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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                    S Y S T E M . S O F T _ L I N K S                     --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1992-2009, 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 3,  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.                                     --
--                                                                          --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception,   --
-- version 3.1, as published by the Free Software Foundation.               --
--                                                                          --
-- You should have received a copy of the GNU General Public License and    --
-- a copy of the GCC Runtime Library Exception along with this program;     --
-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
-- <http://www.gnu.org/licenses/>.                                          --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------
 
pragma Compiler_Unit;
 
pragma Polling (Off);
--  We must turn polling off for this unit, because otherwise we get an
--  infinite loop from the code within the Poll routine itself.
 
with System.Parameters;
 
pragma Warnings (Off);
--  Disable warnings since System.Secondary_Stack is currently not Preelaborate
with System.Secondary_Stack;
pragma Warnings (On);
 
package body System.Soft_Links is
 
   package SST renames System.Secondary_Stack;
 
   NT_Exc_Stack : array (0 .. 8192) of aliased Character;
   for NT_Exc_Stack'Alignment use Standard'Maximum_Alignment;
   --  Allocate an exception stack for the main program to use.
   --  This is currently only used under VMS.
 
   NT_TSD : TSD;
   --  Note: we rely on the default initialization of NT_TSD
 
   --------------------
   -- Abort_Defer_NT --
   --------------------
 
   procedure Abort_Defer_NT is
   begin
      null;
   end Abort_Defer_NT;
 
   ----------------------
   -- Abort_Handler_NT --
   ----------------------
 
   procedure Abort_Handler_NT is
   begin
      null;
   end Abort_Handler_NT;
 
   ----------------------
   -- Abort_Undefer_NT --
   ----------------------
 
   procedure Abort_Undefer_NT is
   begin
      null;
   end Abort_Undefer_NT;
 
   -----------------
   -- Adafinal_NT --
   -----------------
 
   procedure Adafinal_NT is
   begin
      --  Handle normal task termination by the environment task, but only
      --  for the normal task termination. In the case of Abnormal and
      --  Unhandled_Exception they must have been handled before, and the
      --  task termination soft link must have been changed so the task
      --  termination routine is not executed twice.
 
      Task_Termination_Handler.all (Ada.Exceptions.Null_Occurrence);
 
      --  Finalize the global list for controlled objects if needed
 
      Finalize_Global_List.all;
   end Adafinal_NT;
 
   ---------------------------
   -- Check_Abort_Status_NT --
   ---------------------------
 
   function Check_Abort_Status_NT return Integer is
   begin
      return Boolean'Pos (False);
   end Check_Abort_Status_NT;
 
   ------------------------
   -- Complete_Master_NT --
   ------------------------
 
   procedure Complete_Master_NT is
   begin
      null;
   end Complete_Master_NT;
 
   ----------------
   -- Create_TSD --
   ----------------
 
   procedure Create_TSD (New_TSD : in out TSD) is
      use type Parameters.Size_Type;
 
      SS_Ratio_Dynamic : constant Boolean :=
                           Parameters.Sec_Stack_Ratio = Parameters.Dynamic;
 
   begin
      if SS_Ratio_Dynamic then
         SST.SS_Init
           (New_TSD.Sec_Stack_Addr, SST.Default_Secondary_Stack_Size);
      end if;
   end Create_TSD;
 
   -----------------------
   -- Current_Master_NT --
   -----------------------
 
   function Current_Master_NT return Integer is
   begin
      return 0;
   end Current_Master_NT;
 
   -----------------
   -- Destroy_TSD --
   -----------------
 
   procedure Destroy_TSD (Old_TSD : in out TSD) is
   begin
      SST.SS_Free (Old_TSD.Sec_Stack_Addr);
   end Destroy_TSD;
 
   ---------------------
   -- Enter_Master_NT --
   ---------------------
 
   procedure Enter_Master_NT is
   begin
      null;
   end Enter_Master_NT;
 
   --------------------------
   -- Get_Current_Excep_NT --
   --------------------------
 
   function Get_Current_Excep_NT return EOA is
   begin
      return NT_TSD.Current_Excep'Access;
   end Get_Current_Excep_NT;
 
