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PR tree-optimization/19853
[official-gcc.git] / gcc / ada / lib-writ.adb
blob2de8789514b6db8aaa89474e6d59f4ea09468031
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- L I B . W R I T --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2004 Free Software Foundation, Inc. --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
21 -- --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 -- --
25 ------------------------------------------------------------------------------
26
27 with ALI; use ALI;
28 with Atree; use Atree;
29 with Casing; use Casing;
30 with Einfo; use Einfo;
31 with Errout; use Errout;
32 with Fname; use Fname;
33 with Fname.UF; use Fname.UF;
34 with Lib.Util; use Lib.Util;
35 with Lib.Xref; use Lib.Xref;
36 with Namet; use Namet;
37 with Nlists; use Nlists;
38 with Gnatvsn; use Gnatvsn;
39 with Opt; use Opt;
40 with Osint; use Osint;
41 with Osint.C; use Osint.C;
42 with Par;
43 with Restrict; use Restrict;
44 with Rident; use Rident;
45 with Scn; use Scn;
46 with Sinfo; use Sinfo;
47 with Sinput; use Sinput;
48 with Stringt; use Stringt;
49 with Tbuild; use Tbuild;
50 with Uname; use Uname;
51
52 with System.WCh_Con; use System.WCh_Con;
53
54 package body Lib.Writ is
55
56 -----------------------
57 -- Local Subprograms --
58 -----------------------
59
60 procedure Write_Unit_Name (N : Node_Id);
61 -- Used to write out the unit name for R (pragma Restriction) lines
62 -- for uses of Restriction (No_Dependence => unit-name).
63
64 ----------------------------------
65 -- Add_Preprocessing_Dependency --
66 ----------------------------------
67
68 procedure Add_Preprocessing_Dependency (S : Source_File_Index) is
69 begin
70 Units.Increment_Last;
71 Units.Table (Units.Last) :=
72 (Unit_File_Name => File_Name (S),
73 Unit_Name => No_Name,
74 Expected_Unit => No_Name,
75 Source_Index => S,
76 Cunit => Empty,
77 Cunit_Entity => Empty,
78 Dependency_Num => 0,
79 Dynamic_Elab => False,
80 Fatal_Error => False,
81 Generate_Code => False,
82 Has_RACW => False,
83 Ident_String => Empty,
84 Loading => False,
85 Main_Priority => -1,
86 Munit_Index => 0,
87 Serial_Number => 0,
88 Version => 0,
89 Error_Location => No_Location);
90 end Add_Preprocessing_Dependency;
91
92 ------------------------------
93 -- Ensure_System_Dependency --
94 ------------------------------
95
96 procedure Ensure_System_Dependency is
97 System_Uname : Unit_Name_Type;
98 -- Unit name for system spec if needed for dummy entry
99
100 System_Fname : File_Name_Type;
101 -- File name for system spec if needed for dummy entry
102
103 begin
104 -- Nothing to do if we already compiled System
105
106 for Unum in Units.First .. Last_Unit loop
107 if Units.Table (Unum).Source_Index = System_Source_File_Index then
108 return;
109 end if;
110 end loop;
111
112 -- If no entry for system.ads in the units table, then add a entry
113 -- to the units table for system.ads, which will be referenced when
114 -- the ali file is generated. We need this because every unit depends
115 -- on system as a result of Targparm scanning the system.ads file to
116 -- determine the target dependent parameters for the compilation.
117
118 Name_Len := 6;
119 Name_Buffer (1 .. 6) := "system";
120 System_Uname := Name_To_Unit_Name (Name_Enter);
121 System_Fname := File_Name (System_Source_File_Index);
122
123 Units.Increment_Last;
124 Units.Table (Units.Last) := (
125 Unit_File_Name => System_Fname,
126 Unit_Name => System_Uname,
127 Expected_Unit => System_Uname,
128 Source_Index => System_Source_File_Index,
129 Cunit => Empty,
130 Cunit_Entity => Empty,
131 Dependency_Num => 0,
132 Dynamic_Elab => False,
133 Fatal_Error => False,
134 Generate_Code => False,
135 Has_RACW => False,
136 Ident_String => Empty,
137 Loading => False,
138 Main_Priority => -1,
139 Munit_Index => 0,
140 Serial_Number => 0,
141 Version => 0,
142 Error_Location => No_Location);
143
144 -- Parse system.ads so that the checksum is set right
145 -- Style checks are not applied.
