From 16707e90f935452e4ce65e04e0a2047b6b083eb3 Mon Sep 17 00:00:00 2001 From: Arnaud Charlet Date: Mon, 11 Sep 2017 10:05:43 +0200 Subject: [PATCH] New files, to ease sync between AdaCore and FSF. From-SVN: r251958 --- gcc/ada/libgnarl/a-intnam-lynxos.ads | 166 ++++++++ gcc/ada/libgnarl/s-intman-lynxos.adb | 292 ++++++++++++++ gcc/ada/libgnarl/s-osinte-lynxos178.adb | 180 +++++++++ gcc/ada/libgnarl/s-osinte-lynxos178e.ads | 627 +++++++++++++++++++++++++++++++ gcc/ada/libgnarl/s-taspri-lynxos.ads | 118 ++++++ 5 files changed, 1383 insertions(+) create mode 100644 gcc/ada/libgnarl/a-intnam-lynxos.ads create mode 100644 gcc/ada/libgnarl/s-intman-lynxos.adb create mode 100644 gcc/ada/libgnarl/s-osinte-lynxos178.adb create mode 100644 gcc/ada/libgnarl/s-osinte-lynxos178e.ads create mode 100644 gcc/ada/libgnarl/s-taspri-lynxos.ads diff --git a/gcc/ada/libgnarl/a-intnam-lynxos.ads b/gcc/ada/libgnarl/a-intnam-lynxos.ads new file mode 100644 index 0000000..813a096 --- /dev/null +++ b/gcc/ada/libgnarl/a-intnam-lynxos.ads @@ -0,0 +1,166 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- +-- -- +-- A D A . I N T E R R U P T S . N A M E S -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1991-2017, 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 a LynxOS version of this package + +-- The following signals are reserved by the run time: + +-- SIGFPE, SIGILL, SIGSEGV, SIGBUS, SIGTRAP, SIGABRT, SIGINT, +-- SIGWAITING, SIGLWP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF, SIGSTOP, SIGKILL + +-- The pragma Unreserve_All_Interrupts affects the following signal(s): + +-- SIGINT: made available for Ada handler + +with System.OS_Interface; + +package Ada.Interrupts.Names is + + -- All identifiers in this unit are implementation defined + + pragma Implementation_Defined; + + -- Beware that the mapping of names to signals may be many-to-one. There + -- may be aliases. + + SIGHUP : constant Interrupt_ID := + System.OS_Interface.SIGHUP; -- hangup + + SIGINT : constant Interrupt_ID := + System.OS_Interface.SIGINT; -- interrupt (rubout) + + SIGQUIT : constant Interrupt_ID := + System.OS_Interface.SIGQUIT; -- quit (ASCD FS) + + SIGILL : constant Interrupt_ID := + System.OS_Interface.SIGILL; -- illegal instruction (not reset) + + SIGTRAP : constant Interrupt_ID := + System.OS_Interface.SIGTRAP; -- trace trap (not reset) + + SIGBRK : constant Interrupt_ID := + System.OS_Interface.SIGBRK; -- break + + SIGIOT : constant Interrupt_ID := + System.OS_Interface.SIGIOT; -- IOT instruction + + SIGABRT : constant Interrupt_ID := -- used by abort, + System.OS_Interface.SIGABRT; -- replace SIGIOT in the future + + SIGCORE : constant Interrupt_ID := + System.OS_Interface.SIGCORE; -- kill with core dump + + SIGEMT : constant Interrupt_ID := + System.OS_Interface.SIGEMT; -- EMT instruction + + SIGFPE : constant Interrupt_ID := + System.OS_Interface.SIGFPE; -- floating point exception + + SIGKILL : constant Interrupt_ID := + System.OS_Interface.SIGKILL; -- kill (cannot be caught or ignored) + + SIGBUS : constant Interrupt_ID := + System.OS_Interface.SIGBUS; -- bus error + + SIGSEGV : constant Interrupt_ID := + System.OS_Interface.SIGSEGV; -- segmentation violation + + SIGSYS : constant Interrupt_ID := + System.OS_Interface.SIGSYS; -- bad argument to system call + + SIGPIPE : constant Interrupt_ID := -- write on a pipe with + System.OS_Interface.SIGPIPE; -- no one to read it + + SIGALRM : constant Interrupt_ID := + System.OS_Interface.SIGALRM; -- alarm clock + + SIGTERM : constant Interrupt_ID := + System.OS_Interface.SIGTERM; -- software termination signal from kill + + SIGURG : constant Interrupt_ID := + System.OS_Interface.SIGURG; -- urgent condition on IO channel + + SIGSTOP : constant Interrupt_ID := + System.OS_Interface.SIGSTOP; -- stop (cannot be caught or ignored) + + SIGTSTP : constant Interrupt_ID := + System.OS_Interface.SIGTSTP; -- user stop requested from tty + + SIGCONT : constant Interrupt_ID := + System.OS_Interface.SIGCONT; -- stopped process has been continued + + SIGCLD : constant Interrupt_ID := + System.OS_Interface.SIGCLD; -- child status change + + SIGCHLD : constant