$NetBSD: patch-gcc_ada_libgnarl_s-osinte____netbsd.ads,v 1.1 2022/03/13 08:34:04 nia Exp $ Add NetBSD interface. --- gcc/ada/libgnarl/s-osinte__netbsd.ads.orig 2021-10-08 11:29:30.503927461 +0200 +++ gcc/ada/libgnarl/s-osinte__netbsd.ads 2021-10-09 18:31:14.947869872 +0200 @@ -0,0 +1,663 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 1995-2015, 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. It is -- +-- now maintained by Ada Core Technologies Inc. in cooperation with Florida -- +-- State University (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +-- This is the NetBSD PTHREADS 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.OS_Constants; + +package System.OS_Interface is + pragma Preelaborate; + + pragma Linker_Options ("-pthread"); + + 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 char_array is Interfaces.C.char_array; + subtype int64 is Interfaces.Integer_64; + + ----------- + -- Errno -- + ----------- + + function Errno return int; + pragma Inline (Errno); + + EAGAIN : constant := 35; + EINTR : constant := 4; + EINVAL : constant := 22; + ENOMEM : constant := 12; + ETIMEDOUT : constant := 60; + + ------------- + -- Signals -- + ------------- + + Max_Interrupt : constant := 31; + 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) + SIGIOT : constant := 6; -- IOT instruction + SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future + 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) + SIGXCPU : constant := 24; -- CPU time limit exceeded + SIGXFSZ : constant := 25; -- filesize limit exceeded + SIGVTALRM : constant := 26; -- virtual timer expired + SIGPROF : constant := 27; -- profiling time alarm + SIGWINCH : constant := 28; -- window size change + SIGINFO : constant := 29; -- information request (NetBSD/FreeBSD) + SIGUSR1 : constant := 30; -- user defined signal 1 + SIGUSR2 : constant := 31; -- user defined signal 2 + + 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; + + -- Interrupts that must be unmasked at all times. NetBSD + -- pthreads will not allow an application to mask out any + -- interrupt needed by the threads library. + Unmasked : constant Signal_Set := + (SIGTRAP, SIGBUS, SIGTTIN, SIGTTOU, SIGTSTP); + + -- NetBSD will uses SIGPROF for timing. Do not allow a + -- handler to attach to this signal. + Reserved : constant Signal_Set := (0 .. 0 => SIGPROF); + + type sigset_t is private; + + function sigaddset + (set : access sigset_t; + sig : Signal) return int; + pragma Import (C, sigaddset, "__gnat_sigaddset"); + + function sigdelset + (set : access sigset_t; + sig : Signal) return int; + pragma Import (C, sigdelset, "__gnat_sigdelset"); + + function sigfillset (set : access sigset_t) return int; + pragma Import (C, sigfillset, "__gnat_sigfillset"); + + function sigismember + (set : access sigset_t; + sig : Signal) return int; + pragma Import (C, sigismember, "__gnat_sigismember"); + + function sigemptyset (set : access sigset_t) return int; + pragma Import (C, sigemptyset, "__gnat_sigemptyset"); + + -- sigcontext is architecture dependent, so define it private + type struct_sigcontext is private; + + -- ??? This is the current definition of struct_sigaction + -- as of 2021/10/02 in signal.h + type old_struct_sigaction is record + sa_handler : System.Address; + sa_mask : sigset_t; + sa_flags : int; + end record; + pragma Convention (C, old_struct_sigaction); + + -- This is an incorrect struct as of 2021/10/02 + type new_struct_sigaction is record + sa_handler : System.Address; + sa_flags : int; + sa_mask : sigset_t; + end record; + pragma Convention (C, new_struct_sigaction); + + -- Corrected to use old_struct_sigaction 2021/10/02 + subtype struct_sigaction is old_struct_sigaction; + type struct_sigaction_ptr is access all struct_sigaction; + + SIG_BLOCK : constant := 1; + SIG_UNBLOCK : constant := 2; + SIG_SETMASK : constant := 3; + + SIG_DFL : constant := 0; + SIG_IGN : constant := 1; + -- Added for completeness + SIG_ERR : constant := -1; + SIG_HOLD : constant := 3; + + SA_SIGINFO : constant := 16#0040#; + SA_ONSTACK : constant := 16#0001#; + + function sigaction + (sig : Signal; + act : struct_sigaction_ptr; + oact : struct_sigaction_ptr) return int; + pragma Import (C, sigaction, "__gnat_sigaction"); + + ---------- + -- Time -- + ---------- + + Time_Slice_Supported : constant Boolean := True; + -- Indicates whether time slicing is supported (i.e SCHED_RR is supported) + + type timespec is private; + + function nanosleep (rqtp, rmtp : access timespec) return int; + pragma Import (C, nanosleep, "__gnat_nanosleep"); + + type clockid_t is new unsigned; + + function clock_getres + (clock_id : clockid_t; + res : access timespec) return int; + pragma Import (C, clock_getres, "__gnat_clock_getres"); + + function clock_gettime + (clock_id : clockid_t; + tp : access timespec) + return int; + pragma Import (C, clock_gettime, "__gnat_clock_gettime"); + + 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); + + ------------------------- + -- Priority Scheduling -- + ------------------------- + + SCHED_OTHER : constant := 0; + SCHED_FIFO : constant := 1; + SCHED_RR : constant := 2; + + 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, "__gnat_kill"); + + function getpid return pid_t; + pragma Import (C, getpid, "getpid"); + + --------- + -- LWP -- + --------- + + function lwp_self return System.Address; + -- lwp_self does not exist on this thread library, revert to pthread_self + -- which is the closest approximation (with getpid). This function is + -- needed to share s-taprop.adb across POSIX-like targets. + 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); + + type pthread_t is private; + 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_rwlock_t is limited private; + type pthread_rwlockattr_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; + PTHREAD_SCOPE_SYSTEM : constant := 1; + + ----------- + -- Stack -- + ----------- + + type stack_t is record + ss_sp : System.Address; + ss_size : size_t; + ss_flags : int; + 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, "__gnat_sigaltstack"); + + Alternate_Stack : aliased System.Address; + -- This is a dummy definition, never used (Alternate_Stack_Size is null) + + 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. This + -- allows us to share s-osinte.adb between all the FSU run time. Note that + -- this value can only be true if pthread_t has a complete definition that + -- corresponds exactly to the C header files. + + 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; + pragma Import (C, Get_Page_Size, "_getpagesize"); + -- Returns the size of a page + + PROT_NONE : constant := 0; + PROT_READ : constant := 1; + PROT_WRITE : constant := 2; + PROT_EXEC : constant := 4; + PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC; + PROT_ON : constant := PROT_NONE; + PROT_OFF : constant := PROT_ALL; + + function mprotect (addr : Address; len : size_t; prot : int) return int; + pragma Import (C, mprotect); + + --------------------------------------- + -- Nonstandard Thread Initialization -- + --------------------------------------- + + -- FSU_THREADS requires pthread_init, which is nonstandard and this should + -- be invoked during the elaboration of s-taprop.adb. + + -- NetBSD does not require this so we provide an empty Ada body + + procedure pthread_init; + + ------------------------- + -- POSIX.1c Section 3 -- + ------------------------- + + function sigwait + (set : access sigset_t; + sig : access Signal) return int; + pragma Import (C, sigwait, "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; + + function pthread_mutexattr_setprioceiling + (attr : access pthread_mutexattr_t; + prioceiling : int) return int; + + type struct_sched_param is record + sched_priority : int; + end record; + pragma Convention (C, struct_sched_param); + + function pthread_getschedparam + (thread : pthread_t; + policy : access int; + param : access struct_sched_param) return int; + pragma Import (C, pthread_getschedparam, "pthread_getschedparam"); + + 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; + pragma Import (C, pthread_attr_setscope, "pthread_attr_setscope"); + + function pthread_attr_getscope + (attr : access pthread_attr_t; + contentionscope : access int) return int; + pragma Import (C, pthread_attr_getscope, "pthread_attr_getscope"); + + function pthread_attr_setinheritsched + (attr : access pthread_attr_t; + inheritsched : int) return int; + pragma Import + (C, pthread_attr_setinheritsched, "pthread_attr_setinheritsched"); + + function