146
147 declare
148 Save_Mindex : constant Nat := Multiple_Unit_Index;
149 Save_Style : constant Boolean := Style_Check;
150 begin
151 Multiple_Unit_Index := 0;
152 Style_Check := False;
153 Initialize_Scanner (Units.Last, System_Source_File_Index);
154 Discard_List (Par (Configuration_Pragmas => False));
155 Style_Check := Save_Style;
156 Multiple_Unit_Index := Save_Mindex;
157 end;
158 end Ensure_System_Dependency;
159
160 ---------------
161 -- Write_ALI --
162 ---------------
163
164 procedure Write_ALI (Object : Boolean) is
165
166 ----------------
167 -- Local Data --
168 ----------------
169
170 Last_Unit : constant Unit_Number_Type := Units.Last;
171 -- Record unit number of last unit. We capture this in case we
172 -- have to add a dummy entry to the unit table for package System.
173
174 With_Flags : array (Units.First .. Last_Unit) of Boolean;
175 -- Array of flags to show which units are with'ed
176
177 Elab_Flags : array (Units.First .. Last_Unit) of Boolean;
178 -- Array of flags to show which units have pragma Elaborate set
179
180 Elab_All_Flags : array (Units.First .. Last_Unit) of Boolean;
181 -- Array of flags to show which units have pragma Elaborate All set
182
183 Elab_Des_Flags : array (Units.First .. Last_Unit) of Boolean;
184 -- Array of flags to show which units have Elaborate_All_Desirable set
185
186 Sdep_Table : Unit_Ref_Table (1 .. Pos (Last_Unit - Units.First + 2));
187 -- Sorted table of source dependencies. One extra entry in case we
188 -- have to add a dummy entry for System.
189
190 Num_Sdep : Nat := 0;
191 -- Number of active entries in Sdep_Table
192
193 -----------------------
194 -- Local Subprograms --
195 -----------------------
196
197 procedure Collect_Withs (Cunit : Node_Id);
198 -- Collect with lines for entries in the context clause of the
199 -- given compilation unit, Cunit.
200
201 procedure Update_Tables_From_ALI_File;
202 -- Given an up to date ALI file (see Up_To_Date_ALI_file_Exists
203 -- function), update tables from the ALI information, including
204 -- specifically the Compilation_Switches table.
205
206 function Up_To_Date_ALI_File_Exists return Boolean;
207 -- If there exists an ALI file that is up to date, then this function
208 -- initializes the tables in the ALI spec to contain information on
209 -- this file (using Scan_ALI) and returns True. If no file exists,
210 -- or the file is not up to date, then False is returned.
211
212 procedure Write_Unit_Information (Unit_Num : Unit_Number_Type);
213 -- Write out the library information for one unit for which code is
214 -- generated (includes unit line and with lines).
215
216 procedure Write_With_Lines;
217 -- Write out with lines collected by calls to Collect_Withs
218
219 -------------------
220 -- Collect_Withs --
221 -------------------
222
223 procedure Collect_Withs (Cunit : Node_Id) is
224 Item : Node_Id;
225 Unum : Unit_Number_Type;
226
227 begin
228 Item := First (Context_Items (Cunit));
229 while Present (Item) loop
230
231 -- Ada 2005 (AI-50217): limited with_clauses do not create
232 -- dependencies
233
234 if Nkind (Item) = N_With_Clause
235 and then not (Limited_Present (Item))
236 then
237 Unum := Get_Cunit_Unit_Number (Library_Unit (Item));
238 With_Flags (Unum) := True;
239
240 if Elaborate_Present (Item) then
241 Elab_Flags (Unum) := True;
242 end if;
243
244 if Elaborate_All_Present (Item) then
245 Elab_All_Flags (Unum) := True;
246 end if;
247
248 if Elaborate_All_Desirable (Cunit_Entity (Unum)) then
249 Elab_Des_Flags (Unum) := True;
250 end if;
251 end if;
252
253 Next (Item);
254 end loop;
255 end Collect_Withs;
256
257 --------------------------------
258 -- Up_To_Date_ALI_File_Exists --
259 --------------------------------
260
261 function Up_To_Date_ALI_File_Exists return Boolean is
262 Name : File_Name_Type;
263 Text : Text_Buffer_Ptr;
264 Id : Sdep_Id;
265 Sind : Source_File_Index;
266
267 begin
268 Opt.Check_Object_Consistency := True;
269 Read_Library_Info (Name, Text);
270
271 -- Return if we could not find an ALI file
272
273 if Text = null then
274 return False;
275 end if;
276
277 -- Return if ALI file has bad format
278
279 Initialize_ALI;
280
281 if Scan_ALI (Name, Text, False, Err => True) = No_ALI_Id then
282 return False;
283 end if;
284
285 -- If we have an OK ALI file, check if it is up to date
286 -- Note that we assume that the ALI read has all the entries
287 -- we have in our table, plus some additional ones (that can
288 -- come from expansion).
