-- --
-- S p e c --
-- --
--- Copyright (C) 1991-1994, Florida State University --
--- Copyright (C) 1995-2006, 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- --
-- 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 unsigned_int is mod 2 ** int'Size;
- 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");
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 Inline (kill);
- function getpid return t_id;
- pragma Inline (getpid);
+ 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.
+
+ 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 --
(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 --
----------------------
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, taskVarGet, "taskVarGet");
-- 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 tlsKeyCreate return int;
pragma Import (C, tlsKeyCreate, "tlsKeyCreate");
procedure taskDelete (tid : t_id);
pragma Import (C, taskDelete, "taskDelete");
- function Set_Time_Slice (ticks : int) return int;
- pragma Inline (Set_Time_Slice);
- -- Calls kernelTimeSlice under VxWorks 5.x
- -- Do nothing under VxWorks 6.x
+ 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 taskPriorityGet (tid : t_id; pPriority : access int) return int;
pragma Import (C, taskPriorityGet, "taskPriorityGet");
-- 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
function semMCreate (options : int) return SEM_ID;
pragma Import (C, semMCreate, "semMCreate");
- function semDelete (Sem : SEM_ID) return int;
- pragma Import (C, semDelete, "semDelete");
+ function semDelete (Sem : SEM_ID) return int
+ renames System.VxWorks.Ext.semDelete;
-- Delete a semaphore
function semGive (Sem : SEM_ID) return int;
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.
+
+ --------------------------------
+ -- Processor Affinity for SMP --
+ --------------------------------
+
+ 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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