pthread_attr_getinheritsched + (attr : access pthread_attr_t; + inheritsched : access int) return int; + pragma Import + (C, pthread_attr_getinheritsched, "pthread_attr_getinheritsched"); + + function pthread_attr_setschedpolicy + (attr : access pthread_attr_t; + policy : int) return int; + pragma Import (C, pthread_attr_setschedpolicy, + "pthread_attr_setschedpolicy"); + + function pthread_attr_getschedpolicy + (attr : access pthread_attr_t; + policy : access int) return int; + pragma Import (C, pthread_attr_getschedpolicy, + "pthread_attr_getschedpolicy"); + + function pthread_attr_setschedparam + (attr : access pthread_attr_t; + sched_param : int) return int; + pragma Import (C, pthread_attr_setschedparam, "pthread_attr_setschedparam"); + + function pthread_attr_getschedparam + (attr : access pthread_attr_t; + sched_param : access int) return int; + pragma Import (C, pthread_attr_getschedparam, "pthread_attr_getschedparam"); + + 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, "pthread_attr_setdetachstate"); + + function pthread_attr_getdetachstate + (attr : access pthread_attr_t; + detachstate : access int) return int; + pragma Import + (C, pthread_attr_getdetachstate, "pthread_attr_getdetachstate"); + + function pthread_attr_getstacksize + (attr : access pthread_attr_t; + stacksize : access size_t) return int; + pragma Import + (C, pthread_attr_getstacksize, "pthread_attr_getstacksize"); + + function pthread_attr_setstacksize + (attr : access pthread_attr_t; + stacksize : size_t) return int; + pragma Import + (C, pthread_attr_setstacksize, "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"); + + function pthread_detach (thread : pthread_t) return int; + pragma Import (C, pthread_detach, "pthread_detach"); + + 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"); + +private + + type sigset_t is array (1 .. 4) of unsigned; + + -- In NetBSD the component sa_handler turns out to + -- be one a union type, and the selector is a macro: + -- #define sa_handler __sigaction_u._handler + -- #define sa_sigaction __sigaction_u._sigaction + + -- Should we add a signal_context type here ??? + -- How could it be done independent of the CPU architecture ??? + -- sigcontext type is opaque, so it is architecturally neutral. + -- It is always passed as an access type, so define it as an empty record + -- since the contents are not used anywhere. + + type struct_sigcontext is null record; + pragma Convention (C, struct_sigcontext); + + type pid_t is new int; + + type time_t is new int64; + + type timespec is record + ts_sec : time_t; + ts_nsec : long; + end record; + pragma Convention (C, timespec); + + type pthread_t is new System.Address; + type pthread_key_t is new int; + + type pthread_attr_t is record + Data : char_array (1 .. System.OS_Constants.PTHREAD_ATTR_SIZE); + end record; + pragma Convention (C, pthread_attr_t); + for pthread_attr_t'Alignment use size_t'Alignment; + + type pthread_mutex_t is record + Data : char_array (1 .. System.OS_Constants.PTHREAD_MUTEX_SIZE); + end record; + pragma Convention (C, pthread_mutex_t); + for pthread_mutex_t'Alignment use size_t'Alignment; + + type pthread_mutexattr_t is record + Data : char_array (1 .. System.OS_Constants.PTHREAD_MUTEXATTR_SIZE); + end record; + pragma Convention (C, pthread_mutexattr_t); + for pthread_mutexattr_t'Alignment use size_t'Alignment; + + type pthread_cond_t is record + Data : char_array (1 .. System.OS_Constants.PTHREAD_COND_SIZE); + end record; + pragma Convention (C, pthread_cond_t); + for pthread_cond_t'Alignment use size_t'Alignment; + + type pthread_condattr_t is record + Data : char_array (1 .. System.OS_Constants.PTHREAD_CONDATTR_SIZE); + end record; + pragma Convention (C, pthread_condattr_t); + for pthread_condattr_t'Alignment use size_t'Alignment; + + type pthread_rwlock_t is record + Data : char_array (1 .. System.OS_Constants.PTHREAD_RWLOCK_SIZE); + end record; + pragma Convention (C, pthread_rwlock_t); + for pthread_rwlock_t'Alignment use size_t'Alignment; + + type pthread_rwlockattr_t is record + Data : char_array (1 .. System.OS_Constants.PTHREAD_RWLOCKATTR_SIZE); + end record; + pragma Convention (C, pthread_rwlockattr_t); + for pthread_rwlockattr_t'Alignment use size_t'Alignment; + +end System.OS_Interface;