   ---------------------------
   -- Get_Exc_Stack_Addr_NT --
   ---------------------------
 
   function Get_Exc_Stack_Addr_NT return Address is
   begin
      return NT_Exc_Stack (NT_Exc_Stack'Last)'Address;
   end Get_Exc_Stack_Addr_NT;
 
   -----------------------------
   -- Get_Exc_Stack_Addr_Soft --
   -----------------------------
 
   function Get_Exc_Stack_Addr_Soft return Address is
   begin
      return Get_Exc_Stack_Addr.all;
   end Get_Exc_Stack_Addr_Soft;
 
   ------------------------
   -- Get_GNAT_Exception --
   ------------------------
 
   function Get_GNAT_Exception return Ada.Exceptions.Exception_Id is
   begin
      return Ada.Exceptions.Exception_Identity (Get_Current_Excep.all.all);
   end Get_GNAT_Exception;
 
   ---------------------------
   -- Get_Jmpbuf_Address_NT --
   ---------------------------
 
   function Get_Jmpbuf_Address_NT return  Address is
   begin
      return NT_TSD.Jmpbuf_Address;
   end Get_Jmpbuf_Address_NT;
 
   -----------------------------
   -- Get_Jmpbuf_Address_Soft --
   -----------------------------
 
   function Get_Jmpbuf_Address_Soft return  Address is
   begin
      return Get_Jmpbuf_Address.all;
   end Get_Jmpbuf_Address_Soft;
 
   ---------------------------
   -- Get_Sec_Stack_Addr_NT --
   ---------------------------
 
   function Get_Sec_Stack_Addr_NT return  Address is
   begin
      return NT_TSD.Sec_Stack_Addr;
   end Get_Sec_Stack_Addr_NT;
 
   -----------------------------
   -- Get_Sec_Stack_Addr_Soft --
   -----------------------------
 
   function Get_Sec_Stack_Addr_Soft return  Address is
   begin
      return Get_Sec_Stack_Addr.all;
   end Get_Sec_Stack_Addr_Soft;
 
   -----------------------
   -- Get_Stack_Info_NT --
   -----------------------
 
   function Get_Stack_Info_NT return Stack_Checking.Stack_Access is
   begin
      return NT_TSD.Pri_Stack_Info'Access;
   end Get_Stack_Info_NT;
 
   -------------------------------
   -- Null_Finalize_Global_List --
   -------------------------------
 
   procedure Null_Finalize_Global_List is
   begin
      null;
   end Null_Finalize_Global_List;
 
   ---------------------------
   -- Set_Jmpbuf_Address_NT --
   ---------------------------
 
   procedure Set_Jmpbuf_Address_NT (Addr : Address) is
   begin
      NT_TSD.Jmpbuf_Address := Addr;
   end Set_Jmpbuf_Address_NT;
 
   procedure Set_Jmpbuf_Address_Soft (Addr : Address) is
   begin
      Set_Jmpbuf_Address (Addr);
   end Set_Jmpbuf_Address_Soft;
 
   ---------------------------
   -- Set_Sec_Stack_Addr_NT --
   ---------------------------
 
   procedure Set_Sec_Stack_Addr_NT (Addr : Address) is
   begin
      NT_TSD.Sec_Stack_Addr := Addr;
   end Set_Sec_Stack_Addr_NT;
 
   -----------------------------
   -- Set_Sec_Stack_Addr_Soft --
   -----------------------------
 
   procedure Set_Sec_Stack_Addr_Soft (Addr : Address) is
   begin
      Set_Sec_Stack_Addr (Addr);
   end Set_Sec_Stack_Addr_Soft;
 
   ------------------
   -- Task_Lock_NT --
   ------------------
 
   procedure Task_Lock_NT is
   begin
      null;
   end Task_Lock_NT;
 
   ------------------
   -- Task_Name_NT --
   -------------------
 
   function Task_Name_NT return String is
   begin
      return "main_task";
   end Task_Name_NT;
 
