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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . T H R E A D S --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2003 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 2, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, 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 unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This is the VxWorks version of this package
pragma Restrictions (No_Tasking);
-- The VxWorks version of this package is intended only for programs
-- which do not use Ada tasking. This restriction ensures that this
-- will be checked by the binder.
with System.Secondary_Stack;
with Unchecked_Conversion;
with System.Threads.Initialization;
package body System.Threads is
package SSS renames System.Secondary_Stack;
Current_ATSD : aliased System.Address := System.Null_Address;
pragma Export (C, Current_ATSD, "__gnat_current_atsd");
function From_Address is
new Unchecked_Conversion (Address, ATSD_Access);
procedure Init_Float;
pragma Import (C, Init_Float, "__gnat_init_float");
procedure Install_Handler;
pragma Import (C, Install_Handler, "__gnat_install_handler");
-----------------------
-- Get_Current_Excep --
-----------------------
function Get_Current_Excep return EOA is
CTSD : ATSD_Access := From_Address (Current_ATSD);
begin
pragma Assert (Current_ATSD /= System.Null_Address);
return CTSD.Current_Excep'Access;
end Get_Current_Excep;
------------------------
-- Get_Jmpbuf_Address --
------------------------
function Get_Jmpbuf_Address return Address is
CTSD : ATSD_Access := From_Address (Current_ATSD);
begin
pragma Assert (Current_ATSD /= System.Null_Address);
return CTSD.Jmpbuf_Address;
end Get_Jmpbuf_Address;
------------------------
-- Get_Sec_Stack_Addr --
------------------------
function Get_Sec_Stack_Addr return Address is
CTSD : ATSD_Access := From_Address (Current_ATSD);
begin
pragma Assert (Current_ATSD /= System.Null_Address);
return CTSD.Sec_Stack_Addr;
end Get_Sec_Stack_Addr;
------------------------
-- Set_Jmpbuf_Address --
------------------------
procedure Set_Jmpbuf_Address (Addr : Address) is
CTSD : ATSD_Access := From_Address (Current_ATSD);
begin
pragma Assert (Current_ATSD /= System.Null_Address);
CTSD.Jmpbuf_Address := Addr;
end Set_Jmpbuf_Address;
------------------------
-- Set_Sec_Stack_Addr --
------------------------
procedure Set_Sec_Stack_Addr (Addr : Address) is
CTSD : ATSD_Access := From_Address (Current_ATSD);
begin
pragma Assert (Current_ATSD /= System.Null_Address);
CTSD.Sec_Stack_Addr := Addr;
end Set_Sec_Stack_Addr;
-----------------------
-- Thread_Body_Enter --
-----------------------
procedure Thread_Body_Enter
(Sec_Stack_Address : System.Address;
Sec_Stack_Size : Natural;
Process_ATSD_Address : System.Address)
is
-- Current_ATSD must already be a taskVar of taskIdSelf.
-- No assertion because taskVarGet is not available on VxWorks/CERT
TSD : ATSD_Access := From_Address (Process_ATSD_Address);
begin
TSD.Sec_Stack_Addr := Sec_Stack_Address;
SSS.SS_Init (TSD.Sec_Stack_Addr, Sec_Stack_Size);
Current_ATSD := Process_ATSD_Address;
Install_Handler;
Init_Float;
end Thread_Body_Enter;
----------------------------------
-- Thread_Body_Exceptional_Exit --
----------------------------------
procedure Thread_Body_Exceptional_Exit
(EO : Ada.Exceptions.Exception_Occurrence)
is
pragma Unreferenced (EO);
begin
-- No action for this target
null;
end Thread_Body_Exceptional_Exit;
-----------------------
-- Thread_Body_Leave --
-----------------------
procedure Thread_Body_Leave is
begin
-- No action for this target
null;
end Thread_Body_Leave;
begin
System.Threads.Initialization.Init_RTS;
end System.Threads;
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