1-- CD30003.A
2--
3--                             Grant of Unlimited Rights
4--
5--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
6--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
7--     unlimited rights in the software and documentation contained herein.
8--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
9--     this public release, the Government intends to confer upon all
10--     recipients unlimited rights  equal to those held by the Government.
11--     These rights include rights to use, duplicate, release or disclose the
12--     released technical data and computer software in whole or in part, in
13--     any manner and for any purpose whatsoever, and to have or permit others
14--     to do so.
15--
16--                                    DISCLAIMER
17--
18--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
19--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
20--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
21--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
22--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
23--     PARTICULAR PURPOSE OF SAID MATERIAL.
24--*
25--
26-- OBJECTIVE:
27--      Check that a Size clause for an object is supported if the specified
28--      size is at least as large as the subtype's size, and correspond to a
29--      size in storage elements that is a multiple of the object's (non-zero)
30--      Alignment. RM 13.3(43)
31--
32-- TEST DESCRIPTION:
33--      This test defines several types and then asserts specific sizes for
34--      the, it then checks that the size set is reported back.
35--
36-- APPLICABILITY CRITERIA:
37--      All implementations must attempt to compile this test.
38--
39--      For implementations validating against Systems Programming Annex (C):
40--        this test must execute and report PASSED.
41--
42--      For implementations not validating against Annex C:
43--        this test may report compile time errors at one or more points
44--        indicated by "-- ANX-C RQMT", in which case it may be graded as inapplicable.
45--        Otherwise, the test must execute and report PASSED.
46--
47--
48-- CHANGE HISTORY:
49--      22 JUL 95   SAIC   Initial version
50--      08 MAY 96   SAIC   Corrected and strengthened for 2.1
51--      14 FEB 97   PWB.CTA Changed 'Size specifications to multiples
52--                         of System.Storage_Unit; restricted 'Size spec
53--                         for enumeration object to max integer size.
54--      16 FEB 98   EDS    Modify Documentation.
55--      25 JAN 99   RLB    Repaired to properly set and check sizes.
56--      29 JAN 99   RLB    Added Pack pragma needed for some implementations.
57--                         Corrected to support a Storage_Unit size < 8.
58--!
59
60------------------------------------------------------------------- CD30003
61
62with Report;
63with System;
64procedure CD30003 is
65
66  ---------------------------------------------------------------------------
67  -- types and subtypes
68  ---------------------------------------------------------------------------
69
70  type Bit is mod 2**1;
71  for Bit'Size use 1;                                         -- ANX-C RQMT.
72
73  type Byte is mod 2**8;
74  for Byte'Size use 8;                                        -- ANX-C RQMT.
75
76  type Smallword is mod 2**8;
77  for Smallword'size use 16;                                  -- ANX-C RQMT.
78
79  type Byte_Array is array(1..4) of Byte;
80  pragma Pack(Byte_Array);                                    -- ANX-C RQMT.
81  -- size should be 32
82
83  type Smallword_Array is array(1..4) of Smallword;
84  pragma Pack(Smallword_Array); -- Required if Storage_Unit > 16. -- ANX-C RQMT.
85
86  -- Use to calulate maximum required size:
87  type Max_Modular is mod System.Max_Binary_Modulus;
88  type Max_Integer is range System.Min_Int .. System.Max_Int;
89  Enum_Size : constant := Integer'Min (32,
90      Integer'Min (Max_Modular'Size, Max_Integer'Size));
91  type Transmission_Data is ( Empty, Input, Output, IO, Control );
92  for Transmission_Data'Size use Enum_Size;                   -- ANX-C RQMT.
93
94  -- Sizes to try:
95
96  -- The basic sizes are based on a "normal" Storage_Unit = 8 implementation.
97  -- We then use formulas to insure that the specified sizes meet the
98  -- the minimum level of support and AI-0051.
99
100  Modular_Single_Size : constant := Integer'Min (((8 + (System.Storage_Unit-1))
101     /System.Storage_Unit)*System.Storage_Unit, Max_Modular'Size);
102     -- Calulate an appropriate, legal, and required to be supported size to
103     -- try, which is the size of Byte. Note that object sizes must be
104     -- a multiple of the storage unit for the compiler.
105
106  Modular_Double_Size : constant := Integer'Min (((16 + (System.Storage_Unit-1))
107     /System.Storage_Unit)*System.Storage_Unit, Max_Modular'Size);
108
109  Modular_Quad_Size : constant := Integer'Min (((32 + (System.Storage_Unit-1))
110     /System.Storage_Unit)*System.Storage_Unit, Max_Modular'Size);
111
112  Array_Quad_Size : constant := ((4 * 8 + (System.Storage_Unit-1))
113     /System.Storage_Unit)*System.Storage_Unit;
114
115  Array_Octo_Size : constant := ((4 * 16 + (System.Storage_Unit-1))
116     /System.Storage_Unit)*System.Storage_Unit;
117
118  Rounded_Enum_Size : constant := ((Enum_Size + (System.Storage_Unit-1))
119     /System.Storage_Unit)*System.Storage_Unit;
120
121  Enum_Quad_Size : constant := Integer'Min (((32 + (System.Storage_Unit-1))
122     /System.Storage_Unit)*System.Storage_Unit,
123     Integer'Min (Max_Modular'Size, Max_Integer'Size));
124
125
126  ---------------------------------------------------------------------------
127  -- objects
128  ---------------------------------------------------------------------------
129
130  Bit_8 : Bit :=0;
131  for Bit_8'Size use System.Storage_Unit;                     -- ANX-C RQMT.
