File : a-extiin-bb.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- A D A . E X E C U T I O N _ T I M E . I N T E R R U P T S --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2011, 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 -- --
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 -- 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 -- This is the Bare Board version of this package
33
34 with Ada.Unchecked_Conversion;
35
36 with System.BB.Execution_Time;
37 with System.BB.Interrupts;
38 with System.BB.Time;
39
40 package body Ada.Execution_Time.Interrupts with
41 SPARK_Mode => Off
42 is
43
44 package SBET renames System.BB.Execution_Time;
45 package SBI renames System.BB.Interrupts;
46
47 function To_CPU_Time is new Ada.Unchecked_Conversion
48 (System.BB.Time.Time, CPU_Time);
49 -- Function to change the view from System.BB.Time.Time (unsigned 64-bit)
50 -- to CPU_Time (unsigned 64-bit).
51 --
52 -- CPU_Time is derived from Ada.Real_Time.Time which is derived from
53 -- System.BB.Time.Time. So CPU_Time and System.BB.Time.Time are the same
54 -- type, but Ada.Real_Time.Time is private so we don't have visibility.
55
56 function Clock (Interrupt : Ada.Interrupts.Interrupt_ID) return CPU_Time is
57 Execution_Time : constant System.BB.Time.Time :=
58 SBET.Interrupt_Clock (SBI.Interrupt_ID (Interrupt));
59 begin
60 return To_CPU_Time (Execution_Time);
61 end Clock;
62
63 function Supported
64 (Interrupt : Ada.Interrupts.Interrupt_ID) return Boolean is
65 pragma Unreferenced (Interrupt);
66 begin
67 return True;
68 end Supported;
69
70 end Ada.Execution_Time.Interrupts;