gcc/ada/s-traceb.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                     S Y S T E M . T R A C E B A C K                      --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                                                                          --
  10 --          Copyright (C) 1999-2001 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 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 --  This is the default version of this package
  36
  37 package body System.Traceback is
  38
  39    ------------------
  40    -- C_Call_Chain --
  41    ------------------
  42
  43    function C_Call_Chain
  44      (Traceback : System.Address;
  45       Max_Len   : Natural)
  46       return      Natural
  47    is
  48       Val : Natural;
  49
  50    begin
  51       Call_Chain (Traceback, Max_Len, Val);
  52       return Val;
  53    end C_Call_Chain;
  54
  55    ----------------
  56    -- Call_Chain --
  57    ----------------
  58
  59    function Backtrace
  60      (Traceback   : System.Address;
  61       Len         : Integer;
  62       Exclude_Min : System.Address;
  63       Exclude_Max : System.Address)
  64       return        Integer;
  65    pragma Import (C, Backtrace, "__gnat_backtrace");
  66
  67    procedure Call_Chain
  68      (Traceback : System.Address;
  69       Max_Len   : Natural;
  70       Len       : out Natural;
  71       Exclude_Min,
  72       Exclude_Max : System.Address := System.Null_Address)
  73    is
  74    begin
  75       Len := Backtrace (Traceback, Max_Len, Exclude_Min, Exclude_Max);
  76    end Call_Chain;
  77
  78 end System.Traceback;