132
133  Bit_G : Bit :=0;
134  for Bit_G'Size use Modular_Double_Size;                     -- ANX-C RQMT.
135
136  Byte_8 : Byte :=0;
137  for Byte_8'Size use Modular_Single_Size;                    -- ANX-C RQMT.
138
139  Byte_G : Byte :=0;
140  for Byte_G'Size use Modular_Double_Size;                    -- ANX-C RQMT.
141
142  Smallword_1 : Smallword :=0;
143  for Smallword_1'Size use Modular_Double_Size;               -- ANX-C RQMT.
144
145  Smallword_2 : Smallword :=0;
146  for Smallword_2'Size use Modular_Quad_Size;                 -- ANX-C RQMT.
147
148  Byte_Array_1 : Byte_Array := (others=>0);
149  for Byte_Array_1'Size use Array_Quad_Size;                  -- ANX-C RQMT.
150
151  Smallword_Array_1 : Smallword_Array := (others=>0);
152  for Smallword_Array_1'Size use Array_Octo_Size;             -- ANX-C RQMT.
153
154  Transmission_Data_1 : aliased Transmission_Data := Empty;
155
156  Transmission_Data_2 : Transmission_Data := Control;
157  for Transmission_Data_2'Size use Enum_Quad_Size;            -- ANX-C RQMT.
158
159begin  -- Main test procedure.
160
161  Report.Test ("CD30003", "Check that Size clauses are supported for " &
162                          "values at least as large as the subtypes " &
163                          "size, and correspond to a size in storage " &
164                          "elements that is a multiple of the objects " &
165                          "(non-zero) Alignment" );
166
167  if Bit_8'Size /= System.Storage_Unit then
168    Report.Failed("Expected Bit_8'Size =" & Integer'Image(System.Storage_Unit)
169                      & " , actually =" & Integer'Image(Bit_8'Size));
170  end if;
171
172  if Bit_G'Size /= Modular_Double_Size then
173    Report.Failed("Expected Bit_G'Size =" & Integer'Image(Modular_Double_Size)
174                      & " , actually =" & Integer'Image(Bit_G'Size));
175  end if;
176
177  if Byte_8'Size /= Modular_Single_Size then
178    Report.Failed("Expected Byte_8'Size =" & Integer'Image(Modular_Single_Size)
179                      & " , actually =" & Integer'Image(Byte_8'Size));
180  end if;
181
182  if Byte_G'Size /= Modular_Double_Size then
183    Report.Failed("Expected Bit_G'Size =" & Integer'Image(Modular_Double_Size)
184                      & " , actually =" & Integer'Image(Byte_G'Size));
185  end if;
186
187  if Smallword_1'Size /= Modular_Double_Size then
188    Report.Failed("Expected Smallword_1'Size =" &
189                      Integer'Image(Modular_Double_Size) &
190                      ", actually =" & Integer'Image(Smallword_1'Size));
191  end if;
192
193  if Smallword_2'Size /= Modular_Quad_Size then
194    Report.Failed("Expected Smallword_2'Size =" &
195                      Integer'Image(Modular_Quad_Size) &
196                      ", actually =" & Integer'Image(Smallword_2'Size));
197  end if;
198
199  if Byte_Array_1'Size /= Array_Quad_Size then
200    Report.Failed("Expected Byte_Array_1'Size =" &
201                      Integer'Image(Array_Quad_Size) &
202                      ", actually =" & Integer'Image(Byte_Array_1'Size));
203  end if;
204
205  if Smallword_Array_1'Size /= Array_Octo_Size then
206    Report.Failed(
207      "Expected Smallword_Array_1'Size =" &
208                      Integer'Image(Array_Octo_Size) &
209                      ", actually =" & Integer'Image(Smallword_Array_1'Size));
210  end if;
211
212  if Transmission_Data_1'Size /= Enum_Size and then
213     Transmission_Data_1'Size /= Rounded_Enum_Size then
214    Report.Failed(
215      "Expected Transmission_Data_1'Size =" & Integer'Image(Rounded_Enum_Size) &
216                      ", actually =" & Integer'Image(Transmission_Data_1'Size));
217  end if;
218
219  if Transmission_Data_2'Size /= Enum_Quad_Size then
220    Report.Failed(
221      "Expected Transmission_Data_2'Size =" & Integer'Image(Enum_Quad_Size) &
222                      ", actually =" & Integer'Image(Transmission_Data_2'Size));
223  end if;
224
225  Report.Result;
226
227end CD30003;
228