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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/ada/acats/tests/cd/cd30002.a
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+-- 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;