  92 end System.Standard_Library;