-- GHDL Run Time (GRT) - Symbolization using gcc libbacktrace. -- Copyright (C) 2015 Tristan Gingold -- -- GHDL is free software; you can redistribute it and/or modify it under -- the terms of the GNU General Public License as published by the Free -- Software Foundation; either version 2, or (at your option) any later -- version. -- -- GHDL is distributed in the hope that it will be useful, but WITHOUT ANY -- WARRANTY; without even the implied warranty of MERCHANTABILITY or -- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- for more details. -- -- You should have received a copy of the GNU General Public License -- along with GCC; see the file COPYING. If not, write to the Free -- Software Foundation, 59 Temple Place - Suite 330, Boston, MA -- 02111-1307, USA. -- -- As a special exception, if other files instantiate generics from this -- unit, or you link this unit with other files to produce an executable, -- this unit does not by itself cause the resulting executable to be -- covered by the GNU General Public License. This exception does not -- however invalidate any other reasons why the executable file might be -- covered by the GNU Public License. with System; use System; package body Grt.Backtraces.Gcc is -- From backtrace.h type Backtrace_Error_Callback is access procedure (Data : System.Address; Msg : Address; Errnum : Integer); pragma Convention (C, Backtrace_Error_Callback); type Backtrace_State is null record; pragma Convention (C, Backtrace_State); type Backtrace_State_Acc is access all Backtrace_State; pragma Convention (C, Backtrace_State_Acc); function Backtrace_Create_State (Filename : Address; Threaded : Integer; Error_Callback : Backtrace_Error_Callback; Data : System.Address) return Backtrace_State_Acc; pragma Import (C, Backtrace_Create_State); type Backtrace_Full_Callback is access function (Data : System.Address; Pc : Address; Filename : System.Address; Lineno : Integer; Function_Name : System.Address) return Integer; pragma Convention (C, Backtrace_Full_Callback); function Backtrace_Pcinfo (State : Backtrace_State_Acc; Pc : Address; Callback : Backtrace_Full_Callback; Error_Callback : Backtrace_Error_Callback; Data : System.Address) return Integer; pragma Import (C, Backtrace_Pcinfo); State : Backtrace_State_Acc; Initialized : Boolean := False; Res_Filename : System.Address; Res_Lineno : Natural; Res_Subprg : System.Address; procedure Error_Cb (Data : Address; Msg : Address; Errnum : Integer); pragma Convention (C, Error_Cb); procedure Error_Cb (Data : Address; Msg : Address; Errnum : Integer) is begin null; end Error_Cb; function Cb (Data : System.Address; Pc : Address; Filename : System.Address; Lineno : Integer; Function_Name : System.Address) return Integer; pragma Convention (C, Cb); function Cb (Data : System.Address; Pc : Address; Filename : System.Address; Lineno : Integer; Function_Name : System.Address) return Integer is begin if Res_Filename = Null_Address then Res_Filename := Filename; Res_Lineno := Lineno; Res_Subprg := Function_Name; end if; return 0; end Cb; procedure Symbolizer (Pc : System.Address; Filename : out System.Address; Lineno : out Natural; Subprg : out System.Address) is Res : Integer; begin if not Initialized then Initialized := True; State := Backtrace_Create_State (Null_Address, 0, Error_Cb'Access, Null_Address); end if; Res_Filename := Null_Address; Res_Lineno := 0; Res_Subprg := Null_Address; if State /= null then Res := Backtrace_Pcinfo (State, Pc, Cb'access, Error_Cb'Access, Null_Address); end if; Filename := Res_Filename; Lineno := Res_Lineno; Subprg := Res_Subprg; end Symbolizer; end Grt.Backtraces.Gcc;