aboutsummaryrefslogtreecommitdiffstats
path: root/src/grt/grt-rtis_utils.adb
blob: 7f78de01c461b090cd199fd7ea911d3403f20c58 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
--  GHDL Run Time (GRT) - RTI utilities.
--  Copyright (C) 2002 - 2014 Tristan Gingold
--
--  GHDL is free software; you can redistribute it and/or modify it under
--  the terms of the GNU General Public License as published by the Free
--  Software Foundation; either version 2, or (at your option) any later
--  version.
--
--  GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
--  WARRANTY; without even the implied warranty of MERCHANTABILITY or
--  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
--  for more details.
--
--  You should have received a copy of the GNU General Public License
--  along with GCC; see the file COPYING.  If not, write to the Free
--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
--  02111-1307, USA.
--
--  As a special exception, if other files instantiate generics from this
--  unit, or you link this unit with other files to produce an executable,
--  this unit does not by itself cause the resulting executable to be
--  covered by the GNU General Public License. This exception does not
--  however invalidate any other reasons why the executable file might be
--  covered by the GNU Public License.

with Grt.Errors; use Grt.Errors;
with Grt.To_Strings; use Grt.To_Strings;
with Grt.Vstrings_IO; use Grt.Vstrings_IO;

package body Grt.Rtis_Utils is

   function Traverse_Blocks (Ctxt : Rti_Context) return Traverse_Result
   is
      function Traverse_Instance (Ctxt : Rti_Context) return Traverse_Result;

      function Traverse_Blocks_1 (Ctxt : Rti_Context) return Traverse_Result
      is
         Blk : Ghdl_Rtin_Block_Acc;

         Res : Traverse_Result;
         Nctxt : Rti_Context;
         Index : Ghdl_Index_Type;
         Child : Ghdl_Rti_Access;
      begin
         Res := Process (Ctxt, Ctxt.Block);
         if Res /= Traverse_Ok then
            return Res;
         end if;

         Blk := To_Ghdl_Rtin_Block_Acc (Ctxt.Block);
         Index := 0;
         while Index < Blk.Nbr_Child loop
            Child := Blk.Children (Index);
            Index := Index + 1;
            case Child.Kind is
               when Ghdl_Rtik_Process
                 | Ghdl_Rtik_Block =>
                  declare
                     Nblk : Ghdl_Rtin_Block_Acc;
                  begin
                     Nblk := To_Ghdl_Rtin_Block_Acc (Child);
                     Nctxt := (Base => Ctxt.Base + Nblk.Loc,
                               Block => Child);
                     Res := Traverse_Blocks_1 (Nctxt);
                  end;
               when Ghdl_Rtik_For_Generate =>
                  declare
                     Gen : constant Ghdl_Rtin_Generate_Acc :=
                       To_Ghdl_Rtin_Generate_Acc (Child);
                     Length : Ghdl_Index_Type;
                  begin
                     Nctxt := (Base => To_Addr_Acc (Ctxt.Base + Gen.Loc).all,
                               Block => Gen.Child);
                     Length := Get_For_Generate_Length (Gen, Ctxt);
                     for I in 1 .. Length loop
                        Res := Traverse_Blocks_1 (Nctxt);
                        exit when Res = Traverse_Stop;
                        Nctxt.Base := Nctxt.Base + Gen.Size;
                     end loop;
                  end;
               when Ghdl_Rtik_If_Generate
                 | Ghdl_Rtik_Case_Generate =>
                  Nctxt := Get_If_Case_Generate_Child (Ctxt, Child);
                  if Nctxt.Base /= Null_Address then
                     Res := Traverse_Blocks_1 (Nctxt);
                  end if;
               when Ghdl_Rtik_Instance =>
                  Res := Process (Ctxt, Child);
                  if Res = Traverse_Ok then
                     declare
                        Obj : Ghdl_Rtin_Instance_Acc;
                     begin
                        Obj := To_Ghdl_Rtin_Instance_Acc (Child);

                        Get_Instance_Context (Obj, Ctxt, Nctxt);
                        if Nctxt /= Null_Context then
                           Res := Traverse_Instance (Nctxt);
                        end if;
                     end;
                  end if;
               when Ghdl_Rtik_Package
                 | Ghdl_Rtik_Entity
                 | Ghdl_Rtik_Architecture =>
                  Internal_Error ("traverse_blocks");
               when others =>
                  Res := Process (Ctxt, Child);
            end case;
            exit when Res = Traverse_Stop;
         end loop;

         return Res;
      end Traverse_Blocks_1;

      function Traverse_Instance (Ctxt : Rti_Context) return Traverse_Result
      is
         Blk : Ghdl_Rtin_Block_Acc;

