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) 1999-2018, 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 -- Note that Suppress_Hex is ignored in this version of this package. 46 47 ------------------------ 48 -- Symbolic_Traceback -- 49 ------------------------ 50 51 function Symbolic_Traceback 52 (Traceback : System.Traceback_Entries.Tracebacks_Array) return String 53 is 54 begin 55 if Traceback'Length = 0 then 56 return ""; 57 58 else 59 declare 60 Img : String := System.Address_Image (Traceback (Traceback'First)); 61 62 Result : String (1 .. (Img'Length + 3) * Traceback'Length); 63 Last : Natural := 0; 64 65 begin 66 for J in Traceback'Range loop 67 Img := System.Address_Image (Traceback (J)); 68 Result (Last + 1 .. Last + 2) := "0x"; 69 Last := Last + 2; 70 Result (Last + 1 .. Last + Img'Length) := Img; 71 Last := Last + Img'Length + 1; 72 Result (Last) := ' '; 73 end loop; 74 75 Result (Last) := ASCII.LF; 76 return Result (1 .. Last); 77 end; 78 end if; 79 end Symbolic_Traceback; 80 81 -- "No_Hex" is ignored in this version, because otherwise we have nothing 82 -- at all to print. 83 84 function Symbolic_Traceback_No_Hex 85 (Traceback : System.Traceback_Entries.Tracebacks_Array) return String is 86 begin 87 return Symbolic_Traceback (Traceback); 88 end Symbolic_Traceback_No_Hex; 89 90 function Symbolic_Traceback 91 (E : Ada.Exceptions.Exception_Occurrence) return String 92 is 93 begin 94 return Symbolic_Traceback (Ada.Exceptions.Traceback.Tracebacks (E)); 95 end Symbolic_Traceback; 96 97 function Symbolic_Traceback_No_Hex 98 (E : Ada.Exceptions.Exception_Occurrence) return String is 99 begin 100 return Symbolic_Traceback (E); 101 end Symbolic_Traceback_No_Hex; 102 103 ------------------ 104 -- Enable_Cache -- 105 ------------------ 106 107 procedure Enable_Cache (Include_Modules : Boolean := False) is 108 begin 109 null; 110 end Enable_Cache; 111 112end System.Traceback.Symbolic; 113