Interrupt_ID := + System.OS_Interface.SIGCHLD; -- 4.3BSD's/POSIX name for SIGCLD + + SIGTTIN : constant Interrupt_ID := + System.OS_Interface.SIGTTIN; -- background tty read attempted + + SIGTTOU : constant Interrupt_ID := + System.OS_Interface.SIGTTOU; -- background tty write attempted + + SIGPOLL : constant Interrupt_ID := + System.OS_Interface.SIGPOLL; -- pollable event occurred + + SIGIO : constant Interrupt_ID := -- input/output possible, + System.OS_Interface.SIGIO; -- SIGPOLL alias (Solaris) + + SIGXCPU : constant Interrupt_ID := + System.OS_Interface.SIGXCPU; -- CPU time limit exceeded + + SIGXFSZ : constant Interrupt_ID := + System.OS_Interface.SIGXFSZ; -- filesize limit exceeded + + SIGVTALRM : constant Interrupt_ID := + System.OS_Interface.SIGVTALRM; -- virtual timer expired + + SIGPROF : constant Interrupt_ID := + System.OS_Interface.SIGPROF; -- profiling timer expired + + SIGWINCH : constant Interrupt_ID := + System.OS_Interface.SIGWINCH; -- window size change + + SIGLOST : constant Interrupt_ID := + System.OS_Interface.SIGLOST; -- SUN 4.1 compatibility + + SIGUSR1 : constant Interrupt_ID := + System.OS_Interface.SIGUSR1; -- user defined signal 1 + + SIGUSR2 : constant Interrupt_ID := + System.OS_Interface.SIGUSR2; -- user defined signal 2 + + SIGPRIO : constant Interrupt_ID := + System.OS_Interface.SIGPRIO; + -- sent to a process with its priority + -- or group is changed +end Ada.Interrupts.Names; diff --git a/gcc/ada/libgnarl/s-intman-lynxos.adb b/gcc/ada/libgnarl/s-intman-lynxos.adb new file mode 100644 index 0000000..9048e49 --- /dev/null +++ b/gcc/ada/libgnarl/s-intman-lynxos.adb @@ -0,0 +1,292 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 1992-2017, 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 LynxOS 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 + -- This file is identical to s-intman-posix.adb, except that we + -- don't set the SA_SIGINFO flag in act.sa_flags, because + -- LynxOS does not support that. If SA_SIGINFO is set, then + -- sigaction fails, returning -1. + act.sa_flags := 0; + + 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; diff --git a/gcc/ada/libgnarl/s-osinte-lynxos178.adb b/gcc/ada/libgnarl/s-osinte-lynxos178.adb new file mode 100644 index 0000000..50e9353 --- /dev/null +++ b/gcc/ada/libgnarl/s-osinte-lynxos178.adb @@ -0,0 +1,180 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- +-- -- +-- S Y S T E M . O S _ I N T E R F A C E -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 2001-2017, AdaCore -- +-- -- +-- 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 -- +-- . -- +-- -- +-- GNARL was developed by the GNARL team at Florida State University. -- +-- Extensive contributions were provided by Ada Core Technologies, Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- Version of System.OS_Interface for LynxOS-178 (POSIX Threads) + +pragma Polling (Off); +-- Turn off polling, we do not want ATC polling to take place during tasking +-- operations. It may cause infinite loops and other problems. + +package body System.OS_Interface is + + use Interfaces.C; + + ------------------ + -- Current_CPU -- + ------------------ + + function Current_CPU return Multiprocessors.CPU is + begin + -- No multiprocessor support, always return the first CPU Id + + return Multiprocessors.CPU'First; + end Current_CPU; + + -------------------- + -- Get_Affinity -- + -------------------- + + function Get_Affinity (Id : Thread_Id) return Multiprocessors.CPU_Range is + pragma Unreferenced (Id); + + begin + -- No multiprocessor support, always return Not_A_Specific_CPU + + return Multiprocessors.Not_A_Specific_CPU; + end Get_Affinity; + + --------------- + -- Get_CPU -- + --------------- + + function Get_CPU (Id : Thread_Id) return Multiprocessors.CPU is + pragma Unreferenced (Id); + + begin + -- No multiprocessor support, always return the first CPU Id + + return Multiprocessors.CPU'First; + end Get_CPU; + + ------------------- + -- Get_Page_Size -- + ------------------- + + SC_PAGESIZE : constant := 17; + -- C macro to get pagesize value from sysconf + + function sysconf (name : int) return long; + pragma Import (C, sysconf, "sysconf"); + + function Get_Page_Size return int is + begin + return int (sysconf (SC_PAGESIZE)); + end Get_Page_Size; + + ----------------- + -- To_Duration -- + ----------------- + + function To_Duration (TS : timespec) return Duration is + begin + return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9; + end To_Duration; + + ------------------------ + -- To_Target_Priority -- + ------------------------ + + function To_Target_Priority + (Prio : System.Any_Priority) return Interfaces.C.int + is + begin + return Interfaces.C.int (Prio); + end To_Target_Priority; + + ----------------- + -- To_Timespec -- + ----------------- + + function To_Timespec (D : Duration) return timespec is + S : time_t; + F : Duration; + + begin + S := time_t (Long_Long_Integer (D)); + F := D - Duration (S); + + -- If F is negative due to a round-up, adjust for positive F value + + if F < 0.0 then + S := S - 1; + F := F + 1.0; + end if; + + return timespec'(tv_sec => S, + tv_nsec => long (Long_Long_Integer (F * 10#1#E9))); + end To_Timespec; + + ------------- + -- sigwait -- + ------------- + + function sigwait + (set : access sigset_t; + sig : access Signal) + return int + is + function sigwaitinfo + (set : access sigset_t; + info : System.Address) return Signal; + pragma Import (C, sigwaitinfo, "sigwaitinfo"); + + begin + sig.all := sigwaitinfo (set, Null_Address); + + if sig.all = -1 then + return errno; + end if; + + return 0; + end sigwait; + + -------------------- + -- Get_Stack_Base -- + -------------------- + + function Get_Stack_Base (thread : pthread_t) return Address is + pragma Warnings (Off, thread); + begin + return Null_Address; + end Get_Stack_Base; + + ------------------ + -- pthread_init -- + ------------------ + + procedure pthread_init is + begin + null; + end pthread_init; + +end System.OS_Interface; diff --git a/gcc/ada/libgnarl/s-osinte-lynxos178e.ads b/gcc/ada/libgnarl/s-osinte-lynxos178e.ads new file mode 100644 index 0000000..5eda072 --- /dev/null +++ b/gcc/ada/libgnarl/s-osinte-lynxos178e.ads @@ -0,0 +1,627 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- +-- -- +-- S Y S T E M . O S _ I N T E R F A C E -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1991-1994, Florida State University -- +-- Copyright (C) 1995-2017, 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 -- +-- . -- +-- -- +-- GNARL was developed by the GNARL team at Florida State University. -- +-- Extensive contributions were provided by Ada Core Technologies, Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This is a LynxOS-178 Elf (POSIX-8 Threads) version of this package + +-- This package encapsulates all direct interfaces to OS services that are +-- needed by the tasking run-time (libgnarl). + +-- PLEASE DO NOT add any with-clauses to this package or remove the pragma +-- Preelaborate. This package is designed to be a bottom-level (leaf) package. + +with Ada.Unchecked_Conversion; + +with Interfaces.C; + +with System.Multiprocessors; + +package System.OS_Interface is + pragma Preelaborate; + + pragma Linker_Options ("-mthreads"); + -- Selects the POSIX 1.c runtime, rather than the non-threading runtime or + -- the deprecated legacy threads library. + + subtype int is Interfaces.C.int; + subtype short is Interfaces.C.short; + subtype long is Interfaces.C.long; + subtype unsigned is Interfaces.C.unsigned; + subtype unsigned_short is Interfaces.C.unsigned_short; + subtype unsigned_long is Interfaces.C.unsigned_long; + subtype unsigned_char is Interfaces.C.unsigned_char; + subtype plain_char is Interfaces.C.plain_char; + subtype size_t is Interfaces.C.size_t; + subtype int64 is Interfaces.Integer_64; + + ----------- + -- Errno -- + ----------- + + function errno return int; + pragma Import (C, errno, "__get_errno"); + + EAGAIN : constant := 11; + EINTR : constant := 4; + EINVAL : constant := 22; + ENOMEM : constant := 12; + ETIMEDOUT : constant := 60; + -- Error codes + + ------------- + -- Signals -- + ------------- + + Max_Interrupt : constant := 63; + -- Max_Interrupt is the number of OS signals, as defined in: + -- + -- /usr/include/sys/signal.h + -- + -- The