         Res : Traverse_Result;
         Nctxt : Rti_Context;

      begin
         Blk := To_Ghdl_Rtin_Block_Acc (Ctxt.Block);
         case Blk.Common.Kind is
            when Ghdl_Rtik_Architecture =>
               Nctxt := (Base => Ctxt.Base,
                         Block => Blk.Parent);
               --  The entity.
               Res := Traverse_Blocks_1 (Nctxt);
               if Res /= Traverse_Stop then
                  --  The architecture.
                  Res := Traverse_Blocks_1 (Ctxt);
               end if;
            when Ghdl_Rtik_Package_Body =>
               Nctxt := (Base => Ctxt.Base,
                         Block => Blk.Parent);
               Res := Traverse_Blocks_1 (Nctxt);
            when others =>
               Internal_Error ("traverse_blocks");
         end case;
         return Res;
      end Traverse_Instance;
   begin
      return Traverse_Instance (Ctxt);
   end Traverse_Blocks;

   --  Disp value stored at ADDR and whose type is described by RTI.
   procedure Get_Enum_Value
     (Vstr : in out Vstring; Rti : Ghdl_Rti_Access; Val : Ghdl_Index_Type)
   is
      Enum_Rti : Ghdl_Rtin_Type_Enum_Acc;
   begin
      Enum_Rti := To_Ghdl_Rtin_Type_Enum_Acc (Rti);
      Append (Vstr, Enum_Rti.Names (Val));
   end Get_Enum_Value;

   procedure Object_To_Base_Bounds (Obj_Type : Ghdl_Rti_Access;
                                    Obj_Loc : Address;
                                    Addr : out Address;
                                    Bounds : out Address) is
   begin
      --  FIXME: put this into a function.
      Bounds := Null_Address;
      Addr := Obj_Loc;
      case Obj_Type.Kind is
         when  Ghdl_Rtik_Subtype_Array
           | Ghdl_Rtik_Type_Record
           | Ghdl_Rtik_Subtype_Record =>
            --  Object is a pointer.
            if Rti_Complex_Type (Obj_Type) then
               Addr := To_Addr_Acc (Obj_Loc).all;
            end if;
         when Ghdl_Rtik_Type_Array
           | Ghdl_Rtik_Type_Unbounded_Record
           | Ghdl_Rtik_Subtype_Unbounded_Record =>
            --  Object is a fat pointer.
            Bounds := To_Ghdl_Uc_Array_Acc (Obj_Loc).Bounds;
            Addr := To_Ghdl_Uc_Array_Acc (Obj_Loc).Base;
         when others =>
            null;
      end case;
   end Object_To_Base_Bounds;

   procedure Record_To_Element (Obj : Address;
                                El : Ghdl_Rtin_Element_Acc;
                                Is_Sig : Boolean;
                                Rec_Layout : Address;
                                El_Addr : out Address;
                                El_Bounds : out Address)
   is
      Off : Ghdl_Index_Type;
      Off_Addr : Address;
   begin
      if Is_Sig then
         Off := El.Sig_Off;
      else
         Off := El.Val_Off;
      end if;

      case El.Common.Mode is
         when Ghdl_Rti_Element_Static =>
            El_Addr := Obj + Off;
            El_Bounds := Null_Address;
         when Ghdl_Rti_Element_Complex =>
            Off_Addr := Rec_Layout + Off;
            El_Addr := Obj + To_Ghdl_Index_Ptr (Off_Addr).all;
            El_Bounds := Null_Address;
         when Ghdl_Rti_Element_Unbounded =>
            Off_Addr := Rec_Layout + Off;
            El_Addr := Obj + To_Ghdl_Index_Ptr (Off_Addr).all;
            El_Bounds := Rec_Layout + El.Layout_Off;
            if El.Eltype.Kind = Ghdl_Rtik_Type_Array then
               El_Bounds := Array_Layout_To_Bounds (El_Bounds);
            end if;
         when others =>
            Internal_Error ("record_to_element");
      end case;
   end Record_To_Element;

   procedure Foreach_Scalar (Ctxt : Rti_Context;
                             Obj_Type : Ghdl_Rti_Access;
                             Obj_Addr : Address;
                             Is_Sig : Boolean;
                             Param : Param_Type)
   is
      --  Current address.
      Addr : Address;
      Bounds : Address;

