------------------------------------------------------------------------------
-- --
--- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
+-- 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) 1995-2004, Free Software Foundation, Inc. --
+-- Copyright (C) 1991-1994, Florida State University --
+-- Copyright (C) 1995-2009, Free Software Foundation, Inc. --
-- --
-- GNARL is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNARL; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- This is the VxWorks version of this package
-- This package encapsulates all direct interfaces to OS services
--- that are needed by children of System.
+-- 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 Interfaces.C;
with System.VxWorks;
+with System.VxWorks.Ext;
package System.OS_Interface is
pragma Preelaborate;
- subtype int is Interfaces.C.int;
- subtype short is Short_Integer;
- type long is new Long_Integer;
- type unsigned_long is mod 2 ** long'Size;
- type size_t is mod 2 ** Standard'Address_Size;
+ subtype int is Interfaces.C.int;
+ subtype short is Short_Integer;
+ type unsigned_int is mod 2 ** int'Size;
+ type long is new Long_Integer;
+ type unsigned_long is mod 2 ** long'Size;
+ type long_long is new Long_Long_Integer;
+ type unsigned_long_long is mod 2 ** long_long'Size;
+ type size_t is mod 2 ** Standard'Address_Size;
-----------
-- Errno --
FUNC_ERR : constant := -1;
----------------------------
- -- Signals and Interrupts --
+ -- Signals and interrupts --
----------------------------
- NSIG : constant := 32;
+ NSIG : constant := 64;
-- Number of signals on the target OS
type Signal is new int range 0 .. Interfaces.C."-" (NSIG, 1);
Max_Interrupt : constant := Max_HW_Interrupt;
- SIGILL : constant := 4; -- illegal instruction (not reset)
- SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
- SIGFPE : constant := 8; -- floating point exception
- SIGBUS : constant := 10; -- bus error
- SIGSEGV : constant := 11; -- segmentation violation
+ -- Signals common to Vxworks 5.x and 6.x
+
+ SIGILL : constant := 4; -- illegal instruction (not reset when caught)
+ SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
+ SIGFPE : constant := 8; -- floating point exception
+ SIGBUS : constant := 10; -- bus error
+ SIGSEGV : constant := 11; -- segmentation violation
+
+ -- Signals specific to VxWorks 6.x
+
+ SIGHUP : constant := 1; -- hangup
+ SIGINT : constant := 2; -- interrupt
+ SIGQUIT : constant := 3; -- quit
+ SIGTRAP : constant := 5; -- trace trap (not reset when caught)
+ SIGEMT : constant := 7; -- EMT instruction
+ SIGKILL : constant := 9; -- kill
+ SIGFMT : constant := 12; -- STACK FORMAT ERROR (not posix)
+ 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
+ SIGCNCL : constant := 16; -- pthreads cancellation signal
+ SIGSTOP : constant := 17; -- sendable stop signal not from tty
+ SIGTSTP : constant := 18; -- stop signal from tty
+ SIGCONT : constant := 19; -- continue a stopped process
+ SIGCHLD : constant := 20; -- to parent on child stop or exit
+ SIGTTIN : constant := 21; -- to readers pgrp upon background tty read
+ SIGTTOU : constant := 22; -- like TTIN for output
+
+ SIGRES1 : constant := 23; -- reserved signal number (Not POSIX)
+ SIGRES2 : constant := 24; -- reserved signal number (Not POSIX)
+ SIGRES3 : constant := 25; -- reserved signal number (Not POSIX)
+ SIGRES4 : constant := 26; -- reserved signal number (Not POSIX)
+ SIGRES5 : constant := 27; -- reserved signal number (Not POSIX)
+ SIGRES6 : constant := 28; -- reserved signal number (Not POSIX)
+ SIGRES7 : constant := 29; -- reserved signal number (Not POSIX)
+
+ SIGUSR1 : constant := 30; -- user defined signal 1
+ SIGUSR2 : constant := 31; -- user defined signal 2
+
+ SIGPOLL : constant := 32; -- pollable event
+ SIGPROF : constant := 33; -- profiling timer expired
+ SIGSYS : constant := 34; -- bad system call
+ SIGURG : constant := 35; -- high bandwidth data is available at socket
+ SIGVTALRM : constant := 36; -- virtual timer expired
+ SIGXCPU : constant := 37; -- CPU time limit exceeded
+ SIGXFSZ : constant := 38; -- file size time limit exceeded
+
+ SIGEVTS : constant := 39; -- signal event thread send
+ SIGEVTD : constant := 40; -- signal event thread delete
+
+ SIGRTMIN : constant := 48; -- Realtime signal min
+ SIGRTMAX : constant := 63; -- Realtime signal max
-----------------------------------
-- Signal processing definitions --
-----------------------------------
- -- The how in sigprocmask().
