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Diffstat (limited to 'gcc/ada/s-osinte-vms.adb')
| -rw-r--r-- | gcc/ada/s-osinte-vms.adb | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/gcc/ada/s-osinte-vms.adb b/gcc/ada/s-osinte-vms.adb new file mode 100644 index 00000000000..0b806daa809 --- /dev/null +++ b/gcc/ada/s-osinte-vms.adb @@ -0,0 +1,78 @@ +------------------------------------------------------------------------------ +-- -- +-- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS -- +-- -- +-- S Y S T E M . O S _ I N T E R F A C E -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1991-1994, Florida State University -- +-- Copyright (C) 1995-2003, Ada Core Technologies -- +-- -- +-- GNARL is free software; you can redistribute it and/or modify it under -- +-- terms of the GNU General Public License as published by the Free Soft- -- +-- ware Foundation; either version 2, or (at your option) any later ver- -- +-- sion. GNARL is distributed in the hope that it will be useful, but WITH- -- +-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- +-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNARL; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNARL was developed by the GNARL team at Florida State University. -- +-- Extensive contributions were provided by Ada Core Technologies, Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This is a OpenVMS/Alpha version of this package. + +-- This package encapsulates all direct interfaces to OS services +-- that are needed by children of System. + +pragma Polling (Off); +-- Turn off polling, we do not want ATC polling to take place during +-- tasking operations. It causes infinite loops and other problems. + +with Interfaces.C; use Interfaces.C; +with System.Machine_Code; use System.Machine_Code; + +package body System.OS_Interface is + + ------------------ + -- pthread_self -- + ------------------ + + function pthread_self return pthread_t is + use ASCII; + Self : pthread_t; + + begin + Asm ("call_pal 0x9e" & LF & HT & + "bis $31, $0, %0", + Outputs => pthread_t'Asm_Output ("=r", Self), + Clobber => "$0"); + return Self; + end pthread_self; + + ----------------- + -- sched_yield -- + ----------------- + + function sched_yield return int is + procedure sched_yield_base; + pragma Import (C, sched_yield_base, "PTHREAD_YIELD_NP"); + + begin + sched_yield_base; + return 0; + end sched_yield; + +end System.OS_Interface; |