      Name : Vstring;

      procedure Handle_Any (Rti : Ghdl_Rti_Access);

      procedure Handle_Scalar (Rti : Ghdl_Rti_Access)
      is
         procedure Update (S : Ghdl_Index_Type) is
         begin
            Addr := Addr + (S / Storage_Unit);
         end Update;
      begin
         Process (Addr, Name, Rti, Param);

         if Is_Sig then
            Update (Address'Size);
         else
            case Rti.Kind is
               when Ghdl_Rtik_Type_I32 =>
                  Update (32);
               when Ghdl_Rtik_Type_E8 =>
                  Update (8);
               when Ghdl_Rtik_Type_E32 =>
                  Update (32);
               when Ghdl_Rtik_Type_B1 =>
                  Update (8);
               when Ghdl_Rtik_Type_F64 =>
                  Update (64);
               when Ghdl_Rtik_Type_P64 =>
                  Update (64);
               when others =>
                  Internal_Error ("handle_scalar");
            end case;
         end if;
      end Handle_Scalar;

      procedure Range_Pos_To_Val (Rti : Ghdl_Rti_Access;
                                  Rng : Ghdl_Range_Ptr;
                                  Pos : Ghdl_Index_Type;
                                  Val : out Value_Union)
      is
      begin
         case Rti.Kind is
            when Ghdl_Rtik_Type_I32 =>
               case Rng.I32.Dir is
                  when Dir_To =>
                     Val.I32 := Rng.I32.Left + Ghdl_I32 (Pos);
                  when Dir_Downto =>
                     Val.I32 := Rng.I32.Left - Ghdl_I32 (Pos);
               end case;
            when Ghdl_Rtik_Type_E8 =>
               case Rng.E8.Dir is
                  when Dir_To =>
                     Val.E8 := Rng.E8.Left + Ghdl_E8 (Pos);
                  when Dir_Downto =>
                     Val.E8 := Rng.E8.Left - Ghdl_E8 (Pos);
               end case;
            when Ghdl_Rtik_Type_E32 =>
               case Rng.E32.Dir is
                  when Dir_To =>
                     Val.E32 := Rng.E32.Left + Ghdl_E32 (Pos);
                  when Dir_Downto =>
                     Val.E32 := Rng.E32.Left - Ghdl_E32 (Pos);
               end case;
            when Ghdl_Rtik_Type_B1 =>
               case Pos is
                  when 0 =>
                     Val.B1 := Rng.B1.Left;
                  when 1 =>
                     Val.B1 := Rng.B1.Right;
                  when others =>
                     Val.B1 := False;
               end case;
            when others =>
               Internal_Error ("grt.rtis_utils.range_pos_to_val");
         end case;
      end Range_Pos_To_Val;

      procedure Pos_To_Vstring (Vstr : in out Vstring;
                                Rti : Ghdl_Rti_Access;
                                Rng : Ghdl_Range_Ptr;
                                Pos : Ghdl_Index_Type)
      is
         V : Value_Union;
      begin
         Range_Pos_To_Val (Rti, Rng, Pos, V);
         case Rti.Kind is
            when Ghdl_Rtik_Type_I32 =>
               declare
                  S : String (1 .. 12);
                  F : Natural;
               begin
                  To_String (S, F, V.I32);
                  Append (Vstr, S (F .. S'Last));
               end;
            when Ghdl_Rtik_Type_E8 =>
               Get_Enum_Value (Vstr, Rti, Ghdl_Index_Type (V.E8));
            when Ghdl_Rtik_Type_E32 =>
               Get_Enum_Value (Vstr, Rti, Ghdl_Index_Type (V.E32));
            when Ghdl_Rtik_Type_B1 =>
               Get_Enum_Value (Vstr, Rti, Ghdl_B1'Pos (V.B1));
            when others =>
               Append (Vstr, '?');
         end case;
      end Pos_To_Vstring;

