1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . S O F T _ L I N K S --
9 -- Copyright (C) 1992-2006, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
35 -- We must turn polling off for this unit, because otherwise we get
36 -- an infinite loop from the code within the Poll routine itself.
38 with System.Parameters;
39 -- Used for Sec_Stack_Ratio
41 pragma Warnings (Off);
42 -- Disable warnings since System.Secondary_Stack is currently not
44 with System.Secondary_Stack;
47 package body System.Soft_Links is
49 package SST renames System.Secondary_Stack;
51 NT_Exc_Stack : array (0 .. 8192) of aliased Character;
52 for NT_Exc_Stack'Alignment use Standard'Maximum_Alignment;
53 -- Allocate an exception stack for the main program to use.
54 -- This is currently only used under VMS.
57 -- Note: we rely on the default initialization of NT_TSD
63 procedure Abort_Defer_NT is
68 ----------------------
69 -- Abort_Handler_NT --
70 ----------------------
72 procedure Abort_Handler_NT is
77 ----------------------
78 -- Abort_Undefer_NT --
79 ----------------------
81 procedure Abort_Undefer_NT is
90 procedure Adafinal_NT is
92 -- Handle normal task termination by the environment task, but only
93 -- for the normal task termination. In the case of Abnormal and
94 -- Unhandled_Exception they must have been handled before, and the
95 -- task termination soft link must have been changed so the task
96 -- termination routine is not executed twice.
98 Task_Termination_Handler.all (Ada.Exceptions.Null_Occurrence);
100 -- Finalize the global list for controlled objects if needed
102 Finalize_Global_List.all;
105 ---------------------------
106 -- Check_Abort_Status_NT --
107 ---------------------------
109 function Check_Abort_Status_NT return Integer is
111 return Boolean'Pos (False);
112 end Check_Abort_Status_NT;
114 ------------------------
115 -- Complete_Master_NT --
116 ------------------------
118 procedure Complete_Master_NT is
121 end Complete_Master_NT;
127 procedure Create_TSD (New_TSD : in out TSD) is
128 use type Parameters.Size_Type;
130 SS_Ratio_Dynamic : constant Boolean :=
131 Parameters.Sec_Stack_Ratio = Parameters.Dynamic;
134 if SS_Ratio_Dynamic then
136 (New_TSD.Sec_Stack_Addr, SST.Default_Secondary_Stack_Size);
140 -----------------------
141 -- Current_Master_NT --
142 -----------------------
144 function Current_Master_NT return Integer is
147 end Current_Master_NT;
153 procedure Destroy_TSD (Old_TSD : in out TSD) is
155 SST.SS_Free (Old_TSD.Sec_Stack_Addr);
158 ---------------------
159 -- Enter_Master_NT --
160 ---------------------
162 procedure Enter_Master_NT is
167 --------------------------
168 -- Get_Current_Excep_NT --
169 --------------------------
171 function Get_Current_Excep_NT return EOA is
173 return NT_TSD.Current_Excep'Access;
174 end Get_Current_Excep_NT;
176 ---------------------------
177 -- Get_Exc_Stack_Addr_NT --
178 ---------------------------
180 function Get_Exc_Stack_Addr_NT return Address is
182 return NT_Exc_Stack (NT_Exc_Stack'Last)'Address;
183 end Get_Exc_Stack_Addr_NT;
185 -----------------------------
186 -- Get_Exc_Stack_Addr_Soft --
187 -----------------------------
189 function Get_Exc_Stack_Addr_Soft return Address is
191 return Get_Exc_Stack_Addr.all;
192 end Get_Exc_Stack_Addr_Soft;
194 ------------------------
195 -- Get_GNAT_Exception --
196 ------------------------
198 function Get_GNAT_Exception return Ada.Exceptions.Exception_Id is
200 return Ada.Exceptions.Exception_Identity (Get_Current_Excep.all.all);
201 end Get_GNAT_Exception;
203 ---------------------------
204 -- Get_Jmpbuf_Address_NT --
205 ---------------------------
207 function Get_Jmpbuf_Address_NT return Address is
209 return NT_TSD.Jmpbuf_Address;
210 end Get_Jmpbuf_Address_NT;
212 -----------------------------
213 -- Get_Jmpbuf_Address_Soft --
214 -----------------------------
216 function Get_Jmpbuf_Address_Soft return Address is
218 return Get_Jmpbuf_Address.all;
219 end Get_Jmpbuf_Address_Soft;
221 ---------------------------
222 -- Get_Sec_Stack_Addr_NT --
223 ---------------------------
225 function Get_Sec_Stack_Addr_NT return Address is
227 return NT_TSD.Sec_Stack_Addr;
228 end Get_Sec_Stack_Addr_NT;
230 -----------------------------
231 -- Get_Sec_Stack_Addr_Soft --
232 -----------------------------
234 function Get_Sec_Stack_Addr_Soft return Address is
236 return Get_Sec_Stack_Addr.all;
237 end Get_Sec_Stack_Addr_Soft;
239 -----------------------
240 -- Get_Stack_Info_NT --
241 -----------------------
243 function Get_Stack_Info_NT return Stack_Checking.Stack_Access is
245 return NT_TSD.Pri_Stack_Info'Access;
246 end Get_Stack_Info_NT;
248 -------------------------------
249 -- Null_Finalize_Global_List --
250 -------------------------------
252 procedure Null_Finalize_Global_List is
255 end Null_Finalize_Global_List;
257 ---------------------------
258 -- Set_Jmpbuf_Address_NT --
259 ---------------------------
261 procedure Set_Jmpbuf_Address_NT (Addr : Address) is
263 NT_TSD.Jmpbuf_Address := Addr;
264 end Set_Jmpbuf_Address_NT;
266 procedure Set_Jmpbuf_Address_Soft (Addr : Address) is
268 Set_Jmpbuf_Address (Addr);
269 end Set_Jmpbuf_Address_Soft;
271 ---------------------------
272 -- Set_Sec_Stack_Addr_NT --
273 ---------------------------
275 procedure Set_Sec_Stack_Addr_NT (Addr : Address) is
277 NT_TSD.Sec_Stack_Addr := Addr;
278 end Set_Sec_Stack_Addr_NT;
280 -----------------------------
281 -- Set_Sec_Stack_Addr_Soft --
282 -----------------------------
284 procedure Set_Sec_Stack_Addr_Soft (Addr : Address) is
286 Set_Sec_Stack_Addr (Addr);
287 end Set_Sec_Stack_Addr_Soft;
293 procedure Task_Lock_NT is
302 function Task_Name_NT return String is
307 -------------------------
308 -- Task_Termination_NT --
309 -------------------------
311 procedure Task_Termination_NT (Excep : EO) is
312 pragma Warnings (Off, Excep);
315 end Task_Termination_NT;
321 procedure Task_Unlock_NT is
326 -------------------------
327 -- Update_Exception_NT --
328 -------------------------
330 procedure Update_Exception_NT (X : EO := Current_Target_Exception) is
332 Ada.Exceptions.Save_Occurrence (NT_TSD.Current_Excep, X);
333 end Update_Exception_NT;
335 end System.Soft_Links;