gcc/ada/s-scaval.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                          GNAT RUNTIME COMPONENTS                         --
   4 --                                                                          --
   5 --                  S Y S T E M . S C A L A R _ V A L U E S                 --
   6 --                                 S p e c                                  --
   7 --                                                                          --
   8 --                            $Revision: 1.2 $
   9 --                                                                          --
  10 --             Copyright (C) 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 --  This package defines the constants used for initializing scalar values
  36 --  when pragma Initialize_Scalars is used. The actual values are defined
  37 --  in the binder generated file. This package contains the Ada names that
  38 --  are used by the generated code, which are linked to the actual values
  39 --  by the use of pragma Import.
  40
  41 package System.Scalar_Values is
  42 pragma Pure (Scalar_Values);
  43
  44    type Byte1 is mod 2 **  8;
  45    type Byte2 is mod 2 ** 16;
  46    type Byte4 is mod 2 ** 32;
  47    type Byte8 is mod 2 ** 64;
  48
  49    IS_Is1 : constant Byte1;           -- Initialize 1 byte signed value
  50    IS_Is2 : constant Byte2;           -- Initialize 2 byte signed value
  51    IS_Is4 : constant Byte4;           -- Initialize 4 byte signed value
  52    IS_Is8 : constant Byte8;           -- Initialize 8 byte signed value
  53    IS_Iu1 : constant Byte1;           -- Initialize 1 byte unsigned value
  54    IS_Iu2 : constant Byte2;           -- Initialize 2 byte unsigned value
  55    IS_Iu4 : constant Byte4;           -- Initialize 4 byte unsigned value
  56    IS_Iu8 : constant Byte8;           -- Initialize 8 byte unsigned value
  57    IS_Isf : constant Short_Float;     -- Initialize short float value
  58    IS_Ifl : constant Float;           -- Initialize float value
  59    IS_Ilf : constant Long_Float;      -- Initialize long float value
  60    IS_Ill : constant Long_Long_Float; -- Initialize long long float value
  61
  62    pragma Import (Ada, IS_Is1, "__gnat_Is1");
  63    pragma Import (Ada, IS_Is2, "__gnat_Is2");
  64    pragma Import (Ada, IS_Is4, "__gnat_Is4");
  65    pragma Import (Ada, IS_Is8, "__gnat_Is8");
  66    pragma Import (Ada, IS_Iu1, "__gnat_Iu1");
  67    pragma Import (Ada, IS_Iu2, "__gnat_Iu2");
  68    pragma Import (Ada, IS_Iu4, "__gnat_Iu4");
  69    pragma Import (Ada, IS_Iu8, "__gnat_Iu8");
  70    pragma Import (Ada, IS_Isf, "__gnat_Isf");
  71    pragma Import (Ada, IS_Ifl, "__gnat_Ifl");
  72    pragma Import (Ada, IS_Ilf, "__gnat_Ilf");
  73    pragma Import (Ada, IS_Ill, "__gnat_Ill");
  74
  75 end System.Scalar_Values;