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------------------------------------------------------------------------------
-- --
-- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . V X W O R K S --
-- --
-- S p e c --
-- --
-- $Revision: 1.3 $ --
-- --
-- Copyright (C) 1998-2001 Free Software Foundation --
-- --
-- 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. It is --
-- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
-- State University (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
-- This is the Alpha VxWorks version of this package.
with Interfaces.C;
package System.VxWorks is
pragma Preelaborate (System.VxWorks);
package IC renames Interfaces.C;
-- Define enough of a Wind Task Control Block in order to
-- obtain the inherited priority. When porting this to
-- different versions of VxWorks (this is based on 5.3[.1]),
-- be sure to look at the definition for WIND_TCB located
-- in $WIND_BASE/target/h/taskLib.h
type Wind_Fill_1 is array (0 .. 16#77#) of IC.unsigned_char;
type Wind_Fill_2 is array (16#80# .. 16#1c7#) of IC.unsigned_char;
type Wind_Fill_3 is array (16#1d8# .. 16#777#) of IC.unsigned_char;
type Wind_TCB is record
Fill_1 : Wind_Fill_1; -- 0x00 - 0x77
Priority : IC.int; -- 0x78 - 0x7b, current (inherited) priority
Normal_Priority : IC.int; -- 0x7c - 0x7f, base priority
Fill_2 : Wind_Fill_2; -- 0x80 - 0x1c7
spare1 : Address; -- 0x1c8 - 0x1cb
spare2 : Address; -- 0x1cc - 0x1cf
spare3 : Address; -- 0x1d0 - 0x1d3
spare4 : Address; -- 0x1d4 - 0x1d7
-- Fill_3 is much smaller on the board runtime, but the larger size
-- below keeps this record compatible with vxsim.
Fill_3 : Wind_Fill_3; -- 0x1d8 - 0x777
end record;
type Wind_TCB_Ptr is access Wind_TCB;
-- Floating point context record. Alpha version
FP_NUM_DREGS : constant := 32;
type Fpx_Array is array (1 .. FP_NUM_DREGS) of IC.double;
type FP_CONTEXT is record
fpx : Fpx_Array;
fpcsr : IC.long;
end record;
pragma Convention (C, FP_CONTEXT);
-- Number of entries in hardware interrupt vector table. Value of
-- 0 disables hardware interrupt handling until it can be tested
Num_HW_Interrupts : constant := 0;
-- VxWorks 5.3 and 5.4 version
type TASK_DESC is record
td_id : IC.int; -- task id
td_name : Address; -- name of task
td_priority : IC.int; -- task priority
td_status : IC.int; -- task status
td_options : IC.int; -- task option bits (see below)
td_entry : Address; -- original entry point of task
td_sp : Address; -- saved stack pointer
td_pStackBase : Address; -- the bottom of the stack
td_pStackLimit : Address; -- the effective end of the stack
td_pStackEnd : Address; -- the actual end of the stack
td_stackSize : IC.int; -- size of stack in bytes
td_stackCurrent : IC.int; -- current stack usage in bytes
td_stackHigh : IC.int; -- maximum stack usage in bytes
td_stackMargin : IC.int; -- current stack margin in bytes
td_errorStatus : IC.int; -- most recent task error status
td_delay : IC.int; -- delay/timeout ticks
end record;
pragma Convention (C, TASK_DESC);
end System.VxWorks;
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