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Diffstat (limited to 'gcc-4.2.1/gcc/ada/s-intman-solaris.adb')
| -rw-r--r-- | gcc-4.2.1/gcc/ada/s-intman-solaris.adb | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/gcc-4.2.1/gcc/ada/s-intman-solaris.adb b/gcc-4.2.1/gcc/ada/s-intman-solaris.adb deleted file mode 100644 index 8c4a6c17c..000000000 --- a/gcc-4.2.1/gcc/ada/s-intman-solaris.adb +++ /dev/null @@ -1,250 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT 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 -- --- -- --- Copyright (C) 1992-2006 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- -- --- 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. -- --- -- --- 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. -- --- 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. - --- Be on the lookout for special signals that --- may be used by the thread library. - -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"); - - function State (Int : Interrupt_ID) return Character; - pragma Import (C, State, "__gnat_get_interrupt_state"); - -- Get interrupt state. Defined in init.c - -- The input argument is the interrupt number, - -- and the result is one of the following: - - User : constant Character := 'u'; - Runtime : constant Character := 'r'; - Default : constant Character := 's'; - -- 'n' this interrupt not set by any Interrupt_State pragma - -- 'u' Interrupt_State pragma set state to User - -- 'r' Interrupt_State pragma set state to Runtime - -- 's' Interrupt_State pragma set state to System (use "default" - -- system handler) - - ---------------------- - -- 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. - - procedure Notify_Exception - (signo : Signal; - info : access siginfo_t; - context : access ucontext_t); - - ---------------------- - -- Notify_Exception -- - ---------------------- - - procedure Notify_Exception - (signo : Signal; - info : access siginfo_t; - context : access ucontext_t) - is - pragma Unreferenced (context); - begin - -- 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 Storage_Error; - - when others => - pragma Assert (False); - null; - end case; - end Notify_Exception; - - ---------------- - -- Initialize -- - ---------------- - - Initialized : Boolean := False; - - procedure Initialize is - act : aliased struct_sigaction; - old_act : aliased struct_sigaction; - mask : aliased sigset_t; - Result : Interfaces.C.int; - - begin - if Initialized then - return; - end if; - - Initialized := True; - - -- Need to call pthread_init very early because it is doing signal - -- initializations. - - pthread_init; - - -- Change this if you want to use another signal for task abort. - -- SIGTERM might be a good one. - - Abort_Task_Interrupt := SIGABRT; - - act.sa_handler := Notify_Exception'Address; - - -- 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. - - -- In that case, this field should be changed back to 0. ??? (Dong-Ik) - - act.sa_flags := 16; - - 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. - - act.sa_mask := mask; - - pragma Assert (Keep_Unmasked = (Interrupt_ID'Range => False)); - pragma Assert (Reserve = (Interrupt_ID'Range => False)); - - for J in Exception_Interrupts'Range loop - if State (Exception_Interrupts (J)) /= User then - Keep_Unmasked (Exception_Interrupts (J)) := True; - Reserve (Exception_Interrupts (J)) := True; - - if State (Exception_Interrupts (J)) /= Default then - Result := - sigaction - (Signal (Exception_Interrupts (J)), act'Unchecked_Access, - old_act'Unchecked_Access); - pragma Assert (Result = 0); - end if; - end if; - end loop; - - if State (Abort_Task_Interrupt) /= User then - Keep_Unmasked (Abort_Task_Interrupt) := True; - Reserve (Abort_Task_Interrupt) := True; - end if; - - -- Set SIGINT to unmasked state as long as it's - -- not in "User" state. Check for Unreserve_All_Interrupts last - - if State (SIGINT) /= User then - Keep_Unmasked (SIGINT) := True; - Reserve (SIGINT) := True; - end if; - - -- Check all signals for state that requires keeping them - -- unmasked and reserved - - for J in Interrupt_ID'Range loop - if State (J) = Default or else State (J) = Runtime then - Keep_Unmasked (J) := True; - Reserve (J) := True; - end if; - end loop; - - -- Add the set of signals that must always be unmasked for this target - - for J in Unmasked'Range loop - Keep_Unmasked (Interrupt_ID (Unmasked (J))) := True; - Reserve (Interrupt_ID (Unmasked (J))) := True; - end loop; - - -- Add target-specific reserved signals - - for J in Reserved'Range loop - Reserve (Interrupt_ID (Reserved (J))) := True; - end loop; - - -- Process pragma Unreserve_All_Interrupts. This overrides any - -- settings due to pragma Interrupt_State: - - if Unreserve_All_Interrupts /= 0 then - Keep_Unmasked (SIGINT) := False; - 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. - - Reserve (0) := True; - end Initialize; - -end System.Interrupt_Management; |