lowest numbered signal is 1, but 0 is a valid argument to some + -- library functions, e.g. kill(2). However, 0 is not just another signal: + -- For instance 'I in Signal' and similar should be used with caution. + + type Signal is new int range 0 .. Max_Interrupt; + for Signal'Size use int'Size; + + SIGHUP : constant := 1; -- hangup + SIGINT : constant := 2; -- interrupt (rubout) + SIGQUIT : constant := 3; -- quit (ASCD FS) + SIGILL : constant := 4; -- illegal instruction (not reset) + SIGTRAP : constant := 5; -- trace trap (not reset) + SIGBRK : constant := 6; -- break + SIGIOT : constant := 6; -- IOT instruction + SIGABRT : constant := 6; -- used by abort, replace SIGIOT in future + SIGCORE : constant := 7; -- kill with core dump + SIGEMT : constant := 7; -- EMT instruction + SIGFPE : constant := 8; -- floating point exception + SIGKILL : constant := 9; -- kill (cannot be caught or ignored) + SIGBUS : constant := 10; -- bus error + SIGSEGV : constant := 11; -- segmentation violation + SIGSYS : constant := 12; -- bad argument to system call + SIGPIPE : constant := 13; -- write on a pipe with no one to read it + SIGALRM : constant := 14; -- alarm clock + SIGTERM : constant := 15; -- software termination signal from kill + SIGURG : constant := 16; -- urgent condition on IO channel + SIGSTOP : constant := 17; -- stop (cannot be caught or ignored) + SIGTSTP : constant := 18; -- user stop requested from tty + SIGCONT : constant := 19; -- stopped process has been continued + SIGCLD : constant := 20; -- alias for SIGCHLD + SIGCHLD : constant := 20; -- child status change + SIGTTIN : constant := 21; -- background tty read attempted + SIGTTOU : constant := 22; -- background tty write attempted + SIGIO : constant := 23; -- I/O possible (Solaris SIGPOLL alias) + SIGPOLL : constant := 23; -- pollable event occurred + SIGTHREADKILL : constant := 24; -- Reserved by LynxOS runtime + SIGXCPU : constant := 24; -- CPU time limit exceeded + SIGXFSZ : constant := 25; -- filesize limit exceeded + SIGVTALRM : constant := 26; -- virtual timer expired + SIGPROF : constant := 27; -- profiling timer expired + SIGWINCH : constant := 28; -- window size change + SIGLOST : constant := 29; -- SUN 4.1 compatibility + SIGUSR1 : constant := 30; -- user defined signal 1 + SIGUSR2 : constant := 31; -- user defined signal 2 + + SIGPRIO : constant := 32; + -- Sent to a process with its priority or group is changed + + SIGADAABORT : constant := SIGABRT; + -- Change this if you want to use another signal for task abort. SIGTERM + -- might be a good one. + + type Signal_Set is array (Natural range <>) of Signal; + + Unmasked : constant Signal_Set := + (SIGTRAP, SIGTTIN, SIGTTOU, SIGTSTP, SIGPROF, SIGTHREADKILL); + Reserved : constant Signal_Set := (SIGABRT, SIGKILL, SIGSTOP, SIGPRIO); + + type sigset_t is private; + + function sigaddset (set : access sigset_t; sig : Signal) return int; + pragma Import (C, sigaddset, "sigaddset"); + + function sigdelset (set : access sigset_t; sig : Signal) return int; + pragma Import (C, sigdelset, "sigdelset"); + + function sigfillset (set : access sigset_t) return int; + pragma Import (C, sigfillset, "sigfillset"); + + function sigismember (set : access sigset_t; sig : Signal) return int; + pragma Import (C, sigismember, "sigismember"); + + function sigemptyset (set : access sigset_t) return int; + pragma Import (C, sigemptyset, "sigemptyset"); + + type struct_sigaction is record + sa_handler : System.Address; + sa_mask : sigset_t; + sa_flags : int; + end record; + pragma Convention (C, struct_sigaction); + type struct_sigaction_ptr is access all struct_sigaction; + + SA_SIGINFO : constant := 16#80#; + + SA_ONSTACK : constant := 16#00#; + -- SA_ONSTACK is not defined on LynxOS, but it is referred to in the POSIX + -- implementation of System.Interrupt_Management. Therefore we define a + -- dummy value of zero here so that setting this flag is a nop. + + SIG_BLOCK : constant := 0; + SIG_UNBLOCK : constant := 1; + SIG_SETMASK : constant := 2; + + SIG_DFL : constant := 0; + SIG_IGN : constant := 1; + + function sigaction + (sig : Signal; + act : struct_sigaction_ptr; + oact : struct_sigaction_ptr) return int; + pragma Import (C, sigaction, "sigaction"); + + ---------- + -- Time -- + ---------- + + Time_Slice_Supported : constant Boolean := True; + -- Indicates whether time slicing is supported + + type timespec is private; + + type clockid_t is new int; + + function clock_gettime + (clock_id : clockid_t; + tp : access timespec) return int; + pragma Import (C, clock_gettime, "clock_gettime"); + + function clock_getres + (clock_id : clockid_t; + res : access timespec) return int; + pragma Import (C, clock_getres, "clock_getres"); + + function To_Duration (TS : timespec) return Duration; + pragma Inline (To_Duration); + + function To_Timespec (D : Duration) return timespec; + pragma Inline (To_Timespec); + + type struct_timezone is record + tz_minuteswest : int; + tz_dsttime : int; + end record; + pragma Convention (C, struct_timezone); + type struct_timezone_ptr is access all struct_timezone; + + type struct_timeval is private; + + ------------------------- + -- Priority Scheduling -- + ------------------------- + + SCHED_RR : constant := 16#100_000#; + SCHED_FIFO : constant := 16#200_000#; + SCHED_OTHER : constant := 16#400_000#; + + function To_Target_Priority + (Prio : System.Any_Priority) return Interfaces.C.int; + -- Maps System.Any_Priority to a POSIX priority + + ------------- + -- Process -- + ------------- + + type pid_t is private; + + function kill (pid : pid_t; sig : Signal) return int; + pragma Import (C, kill, "kill"); + + function getpid return pid_t; + pragma Import (C, getpid, "getpid"); + + --------- + -- LWP -- + --------- + + type pthread_t is private; + + function lwp_self return pthread_t; + pragma Import (C, lwp_self, "pthread_self"); + + ------------- + -- Threads -- + ------------- + + type Thread_Body is access + function (arg : System.Address) return System.Address; + pragma Convention (C, Thread_Body); + + function Thread_Body_Access is new + Ada.Unchecked_Conversion (System.Address, Thread_Body); + + subtype Thread_Id is pthread_t; + + type pthread_mutex_t is limited private; + type pthread_cond_t is limited private; + type pthread_attr_t is limited private; + type pthread_mutexattr_t is limited private; + type pthread_condattr_t is limited private; + type pthread_key_t is private; + + PTHREAD_CREATE_DETACHED : constant := 1; + PTHREAD_CREATE_JOINABLE : constant := 0; + + PTHREAD_SCOPE_PROCESS : constant := 0; -- not supported by LynxOS178 + PTHREAD_SCOPE_SYSTEM : constant := 1; + + -- Read/Write lock not supported on LynxOS. To add support both types + -- pthread_rwlock_t and pthread_rwlockattr_t must properly be defined + -- with the associated routines pthread_rwlock_[init/destroy] and + -- pthread_rwlock_[rdlock/wrlock/unlock]. + + subtype pthread_rwlock_t is pthread_mutex_t; + subtype pthread_rwlockattr_t is pthread_mutexattr_t; + + ----------- + -- Stack -- + ----------- + + type stack_t is record + ss_sp : System.Address; + ss_flags : int; + ss_size : size_t; + end record; + pragma Convention (C, stack_t); + + function sigaltstack + (ss : not null access stack_t; + oss : access stack_t) return int; + pragma Import (C, sigaltstack, "sigaltstack"); + -- Neither stack_t nor sigaltstack are available on LynxOS-178 + + Alternate_Stack : aliased System.Address; + -- This is a dummy definition, never used (Alternate_Stack_Size is 0) + + Alternate_Stack_Size : constant := 0; + -- No alternate signal stack is used on this platform + + Stack_Base_Available : constant Boolean := False; + -- Indicates whether the stack base is available on this target + + function Get_Stack_Base (thread : pthread_t) return Address; + pragma Inline (Get_Stack_Base); + -- Returns the stack base of the specified thread. Only call this function + -- when Stack_Base_Available is True. + + function Get_Page_Size return int; + -- Returns the size of a page in bytes + + PROT_NONE : constant := 1; + PROT_READ : constant := 2; + PROT_WRITE : constant := 4; + PROT_EXEC : constant := 8; + PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC; + + PROT_ON : constant := PROT_READ; + PROT_OFF : constant := PROT_ALL; + + function mprotect (addr : Address; len : size_t; prot : int) return int; + pragma Import (C, mprotect); + + --------------------------------------- + -- Nonstandard Thread Initialization -- + --------------------------------------- + + procedure pthread_init; + -- This is a dummy procedure to share some GNULLI files + + ------------------------- + -- POSIX.1c Section 3 -- + ------------------------- + function sigwait + (set : access sigset_t; + sig : access Signal) return int; + pragma Inline (sigwait); + -- LynxOS has non standard sigwait + + function pthread_kill + (thread : pthread_t; + sig : Signal) return int; + pragma Import (C, pthread_kill, "pthread_kill"); + + function pthread_sigmask + (how : int; + set : access sigset_t; + oset : access sigset_t) return int; + pragma Import (C, pthread_sigmask, "pthread_sigmask"); + + ---------------------------- + -- POSIX.1c Section 11 -- + ---------------------------- + + function pthread_mutexattr_init + (attr : access pthread_mutexattr_t) return int; + pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init"); + + function pthread_mutexattr_destroy + (attr : access pthread_mutexattr_t) return int; + pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy"); + + function pthread_mutex_init + (mutex : access pthread_mutex_t; + attr : access pthread_mutexattr_t) return int; + pragma Import (C, pthread_mutex_init, "pthread_mutex_init"); + + function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int; + pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy"); + + function pthread_mutex_lock (mutex : access pthread_mutex_t) return int; + pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock"); + + function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int; + pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock"); + + function pthread_condattr_init + (attr : access pthread_condattr_t) return int; + pragma Import (C, pthread_condattr_init, "pthread_condattr_init"); + + function pthread_condattr_destroy + (attr : access pthread_condattr_t) return int; + pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy"); + + function pthread_cond_init + (cond : access pthread_cond_t; + attr : access pthread_condattr_t) return int; + pragma Import (C, pthread_cond_init, "pthread_cond_init"); + + function pthread_cond_destroy (cond : access pthread_cond_t) return int; + pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy"); + + function pthread_cond_signal (cond : access pthread_cond_t) return int; + pragma Import (C, pthread_cond_signal, "pthread_cond_signal"); + + function pthread_cond_wait + (cond : access pthread_cond_t; + mutex : access pthread_mutex_t) return int; + pragma Import (C, pthread_cond_wait, "pthread_cond_wait"); + + function pthread_cond_timedwait + (cond : access pthread_cond_t; + mutex : access pthread_mutex_t; + abstime : access timespec) return int; + pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait"); + + Relative_Timed_Wait : constant Boolean := False; + -- pthread_cond_timedwait requires an absolute delay time + + -------------------------- + -- POSIX.1c Section 13 -- + -------------------------- + + PTHREAD_PRIO_NONE : constant := 0; + PTHREAD_PRIO_INHERIT : constant := 1; + PTHREAD_PRIO_PROTECT : constant := 2; + + function pthread_mutexattr_setprotocol + (attr : access pthread_mutexattr_t; + protocol : int) return int; + pragma Import (C, pthread_mutexattr_setprotocol); + + function pthread_mutexattr_setprioceiling + (attr : access pthread_mutexattr_t; + prioceiling : int) return int; + pragma Import (C, pthread_mutexattr_setprioceiling); + + type struct_sched_param is record + sched_priority : int; + end record; + pragma Convention (C, struct_sched_param); + + function pthread_setschedparam + (thread : pthread_t; + policy : int; + param : access struct_sched_param) return int; + pragma Import (C, pthread_setschedparam, "pthread_setschedparam"); + + function pthread_attr_setscope + (attr : access pthread_attr_t; + contentionscope : int) return int is (0); + -- pthread_attr_setscope is not implemented in production mode + + function pthread_attr_setinheritsched + (attr : access