PR target/16201
[official-gcc.git] / gcc / ada / s-parame-linux.adb
blob694318bf54b37019c99528a964f726e9dc2f8077
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- S Y S T E M . P A R A M E T E R S --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1995-2004 Free Software Foundation, Inc. --
10 -- --
11 -- GNAT 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. GNAT 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 GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, 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 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
31 -- --
32 ------------------------------------------------------------------------------
34 -- This is the Linux (native) specific version
36 package body System.Parameters is
38 -------------------------
39 -- Adjust_Storage_Size --
40 -------------------------
42 function Adjust_Storage_Size (Size : Size_Type) return Size_Type is
43 begin
44 if Size = Unspecified_Size then
45 return Default_Stack_Size;
47 elsif Size < Minimum_Stack_Size then
48 return Minimum_Stack_Size;
50 else
51 return Size;
52 end if;
53 end Adjust_Storage_Size;
55 ------------------------
56 -- Default_Stack_Size --
57 ------------------------
59 function Default_Stack_Size return Size_Type is
60 begin
61 return 2 * 1024 * 1024;
62 end Default_Stack_Size;
64 ------------------------
65 -- Minimum_Stack_Size --
66 ------------------------
68 function Minimum_Stack_Size return Size_Type is
69 begin
70 -- 12K is required for stack-checking to work on this target, using the
71 -- System.Stack_Checking runtime facility and possibly relying on the
72 -- stack greedy GCC scheme to propagate an exception in the ZCX case.
74 return 12 * 1024;
75 end Minimum_Stack_Size;
77 end System.Parameters;