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1 294 jeremybenn
-- CD33001.A
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--
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--                             Grant of Unlimited Rights
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--
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--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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--     unlimited rights in the software and documentation contained herein.
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--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
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--     this public release, the Government intends to confer upon all
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--     recipients unlimited rights  equal to those held by the Government.
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--     These rights include rights to use, duplicate, release or disclose the
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--     released technical data and computer software in whole or in part, in
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--     any manner and for any purpose whatsoever, and to have or permit others
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--     to do so.
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--
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--                                    DISCLAIMER
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--
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--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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--     PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--
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-- OBJECTIVE:
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--      Check that Component_Sizes that are a factor of the word
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--      size are supported.
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--
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--      Check that for such Component_Sizes arrays contain no gaps between
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--      components.
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--
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-- TEST DESCRIPTION:
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--      This test defines three array types and specifies their layouts
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--      using representation specifications for the 'Component_Size and
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--      pragma Packs for each.  It then checks that the implied assumptions
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--      about the resulting layout actually can be made.
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--
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-- APPLICABILITY CRITERIA:
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--      All implementations must attempt to compile this test.
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--
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--      For implementations validating against Systems Programming Annex (C):
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--        this test must execute and report PASSED.
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--
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--      For implementations not validating against Annex C:
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--        this test may report compile time errors at one or more points
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--        indicated by "-- ANX-C RQMT", in which case it may be graded as inapplicable.
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--        Otherwise, the test must execute and report PASSED.
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--
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--
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-- CHANGE HISTORY:
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--      22 JUL 95   SAIC   Initial version
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--      07 MAY 96   SAIC   Revised for 2.1
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--      24 AUG 96   SAIC   Additional 2.1 revisions
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--      17 FEB 97   PWB.CTA  Corrected prefix of 'Component_Size to name
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--                           array object instead of array subtype
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--      16 FEB 98   EDS    Modified documentation.
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--!
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----------------------------------------------------------------- CD33001_0
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with System;
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package CD33001_0 is
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  S_Units_per_Word : constant := System.Word_Size/System.Storage_Unit;
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  type Nibble is mod 2**4;
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  type Byte is mod 2**8;
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  type Half_Stuff is array(Natural range <>) of Nibble;
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    for Half_Stuff'Component_Size
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      use System.Word_Size / 2;   -- factor                   -- ANX-C RQMT.
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  pragma Pack(Half_Stuff);                                    -- ANX-C RQMT.
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  type Word_Stuff is array(Natural range <>) of Byte;
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    for Word_Stuff'Component_Size
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      use System.Word_Size;                                   -- ANX-C RQMT.
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  type Address_Calculator is record
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    Item_1 : Nibble;
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    Item_2 : Nibble;
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  end record;
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  for Address_Calculator use record
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    Item_1 at 0 range 0..3;
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    Item_2 at 1 range 0..3;
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  end record;
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  -- given that Item_1 is specified to be at 'Position = 0 and
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  --            Item_2 is specified to be at 'Position = 1
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  -- by definition (13.5.2(2)) abs(Item_2'Address - Item_1'Address) = 1
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end CD33001_0;
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-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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-- there is no package body CD33001_0
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------------------------------------------------------------------- CD33001
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with Report;
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with System.Storage_Elements;
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with CD33001_0;
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procedure CD33001 is
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  use type System.Storage_Elements.Storage_Offset;
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  A_Half   : CD33001_0.Half_Stuff(0..15);
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  A_Word   : CD33001_0.Word_Stuff(0..15);
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  procedure Unexpected( Message : String; Wanted, Got: Integer ) is
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  begin
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    Report.Failed( Message & " Wanted:"
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                   & Integer'Image(Wanted) & " Got:" & Integer'Image(Got) );
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  end Unexpected;
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begin  -- Main test procedure.
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  Report.Test ("CD33001", "Check that Component_Sizes that are factor of " &
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                          "the word size are supported.  Check that for " &
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                          "such Component_Sizes arrays contain no gaps " &
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                          "between components" );
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  if A_Half'Size /= A_Half'Component_Size * 16 then
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    Unexpected("Half word Size",
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               CD33001_0.Half_Stuff'Component_Size * 16,
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               A_Half'Size );
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  end if;
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  if A_Word(1)'Size /= System.Word_Size then
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    Unexpected("Word Size", System.Word_Size, A_Word(1)'Size );
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  end if;
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  Report.Result;
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end CD33001;

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