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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . E X C E P T I O N S . L A S T _ C H A N C E _ H A N D L E R --
-- --
-- B o d y --
-- --
-- Copyright (C) 2003-2020, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
pragma Warnings (Off);
with System.Standard_Library;
pragma Warnings (On);
with GNAT.Debug_Utilities; use GNAT.Debug_Utilities;
with GNAT.IO; use GNAT.IO;
-- Default last chance handler for use with the full VxWorks 653 partition OS
-- Ada run-time library.
-- Logs error with health monitor, and dumps exception identity and argument
-- string for vxaddr2line for generation of a symbolic stack backtrace.
procedure Ada.Exceptions.Last_Chance_Handler (Except : Exception_Occurrence) is
----------------------
-- APEX definitions --
----------------------
pragma Warnings (Off);
type Error_Code_Type is (
Deadline_Missed,
Application_Error,
Numeric_Error,
Illegal_Request,
Stack_Overflow,
Memory_Violation,
Hardware_Fault,
Power_Fail);
pragma Warnings (On);
pragma Convention (C, Error_Code_Type);
-- APEX Health Management error codes
type Message_Addr_Type is new System.Address;
type Apex_Integer is range -(2 ** 31) .. (2 ** 31) - 1;
pragma Convention (C, Apex_Integer);
Max_Error_Message_Size : constant := 64;
type Error_Message_Size_Type is new Apex_Integer range
1 .. Max_Error_Message_Size;
pragma Warnings (Off);
type Return_Code_Type is (
No_Error, -- request valid and operation performed
No_Action, -- status of system unaffected by request
Not_Available, -- resource required by request unavailable
Invalid_Param, -- invalid parameter specified in request
Invalid_Config, -- parameter incompatible with configuration
Invalid_Mode, -- request incompatible with current mode
Timed_Out); -- time-out tied up with request has expired
pragma Warnings (On);
pragma Convention (C, Return_Code_Type);
-- APEX return codes
procedure Raise_Application_Error
(Error_Code : Error_Code_Type;
Message_Addr : Message_Addr_Type;
Length : Error_Message_Size_Type;
Return_Code : out Return_Code_Type);
pragma Import (C, Raise_Application_Error, "RAISE_APPLICATION_ERROR");
procedure Unhandled_Terminate;
pragma No_Return (Unhandled_Terminate);
pragma Import (C, Unhandled_Terminate, "__gnat_unhandled_terminate");
-- Perform system dependent shutdown code
procedure Adainit;
pragma Import (Ada, Adainit, "adainit");
Adainit_Addr : constant System.Address := Adainit'Code_Address;
-- Part of arguments to vxaddr2line
Result : Return_Code_Type;
Message : String :=
Exception_Name (Except) & ": " & ASCII.LF &
Exception_Message (Except) & ASCII.NUL;
Message_Length : Error_Message_Size_Type;
begin
New_Line;
Put_Line ("In last chance handler");
Put_Line (Message (1 .. Message'Length - 1));
New_Line;
Put_Line ("adainit and traceback addresses for vxaddr2line:");
Put (Image_C (Adainit_Addr)); Put (" ");
for J in 1 .. Except.Num_Tracebacks loop
Put (Image_C (Except.Tracebacks (J)));
Put (" ");
end loop;
New_Line;
if Message'Length > Error_Message_Size_Type'Last then
Message_Length := Error_Message_Size_Type'Last;
else
Message_Length := Message'Length;
end if;
Raise_Application_Error
(Error_Code => Application_Error,
Message_Addr => Message_Addr_Type (Message (1)'Address),
Length => Message_Length,
Return_Code => Result);
-- Shutdown the run-time library now. The rest of the procedure needs to be
-- careful not to use anything that would require runtime support. In
-- particular, functions returning strings are banned since the sec stack
-- is no longer functional.
System.Standard_Library.Adafinal;
Unhandled_Terminate;
end Ada.Exceptions.Last_Chance_Handler;
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