diff options
Diffstat (limited to 'gcc/ada/s-stoele.ads')
| -rw-r--r-- | gcc/ada/s-stoele.ads | 55 |
1 files changed, 40 insertions, 15 deletions
diff --git a/gcc/ada/s-stoele.ads b/gcc/ada/s-stoele.ads index 3d9f7c22b96..b22a1ccf113 100644 --- a/gcc/ada/s-stoele.ads +++ b/gcc/ada/s-stoele.ads @@ -6,10 +6,32 @@ -- -- -- S p e c -- -- -- --- This specification is adapted from the Ada Reference Manual for use with -- --- GNAT. In accordance with the copyright of that document, you can freely -- --- copy and modify this specification, provided that if you redistribute a -- --- modified version, any changes that you have made are clearly indicated. -- +-- Copyright (C) 2002-2003 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 implementation dependent sections of this file. -- +-- -- +-- 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 2, 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. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; 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. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ @@ -17,18 +39,21 @@ -- extra declarations that can be introduced into System using Extend_System. -- It is a good idea to avoid use clauses for this package! -pragma Warnings (Off); --- This is to stop bootstrap problems with the use of Inline_Always --- To be removed (along with redundant Inline pragmas) in 3.13. - package System.Storage_Elements is pragma Pure (Storage_Elements); -- Note that we take advantage of the implementation permission to make -- this unit Pure instead of Preelaborable; see RM 13.7.1(15). +-- We also add the pragma Pure_Function to the operations in this package, +-- because otherwise functions with parameters derived from Address are +-- treated as non-pure by the back-end (see exp_ch6.adb). This is because +-- in many cases such a parameter is used to hide read/out access to objects, +-- and it would be unsafe to treat such functions as pure. + type Storage_Offset is range -(2 ** (Standard."-" (Standard'Address_Size, 1))) .. +(2 ** (Standard."-" (Standard'Address_Size, 1))) - 1; + -- Note: the reason for the qualification of "-" here by Standard is -- that we have a current bug in GNAT that otherwise causes a bogus -- ambiguity when this unit is analyzed in an Rtsfind context. @@ -46,31 +71,31 @@ pragma Pure (Storage_Elements); function "+" (Left : Address; Right : Storage_Offset) return Address; pragma Convention (Intrinsic, "+"); - pragma Inline ("+"); pragma Inline_Always ("+"); + pragma Pure_Function ("+"); function "+" (Left : Storage_Offset; Right : Address) return Address; pragma Convention (Intrinsic, "+"); - pragma Inline ("+"); pragma Inline_Always ("+"); + pragma Pure_Function ("+"); function "-" (Left : Address; Right : Storage_Offset) return Address; pragma Convention (Intrinsic, "-"); - pragma Inline ("-"); pragma Inline_Always ("-"); + pragma Pure_Function ("+"); function "-" (Left, Right : Address) return Storage_Offset; pragma Convention (Intrinsic, "-"); - pragma Inline ("-"); pragma Inline_Always ("-"); + pragma Pure_Function ("-"); function "mod" (Left : Address; Right : Storage_Offset) return Storage_Offset; pragma Convention (Intrinsic, "mod"); - pragma Inline ("mod"); pragma Inline_Always ("mod"); + pragma Pure_Function ("mod"); -- Conversion to/from integers @@ -78,12 +103,12 @@ pragma Pure (Storage_Elements); function To_Address (Value : Integer_Address) return Address; pragma Convention (Intrinsic, To_Address); - pragma Inline (To_Address); pragma Inline_Always (To_Address); + pragma Pure_Function (To_Address); function To_Integer (Value : Address) return Integer_Address; pragma Convention (Intrinsic, To_Integer); - pragma Inline (To_Integer); pragma Inline_Always (To_Integer); + pragma Pure_Function (To_Integer); end System.Storage_Elements; |