pthread_attr_t; + inheritsched : int) return int; + pragma Import (C, pthread_attr_setinheritsched); + + function pthread_attr_setschedpolicy + (attr : access pthread_attr_t; + policy : int) return int; + pragma Import (C, pthread_attr_setschedpolicy); + + function sched_yield return int; + pragma Import (C, sched_yield, "sched_yield"); + + -------------------------- + -- P1003.1c Section 16 -- + -------------------------- + + function pthread_attr_init (attributes : access pthread_attr_t) return int; + pragma Import (C, pthread_attr_init, "pthread_attr_init"); + + function pthread_attr_destroy + (attributes : access pthread_attr_t) return int; + pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy"); + + function pthread_attr_setdetachstate + (attr : access pthread_attr_t; + detachstate : int) return int; + pragma Import (C, pthread_attr_setdetachstate); + + function pthread_attr_setstacksize + (attr : access pthread_attr_t; + stacksize : size_t) return int; + pragma Import (C, pthread_attr_setstacksize); + + function pthread_create + (thread : access pthread_t; + attributes : access pthread_attr_t; + start_routine : Thread_Body; + arg : System.Address) return int; + pragma Import (C, pthread_create, "pthread_create"); + + procedure pthread_exit (status : System.Address); + pragma Import (C, pthread_exit, "pthread_exit"); + + function pthread_self return pthread_t; + pragma Import (C, pthread_self, "pthread_self"); + + -------------------------- + -- POSIX.1c Section 17 -- + -------------------------- + + function pthread_setspecific + (key : pthread_key_t; + value : System.Address) return int; + pragma Import (C, pthread_setspecific, "pthread_setspecific"); + + function pthread_getspecific + (key : pthread_key_t) return System.Address; + pragma Import (C, pthread_getspecific, "pthread_getspecific"); + + type destructor_pointer is access procedure (arg : System.Address); + pragma Convention (C, destructor_pointer); + + function pthread_key_create + (key : access pthread_key_t; + destructor : destructor_pointer + ) return int; + pragma Import (C, pthread_key_create, "pthread_key_create"); + + --------------------- + -- Multiprocessors -- + --------------------- + + function Current_CPU return Multiprocessors.CPU; + -- Return the id of the current CPU + + function Get_Affinity (Id : Thread_Id) return Multiprocessors.CPU_Range; + -- Return CPU affinity of the given thread (maybe Not_A_Specific_CPU) + + function Get_CPU (Id : Thread_Id) return Multiprocessors.CPU; + -- Return the CPU in charge of the given thread (always a valid CPU) + +private + + type sigset_t is array (1 .. 2) of long; + pragma Convention (C, sigset_t); + + type pid_t is new long; + + type time_t is new int64; + + type suseconds_t is new int; + + type timespec is record + tv_sec : time_t; + tv_nsec : long; + end record; + pragma Convention (C, timespec); + + type struct_timeval is record + tv_sec : time_t; + tv_usec : suseconds_t; + end record; + pragma Convention (C, struct_timeval); + + type st_attr is record + stksize : int; + prio : int; + inheritsched : int; + state : int; + sched : int; + detachstate : int; + guardsize : int; + end record; + pragma Convention (C, st_attr); + subtype st_attr_t is st_attr; + + type pthread_attr_t is record + pthread_attr_magic : unsigned; + st : st_attr_t; + pthread_attr_scope : int; + end record; + pragma Convention (C, pthread_attr_t); + + type pthread_condattr_t is record + cv_magic : unsigned; + cv_pshared : unsigned; + end record; + pragma Convention (C, pthread_condattr_t); + + type pthread_mutexattr_t is record + m_flags : unsigned; + m_prio_c : int; + m_pshared : int; + end record; + pragma Convention (C, pthread_mutexattr_t); + + type tid_t is new short; + type pthread_t is new tid_t; + + type block_obj_t is record + b_head : int; + end record; + pragma Convention (C, block_obj_t); + + type pthread_mutex_t is record + m_flags : unsigned; + m_owner : tid_t; + m_wait : block_obj_t; + m_prio_c : int; + m_oldprio : int; + m_count : int; + m_referenced : int; + end record; + pragma Convention (C, pthread_mutex_t); + type pthread_mutex_t_ptr is access all