      procedure Handle_Array_1 (Arr_Rti : Ghdl_Rtin_Type_Array_Acc;
                                Index : Ghdl_Index_Type)
      is
         Idx_Rti : constant Ghdl_Rti_Access := Arr_Rti.Indexes (Index);
         Base_Type : constant Ghdl_Rti_Access := Get_Base_Type (Idx_Rti);
         El_Rti : constant Ghdl_Rti_Access := Arr_Rti.Element;
         Last_Index : constant Ghdl_Index_Type := Arr_Rti.Nbr_Dim - 1;
         Rng : Ghdl_Range_Ptr;
         Len : Ghdl_Index_Type;
         P : Natural;
         Cur_Bounds : Address;
      begin
         P := Length (Name);
         if Index = 0 then
            Append (Name, '(');
         else
            Append (Name, ',');
         end if;

         Extract_Range (Bounds, Base_Type, Rng);
         Len := Range_To_Length (Rng, Base_Type);

         Cur_Bounds := Bounds;
         for I in 1 .. Len loop
            Pos_To_Vstring (Name, Base_Type, Rng, I - 1);
            if Index = Last_Index then
               --  FIXME: not always needed.
               Bounds := Array_Layout_To_Bounds (Cur_Bounds);
               Append (Name, ')');
               Handle_Any (El_Rti);
            else
               Bounds := Cur_Bounds;
               Handle_Array_1 (Arr_Rti, Index + 1);
            end if;
            Truncate (Name, P + 1);
         end loop;
         Truncate (Name, P);
      end Handle_Array_1;

      procedure Handle_Record (Rti : Ghdl_Rtin_Type_Record_Acc)
      is
         Rec_Addr : constant Address := Addr;
         Rec_Bounds : constant Address := Bounds;
         Sizes : constant Ghdl_Indexes_Ptr :=
           To_Ghdl_Indexes_Ptr (Bounds);
         El : Ghdl_Rtin_Element_Acc;
         P : Natural;
      begin
         P := Length (Name);
         for I in 1 .. Rti.Nbrel loop
            El := To_Ghdl_Rtin_Element_Acc (Rti.Elements (I - 1));
            Record_To_Element
              (Rec_Addr, El, Is_Sig, Rec_Bounds, Addr, Bounds);
            Append (Name, '.');
            Append (Name, El.Name);
            Handle_Any (El.Eltype);
            Truncate (Name, P);
         end loop;
         if Is_Sig then
            Addr := Rec_Addr + Sizes.Signal;
         else
            Addr := Rec_Addr + Sizes.Value;
         end if;
         --  Bounds was fully used, no need to restore it.
         Bounds := Null_Address;
      end Handle_Record;

