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Diffstat (limited to 'src/lib/gnat/s-atacco.ads')
| -rw-r--r-- | src/lib/gnat/s-atacco.ads | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/lib/gnat/s-atacco.ads b/src/lib/gnat/s-atacco.ads new file mode 100644 index 0000000000..fb6232d14a --- /dev/null +++ b/src/lib/gnat/s-atacco.ads @@ -0,0 +1,63 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- S Y S T E M . A D D R E S S _ T O _ A C C E S S _ C O N V E R S I O N S -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2012, Free Software Foundation, Inc. -- +-- -- +-- This specification is derived from the Ada Reference Manual for use with -- +-- GNAT. The copyright notice above, and the license provisions that follow -- +-- apply solely to the contents of the part following the private keyword. -- +-- -- +-- 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. -- +-- -- +-- As a special exception under Section 7 of GPL version 3, you are granted -- +-- additional permissions described in the GCC Runtime Library Exception, -- +-- version 3.1, as published by the Free Software Foundation. -- +-- -- +-- You should have received a copy of the GNU General Public License and -- +-- a copy of the GCC Runtime Library Exception along with this program; -- +-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- +-- <http://www.gnu.org/licenses/>. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +generic + type Object (<>) is limited private; + +package System.Address_To_Access_Conversions is + pragma Preelaborate; + + pragma Compile_Time_Warning + (Object'Unconstrained_Array, + "Object is unconstrained array type" & ASCII.LF & + "To_Pointer results may not have bounds"); + + type Object_Pointer is access all Object; + for Object_Pointer'Size use Standard'Address_Size; + + pragma No_Strict_Aliasing (Object_Pointer); + -- Strictly speaking, this routine should not be used to generate pointers + -- to other than proper values of the proper type, but in practice, this + -- is done all the time. This pragma stops the compiler from doing some + -- optimizations that may cause unexpected results based on the assumption + -- of no strict aliasing. + + function To_Pointer (Value : Address) return Object_Pointer; + function To_Address (Value : Object_Pointer) return Address; + + pragma Import (Intrinsic, To_Pointer); + pragma Import (Intrinsic, To_Address); + +end System.Address_To_Access_Conversions; |