pthread_mutex_t; + + type pthread_cond_t is record + cv_magic : unsigned; + cv_wait : block_obj_t; + cv_mutex : pthread_mutex_t_ptr; + cv_refcnt : int; + end record; + pragma Convention (C, pthread_cond_t); + + type pthread_key_t is new int; + +end System.OS_Interface; diff --git a/gcc/ada/libgnarl/s-taspri-lynxos.ads b/gcc/ada/libgnarl/s-taspri-lynxos.ads new file mode 100644 index 0000000..298c069 --- /dev/null +++ b/gcc/ada/libgnarl/s-taspri-lynxos.ads @@ -0,0 +1,118 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- +-- -- +-- S Y S T E M . T A S K _ P R I M I T I V E S -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1991-2017, Florida State University -- +-- Copyright (C) 1995-2017, AdaCore -- +-- -- +-- 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 -- +-- . -- +-- -- +-- GNARL was developed by the GNARL team at Florida State University. -- +-- Extensive contributions were provided by Ada Core Technologies, Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This is LynxOS Family version of this package. + +pragma Polling (Off); +-- Turn off polling, we do not want ATC polling to take place during tasking +-- operations. It causes infinite loops and other problems. + +with System.OS_Interface; + +package System.Task_Primitives is + pragma Preelaborate; + + type Lock is limited private; + -- Should be used for implementation of protected objects + + type RTS_Lock is limited private; + -- Should be used inside the runtime system. The difference between Lock + -- and the RTS_Lock is that the latter serves only as a semaphore so that + -- we do not check for ceiling violations. + + type Suspension_Object is limited private; + -- Should be used for the implementation of Ada.Synchronous_Task_Control + + type Task_Body_Access is access procedure; + -- Pointer to the task body's entry point (or possibly a wrapper declared + -- local to the GNARL). + + type Private_Data is limited private; + -- Any information that the GNULLI needs maintained on a per-task basis. + -- A component of this type is guaranteed to be included in the + -- Ada_Task_Control_Block. + + subtype Task_Address is System.Address; + Task_Address_Size : constant := Standard'Address_Size; + -- Type used for task addresses and its size + + Alternate_Stack_Size : constant := System.OS_Interface.Alternate_Stack_Size; + -- Import value from System.OS_Interface + +private + + type Lock is record + RW : aliased System.OS_Interface.pthread_rwlock_t; + WO : aliased System.OS_Interface.pthread_mutex_t; + end record; + + type RTS_Lock is new System.OS_Interface.pthread_mutex_t; + + type Suspension_Object is record + State : Boolean; + pragma Atomic (State); + -- Boolean that indicates whether the object is open. This field is + -- marked Atomic to ensure that we can read its value without locking + -- the access to the Suspension_Object. + + Waiting : Boolean; + -- Flag showing if there is a task already suspended on this object + + L : aliased System.OS_Interface.pthread_mutex_t; + -- Protection for ensuring mutual exclusion on the Suspension_Object + + CV : aliased System.OS_Interface.pthread_cond_t; + -- Condition variable used to queue threads until condition is signaled + end record; + + type Private_Data is limited record + Thread : aliased System.OS_Interface.pthread_t; + pragma Atomic (Thread); + -- Thread field may be updated by two different threads of control. + -- (See, Enter_Task and Create_Task in s-taprop.adb). They put the same + -- value (thr_self value). We do not want to use lock on those + -- operations and the only thing we have to make sure is that they are + -- updated in atomic fashion. + + LWP : aliased System.OS_Interface.pthread_t; + -- The purpose of this field is to provide a better tasking support on + -- gdb. The order of the two first fields (Thread and LWP) is important. + -- On targets where lwp is not relevant, this is equivalent to Thread. + + CV : aliased System.OS_Interface.pthread_cond_t; + -- Should be commented ??? (in all versions of taspri) + + L : aliased RTS_Lock; + -- Protection for all components is lock L + end record; + +end System.Task_Primitives; -- 2.7.4