   -------------------------
   -- Task_Termination_NT --
   -------------------------
 
   procedure Task_Termination_NT (Excep : EO) is
      pragma Unreferenced (Excep);
   begin
      null;
   end Task_Termination_NT;
 
   --------------------
   -- Task_Unlock_NT --
   --------------------
 
   procedure Task_Unlock_NT is
   begin
      null;
   end Task_Unlock_NT;
 
   -------------------------
   -- Update_Exception_NT --
   -------------------------
 
   procedure Update_Exception_NT (X : EO := Current_Target_Exception) is
   begin
      Ada.Exceptions.Save_Occurrence (NT_TSD.Current_Excep, X);
   end Update_Exception_NT;
 
end System.Soft_Links;

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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [ada/] [s-soflin.adb] - Blame information for rev 311

Line No.	Rev	Author	Line
1	281	jeremybenn	`------------------------------------------------------------------------------`
2			`-- --`
3			`-- GNAT COMPILER COMPONENTS --`
4			`-- --`
5			`-- S Y S T E M . S O F T _ L I N K S --`
6			`-- --`
7			`-- B o d y --`
8			`-- --`
9			`-- Copyright (C) 1992-2009, Free Software Foundation, Inc. --`
10			`-- --`
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 3, 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. --`
17			`-- --`
18			`-- As a special exception under Section 7 of GPL version 3, you are granted --`
19			`-- additional permissions described in the GCC Runtime Library Exception, --`
20			`-- version 3.1, as published by the Free Software Foundation. --`
21			`-- --`
22			`-- You should have received a copy of the GNU General Public License and --`
23			`-- a copy of the GCC Runtime Library Exception along with this program; --`
24			`-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --`
25			`-- <http://www.gnu.org/licenses/>. --`
26			`-- --`
27			`-- GNAT was originally developed by the GNAT team at New York University. --`
28			`-- Extensive contributions were provided by Ada Core Technologies Inc. --`
29			`-- --`
30			`------------------------------------------------------------------------------`
31
32			`pragma Compiler_Unit;`
33
34			`pragma Polling (Off);`
35			`-- We must turn polling off for this unit, because otherwise we get an`
36			`-- infinite loop from the code within the Poll routine itself.`
37
38			`with System.Parameters;`
39
40			`pragma Warnings (Off);`
41			`-- Disable warnings since System.Secondary_Stack is currently not Preelaborate`
42			`with System.Secondary_Stack;`
43			`pragma Warnings (On);`
44
45			`package body System.Soft_Links is`
46
47			`package SST renames System.Secondary_Stack;`
48
49			`NT_Exc_Stack : array (0 .. 8192) of aliased Character;`
50			`for NT_Exc_Stack'Alignment use Standard'Maximum_Alignment;`
51			`-- Allocate an exception stack for the main program to use.`
52			`-- This is currently only used under VMS.`
53
54			`NT_TSD : TSD;`
55			`-- Note: we rely on the default initialization of NT_TSD`
56
57			`--------------------`
58			`-- Abort_Defer_NT --`
59			`--------------------`
60
61			`procedure Abort_Defer_NT is`
62			`begin`
63			`null;`
64			`end Abort_Defer_NT;`
65
66			`----------------------`
67			`-- Abort_Handler_NT --`
68			`----------------------`
69
70			`procedure Abort_Handler_NT is`
71			`begin`
72			`null;`
73			`end Abort_Handler_NT;`
74
75			`----------------------`
76			`-- Abort_Undefer_NT --`
77			`----------------------`
78
79			`procedure Abort_Undefer_NT is`
80			`begin`
81			`null;`
82			`end Abort_Undefer_NT;`
