1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . S O F T _ L I N K S --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2005 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, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, 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. --
-- --
------------------------------------------------------------------------------
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;
-- Used for Sec_Stack_Ratio
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_Unlock_NT --
--------------------
procedure Task_Unlock_NT is
begin
null;
end Task_Unlock_NT;
-------------------------
-- Task_Termination_NT --
-------------------------
procedure Task_Termination_NT (Excep : EO) is
pragma Warnings (Off, Excep);
begin
null;
end Task_Termination_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;
------------------
-- Task_Name_NT --
-------------------
function Task_Name_NT return String is
begin
return "main_task";
end Task_Name_NT;
end System.Soft_Links;
|
