-- --
-- B o d y --
-- --
--- Copyright (C) 1992-2005 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
-- --
-- GNARL 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 2, or (at your option) any later ver- --
--- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
+-- 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. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNARL; see file COPYING. If not, write --
--- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
--- Boston, MA 02110-1301, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- 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. --
+-- 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/>. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. --
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
-- --
------------------------------------------------------------------------------
--- This is a Solaris version of this package.
-
--- Make a careful study of all signals available under the OS,
--- to see which need to be reserved, kept always unmasked,
--- or kept always unmasked.
+-- This is a Solaris version of this package
--- Be on the lookout for special signals that
--- may be used by the thread library.
+-- Make a careful study of all signals available under the OS, to see which
+-- need to be reserved, kept always unmasked, or kept always unmasked.
-with Interfaces.C;
--- used for int
-
-with System.OS_Interface;
--- used for various Constants, Signal and types
+-- Be on the lookout for special signals that may be used by the thread
+-- library.
package body System.Interrupt_Management is
-- Notify_Exception --
----------------------
- -- This function identifies the Ada exception to be raised using
- -- the information when the system received a synchronous signal.
- -- Since this function is machine and OS dependent, different code
- -- has to be provided for different target.
+ -- This function identifies the Ada exception to be raised using the
+ -- information when the system received a synchronous signal. Since this
+ -- function is machine and OS dependent, different code has to be provided
+ -- for different target.
procedure Notify_Exception
(signo : Signal;
info : access siginfo_t;
context : access ucontext_t)
is
- pragma Unreferenced (context);
+ pragma Unreferenced (info);
+
begin
- -- Check that treatment of exception propagation here
- -- is consistent with treatment of the abort signal in
- -- System.Task_Primitives.Operations.
+ -- Perform the necessary context adjustments prior to a raise
+ -- from a signal handler.
+
+ Adjust_Context_For_Raise (signo, context.all'Address);
+
+ -- Check that treatment of exception propagation here is consistent with
+ -- treatment of the abort signal in System.Task_Primitives.Operations.
case signo is
when SIGFPE =>
- case info.si_code is
- when FPE_INTDIV |
- FPE_INTOVF |
- FPE_FLTDIV |
- FPE_FLTOVF |
- FPE_FLTUND |
- FPE_FLTRES |
- FPE_FLTINV |
- FPE_FLTSUB =>
-
- raise Constraint_Error;
-
- when others =>
- pragma Assert (False);
- null;
- end case;
-
- when SIGILL | SIGSEGV | SIGBUS =>
+ raise Constraint_Error;
+ when SIGILL =>
+ raise Program_Error;
+ when SIGSEGV =>
+ raise Storage_Error;
+ when SIGBUS =>
raise Storage_Error;
-
when others =>
- pragma Assert (False);
null;
end case;
end Notify_Exception;
Result := sigemptyset (mask'Access);
pragma Assert (Result = 0);
- -- ??? For the same reason explained above, we can't mask these
- -- signals because otherwise we won't be able to catch more than
- -- one signal.
+ -- ??? For the same reason explained above, we can't mask these signals
+ -- because otherwise we won't be able to catch more than one signal.
act.sa_mask := mask;
Reserve (SIGINT) := False;
end if;
- -- We do not have Signal 0 in reality. We just use this value
- -- to identify not existing signals (see s-intnam.ads). Therefore,
- -- Signal 0 should not be used in all signal related operations hence
- -- mark it as reserved.
+ -- We do not have Signal 0 in reality. We just use this value to
+ -- identify not existing signals (see s-intnam.ads). Therefore, Signal 0
+ -- should not be used in all signal related operations hence mark it as
+ -- reserved.
Reserve (0) := True;
end Initialize;
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