83
84			`-----------------`
85			`-- Adafinal_NT --`
86			`-----------------`
87
88			`procedure Adafinal_NT is`
89			`begin`
90			`-- Handle normal task termination by the environment task, but only`
91			`-- for the normal task termination. In the case of Abnormal and`
92			`-- Unhandled_Exception they must have been handled before, and the`
93			`-- task termination soft link must have been changed so the task`
94			`-- termination routine is not executed twice.`
95
96			`Task_Termination_Handler.all (Ada.Exceptions.Null_Occurrence);`
97
98			`-- Finalize the global list for controlled objects if needed`
99
100			`Finalize_Global_List.all;`
101			`end Adafinal_NT;`
102
103			`---------------------------`
104			`-- Check_Abort_Status_NT --`
105			`---------------------------`
106
107			`function Check_Abort_Status_NT return Integer is`
108			`begin`
109			`return Boolean'Pos (False);`
110			`end Check_Abort_Status_NT;`
111
112			`------------------------`
113			`-- Complete_Master_NT --`
114			`------------------------`
115
116			`procedure Complete_Master_NT is`
117			`begin`
118			`null;`
119			`end Complete_Master_NT;`
120
121			`----------------`
122			`-- Create_TSD --`
123			`----------------`
124
125			`procedure Create_TSD (New_TSD : in out TSD) is`
126			`use type Parameters.Size_Type;`
127
128			`SS_Ratio_Dynamic : constant Boolean :=`
129			`Parameters.Sec_Stack_Ratio = Parameters.Dynamic;`
130
131			`begin`
132			`if SS_Ratio_Dynamic then`
133			`SST.SS_Init`
134			`(New_TSD.Sec_Stack_Addr, SST.Default_Secondary_Stack_Size);`
135			`end if;`
136			`end Create_TSD;`
137
138			`-----------------------`
139			`-- Current_Master_NT --`
140			`-----------------------`
141
142			`function Current_Master_NT return Integer is`
143			`begin`
144			`return 0;`
145			`end Current_Master_NT;`
146
147			`-----------------`
148			`-- Destroy_TSD --`
149			`-----------------`
150
151			`procedure Destroy_TSD (Old_TSD : in out TSD) is`
152			`begin`
153			`SST.SS_Free (Old_TSD.Sec_Stack_Addr);`
154			`end Destroy_TSD;`
155
156			`---------------------`
157			`-- Enter_Master_NT --`
158			`---------------------`
159
160			`procedure Enter_Master_NT is`
161			`begin`
162			`null;`
163			`end Enter_Master_NT;`
164
165			`--------------------------`
166			`-- Get_Current_Excep_NT --`
167			`--------------------------`
168
169			`function Get_Current_Excep_NT return EOA is`
170			`begin`
171			`return NT_TSD.Current_Excep'Access;`
172			`end Get_Current_Excep_NT;`
173
174			`---------------------------`
175			`-- Get_Exc_Stack_Addr_NT --`
176			`---------------------------`
177
178			`function Get_Exc_Stack_Addr_NT return Address is`
179			`begin`
180			`return NT_Exc_Stack (NT_Exc_Stack'Last)'Address;`
181			`end Get_Exc_Stack_Addr_NT;`
182
183			`-----------------------------`
184			`-- Get_Exc_Stack_Addr_Soft --`
185			`-----------------------------`
186
187			`function Get_Exc_Stack_Addr_Soft return Address is`
188			`begin`
189			`return Get_Exc_Stack_Addr.all;`
190			`end Get_Exc_Stack_Addr_Soft;`
191
192			`------------------------`
193			`-- Get_GNAT_Exception --`
194			`------------------------`
195
196			`function Get_GNAT_Exception return Ada.Exceptions.Exception_Id is`
197			`begin`
198			`return Ada.Exceptions.Exception_Identity (Get_Current_Excep.all.all);`
199			`end Get_GNAT_Exception;`
200
201			`---------------------------`
202			`-- Get_Jmpbuf_Address_NT --`
203			`---------------------------`
204
205			`function Get_Jmpbuf_Address_NT return Address is`
