File : s-multip-8641d.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
4 -- --
5 -- S Y S T E M . M U L T I P R O C E S S O R S --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2014, AdaCore --
10 -- --
11 -- GNARL 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. GNARL 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 -- --
19 -- --
20 -- --
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 ------------------------------------------------------------------------------
28
29 with Interfaces; use Interfaces;
30
31 package body System.Multiprocessors is
32
33 -- ePIC's Feature Reporting Register
34 FRR : Unsigned_32;
35 for FRR'Address use 16#f804_1000#;
36 pragma Import (Ada, FRR);
37
38 function Number_Of_CPUs return CPU is
39 NCPUs : CPU;
40 begin
41 NCPUs := CPU (Shift_Right (FRR and 16#00001f00#, 8) + 1);
42 return NCPUs;
43 end Number_Of_CPUs;
44
45 end System.Multiprocessors;