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653aef86bc
version. Note that this version now produces executables that are covered by the GPL as opposed to the previous version which was covered by the modified GPL. Also note that the GNAT sources in the stock GCC-4 tree are not under this restriction. A new port based on the sources in GCC-4 will come when I get the time.
108 lines
4.5 KiB
Ada
108 lines
4.5 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
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-- --
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-- S Y S T E M . O S _ I N T E R F A C E --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1991-2005 Free Software Foundation, Inc. --
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-- --
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-- GNARL is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNARL; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNARL was developed by the GNARL team at Florida State University. It is --
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-- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
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-- State University (http://www.gnat.com). --
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-- --
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------------------------------------------------------------------------------
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-- This is the FreeBSD THREADS version of this package
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with Interfaces.C; use Interfaces.C;
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package body System.OS_Interface is
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function Errno return int is
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type int_ptr is access all int;
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function internal_errno return int_ptr;
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pragma Import (C, internal_errno, "__error");
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begin
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return (internal_errno.all);
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end Errno;
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function Get_Stack_Base (thread : pthread_t) return Address is
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pragma Unreferenced (thread);
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begin
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return (0);
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end Get_Stack_Base;
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procedure pthread_init is
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begin
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null;
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end pthread_init;
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-----------------
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-- To_Duration --
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-----------------
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function To_Duration (TS : timespec) return Duration is
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begin
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return Duration (TS.ts_sec) + Duration (TS.ts_nsec) / 10#1#E9;
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end To_Duration;
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-----------------
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-- To_Timespec --
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-----------------
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function To_Timespec (D : Duration) return timespec is
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S : time_t;
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F : Duration;
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begin
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S := time_t (Long_Long_Integer (D));
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F := D - Duration (S);
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-- If F has negative value due to a round-up, adjust for positive F
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-- value.
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if F < 0.0 then S := S - 1; F := F + 1.0; end if;
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return timespec'(ts_sec => S,
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ts_nsec => long (Long_Long_Integer (F * 10#1#E9)));
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end To_Timespec;
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function To_Duration (TV : struct_timeval) return Duration is
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begin
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return Duration (TV.tv_sec) + Duration (TV.tv_usec) / 10#1#E6;
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end To_Duration;
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function To_Timeval (D : Duration) return struct_timeval is
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S : long;
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F : Duration;
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begin
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S := long (Long_Long_Integer (D));
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F := D - Duration (S);
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-- If F has negative value due to a round-up, adjust for positive F
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-- value.
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if F < 0.0 then S := S - 1; F := F + 1.0; end if;
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return struct_timeval'(tv_sec => S,
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tv_usec => long (Long_Long_Integer (F * 10#1#E6)));
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end To_Timeval;
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end System.OS_Interface;
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