206			`begin`
207			`return NT_TSD.Jmpbuf_Address;`
208			`end Get_Jmpbuf_Address_NT;`
209
210			`-----------------------------`
211			`-- Get_Jmpbuf_Address_Soft --`
212			`-----------------------------`
213
214			`function Get_Jmpbuf_Address_Soft return Address is`
215			`begin`
216			`return Get_Jmpbuf_Address.all;`
217			`end Get_Jmpbuf_Address_Soft;`
218
219			`---------------------------`
220			`-- Get_Sec_Stack_Addr_NT --`
221			`---------------------------`
222
223			`function Get_Sec_Stack_Addr_NT return Address is`
224			`begin`
225			`return NT_TSD.Sec_Stack_Addr;`
226			`end Get_Sec_Stack_Addr_NT;`
227
228			`-----------------------------`
229			`-- Get_Sec_Stack_Addr_Soft --`
230			`-----------------------------`
231
232			`function Get_Sec_Stack_Addr_Soft return Address is`
233			`begin`
234			`return Get_Sec_Stack_Addr.all;`
235			`end Get_Sec_Stack_Addr_Soft;`
236
237			`-----------------------`
238			`-- Get_Stack_Info_NT --`
239			`-----------------------`
240
241			`function Get_Stack_Info_NT return Stack_Checking.Stack_Access is`
242			`begin`
243			`return NT_TSD.Pri_Stack_Info'Access;`
244			`end Get_Stack_Info_NT;`
245
246			`-------------------------------`
247			`-- Null_Finalize_Global_List --`
248			`-------------------------------`
249
250			`procedure Null_Finalize_Global_List is`
251			`begin`
252			`null;`
253			`end Null_Finalize_Global_List;`
254
255			`---------------------------`
256			`-- Set_Jmpbuf_Address_NT --`
257			`---------------------------`
258
259			`procedure Set_Jmpbuf_Address_NT (Addr : Address) is`
260			`begin`
261			`NT_TSD.Jmpbuf_Address := Addr;`
262			`end Set_Jmpbuf_Address_NT;`
263
264			`procedure Set_Jmpbuf_Address_Soft (Addr : Address) is`
265			`begin`
266			`Set_Jmpbuf_Address (Addr);`
267			`end Set_Jmpbuf_Address_Soft;`
268
269			`---------------------------`
270			`-- Set_Sec_Stack_Addr_NT --`
271			`---------------------------`
272
273			`procedure Set_Sec_Stack_Addr_NT (Addr : Address) is`
274			`begin`
275			`NT_TSD.Sec_Stack_Addr := Addr;`
276			`end Set_Sec_Stack_Addr_NT;`
277
278			`-----------------------------`
279			`-- Set_Sec_Stack_Addr_Soft --`
280			`-----------------------------`
281
282			`procedure Set_Sec_Stack_Addr_Soft (Addr : Address) is`
283			`begin`
284			`Set_Sec_Stack_Addr (Addr);`
285			`end Set_Sec_Stack_Addr_Soft;`
286
287			`------------------`
288			`-- Task_Lock_NT --`
289			`------------------`
290
291			`procedure Task_Lock_NT is`
292			`begin`
293			`null;`
294			`end Task_Lock_NT;`
295
296			`------------------`
297			`-- Task_Name_NT --`
298			`-------------------`
299
300			`function Task_Name_NT return String is`
301			`begin`
302			`return "main_task";`
303			`end Task_Name_NT;`
304
305			`-------------------------`
306			`-- Task_Termination_NT --`
307			`-------------------------`
308
309			`procedure Task_Termination_NT (Excep : EO) is`
310			`pragma Unreferenced (Excep);`
311			`begin`
312			`null;`
313			`end Task_Termination_NT;`
314
315			`--------------------`
316			`-- Task_Unlock_NT --`
317			`--------------------`
318
319			`procedure Task_Unlock_NT is`
320			`begin`
321			`null;`
322			`end Task_Unlock_NT;`
323
324			`-------------------------`
325			`-- Update_Exception_NT --`
326			`-------------------------`
327
328			`procedure Update_Exception_NT (X : EO := Current_Target_Exception) is`
329			`begin`
330			`Ada.Exceptions.Save_Occurrence (NT_TSD.Current_Excep, X);`
331			`end Update_Exception_NT;`
332
333			`end System.Soft_Links;`