Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 89 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/ada/a-exetim.ads b/gcc-4.9/gcc/ada/a-exetim.ads
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index 000000000..1dc5f61f9
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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                   A D A . E X E C U T I O N _ T I M E                    --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT.  In accordance with the copyright of that document, you can freely --
+-- copy and modify this specification,  provided that if you redistribute a --
+-- modified version,  any changes that you have made are clearly indicated. --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This unit is not implemented in typical GNAT implementations that lie on
+--  top of operating systems, because it is infeasible to implement in such
+--  environments.
+
+--  If a target environment provides appropriate support for this package
+--  then the Unimplemented_Unit pragma should be removed from this spec and
+--  an appropriate body provided.
+
+with Ada.Task_Identification;
+with Ada.Real_Time;
+
+package Ada.Execution_Time is
+   pragma Preelaborate;
+
+   pragma Unimplemented_Unit;
+
+   type CPU_Time is private;
+
+   CPU_Time_First : constant CPU_Time;
+   CPU_Time_Last  : constant CPU_Time;
+   CPU_Time_Unit  : constant := 0.000001;
+   CPU_Tick       : constant Ada.Real_Time.Time_Span;
+
+   function Clock
+     (T : Ada.Task_Identification.Task_Id :=
+            Ada.Task_Identification.Current_Task)
+      return CPU_Time;
+
+   function "+"
+     (Left  : CPU_Time;
+      Right : Ada.Real_Time.Time_Span) return CPU_Time;
+
+   function "+"
+     (Left  : Ada.Real_Time.Time_Span;
+      Right : CPU_Time) return CPU_Time;
+
+   function "-"
+     (Left  : CPU_Time;
+      Right : Ada.Real_Time.Time_Span) return CPU_Time;
+
+   function "-"
+     (Left  : CPU_Time;
+      Right : CPU_Time) return Ada.Real_Time.Time_Span;
+
+   function "<"  (Left, Right : CPU_Time) return Boolean;
+   function "<=" (Left, Right : CPU_Time) return Boolean;
+   function ">"  (Left, Right : CPU_Time) return Boolean;
+   function ">=" (Left, Right : CPU_Time) return Boolean;
+
+   procedure Split
+     (T  : CPU_Time;
+      SC : out Ada.Real_Time.Seconds_Count;
+      TS : out Ada.Real_Time.Time_Span);
+
+   function Time_Of
+      (SC : Ada.Real_Time.Seconds_Count;
+       TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero)
+       return CPU_Time;
+
+   Interrupt_Clocks_Supported          : constant Boolean := False;
+   Separate_Interrupt_Clocks_Supported : constant Boolean := False;
+
+   function Clock_For_Interrupts return CPU_Time;
+
+private
+
+   type CPU_Time is new Ada.Real_Time.Time;
+
+   CPU_Time_First : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_First);
+   CPU_Time_Last  : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_Last);
+
+   CPU_Tick : constant Ada.Real_Time.Time_Span := Ada.Real_Time.Tick;
+
+end Ada.Execution_Time;