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Commit 16707e90 by Arnaud Charlet
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New files, to ease sync between AdaCore and FSF. 

From-SVN: r251958
parent b123dccb
Showing with 1383 additions and 0 deletions
gcc/ada/libgnarl/a-intnam-lynxos.ads 0 → 100644
------------------------------------------------------------------------------
-- --
-- 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 --
-- <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 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;
gcc/ada/libgnarl/s-intman-lynxos.adb 0 → 100644
------------------------------------------------------------------------------
-- --
-- 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 --
-- <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 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;
gcc/ada/libgnarl/s-osinte-lynxos178.adb 0 → 100644
------------------------------------------------------------------------------
-- --
-- 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 --
-- <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. --
-- --
------------------------------------------------------------------------------
-- 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;
gcc/ada/libgnarl/s-osinte-lynxos178e.ads 0 → 100644
------------------------------------------------------------------------------
-- --
-- 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 --
-- <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 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;
gcc/ada/libgnarl/s-taspri-lynxos.ads 0 → 100644
------------------------------------------------------------------------------
-- --
-- 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 --
-- <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 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;
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