+ -- The how in sigprocmask()
+
SIG_BLOCK : constant := 1;
SIG_UNBLOCK : constant := 2;
SIG_SETMASK : constant := 3;
- -- The sa_flags in struct sigaction.
- SA_SIGINFO : constant := 16#0002#;
- SA_ONSTACK : constant := 16#0004#;
+ -- The sa_flags in struct sigaction
+
+ SA_SIGINFO : constant := 16#0002#;
+ SA_ONSTACK : constant := 16#0004#;
SIG_DFL : constant := 0;
SIG_IGN : constant := 1;
pragma Import (C, sigaction, "sigaction");
type isr_address is access procedure (sig : int);
+ pragma Convention (C, isr_address);
function c_signal (sig : Signal; handler : isr_address) return isr_address;
pragma Import (C, c_signal, "signal");
function sigwait (set : access sigset_t; sig : access Signal) return int;
pragma Inline (sigwait);
- type sigset_t_ptr is access all sigset_t;
-
function pthread_sigmask
(how : int;
- set : sigset_t_ptr;
- oset : sigset_t_ptr) return int;
+ set : access sigset_t;
+ oset : access sigset_t) return int;
pragma Import (C, pthread_sigmask, "sigprocmask");
- type t_id is new long;
+ subtype t_id is System.VxWorks.Ext.t_id;
subtype Thread_Id is t_id;
function kill (pid : t_id; sig : Signal) return int;
- pragma Import (C, kill, "kill");
+ pragma Inline (kill);
+
+ function getpid return t_id renames System.VxWorks.Ext.getpid;
+
+ function Task_Stop (tid : t_id) return int
+ renames System.VxWorks.Ext.Task_Stop;
+ -- If we are in the kernel space, stop the task whose t_id is
+ -- given in parameter in such a way that it can be examined by the
+ -- debugger. This typically maps to taskSuspend on VxWorks 5 and
+ -- to taskStop on VxWorks 6.
+
+ function Task_Cont (tid : t_id) return int
+ renames System.VxWorks.Ext.Task_Cont;
+ -- If we are in the kernel space, continue the task whose t_id is
+ -- given in parameter if it has been stopped previously to be examined
+ -- by the debugger (e.g. by taskStop). It typically maps to taskResume
+ -- on VxWorks 5 and to taskCont on VxWorks 6.
- -- VxWorks doesn't have getpid; taskIdSelf is the equivalent
- -- routine.
- function getpid return t_id;
- pragma Import (C, getpid, "taskIdSelf");
+ function Int_Lock return int renames System.VxWorks.Ext.Int_Lock;
+ -- If we are in the kernel space, lock interrupts. It typically maps to
+ -- intLock.
+
+ function Int_Unlock return int renames System.VxWorks.Ext.Int_Unlock;
+ -- If we are in the kernel space, unlock interrupts. It typically maps to
+ -- intUnlock.
----------
-- Time --
pragma Inline (To_Timespec);
function To_Clock_Ticks (D : Duration) return int;
- -- Convert a duration value (in seconds) into clock ticks.