      procedure Handle_Any (Rti : Ghdl_Rti_Access) is
      begin
         case Rti.Kind is
            when Ghdl_Rtik_Subtype_Scalar =>
               Handle_Scalar (To_Ghdl_Rtin_Subtype_Scalar_Acc (Rti).Basetype);
            when Ghdl_Rtik_Type_I32
              | Ghdl_Rtik_Type_E8
              | Ghdl_Rtik_Type_E32
              | Ghdl_Rtik_Type_B1 =>
               Handle_Scalar (Rti);
            when Ghdl_Rtik_Type_Array =>
               Handle_Array_1 (To_Ghdl_Rtin_Type_Array_Acc (Rti), 0);
            when Ghdl_Rtik_Subtype_Array =>
               declare
                  St : constant Ghdl_Rtin_Subtype_Composite_Acc :=
                    To_Ghdl_Rtin_Subtype_Composite_Acc (Rti);
                  Bt : constant Ghdl_Rtin_Type_Array_Acc :=
                    To_Ghdl_Rtin_Type_Array_Acc (St.Basetype);
                  Prev_Bounds : constant Address := Bounds;
                  Layout : Address;
               begin
                  Layout := Loc_To_Addr (St.Common.Depth, St.Layout, Ctxt);
                  Bounds := Array_Layout_To_Bounds (Layout);
                  Handle_Array_1 (Bt, 0);
                  Bounds := Prev_Bounds;
               end;
--          when Ghdl_Rtik_Type_File =>
--             declare
--                Vptr : Ghdl_Value_Ptr;
--             begin
--                Vptr := To_Ghdl_Value_Ptr (Obj);
--                Put (Stream, "File#");
--                Put_I32 (Stream, Vptr.I32);
--                --  FIXME: update OBJ (not very useful since never in a
--                --   composite type).
--             end;
            when Ghdl_Rtik_Type_Record =>
               declare
                  Bt : constant Ghdl_Rtin_Type_Record_Acc :=
                    To_Ghdl_Rtin_Type_Record_Acc (Rti);
                  Prev_Bounds : constant Address := Bounds;
               begin
                  Bounds := Loc_To_Addr (Bt.Common.Depth, Bt.Layout, Ctxt);
                  Handle_Record (Bt);
                  Bounds := Prev_Bounds;
               end;
            when Ghdl_Rtik_Type_Unbounded_Record =>
               --  Bounds (layout) must have been extracted.
               Handle_Record (To_Ghdl_Rtin_Type_Record_Acc (Rti));
            when Ghdl_Rtik_Subtype_Unbounded_Record =>
               declare
                  St : constant Ghdl_Rtin_Subtype_Composite_Acc :=
                    To_Ghdl_Rtin_Subtype_Composite_Acc (Rti);
                  Bt : constant Ghdl_Rtin_Type_Record_Acc :=
                    To_Ghdl_Rtin_Type_Record_Acc (St.Basetype);
               begin
                  Handle_Record (Bt);
               end;
            when Ghdl_Rtik_Subtype_Record =>
               declare
                  St : constant Ghdl_Rtin_Subtype_Composite_Acc :=
                    To_Ghdl_Rtin_Subtype_Composite_Acc (Rti);
                  Bt : constant Ghdl_Rtin_Type_Record_Acc :=
                    To_Ghdl_Rtin_Type_Record_Acc (St.Basetype);
                  Prev_Bounds : constant Address := Bounds;
               begin
                  Bounds := Loc_To_Addr (St.Common.Depth, St.Layout, Ctxt);
                  Handle_Record (Bt);
                  Bounds := Prev_Bounds;
               end;
            when others =>
               Internal_Error ("grt.rtis_utils.foreach_scalar.handle_any");
         end case;
      end Handle_Any;
   begin
      Object_To_Base_Bounds (Obj_Type, Obj_Addr, Addr, Bounds);
      Handle_Any (Obj_Type);
      Free (Name);
   end Foreach_Scalar;

   procedure Get_Value (Str : in out Vstring;
                        Value : Value_Union;
                        Type_Rti : Ghdl_Rti_Access)
   is
   begin
      case Type_Rti.Kind is
         when Ghdl_Rtik_Type_I32 =>
            declare
               S : String (1 .. 12);
               F : Natural;
            begin
               To_String (S, F, Value.I32);
               Append (Str, S (F .. S'Last));
            end;
         when Ghdl_Rtik_Type_E8 =>
            Get_Enum_Value (Str, Type_Rti, Ghdl_Index_Type (Value.E8));
         when Ghdl_Rtik_Type_E32 =>
            Get_Enum_Value (Str, Type_Rti, Ghdl_Index_Type (Value.E32));
         when Ghdl_Rtik_Type_B1 =>
            Get_Enum_Value
              (Str, Type_Rti, Ghdl_Index_Type (Ghdl_B1'Pos (Value.B1)));
         when Ghdl_Rtik_Type_F64 =>
            declare
               S : String (1 .. 32);
               L : Integer;

               function Snprintf_G (Cstr : Address;
                                    Size : Natural;
                                    Arg : Ghdl_F64)
                 return Integer;
               pragma Import (C, Snprintf_G, "__ghdl_snprintf_g");

            begin
               L := Snprintf_G (S'Address, S'Length, Value.F64);
               if L < 0 then
                  --  FIXME.
                  Append (Str, "?");
               else
                  Append (Str, S (1 .. L));
               end if;
            end;
         when Ghdl_Rtik_Type_P32 =>
            declare
               S : String (1 .. 12);
               F : Natural;
            begin
               To_String (S, F, Value.I32);
               Append (Str, S (F .. S'Last));
               Append
                 (Str, Get_Physical_Unit_Name
                    (To_Ghdl_Rtin_Type_Physical_Acc (Type_Rti).Units (0)));
            end;
         when Ghdl_Rtik_Type_P64 =>
            declare
               S : String (1 .. 21);
               F : Natural;
            begin
               To_String (S, F, Value.I64);
               Append (Str, S (F .. S'Last));
               Append
                 (Str, Get_Physical_Unit_Name
                    (To_Ghdl_Rtin_Type_Physical_Acc (Type_Rti).Units (0)));
            end;
         when others =>
            Internal_Error ("grt.rtis_utils.get_value");
      end case;
   end Get_Value;

