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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME COMPONENTS --
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4 -- --
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5 -- S Y S T E M . T R A C E B A C K . S Y M B O L I C --
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6 -- --
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7 -- B o d y --
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8 -- --
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9 -- Copyright (C) 1999-2019, AdaCore --
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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 -- This is the default implementation for platforms where the full capability
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33 -- is not supported. It returns tracebacks as lists of hexadecimal addresses
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34 -- of the form "0x...".
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35
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36 pragma Polling (Off);
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37 -- We must turn polling off for this unit, because otherwise we can get
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38 -- elaboration circularities when polling is turned on.
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39
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40 with Ada.Exceptions.Traceback; use Ada.Exceptions.Traceback;
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41 with System.Address_Image;
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42
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43 package body System.Traceback.Symbolic is
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44
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45 -- Note that Suppress_Hex is ignored in this version of this package.
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46
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47 ------------------------
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48 -- Symbolic_Traceback --
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49 ------------------------
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50
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51 function Symbolic_Traceback
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52 (Traceback : System.Traceback_Entries.Tracebacks_Array) return String
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53 is
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54 begin
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55 if Traceback'Length = 0 then
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56 return "";
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57
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58 else
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59 declare
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60 Img : String := System.Address_Image (Traceback (Traceback'First));
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61
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62 Result : String (1 .. (Img'Length + 3) * Traceback'Length);
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63 Last : Natural := 0;
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64
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65 begin
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66 for J in Traceback'Range loop
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67 Img := System.Address_Image (Traceback (J));
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68 Result (Last + 1 .. Last + 2) := "0x";
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69 Last := Last + 2;
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70 Result (Last + 1 .. Last + Img'Length) := Img;
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71 Last := Last + Img'Length + 1;
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72 Result (Last) := ' ';
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73 end loop;
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74
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75 Result (Last) := ASCII.LF;
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76 return Result (1 .. Last);
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77 end;
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78 end if;
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79 end Symbolic_Traceback;
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80
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81 -- "No_Hex" is ignored in this version, because otherwise we have nothing
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82 -- at all to print.
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83
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84 function Symbolic_Traceback_No_Hex
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85 (Traceback : System.Traceback_Entries.Tracebacks_Array) return String is
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86 begin
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87 return Symbolic_Traceback (Traceback);
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88 end Symbolic_Traceback_No_Hex;
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89
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90 function Symbolic_Traceback
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91 (E : Ada.Exceptions.Exception_Occurrence) return String
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92 is
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93 begin
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94 return Symbolic_Traceback (Ada.Exceptions.Traceback.Tracebacks (E));
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95 end Symbolic_Traceback;
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96
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97 function Symbolic_Traceback_No_Hex
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98 (E : Ada.Exceptions.Exception_Occurrence) return String is
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99 begin
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100 return Symbolic_Traceback (E);
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101 end Symbolic_Traceback_No_Hex;
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102
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103 ------------------
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104 -- Enable_Cache --
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105 ------------------
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106
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107 procedure Enable_Cache (Include_Modules : Boolean := False) is
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108 begin
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109 null;
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110 end Enable_Cache;
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111
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112 end System.Traceback.Symbolic;
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