1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
5 -- S Y S T E M . I N T E R R U P T S --
9 -- Copyright (C) 1991-1994, Florida State University --
10 -- Copyright (C) 1995-2010, AdaCore --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 3, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. --
19 -- As a special exception under Section 7 of GPL version 3, you are granted --
20 -- additional permissions described in the GCC Runtime Library Exception, --
21 -- version 3.1, as published by the Free Software Foundation. --
23 -- You should have received a copy of the GNU General Public License and --
24 -- a copy of the GCC Runtime Library Exception along with this program; --
25 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
26 -- <http://www.gnu.org/licenses/>. --
28 -- GNARL was developed by the GNARL team at Florida State University. --
29 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
31 ------------------------------------------------------------------------------
33 -- This version is for systems that do not support interrupts (or signals)
35 package body System.Interrupts is
37 pragma Warnings (Off); -- kill warnings on unreferenced formals
41 -----------------------
42 -- Local Subprograms --
43 -----------------------
45 procedure Unimplemented;
46 -- This procedure raises a Program_Error with an appropriate message
47 -- indicating that an unimplemented feature has been used.
53 procedure Attach_Handler
54 (New_Handler : Parameterless_Handler;
55 Interrupt : Interrupt_ID;
56 Static : Boolean := False)
62 -----------------------------
63 -- Bind_Interrupt_To_Entry --
64 -----------------------------
66 procedure Bind_Interrupt_To_Entry
69 Int_Ref : System.Address)
73 end Bind_Interrupt_To_Entry;
79 procedure Block_Interrupt (Interrupt : Interrupt_ID) is
88 function Current_Handler
89 (Interrupt : Interrupt_ID) return Parameterless_Handler
100 procedure Detach_Handler
101 (Interrupt : Interrupt_ID;
102 Static : Boolean := False)
108 ------------------------------
109 -- Detach_Interrupt_Entries --
110 ------------------------------
112 procedure Detach_Interrupt_Entries (T : Task_Id) is
115 end Detach_Interrupt_Entries;
117 ----------------------
118 -- Exchange_Handler --
119 ----------------------
121 procedure Exchange_Handler
122 (Old_Handler : out Parameterless_Handler;
123 New_Handler : Parameterless_Handler;
124 Interrupt : Interrupt_ID;
125 Static : Boolean := False)
130 end Exchange_Handler;
136 procedure Finalize (Object : in out Static_Interrupt_Protection) is
141 -------------------------------------
142 -- Has_Interrupt_Or_Attach_Handler --
143 -------------------------------------
145 function Has_Interrupt_Or_Attach_Handler
146 (Object : access Dynamic_Interrupt_Protection)
149 pragma Warnings (Off, Object);
153 end Has_Interrupt_Or_Attach_Handler;
155 function Has_Interrupt_Or_Attach_Handler
156 (Object : access Static_Interrupt_Protection)
159 pragma Warnings (Off, Object);
163 end Has_Interrupt_Or_Attach_Handler;
165 ----------------------
166 -- Ignore_Interrupt --
167 ----------------------
169 procedure Ignore_Interrupt (Interrupt : Interrupt_ID) is
172 end Ignore_Interrupt;
174 ----------------------
175 -- Install_Handlers --
176 ----------------------
178 procedure Install_Handlers
179 (Object : access Static_Interrupt_Protection;
180 New_Handlers : New_Handler_Array)
184 end Install_Handlers;
186 ---------------------------------
187 -- Install_Restricted_Handlers --
188 ---------------------------------
190 procedure Install_Restricted_Handlers (Handlers : New_Handler_Array) is
193 end Install_Restricted_Handlers;
199 function Is_Blocked (Interrupt : Interrupt_ID) return Boolean is
205 -----------------------
206 -- Is_Entry_Attached --
207 -----------------------
209 function Is_Entry_Attached (Interrupt : Interrupt_ID) return Boolean is
213 end Is_Entry_Attached;
215 -------------------------
216 -- Is_Handler_Attached --
217 -------------------------
219 function Is_Handler_Attached (Interrupt : Interrupt_ID) return Boolean is
223 end Is_Handler_Attached;
229 function Is_Ignored (Interrupt : Interrupt_ID) return Boolean is
239 function Is_Reserved (Interrupt : Interrupt_ID) return Boolean is
249 function Reference (Interrupt : Interrupt_ID) return System.Address is
252 return Interrupt'Address;
255 --------------------------------
256 -- Register_Interrupt_Handler --
257 --------------------------------
259 procedure Register_Interrupt_Handler
260 (Handler_Addr : System.Address)
264 end Register_Interrupt_Handler;
266 -----------------------
267 -- Unblock_Interrupt --
268 -----------------------
270 procedure Unblock_Interrupt (Interrupt : Interrupt_ID) is
273 end Unblock_Interrupt;
279 function Unblocked_By (Interrupt : Interrupt_ID)
280 return System.Tasking.Task_Id is
286 ------------------------
287 -- Unignore_Interrupt --
288 ------------------------
290 procedure Unignore_Interrupt (Interrupt : Interrupt_ID) is
293 end Unignore_Interrupt;
299 procedure Unimplemented is
301 raise Program_Error with "interrupts/signals not implemented";
304 end System.Interrupts;