X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=gcc%2Fada%2F7sintman.adb;fp=gcc%2Fada%2F7sintman.adb;h=0000000000000000000000000000000000000000;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=cbe9587a5cf973e41a90111e0f38ab2b08a5ea72;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gcc/ada/7sintman.adb b/gcc/ada/7sintman.adb deleted file mode 100644 index cbe9587a..00000000 --- a/gcc/ada/7sintman.adb +++ /dev/null @@ -1,242 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS -- --- -- --- S Y S T E M . I N T E R R U P T _ M A N A G E M E N T -- --- -- --- B o d y -- --- -- --- $Revision: 1.2 $ --- -- --- Copyright (C) 1991-2001, Florida State University -- --- -- --- 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- -- --- 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, 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. -- --- -- --- GNARL was developed by the GNARL team at Florida State University. It is -- --- now maintained by Ada Core Technologies Inc. in cooperation with Florida -- --- State University (http://www.gnat.com). -- --- -- ------------------------------------------------------------------------------- - --- This is the default version of this package - --- This is a Sun OS (FSU THREADS) version of this package - --- PLEASE DO NOT add any dependences on other packages. ??? why not ??? --- This package is designed to work with or without tasking support. - --- See the other warnings in the package specification before making --- any modifications to this file. - --- 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. Be on --- the lookout for special signals that may be used by the thread library. - --- Since this is a multi target file, the signal <-> exception mapping --- is simple minded. If you need a more precise and target specific --- signal handling, create a new s-intman.adb that will fit your needs. - --- This file assumes that: --- --- SIGFPE, SIGILL, SIGSEGV and SIGBUS exist. They are mapped as follows: --- SIGPFE => Constraint_Error --- SIGILL => Program_Error --- SIGSEGV => Storage_Error --- SIGBUS => Storage_Error --- --- SIGINT exists and will be kept unmasked unless the pragma --- Unreserve_All_Interrupts is specified anywhere in the application. --- --- System.OS_Interface contains the following: --- SIGADAABORT: the signal that will be used to abort tasks. --- Unmasked: the OS specific set of signals that should be unmasked in --- all the threads. SIGADAABORT is unmasked by --- default --- Reserved: the OS specific set of signals that are reserved. - -with Interfaces.C; --- used for int and other types - -with System.OS_Interface; --- used for various Constants, Signal and types - -package body System.Interrupt_Management is - - use Interfaces.C; - use System.OS_Interface; - - type Interrupt_List is array (Interrupt_ID range <>) of Interrupt_ID; - Exception_Interrupts : constant Interrupt_List := - (SIGFPE, SIGILL, SIGSEGV, SIGBUS); - - Unreserve_All_Interrupts : Interfaces.C.int; - pragma Import - (C, Unreserve_All_Interrupts, "__gl_unreserve_all_interrupts"); - - ----------------------- - -- Local Subprograms -- - ----------------------- - - procedure Notify_Exception (signo : Signal); - -- 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. - - ---------------------- - -- Notify_Exception -- - ---------------------- - - Signal_Mask : aliased sigset_t; - -- The set of signals handled by Notify_Exception - - procedure Notify_Exception (signo : Signal) is - Result : Interfaces.C.int; - - begin - -- With the __builtin_longjmp, the signal mask is not restored, so we - -- need to restore it explicitly. - - Result := pthread_sigmask (SIG_UNBLOCK, Signal_Mask'Access, null); - pragma Assert (Result = 0); - - -- 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 => - raise Constraint_Error; - when SIGILL => - raise Program_Error; - when SIGSEGV => - raise Storage_Error; - when SIGBUS => - raise Storage_Error; - when others => - null; - end case; - end Notify_Exception; - - --------------------------- - -- Initialize_Interrupts -- - --------------------------- - - -- Nothing needs to be done on this platform. - - procedure Initialize_Interrupts is - begin - null; - end Initialize_Interrupts; - -------------------------- --- Package Elaboration -- -------------------------- - -begin - declare - act : aliased struct_sigaction; - old_act : aliased struct_sigaction; - Result : Interfaces.C.int; - - begin - -- Need to call pthread_init very early because it is doing signal - -- initializations. - - pthread_init; - - Abort_Task_Interrupt := SIGADAABORT; - - act.sa_handler := Notify_Exception'Address; - - act.sa_flags := 0; - - -- On some targets, we set sa_flags to SA_NODEFER so that during the - -- handler execution we do not change the Signal_Mask to be masked for - -- the Signal. - - -- This is a temporary fix to the problem that the Signal_Mask is - -- not restored after the exception (longjmp) from the handler. - -- The right fix should be made in sigsetjmp so that we save - -- the Signal_Set and restore it after a longjmp. - - -- Since SA_NODEFER is obsolete, instead we reset explicitly - -- the mask in the exception handler. - - Result := sigemptyset (Signal_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. - - act.sa_mask := Signal_Mask; - - Keep_Unmasked (Abort_Task_Interrupt) := True; - Keep_Unmasked (SIGXCPU) := True; - Keep_Unmasked (SIGFPE) := True; - Result := - sigaction - (Signal (SIGFPE), act'Unchecked_Access, - old_act'Unchecked_Access); - pragma Assert (Result = 0); - - -- By keeping SIGINT unmasked, allow the user to do a Ctrl-C, but at - -- the same time, disable the ability of handling this signal via - -- package Ada.Interrupts. - - -- The pragma Unreserve_All_Interrupts let the user the ability to - -- change this behavior. - - if Unreserve_All_Interrupts = 0 then - Keep_Unmasked (SIGINT) := True; - end if; - - for J in - Exception_Interrupts'First + 1 .. Exception_Interrupts'Last - loop - Keep_Unmasked (Exception_Interrupts (J)) := True; - - if Unreserve_All_Interrupts = 0 then - Result := - sigaction - (Signal (Exception_Interrupts (J)), act'Unchecked_Access, - old_act'Unchecked_Access); - pragma Assert (Result = 0); - end if; - end loop; - - for J in Unmasked'Range loop - Keep_Unmasked (Interrupt_ID (Unmasked (J))) := True; - end loop; - - Reserve := Keep_Unmasked or Keep_Masked; - - for J in Reserved'Range loop - Reserve (Interrupt_ID (Reserved (J))) := True; - end loop; - - -- We do not have Signal 0 in reality. We just use this value - -- to identify non-existent 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; -end System.Interrupt_Management;