+ -- Convert a duration value (in seconds) into clock ticks
function clock_gettime
(clock_id : clockid_t; tp : access timespec) return int;
pragma Import (C, clock_gettime, "clock_gettime");
- type ULONG is new unsigned_long;
-
- procedure tickSet (ticks : ULONG);
- pragma Import (C, tickSet, "tickSet");
-
- function tickGet return ULONG;
- pragma Import (C, tickGet, "tickGet");
-
----------------------
-- Utility Routines --
----------------------
- function To_VxWorks_Priority (Priority : in int) return int;
+ function To_VxWorks_Priority (Priority : int) return int;
pragma Inline (To_VxWorks_Priority);
-- Convenience routine to convert between VxWorks priority and Ada priority
function taskIdSelf return t_id;
pragma Import (C, taskIdSelf, "taskIdSelf");
+ function taskOptionsGet (tid : t_id; pOptions : access int) return int;
+ pragma Import (C, taskOptionsGet, "taskOptionsGet");
+
function taskSuspend (tid : t_id) return int;
pragma Import (C, taskSuspend, "taskSuspend");
function taskIsSuspended (tid : t_id) return int;
pragma Import (C, taskIsSuspended, "taskIsSuspended");
+ function taskDelay (ticks : int) return int;
+ procedure taskDelay (ticks : int);
+ pragma Import (C, taskDelay, "taskDelay");
+
+ function sysClkRateGet return int;
+ pragma Import (C, sysClkRateGet, "sysClkRateGet");
+
+ -- VxWorks 5.x specific functions
+ -- Must not be called from run-time for versions that do not support
+ -- taskVarLib: eg VxWorks 6 RTPs
+
function taskVarAdd
(tid : t_id; pVar : access System.Address) return int;
pragma Import (C, taskVarAdd, "taskVarAdd");
pVar : access System.Address) return int;
pragma Import (C, taskVarGet, "taskVarGet");
- function taskDelay (ticks : int) return int;
- procedure taskDelay (ticks : int);
- pragma Import (C, taskDelay, "taskDelay");
+ -- VxWorks 6.x specific functions
+ -- Can only be called from the VxWorks 6 run-time libary that supports
+ -- tlsLib, and not by the VxWorks 6.6 SMP library
- function sysClkRateGet return int;
- pragma Import (C, sysClkRateGet, "sysClkRateGet");
+ function tlsKeyCreate return int;
+ pragma Import (C, tlsKeyCreate, "tlsKeyCreate");
+
+ function tlsValueGet (key : int) return System.Address;
+ pragma Import (C, tlsValueGet, "tlsValueGet");
+
+ function tlsValueSet (key : int; value : System.Address) return STATUS;
+ pragma Import (C, tlsValueSet, "tlsValueSet");
-- Option flags for taskSpawn
VX_UNBREAKABLE : constant := 16#0002#;
- VX_FP_TASK : constant := 16#0008#;
VX_FP_PRIVATE_ENV : constant := 16#0080#;
VX_NO_STACK_FILL : constant := 16#0100#;
procedure taskDelete (tid : t_id);
pragma Import (C, taskDelete, "taskDelete");
- function kernelTimeSlice (ticks : int) return int;
- pragma Import (C, kernelTimeSlice, "kernelTimeSlice");
+ function Set_Time_Slice (ticks : int) return int
+ renames System.VxWorks.Ext.Set_Time_Slice;
+ -- Calls kernelTimeSlice under VxWorks 5.x, VxWorks 653, or in VxWorks 6
+ -- kernel apps. Returns ERROR for RTPs, VxWorks 5 /CERT
- function taskPrioritySet
- (tid : t_id; newPriority : int) return int;
+ function taskPriorityGet (tid : t_id; pPriority : access int) return int;
+ pragma Import (C, taskPriorityGet, "taskPriorityGet");
+
+ function taskPrioritySet (tid : t_id; newPriority : int) return int;
pragma Import (C, taskPrioritySet, "taskPrioritySet");
- -- Semaphore creation flags.
+ -- Semaphore creation flags
SEM_Q_FIFO : constant := 0;
SEM_Q_PRIORITY : constant := 1;
SEM_EMPTY : constant := 0;
SEM_FULL : constant := 1;
- -- Semaphore take (semTake) time constants.
+ -- Semaphore take (semTake) time constants
WAIT_FOREVER : constant := -1;
NO_WAIT : constant := 0;
- -- Error codes (errno). The lower level 16 bits are the
- -- error code, with the upper 16 bits representing the
- -- module number in which the error occurred. By convention,
- -- the module number is 0 for UNIX errors. VxWorks reserves
- -- module numbers 1-500, with the remaining module numbers
- -- being available for user applications.
+ -- Error codes (errno). The lower level 16 bits are the error code, with
+ -- the upper 16 bits representing the module number in which the error
+ -- occurred. By convention, the module number is 0 for UNIX errors. VxWorks
+ -- reserves module numbers 1-500, with the remaining module numbers being
+ -- available for user applications.