   procedure Disp_Value (Stream : FILEs;
                         Value : Value_Union;
                         Type_Rti : Ghdl_Rti_Access)
   is
      Name : Vstring;
   begin
      Rtis_Utils.Get_Value (Name, Value, Type_Rti);
      Put (Stream, Name);
      Free (Name);
   end Disp_Value;

   function Get_Physical_Unit_Name (Unit : Ghdl_Rti_Access)
                                   return Ghdl_C_String
   is
   begin
      case Unit.Kind is
         when Ghdl_Rtik_Unit64 =>
            return To_Ghdl_Rtin_Unit64_Acc (Unit).Name;
         when Ghdl_Rtik_Unitptr =>
            return To_Ghdl_Rtin_Unitptr_Acc (Unit).Name;
         when others =>
            Internal_Error ("rtis_utils.physical_unit_name");
      end case;
   end Get_Physical_Unit_Name;

   function Get_Physical_Unit_Value (Unit : Ghdl_Rti_Access;
                                     Type_Rti : Ghdl_Rti_Access)
                                    return Ghdl_I64 is
   begin
      case Unit.Kind is
         when Ghdl_Rtik_Unit64 =>
            return To_Ghdl_Rtin_Unit64_Acc (Unit).Value;
         when Ghdl_Rtik_Unitptr =>
            case Type_Rti.Kind is
               when Ghdl_Rtik_Type_P64 =>
                  return To_Ghdl_Rtin_Unitptr_Acc (Unit).Addr.I64;
               when Ghdl_Rtik_Type_P32 =>
                  return Ghdl_I64
                    (To_Ghdl_Rtin_Unitptr_Acc (Unit).Addr.I32);
               when others =>
                  Internal_Error ("get_physical_unit_value(1)");
            end case;
         when others =>
            Internal_Error ("get_physical_unit_value(2)");
      end case;
   end Get_Physical_Unit_Value;

   procedure Get_Enum_Value
     (Rstr : in out Rstring; Rti : Ghdl_Rti_Access; Val : Ghdl_Index_Type)
   is
      Enum_Rti : Ghdl_Rtin_Type_Enum_Acc;
   begin
      Enum_Rti := To_Ghdl_Rtin_Type_Enum_Acc (Rti);
      Prepend (Rstr, Enum_Rti.Names (Val));
   end Get_Enum_Value;


   procedure Get_Value (Rstr : in out Rstring;
                        Addr : Address;
                        Type_Rti : Ghdl_Rti_Access)
   is
      Value : constant Ghdl_Value_Ptr := To_Ghdl_Value_Ptr (Addr);
   begin
      case Type_Rti.Kind is
         when Ghdl_Rtik_Type_I32 =>
            declare
               S : String (1 .. 12);
               F : Natural;
            begin
               To_String (S, F, Value.I32);
               Prepend (Rstr, S (F .. S'Last));
            end;
         when Ghdl_Rtik_Type_E8 =>
            Get_Enum_Value (Rstr, Type_Rti, Ghdl_Index_Type (Value.E8));
         when Ghdl_Rtik_Type_E32 =>
            Get_Enum_Value (Rstr, Type_Rti, Ghdl_Index_Type (Value.E32));
         when Ghdl_Rtik_Type_B1 =>
            Get_Enum_Value
              (Rstr, Type_Rti, Ghdl_Index_Type (Ghdl_B1'Pos (Value.B1)));
         when others =>
            Internal_Error ("grt.rtis_utils.get_value(rstr)");
      end case;
   end Get_Value;

   procedure Get_Path_Name (Rstr : in out Rstring;
                            Last_Ctxt : Rti_Context;
                            Sep : Character;
                            Is_Instance : Boolean := True)
   is
      Blk : Ghdl_Rtin_Block_Acc;
      Ctxt : Rti_Context;
   begin
      Ctxt := Last_Ctxt;
      loop
         Blk := To_Ghdl_Rtin_Block_Acc (Ctxt.Block);
         case Ctxt.Block.Kind is
            when Ghdl_Rtik_Entity =>
               declare
                  Link : Ghdl_Entity_Link_Acc;
               begin
                  Link := To_Ghdl_Entity_Link_Acc (Ctxt.Base);
                  Ctxt := (Base => Ctxt.Base,
                           Block => Link.Rti);
                  if Ctxt.Block = null then
                     --  Process in an entity.
                     --  FIXME: check.
                     Prepend (Rstr, Blk.Name);
                     return;
                  end if;
               end;
            when Ghdl_Rtik_Architecture =>
               declare
                  Entity_Ctxt: Rti_Context;
                  Link : Ghdl_Entity_Link_Acc;
                  Parent_Inst : Ghdl_Rti_Access;
               begin
                  --  Architecture name.
                  if Is_Instance then
                     Prepend (Rstr, ')');
                     Prepend (Rstr, Blk.Name);
                     Prepend (Rstr, '(');
                  end if;

