gcc/ada/5kvxwork.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                 GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS              --
   4 --                                                                          --
   5 --                        S Y S T E M . V X W O R K S                       --
   6 --                                                                          --
   7 --                                   S p e c                                --
   8 --                                                                          --
   9 --                             $Revision: 1.2 $
  10 --                                                                          --
  11 --            Copyright (C) 1998-2001 Free Software Foundation              --
  12 --                                                                          --
  13 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNARL was developed by the GNARL team at Florida State University. It is --
  32 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
  33 -- State University (http://www.gnat.com).                                  --
  34 --                                                                          --
  35 ------------------------------------------------------------------------------
  36
  37 --  This is the M68K VxWorks version of this package.
  38
  39 with Interfaces.C;
  40
  41 package System.VxWorks is
  42    pragma Preelaborate (System.VxWorks);
  43
  44    package IC renames Interfaces.C;
  45
  46    --  Define enough of a Wind Task Control Block in order to
  47    --  obtain the inherited priority.  When porting this to
  48    --  different versions of VxWorks (this is based on 5.3[.1]),
  49    --  be sure to look at the definition for WIND_TCB located
  50    --  in $WIND_BASE/target/h/taskLib.h
  51
  52    type Wind_Fill_1 is array (0 .. 16#3F#) of IC.unsigned_char;
  53    type Wind_Fill_2 is array (16#48# .. 16#107#) of IC.unsigned_char;
  54
  55    type Wind_TCB is record
  56       Fill_1          : Wind_Fill_1; -- 0x00 - 0x3f
  57       Priority        : IC.int;  -- 0x40 - 0x43, current (inherited) priority
  58       Normal_Priority : IC.int;  -- 0x44 - 0x47, base priority
  59       Fill_2          : Wind_Fill_2; -- 0x48 - 0x107
  60       spare1          : Address;  -- 0x108 - 0x10b
  61       spare2          : Address;  -- 0x10c - 0x10f
  62       spare3          : Address;  -- 0x110 - 0x113
  63       spare4          : Address;  -- 0x114 - 0x117
  64    end record;
  65    type Wind_TCB_Ptr is access Wind_TCB;
  66
  67    --  Floating point context record.  68K version
  68
  69    FP_NUM_DREGS : constant := 8;
  70    FP_STATE_FRAME_SIZE : constant := 216;
  71
  72    type DOUBLEX is array (1 .. 12) of Interfaces.Unsigned_8;
  73    pragma Pack (DOUBLEX);
  74    for DOUBLEX'Size use 12 * 8;
  75
  76    type DOUBLEX_Array is array (1 .. FP_NUM_DREGS) of DOUBLEX;
  77    pragma Pack (DOUBLEX_Array);
  78    for DOUBLEX_Array'Size use FP_NUM_DREGS * 12 * 8;
  79
  80    type FPREG_SET is record
  81       fpcr  : IC.int;
  82       fpsr  : IC.int;
  83       fpiar : IC.int;
  84       fpx   : DOUBLEX_Array;
  85    end record;
  86
  87    type Fp_State_Frame_Array is array (1 .. FP_STATE_FRAME_SIZE) of IC.char;
  88    pragma Pack (Fp_State_Frame_Array);
  89    for Fp_State_Frame_Array'Size use 8 * FP_STATE_FRAME_SIZE;
  90
  91    type FP_CONTEXT is record
  92       fpRegSet   : FPREG_SET;
  93       stateFrame : Fp_State_Frame_Array;
  94    end record;
  95    pragma Convention (C, FP_CONTEXT);
  96
  97    Num_HW_Interrupts : constant := 256;
  98    --  Number of entries in the hardware interrupt vector table
  99
 100    --  VxWorks 5.3 and 5.4 version
 101    type TASK_DESC is record
 102       td_id           : IC.int;   --  task id
 103       td_name         : Address;  --  name of task
 104       td_priority     : IC.int;   --  task priority
 105       td_status       : IC.int;   --  task status
 106       td_options      : IC.int;   --  task option bits (see below)
 107       td_entry        : Address;  --  original entry point of task
 108       td_sp           : Address;  --  saved stack pointer
 109       td_pStackBase   : Address;  --  the bottom of the stack
 110       td_pStackLimit  : Address;  --  the effective end of the stack
 111       td_pStackEnd    : Address;  --  the actual end of the stack
 112       td_stackSize    : IC.int;   --  size of stack in bytes
 113       td_stackCurrent : IC.int;   --  current stack usage in bytes
 114       td_stackHigh    : IC.int;   --  maximum stack usage in bytes
 115       td_stackMargin  : IC.int;   --  current stack margin in bytes
 116       td_errorStatus  : IC.int;   --  most recent task error status
 117       td_delay        : IC.int;   --  delay/timeout ticks
 118    end record;
 119    pragma Convention (C, TASK_DESC);
 120
 121 end System.VxWorks;