M_objLib : constant := 61 * 2**16;
-- semTake() failure with ticks = NO_WAIT
-- semTake() timeout with ticks > NO_WAIT
S_objLib_OBJ_TIMEOUT : constant := M_objLib + 4;
- type SEM_ID is new System.Address;
+ subtype SEM_ID is System.VxWorks.Ext.SEM_ID;
-- typedef struct semaphore *SEM_ID;
- -- We use two different kinds of VxWorks semaphores: mutex
- -- and binary semaphores. A null ID is returned when
- -- a semaphore cannot be created.
+ -- We use two different kinds of VxWorks semaphores: mutex and binary
+ -- semaphores. A null ID is returned when a semaphore cannot be created.
function semBCreate (options : int; initial_state : int) return SEM_ID;
+ pragma Import (C, semBCreate, "semBCreate");
-- Create a binary semaphore. Return ID, or 0 if memory could not
-- be allocated.
- pragma Import (C, semBCreate, "semBCreate");
function semMCreate (options : int) return SEM_ID;
pragma Import (C, semMCreate, "semMCreate");
- function semDelete (Sem : SEM_ID) return int;
+ function semDelete (Sem : SEM_ID) return int
+ renames System.VxWorks.Ext.semDelete;
-- Delete a semaphore
- pragma Import (C, semDelete, "semDelete");
function semGive (Sem : SEM_ID) return int;
pragma Import (C, semGive, "semGive");
function semTake (Sem : SEM_ID; timeout : int) return int;
+ pragma Import (C, semTake, "semTake");
-- Attempt to take binary semaphore. Error is returned if operation
-- times out
- pragma Import (C, semTake, "semTake");
function semFlush (SemID : SEM_ID) return STATUS;
- -- Release all threads blocked on the semaphore
pragma Import (C, semFlush, "semFlush");
+ -- Release all threads blocked on the semaphore
+
+ ------------------------------------------------------------
+ -- Binary Semaphore Wrapper to Support interrupt Tasks --
+ ------------------------------------------------------------
+
+ type Binary_Semaphore_Id is new Long_Integer;
+
+ function Binary_Semaphore_Create return Binary_Semaphore_Id;
+ pragma Inline (Binary_Semaphore_Create);
+
+ function Binary_Semaphore_Delete (ID : Binary_Semaphore_Id) return int;
+ pragma Inline (Binary_Semaphore_Delete);
+
+ function Binary_Semaphore_Obtain (ID : Binary_Semaphore_Id) return int;
+ pragma Inline (Binary_Semaphore_Obtain);
+
+ function Binary_Semaphore_Release (ID : Binary_Semaphore_Id) return int;
+ pragma Inline (Binary_Semaphore_Release);
+
+ function Binary_Semaphore_Flush (ID : Binary_Semaphore_Id) return int;
+ pragma Inline (Binary_Semaphore_Flush);
+
+ ------------------------------------------------------------
+ -- Hardware Interrupt Wrappers to Support Interrupt Tasks --
+ ------------------------------------------------------------
+
+ type Interrupt_Handler is access procedure (parameter : System.Address);
+ pragma Convention (C, Interrupt_Handler);
+
+ type Interrupt_Vector is new System.Address;
+
+ function Interrupt_Connect
+ (Vector : Interrupt_Vector;
+ Handler : Interrupt_Handler;
+ Parameter : System.Address := System.Null_Address) return int;
+ pragma Inline (Interrupt_Connect);
+ -- Use this to set up an user handler. The routine installs a a user
+ -- handler which is invoked after the OS has saved enough context for a
+ -- high-level language routine to be safely invoked.
+
+ function Interrupt_Number_To_Vector (intNum : int) return Interrupt_Vector;
+ pragma Inline (Interrupt_Number_To_Vector);
+ -- Convert a logical interrupt number to the hardware interrupt vector
+ -- number used to connect the interrupt.
- function taskLock return int;
- pragma Import (C, taskLock, "taskLock");
+ --------------------------------
+ -- Processor Affinity for SMP --
+ --------------------------------
- function taskUnlock return int;
- pragma Import (C, taskUnlock, "taskUnlock");
+ function taskCpuAffinitySet (tid : t_id; CPU : int) return int
+ renames System.VxWorks.Ext.taskCpuAffinitySet;
+ -- For SMP run-times the affinity to CPU.
+ -- For uniprocessor systems return ERROR status.
private
- type sigset_t is new long;
+ type sigset_t is new unsigned_long_long;
type pid_t is new int;
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