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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT COMPILER COMPONENTS --
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4 -- --
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5 -- S Y S T E M . P A R A M E T E R S --
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6 -- --
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7 -- B o d y --
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8 -- --
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131
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9 -- Copyright (C) 1995-2018, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 -- Version used on all VxWorks targets
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33
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34 package body System.Parameters is
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35
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36 -------------------------
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37 -- Adjust_Storage_Size --
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38 -------------------------
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39
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40 function Adjust_Storage_Size (Size : Size_Type) return Size_Type is
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41 begin
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42 if Size = Unspecified_Size then
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43 return Default_Stack_Size;
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44 elsif Size < Minimum_Stack_Size then
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45 return Minimum_Stack_Size;
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46 else
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47 return Size;
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48 end if;
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49 end Adjust_Storage_Size;
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50
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51 ------------------------
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52 -- Default_Stack_Size --
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53 ------------------------
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54
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55 function Default_Stack_Size return Size_Type is
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56 Default_Stack_Size : Integer;
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57 pragma Import (C, Default_Stack_Size, "__gl_default_stack_size");
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58 begin
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59 if Default_Stack_Size = -1 then
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60 if Stack_Check_Limits then
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61 return 32 * 1024;
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62 -- Extra stack to allow for 12K exception area.
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63 else
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64 return 20 * 1024;
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65 end if;
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66 else
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67 return Size_Type (Default_Stack_Size);
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68 end if;
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69 end Default_Stack_Size;
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70
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71 ------------------------
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72 -- Minimum_Stack_Size --
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73 ------------------------
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74
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75 function Minimum_Stack_Size return Size_Type is
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76 begin
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77 return 8 * 1024;
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78 end Minimum_Stack_Size;
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79
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80 end System.Parameters;
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