                  Entity_Ctxt := Get_Parent_Context (Ctxt);

                  --  Instance parent.
                  Link := To_Ghdl_Entity_Link_Acc (Entity_Ctxt.Base);
                  Get_Instance_Link (Link, Ctxt, Parent_Inst);

                  --  Add entity name.
                  if Is_Instance or Parent_Inst = null then
                     Prepend (Rstr,
                              To_Ghdl_Rtin_Block_Acc (Entity_Ctxt.Block).Name);
                  end if;

                  if Parent_Inst = null then
                     --  Top reached.
                     Prepend (Rstr, Sep);
                     return;
                  else
                     --  Instantiation statement label.
                     if Is_Instance then
                        Prepend (Rstr, '@');
                     end if;
                     Prepend (Rstr,
                              To_Ghdl_Rtin_Object_Acc (Parent_Inst).Name);
                     Prepend (Rstr, Sep);
                  end if;
               end;
            when Ghdl_Rtik_Process
              | Ghdl_Rtik_Block =>
               Prepend (Rstr, Blk.Name);
               Prepend (Rstr, Sep);
               Ctxt := Get_Parent_Context (Ctxt);
            when Ghdl_Rtik_Generate_Body =>
               declare
                  Gen : constant Ghdl_Rtin_Generate_Acc :=
                    To_Ghdl_Rtin_Generate_Acc (Blk.Parent);
                  Iter : Ghdl_Rtin_Object_Acc;
                  Addr : Address;
               begin
                  if Blk.Parent.Kind = Ghdl_Rtik_For_Generate then
                     Prepend (Rstr, ')');
                     Iter := To_Ghdl_Rtin_Object_Acc (Blk.Children (0));
                     Addr := Loc_To_Addr (Iter.Common.Depth, Iter.Loc, Ctxt);
                     Get_Value (Rstr, Addr, Get_Base_Type (Iter.Obj_Type));
                     Prepend (Rstr, '(');
                  end if;
                  Prepend (Rstr, Gen.Name);
                  Prepend (Rstr, Sep);
                  Ctxt := Get_Parent_Context (Ctxt);
               end;
            when others =>
               Internal_Error ("grt.rtis_utils.get_path_name");
         end case;
      end loop;
   end Get_Path_Name;

   procedure Put (Stream : FILEs; Ctxt : Rti_Context)
   is
      Rstr : Rstring;
   begin
      Get_Path_Name (Rstr, Ctxt, '.');
      Put (Stream, Rstr);
      Free (Rstr);
   end Put;

   function Get_Linecol_Line (Linecol : Ghdl_Index_Type) return Ghdl_U32 is
   begin
      return Ghdl_U32 (Linecol / 256);
   end Get_Linecol_Line;

   function Get_Linecol_Col (Linecol : Ghdl_Index_Type) return Ghdl_U32 is
   begin
      return Ghdl_U32 (Linecol mod 256);
   end Get_Linecol_Col;

   function Get_Filename (Ctxt : Rti_Context) return Ghdl_C_String
   is
      C : Rti_Context;
   begin
      C := Ctxt;
      loop
         case C.Block.Kind is
            when Ghdl_Rtik_Package
              | Ghdl_Rtik_Package_Body
              | Ghdl_Rtik_Architecture
              | Ghdl_Rtik_Entity =>
               declare
                  Blk : constant Ghdl_Rtin_Block_Filename_Acc :=
                    To_Ghdl_Rtin_Block_Filename_Acc (C.Block);
               begin
                  return Blk.Filename;
               end;
            when others =>
               C := Get_Parent_Context (C);
         end case;
      end loop;
   end Get_Filename;
end Grt.Rtis_Utils;