1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . S O F T _ L I N K S --
11 -- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- As a special exception, if other files instantiate generics from this --
25 -- unit, or you link this unit with other files to produce an executable, --
26 -- this unit does not by itself cause the resulting executable to be --
27 -- covered by the GNU General Public License. This exception does not --
28 -- however invalidate any other reasons why the executable file might be --
29 -- covered by the GNU Public License. --
31 -- GNAT was originally developed by the GNAT team at New York University. --
32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
34 ------------------------------------------------------------------------------
37 -- We must turn polling off for this unit, because otherwise we get
38 -- an infinite loop from the code within the Poll routine itself.
40 with System.Machine_State_Operations; use System.Machine_State_Operations;
41 -- Used for Create_TSD, Destroy_TSD
43 with System.Parameters;
44 -- Used for Sec_Stack_Ratio
46 with System.Secondary_Stack;
48 package body System.Soft_Links is
50 package SST renames System.Secondary_Stack;
52 -- Allocate an exception stack for the main program to use.
53 -- We make sure that the stack has maximum alignment. Some systems require
54 -- this (e.g. Sun), and in any case it is a good idea for efficiency.
56 NT_Exc_Stack : array (0 .. 8192) of aliased Character;
57 for NT_Exc_Stack'Alignment use Standard'Maximum_Alignment;
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
88 ---------------------------
89 -- Check_Abort_Status_NT --
90 ---------------------------
92 function Check_Abort_Status_NT return Integer is
94 return Boolean'Pos (False);
95 end Check_Abort_Status_NT;
97 ------------------------
98 -- Complete_Master_NT --
99 ------------------------
101 procedure Complete_Master_NT is
104 end Complete_Master_NT;
110 procedure Create_TSD (New_TSD : in out TSD) is
111 use type Parameters.Size_Type;
113 SS_Ratio_Dynamic : constant Boolean :=
114 Parameters.Sec_Stack_Ratio = Parameters.Dynamic;
117 if SS_Ratio_Dynamic then
119 (New_TSD.Sec_Stack_Addr, SST.Default_Secondary_Stack_Size);
122 New_TSD.Machine_State_Addr :=
124 (System.Machine_State_Operations.Allocate_Machine_State);
127 -----------------------
128 -- Current_Master_NT --
129 -----------------------
131 function Current_Master_NT return Integer is
134 end Current_Master_NT;
140 procedure Destroy_TSD (Old_TSD : in out TSD) is
142 SST.SS_Free (Old_TSD.Sec_Stack_Addr);
143 System.Machine_State_Operations.Free_Machine_State
144 (Machine_State (Old_TSD.Machine_State_Addr));
147 ---------------------
148 -- Enter_Master_NT --
149 ---------------------
151 procedure Enter_Master_NT is
156 --------------------------
157 -- Get_Current_Excep_NT --
158 --------------------------
160 function Get_Current_Excep_NT return EOA is
162 return NT_TSD.Current_Excep'Access;
163 end Get_Current_Excep_NT;
165 ---------------------------
166 -- Get_Exc_Stack_Addr_NT --
167 ---------------------------
169 function Get_Exc_Stack_Addr_NT return Address is
171 return NT_TSD.Exc_Stack_Addr;
172 end Get_Exc_Stack_Addr_NT;
174 -----------------------------
175 -- Get_Exc_Stack_Addr_Soft --
176 -----------------------------
178 function Get_Exc_Stack_Addr_Soft return Address is
180 return Get_Exc_Stack_Addr.all;
181 end Get_Exc_Stack_Addr_Soft;
183 ------------------------
184 -- Get_GNAT_Exception --
185 ------------------------
187 function Get_GNAT_Exception return Ada.Exceptions.Exception_Id is
189 return Ada.Exceptions.Exception_Identity (Get_Current_Excep.all.all);
190 end Get_GNAT_Exception;
192 ---------------------------
193 -- Get_Jmpbuf_Address_NT --
194 ---------------------------
196 function Get_Jmpbuf_Address_NT return Address is
198 return NT_TSD.Jmpbuf_Address;