289
290 Id := First_Sdep_Entry;
291 for J in 1 .. Num_Sdep loop
292 Sind := Units.Table (Sdep_Table (J)).Source_Index;
293
294 while Sdep.Table (Id).Sfile /= File_Name (Sind) loop
295 if Id = Sdep.Last then
296 return False;
297 else
298 Id := Id + 1;
299 end if;
300 end loop;
301
302 if Sdep.Table (Id).Stamp /= Time_Stamp (Sind) then
303 return False;
304 end if;
305 end loop;
306
307 return True;
308 end Up_To_Date_ALI_File_Exists;
309
310 ---------------------------------
311 -- Update_Tables_From_ALI_File --
312 ---------------------------------
313
314 procedure Update_Tables_From_ALI_File is
315 begin
316 -- Build Compilation_Switches table
317
318 Compilation_Switches.Init;
319
320 for J in First_Arg_Entry .. Args.Last loop
321 Compilation_Switches.Increment_Last;
322 Compilation_Switches.Table (Compilation_Switches.Last) :=
323 Args.Table (J);
324 end loop;
325 end Update_Tables_From_ALI_File;
326
327 ----------------------------
328 -- Write_Unit_Information --
329 ----------------------------
330
331 procedure Write_Unit_Information (Unit_Num : Unit_Number_Type) is
332 Unode : constant Node_Id := Cunit (Unit_Num);
333 Ukind : constant Node_Kind := Nkind (Unit (Unode));
334 Uent : constant Entity_Id := Cunit_Entity (Unit_Num);
335 Pnode : Node_Id;
336
337 begin
338 Write_Info_Initiate ('U');
339 Write_Info_Char (' ');
340 Write_Info_Name (Unit_Name (Unit_Num));
341 Write_Info_Tab (25);
342 Write_Info_Name (Unit_File_Name (Unit_Num));
343
344 Write_Info_Tab (49);
345 Write_Info_Str (Version_Get (Unit_Num));
346
347 if (Is_Subprogram (Uent)
348 or else Ekind (Uent) = E_Package
349 or else Is_Generic_Unit (Uent))
350 and then Body_Needed_For_SAL (Uent)
351 then
352 Write_Info_Str (" BN");
353 end if;
354
355 if Dynamic_Elab (Unit_Num) then
356 Write_Info_Str (" DE");
357 end if;
358
359 -- We set the Elaborate_Body indication if either an explicit pragma
360 -- was present, or if this is an instantiation. RM 12.3(20) requires
361 -- that the body be immediately elaborated after the spec. We would
362 -- normally do that anyway, but the EB we generate here ensures that
363 -- this gets done even when we use the -p gnatbind switch.
364
365 if Has_Pragma_Elaborate_Body (Uent)
366 or else (Ukind = N_Package_Declaration
367 and then Is_Generic_Instance (Uent)
368 and then Present (Corresponding_Body (Unit (Unode))))
369 then
370 Write_Info_Str (" EB");
371 end if;
372
373 -- Now see if we should tell the binder that an elaboration entity
374 -- is present, which must be reset to true during elaboration. We
375 -- generate the indication if the following condition is met:
376
377 -- If this is a spec ...
378
379 if (Is_Subprogram (Uent)
380 or else
381 Ekind (Uent) = E_Package
382 or else
383 Is_Generic_Unit (Uent))
384
385 -- and an elaboration entity was declared ...
386
387 and then Present (Elaboration_Entity (Uent))
388
389 -- and either the elaboration flag is required ...
390
391 and then
392 (Elaboration_Entity_Required (Uent)
393
394 -- or this unit has elaboration code ...
395
396 or else not Has_No_Elaboration_Code (Unode)
397
398 -- or this unit has a separate body and this
399 -- body has elaboration code.
