1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . S O F T _ L I N K S --
9 -- Copyright (C) 1992-2008, 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 ------------------------------------------------------------------------------
34 pragma Warnings (Off);
39 -- We must turn polling off for this unit, because otherwise we get an
40 -- infinite loop from the code within the Poll routine itself.
42 with System.Parameters;
44 pragma Warnings (Off);
45 -- Disable warnings since System.Secondary_Stack is currently not Preelaborate
46 with System.Secondary_Stack;
49 package body System.Soft_Links is
51 package SST renames System.Secondary_Stack;
53 NT_Exc_Stack : array (0 .. 8192) of aliased Character;
54 for NT_Exc_Stack'Alignment use Standard'Maximum_Alignment;
55 -- Allocate an exception stack for the main program to use.
56 -- This is currently only used under VMS.
59 -- Note: we rely on the default initialization of NT_TSD
65 procedure Abort_Defer_NT is
70 ----------------------
71 -- Abort_Handler_NT --
72 ----------------------
74 procedure Abort_Handler_NT is
79 ----------------------
80 -- Abort_Undefer_NT --
81 ----------------------
83 procedure Abort_Undefer_NT is
92 procedure Adafinal_NT is
94 -- Handle normal task termination by the environment task, but only
95 -- for the normal task termination. In the case of Abnormal and
96 -- Unhandled_Exception they must have been handled before, and the
97 -- task termination soft link must have been changed so the task
98 -- termination routine is not executed twice.
100 Task_Termination_Handler.all (Ada.Exceptions.Null_Occurrence);
102 -- Finalize the global list for controlled objects if needed
104 Finalize_Global_List.all;
107 ---------------------------
108 -- Check_Abort_Status_NT --
109 ---------------------------
111 function Check_Abort_Status_NT return Integer is
113 return Boolean'Pos (False);
114 end Check_Abort_Status_NT;
116 ------------------------
117 -- Complete_Master_NT --
118 ------------------------
120 procedure Complete_Master_NT is
123 end Complete_Master_NT;
129 procedure Create_TSD (New_TSD : in out TSD) is
130 use type Parameters.Size_Type;
132 SS_Ratio_Dynamic : constant Boolean :=
133 Parameters.Sec_Stack_Ratio = Parameters.Dynamic;
136 if SS_Ratio_Dynamic then
138 (New_TSD.Sec_Stack_Addr, SST.Default_Secondary_Stack_Size);
142 -----------------------
143 -- Current_Master_NT --
144 -----------------------
146 function Current_Master_NT return Integer is
149 end Current_Master_NT;
155 procedure Destroy_TSD (Old_TSD : in out TSD) is
157 SST.SS_Free (Old_TSD.Sec_Stack_Addr);
160 ---------------------
161 -- Enter_Master_NT --
162 ---------------------
164 procedure Enter_Master_NT is
169 --------------------------
170 -- Get_Current_Excep_NT --
171 --------------------------
173 function Get_Current_Excep_NT return EOA is
175 return NT_TSD.Current_Excep'Access;
176 end Get_Current_Excep_NT;
178 ---------------------------
179 -- Get_Exc_Stack_Addr_NT --
180 ---------------------------
182 function Get_Exc_Stack_Addr_NT return Address is
184 return NT_Exc_Stack (NT_Exc_Stack'Last)'Address;
185 end Get_Exc_Stack_Addr_NT;
187 -----------------------------
188 -- Get_Exc_Stack_Addr_Soft --
189 -----------------------------
191 function Get_Exc_Stack_Addr_Soft return Address is
193 return Get_Exc_Stack_Addr.all;
194 end Get_Exc_Stack_Addr_Soft;
196 ------------------------
197 -- Get_GNAT_Exception --
198 ------------------------
200 function Get_GNAT_Exception return Ada.Exceptions.Exception_Id is
202 return Ada.Exceptions.Exception_Identity (Get_Current_Excep.all.all);
203 end Get_GNAT_Exception;
205 ---------------------------
206 -- Get_Jmpbuf_Address_NT --
207 ---------------------------
209 function Get_Jmpbuf_Address_NT return Address is
211 return NT_TSD.Jmpbuf_Address;
212 end Get_Jmpbuf_Address_NT;
214 -----------------------------
215 -- Get_Jmpbuf_Address_Soft --
216 -----------------------------
218 function Get_Jmpbuf_Address_Soft return Address is
220 return Get_Jmpbuf_Address.all;
221 end Get_Jmpbuf_Address_Soft;
223 ---------------------------
224 -- Get_Sec_Stack_Addr_NT --
225 ---------------------------
227 function Get_Sec_Stack_Addr_NT return Address is
229 return NT_TSD.Sec_Stack_Addr;
230 end Get_Sec_Stack_Addr_NT;
232 -----------------------------
233 -- Get_Sec_Stack_Addr_Soft --
234 -----------------------------
236 function Get_Sec_Stack_Addr_Soft return Address is
238 return Get_Sec_Stack_Addr.all;
239 end Get_Sec_Stack_Addr_Soft;
241 -----------------------
242 -- Get_Stack_Info_NT --
243 -----------------------
245 function Get_Stack_Info_NT return Stack_Checking.Stack_Access is
247 return NT_TSD.Pri_Stack_Info'Access;
248 end Get_Stack_Info_NT;
250 -------------------------------
251 -- Null_Finalize_Global_List --
252 -------------------------------
254 procedure Null_Finalize_Global_List is
257 end Null_Finalize_Global_List;
259 ---------------------------
260 -- Set_Jmpbuf_Address_NT --
261 ---------------------------
263 procedure Set_Jmpbuf_Address_NT (Addr : Address) is
265 NT_TSD.Jmpbuf_Address := Addr;
266 end Set_Jmpbuf_Address_NT;
268 procedure Set_Jmpbuf_Address_Soft (Addr : Address) is
270 Set_Jmpbuf_Address (Addr);
271 end Set_Jmpbuf_Address_Soft;
273 ---------------------------
274 -- Set_Sec_Stack_Addr_NT --
275 ---------------------------
277 procedure Set_Sec_Stack_Addr_NT (Addr : Address) is
279 NT_TSD.Sec_Stack_Addr := Addr;
280 end Set_Sec_Stack_Addr_NT;
282 -----------------------------
283 -- Set_Sec_Stack_Addr_Soft --
284 -----------------------------
286 procedure Set_Sec_Stack_Addr_Soft (Addr : Address) is
288 Set_Sec_Stack_Addr (Addr);
289 end Set_Sec_Stack_Addr_Soft;
295 procedure Task_Lock_NT is
304 function Task_Name_NT return String is
309 -------------------------
310 -- Task_Termination_NT --
311 -------------------------
313 procedure Task_Termination_NT (Excep : EO) is
314 pragma Warnings (Off, Excep);
317 end Task_Termination_NT;
323 procedure Task_Unlock_NT is
328 -------------------------
329 -- Update_Exception_NT --
330 -------------------------
332 procedure Update_Exception_NT (X : EO := Current_Target_Exception) is
334 Ada.Exceptions.Save_Occurrence (NT_TSD.Current_Excep, X);
335 end Update_Exception_NT;
337 end System.Soft_Links;