From f378ebf14df0952eae870c9865bab8326aa8f137 Mon Sep 17 00:00:00 2001 From: Dan Albert Date: Wed, 17 Jun 2015 11:09:54 -0700 Subject: Delete old versions of GCC. Change-Id: I710f125d905290e1024cbd67f48299861790c66c --- gcc-4.4.0/gcc/ada/s-intman-posix.adb | 293 ----------------------------------- 1 file changed, 293 deletions(-) delete mode 100644 gcc-4.4.0/gcc/ada/s-intman-posix.adb (limited to 'gcc-4.4.0/gcc/ada/s-intman-posix.adb') diff --git a/gcc-4.4.0/gcc/ada/s-intman-posix.adb b/gcc-4.4.0/gcc/ada/s-intman-posix.adb deleted file mode 100644 index cbe0ea877..000000000 --- a/gcc-4.4.0/gcc/ada/s-intman-posix.adb +++ /dev/null @@ -1,293 +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) 1992-2009, 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 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 -- --- . -- --- -- --- GNARL was developed by the GNARL team at Florida State University. -- --- Extensive contributions were provided by Ada Core Technologies, Inc. -- --- -- ------------------------------------------------------------------------------- - --- This is the POSIX threads 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. - --- 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 System.Task_Primitives; - -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 -- - ----------------------- - - 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) - - procedure Notify_Exception - (signo : Signal; - siginfo : System.Address; - ucontext : System.Address); - -- 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; - siginfo : System.Address; - ucontext : System.Address) - is - pragma Unreferenced (siginfo); - - 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); - - -- Perform the necessary context adjustments prior to a raise - -- from a signal handler. - - Adjust_Context_For_Raise (signo, ucontext); - - -- 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 -- - ---------------- - - Initialized : Boolean := False; - - procedure Initialize is - act : aliased struct_sigaction; - old_act : aliased struct_sigaction; - Result : System.OS_Interface.int; - - Use_Alternate_Stack : constant Boolean := - System.Task_Primitives.Alternate_Stack_Size /= 0; - -- Whether to use an alternate signal stack for stack overflows - - begin - if Initialized then - return; - end if; - - Initialized := True; - - -- 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; - - -- Setting SA_SIGINFO asks the kernel to pass more than just the signal - -- number argument to the handler when it is called. The set of extra - -- parameters includes a pointer to the interrupted context, which the - -- ZCX propagation scheme needs. - - -- Most man pages for sigaction mention that sa_sigaction should be set - -- instead of sa_handler when SA_SIGINFO is on. In practice, the two - -- fields are actually union'ed and located at the same offset. - - -- 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); - - -- Add signals that map to Ada exceptions to the mask - - for J in Exception_Interrupts'Range loop - if State (Exception_Interrupts (J)) /= Default then - Result := - sigaddset (Signal_Mask'Access, Signal (Exception_Interrupts (J))); - pragma Assert (Result = 0); - end if; - end loop; - - act.sa_mask := Signal_Mask; - - pragma Assert (Keep_Unmasked = (Interrupt_ID'Range => False)); - pragma Assert (Reserve = (Interrupt_ID'Range => False)); - - -- Process state of exception signals - - 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 - act.sa_flags := SA_SIGINFO; - - if Use_Alternate_Stack - and then Exception_Interrupts (J) = SIGSEGV - then - act.sa_flags := act.sa_flags + SA_ONSTACK; - end if; - - 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 is 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 really have Signal 0. We just use this value to identify - -- non-existent signals (see s-intnam.ads). Therefore, Signal should not - -- be used in all signal related operations hence mark it as reserved. - - Reserve (0) := True; - end Initialize; - -end System.Interrupt_Management; -- cgit v1.2.3