gcc/ada/s-vxwork-x86.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                  GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                --
   4 --                                                                          --
   5 --                        S Y S T E M . V X W O R K S                       --
   6 --                                                                          --
   7 --                                   S p e c                                --
   8 --                                                                          --
   9 --            Copyright (C) 1998-2005 Free Software Foundation, Inc.        --
  10 --                                                                          --
  11 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNARL was developed by the GNARL team at Florida State University.       --
  30 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 --  This is the x86 VxWorks version of this package
  35
  36 package System.VxWorks is
  37    pragma Preelaborate;
  38
  39    --  Floating point context record. x86 version
  40
  41    --  There are two kinds of FP_CONTEXT for this architecture, corresponding
  42    --  to newer and older processors. The type is defined in fppI86lib.h as a
  43    --  union. The form used depends on the versions of the save and restore
  44    --  routines that are selected by the user (these versions are provided in
  45    --  vxwork.ads). Since we do not examine the contents of these objects, it
  46    --  is sufficient to declare the type as of the required size: 512 bytes.
  47
  48    type FP_CONTEXT is array (1 .. 128) of Integer;
  49    for FP_CONTEXT'Alignment use 4;
  50    for FP_CONTEXT'Size use 512 * Storage_Unit;
  51    pragma Convention (C, FP_CONTEXT);
  52
  53    Num_HW_Interrupts : constant := 256;
  54    --  Number of entries in hardware interrupt vector table
  55
  56 end System.VxWorks;