199 end Get_Jmpbuf_Address_NT;
201 -----------------------------
202 -- Get_Jmpbuf_Address_Soft --
203 -----------------------------
205 function Get_Jmpbuf_Address_Soft return Address is
207 return Get_Jmpbuf_Address.all;
208 end Get_Jmpbuf_Address_Soft;
210 -------------------------------
211 -- Get_Machine_State_Addr_NT --
212 -------------------------------
214 function Get_Machine_State_Addr_NT return Address is
216 return NT_TSD.Machine_State_Addr;
217 end Get_Machine_State_Addr_NT;
219 ---------------------------------
220 -- Get_Machine_State_Addr_Soft --
221 ---------------------------------
223 function Get_Machine_State_Addr_Soft return Address is
225 return Get_Machine_State_Addr.all;
226 end Get_Machine_State_Addr_Soft;
228 ---------------------------
229 -- Get_Sec_Stack_Addr_NT --
230 ---------------------------
232 function Get_Sec_Stack_Addr_NT return Address is
234 return NT_TSD.Sec_Stack_Addr;
235 end Get_Sec_Stack_Addr_NT;
237 -----------------------------
238 -- Get_Sec_Stack_Addr_Soft --
239 -----------------------------
241 function Get_Sec_Stack_Addr_Soft return Address is
243 return Get_Sec_Stack_Addr.all;
244 end Get_Sec_Stack_Addr_Soft;
246 -----------------------
247 -- Get_Stack_Info_NT --
248 -----------------------
250 function Get_Stack_Info_NT return Stack_Checking.Stack_Access is
252 return NT_TSD.Pri_Stack_Info'Access;
253 end Get_Stack_Info_NT;
259 procedure Null_Adafinal is
264 ---------------------------
265 -- Set_Exc_Stack_Addr_NT --
266 ---------------------------
268 procedure Set_Exc_Stack_Addr_NT (Self_ID : Address; Addr : Address) is
269 pragma Warnings (Off, Self_ID);
272 NT_TSD.Exc_Stack_Addr := Addr;
273 end Set_Exc_Stack_Addr_NT;
275 -----------------------------
276 -- Set_Exc_Stack_Addr_Soft --
277 -----------------------------
279 procedure Set_Exc_Stack_Addr_Soft (Self_ID : Address; Addr : Address) is
281 Set_Exc_Stack_Addr (Self_ID, Addr);
282 end Set_Exc_Stack_Addr_Soft;
284 ---------------------------
285 -- Set_Jmpbuf_Address_NT --
286 ---------------------------
288 procedure Set_Jmpbuf_Address_NT (Addr : Address) is
290 NT_TSD.Jmpbuf_Address := Addr;
291 end Set_Jmpbuf_Address_NT;
293 procedure Set_Jmpbuf_Address_Soft (Addr : Address) is
295 Set_Jmpbuf_Address (Addr);
296 end Set_Jmpbuf_Address_Soft;
298 -------------------------------
299 -- Set_Machine_State_Addr_NT --
300 -------------------------------
302 procedure Set_Machine_State_Addr_NT (Addr : Address) is
304 NT_TSD.Machine_State_Addr := Addr;
305 end Set_Machine_State_Addr_NT;
307 ---------------------------------
308 -- Set_Machine_State_Addr_Soft --
309 ---------------------------------
311 procedure Set_Machine_State_Addr_Soft (Addr : Address) is
313 Set_Machine_State_Addr (Addr);
314 end Set_Machine_State_Addr_Soft;
316 ---------------------------
317 -- Set_Sec_Stack_Addr_NT --
318 ---------------------------
320 procedure Set_Sec_Stack_Addr_NT (Addr : Address) is
322 NT_TSD.Sec_Stack_Addr := Addr;
323 end Set_Sec_Stack_Addr_NT;
325 -----------------------------
326 -- Set_Sec_Stack_Addr_Soft --
327 -----------------------------
329 procedure Set_Sec_Stack_Addr_Soft (Addr : Address) is
331 Set_Sec_Stack_Addr (Addr);
332 end Set_Sec_Stack_Addr_Soft;
338 procedure Task_Lock_NT is
347 procedure Task_Unlock_NT is
352 -------------------------
353 -- Update_Exception_NT --
354 -------------------------
356 procedure Update_Exception_NT (X : EO := Current_Target_Exception) is
358 Ada.Exceptions.Save_Occurrence (NT_TSD.Current_Excep, X);
359 end Update_Exception_NT;
365 function Task_Name_NT return String is
370 -------------------------
371 -- Package Elaboration --
372 -------------------------
375 NT_TSD.Exc_Stack_Addr := NT_Exc_Stack (8192)'Address;
376 Ada.Exceptions.Save_Occurrence
377 (NT_TSD.Current_Excep, Ada.Exceptions.Null_Occurrence);
379 end System.Soft_Links;