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