-- CD30002.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 the implementation supports Alignments for subtypes and -- objects specified as factors and multiples of the number of storage -- elements per word, unless those values cannot be loaded and stored. -- Check that the largest alignment returned by default is supported. -- -- Check that the implementation supports Alignments supported by the -- target linker for stand-alone library-level objects of statically -- constrained subtypes. -- -- TEST DESCRIPTION: -- This test defines several types and objects, specifying various -- alignments for them (as factors and multiples of the number of -- storage elements per word). It then checks the alignments by -- declaring some objects, and checking that the integer values of -- their addresses is mod the specified alignment. This will not -- prevent false passes where the lucky compiler gets it right by -- chance, but will catch compilers that specifically do not obey -- the alignment clauses. -- -- 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 -- 09 MAY 96 SAIC Strengthened for 2.1 -- 26 FEB 97 PWB.CTA Allowed for unexpected word sizes -- 16 FEB 98 EDS Modified documentation. -- 26 SEP 98 RLB Fixed value on line 130 so check and dec. match. -- 30 OCT 98 RLB Split Multiple_Alignment and revised the -- calculation to work on all targets. -- 18 JAN 99 RLB Repaired again to work on targets where word size -- equals storage unit. --! ----------------------------------------------------------------- CD30002_0 with Impdef; with System.Storage_Elements; package CD30002_0 is S_Units_per_Word : constant := System.Word_Size/System.Storage_Unit; -- Must be 1 or greater. Multiple_Type_Alignment : constant := Integer'Min ( Impdef.Max_Default_Alignment, 2 * S_Units_per_Word ); -- Calculate a reasonable alignment, but not larger than the -- implementation is required to support. Multiple_Object_Alignment : constant := Integer'Min ( Impdef.Max_Linker_Alignment, 2 * S_Units_per_Word ); -- Calculate a reasonable object alignment, but not larger than -- the implementation is required to support. Small_Alignment : constant := Integer'Max ( S_Units_per_Word / 2, 1); -- Calculate a reasonable small alignment, but not less than 1. -- (If S_Units_per_Word = 1, 1/2 => 0 which causes problems -- verifying alignment.) subtype Storage_Element is System.Storage_Elements.Storage_Element; type Some_Stuff is array(1..S_Units_Per_Word) of Storage_Element; for Some_Stuff'Alignment use Impdef.Max_Default_Alignment; -- ANX-C RQMT. Library_Level_Object : Some_Stuff; for Library_Level_Object'Alignment use Impdef.Max_Linker_Alignment; -- ANX-C RQMT. type Quarter is mod 4; -- two bits for Quarter'Alignment use Small_Alignment; -- ANX-C RQMT. type Half is mod 16; -- nibble for Half'Alignment use Multiple_Type_Alignment; -- ANX-C RQMT. type O_Some_Stuff is array(1..S_Units_Per_Word) of Storage_Element; type O_Quarter is mod 4; -- two bits type O_Half is mod 16; -- nibble end CD30002_0; -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- there is no package body CD30002_0 ------------------------------------------------------------------- CD30002 with Report; with Impdef; with CD30002_0; with System.Storage_Elements; procedure CD30002 is My_Stuff : CD30002_0.Some_Stuff; -- Impdef.Max_Default_Alignment My_Quarter : CD30002_0.Quarter; -- CD30002_0.S_Units_per_Word / 2 My_Half : CD30002_0.Half; -- CD30002_0.S_Units_per_Word * 2 Stuff_Object : CD30002_0.O_Some_Stuff; for Stuff_Object'Alignment use Impdef.Max_Default_Alignment; -- ANX-C RQMT. Quarter_Object : CD30002_0.O_Quarter; for Quarter_Object'Alignment use CD30002_0.Small_Alignment; -- ANX-C RQMT. Half_Object : CD30002_0.O_Half; for Half_Object'Alignment use CD30002_0.Multiple_Object_Alignment; -- ANX-C RQMT. subtype IntAdd is System.Storage_Elements.Integer_Address; use type System.Storage_Elements.Integer_Address; function A2I(Value: System.Address) return IntAdd renames System.Storage_Elements.To_Integer; NAC : constant String := " not aligned correctly"; begin -- Main test procedure. Report.Test ("CD30002", "Check that the implementation supports " & "Alignments for subtypes and objects specified " & "as factors and multiples of the number of " & "storage elements per word, unless those values " & "cannot be loaded and stored. Check that the " & "largest alignment returned by default is " & "supported. Check that the implementation " & "supports Alignments supported by the target " & "linker for stand-alone library-level objects " & "of statically constrained subtypes" ); if A2I(CD30002_0.Library_Level_Object'Address) mod Impdef.Max_Linker_Alignment /= 0 then Report.Failed("Library_Level_Object" & NAC); end if; if A2I(My_Stuff'Address) mod Impdef.Max_Default_Alignment /= 0 then Report.Failed("Max alignment subtype" & NAC); end if; if A2I(My_Quarter'Address) mod (CD30002_0.Small_Alignment) /= 0 then Report.Failed("Factor of words subtype" & NAC); end if; if A2I(My_Half'Address) mod (CD30002_0.Multiple_Type_Alignment) /= 0 then Report.Failed("Multiple of words subtype" & NAC); end if; if A2I(Stuff_Object'Address) mod Impdef.Max_Default_Alignment /= 0 then Report.Failed("Stuff alignment object" & NAC); end if; if A2I(Quarter_Object'Address) mod (CD30002_0.Small_Alignment) /= 0 then Report.Failed("Factor of words object" & NAC); end if; if A2I(Half_Object'Address) mod (CD30002_0.Multiple_Object_Alignment) /= 0 then Report.Failed("Multiple of words object" & NAC); end if; Report.Result; end CD30002;