1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME COMPONENTS -- 4-- -- 5-- S Y S T E M . T R A C E B A C K . S Y M B O L I C -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 1999-2015, AdaCore -- 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 3, 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. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32-- This is the default implementation for platforms where the full capability 33-- is not supported. It returns tracebacks as lists of hexadecimal addresses 34-- of the form "0x...". 35 36pragma Polling (Off); 37-- We must turn polling off for this unit, because otherwise we can get 38-- elaboration circularities when polling is turned on. 39 40with Ada.Exceptions.Traceback; use Ada.Exceptions.Traceback; 41with System.Address_Image; 42 43package body System.Traceback.Symbolic is 44 45 ------------------------ 46 -- Symbolic_Traceback -- 47 ------------------------ 48 49 function Symbolic_Traceback 50 (Traceback : System.Traceback_Entries.Tracebacks_Array) return String 51 is 52 begin 53 if Traceback'Length = 0 then 54 return ""; 55 56 else 57 declare 58 Img : String := System.Address_Image (Traceback (Traceback'First)); 59 60 Result : String (1 .. (Img'Length + 3) * Traceback'Length); 61 Last : Natural := 0; 62 63 begin 64 for J in Traceback'Range loop 65 Img := System.Address_Image (Traceback (J)); 66 Result (Last + 1 .. Last + 2) := "0x"; 67 Last := Last + 2; 68 Result (Last + 1 .. Last + Img'Length) := Img; 69 Last := Last + Img'Length + 1; 70 Result (Last) := ' '; 71 end loop; 72 73 Result (Last) := ASCII.LF; 74 return Result (1 .. Last); 75 end; 76 end if; 77 end Symbolic_Traceback; 78 79 function Symbolic_Traceback 80 (E : Ada.Exceptions.Exception_Occurrence) return String 81 is 82 begin 83 return Symbolic_Traceback (Ada.Exceptions.Traceback.Tracebacks (E)); 84 end Symbolic_Traceback; 85 86end System.Traceback.Symbolic; 87