400
401 or else
402 (Ekind (Uent) = E_Package
403 and then Present (Body_Entity (Uent))
404 and then
405 not Has_No_Elaboration_Code
406 (Parent
407 (Declaration_Node
408 (Body_Entity (Uent))))))
409 then
410 Write_Info_Str (" EE");
411 end if;
412
413 if Has_No_Elaboration_Code (Unode) then
414 Write_Info_Str (" NE");
415 end if;
416
417 if Is_Preelaborated (Uent) then
418 Write_Info_Str (" PR");
419 end if;
420
421 if Is_Pure (Uent) then
422 Write_Info_Str (" PU");
423 end if;
424
425 if Has_RACW (Unit_Num) then
426 Write_Info_Str (" RA");
427 end if;
428
429 if Is_Remote_Call_Interface (Uent) then
430 Write_Info_Str (" RC");
431 end if;
432
433 if Is_Remote_Types (Uent) then
434 Write_Info_Str (" RT");
435 end if;
436
437 if Is_Shared_Passive (Uent) then
438 Write_Info_Str (" SP");
439 end if;
440
441 if Ukind = N_Subprogram_Declaration
442 or else Ukind = N_Subprogram_Body
443 then
444 Write_Info_Str (" SU");
445
446 elsif Ukind = N_Package_Declaration
447 or else
448 Ukind = N_Package_Body
449 then
450 -- If this is a wrapper package for a subprogram instantiation,
451 -- the user view is the subprogram. Note that in this case the
452 -- ali file contains both the spec and body of the instance.
453
454 if Is_Wrapper_Package (Uent) then
455 Write_Info_Str (" SU");
456 else
457 Write_Info_Str (" PK");
458 end if;
459
460 elsif Ukind = N_Generic_Package_Declaration then
461 Write_Info_Str (" PK");
462
463 end if;
464
465 if Ukind in N_Generic_Declaration
466 or else
467 (Present (Library_Unit (Unode))
468 and then
469 Nkind (Unit (Library_Unit (Unode))) in N_Generic_Declaration)
470 then
471 Write_Info_Str (" GE");
472 end if;
473
474 if not Is_Internal_File_Name (Unit_File_Name (Unit_Num), True) then
475 case Identifier_Casing (Source_Index (Unit_Num)) is
476 when All_Lower_Case => Write_Info_Str (" IL");
477 when All_Upper_Case => Write_Info_Str (" IU");
478 when others => null;
479 end case;
480
481 case Keyword_Casing (Source_Index (Unit_Num)) is
482 when Mixed_Case => Write_Info_Str (" KM");
483 when All_Upper_Case => Write_Info_Str (" KU");
484 when others => null;
485 end case;
486 end if;
487
488 if Initialize_Scalars then
489 Write_Info_Str (" IS");
490 end if;
491
492 Write_Info_EOL;
493
494 -- Generate with lines, first those that are directly with'ed
495
496 for J in With_Flags'Range loop
497 With_Flags (J) := False;
498 Elab_Flags (J) := False;
499 Elab_All_Flags (J) := False;
500 Elab_Des_Flags (J) := False;
501 end loop;
502
503 Collect_Withs (Unode);
504
505 -- For a body, we must also check for any subunits which belong to
506 -- it and which have context clauses of their own, since these
507 -- with'ed units are part of its own elaboration dependencies.
508
509 if Nkind (Unit (Unode)) in N_Unit_Body then
510 for S in Units.First .. Last_Unit loop
511
512 -- We are only interested in subunits.
513 -- For preproc. data and def. files, Cunit is Empty, so
514 -- we need to test that first.
515
516 if Cunit (S) /= Empty
517 and then Nkind (Unit (Cunit (S))) = N_Subunit
518 then
519 Pnode := Library_Unit (Cunit (S));
520
521 -- In gnatc mode, the errors in the subunits will not
522 -- have been recorded, but the analysis of the subunit
523 -- may have failed. There is no information to add to
524 -- ALI file in this case.
525
526 if No (Pnode) then
527 exit;
528 end if;
529
530 -- Find ultimate parent of the subunit
531
532 while Nkind (Unit (Pnode)) = N_Subunit loop
533 Pnode := Library_Unit (Pnode);
534 end loop;
535
536 -- See if it belongs to current unit, and if so, include
537 -- its with_clauses.
538
539 if Pnode = Unode then
540 Collect_Withs (Cunit (S));
541 end if;
542 end if;
543 end loop;
544 end if;
545
546 Write_With_Lines;
547
548 -- Output linker option lines
549
550 for J in 1 .. Linker_Option_Lines.Last loop
551 declare
552 S : constant Linker_Option_Entry :=
553 Linker_Option_Lines.Table (J);
554 C : Character;
555
556 begin
557 if S.Unit = Unit_Num then
558 Write_Info_Initiate ('L');
559 Write_Info_Str (" """);
560
561 for J in 1 .. String_Length (S.Option) loop
562 C := Get_Character (Get_String_Char (S.Option, J));
563
564 if C in Character'Val (16#20#) .. Character'Val (16#7E#)
565 and then C /= '{'
566 then
567 Write_Info_Char (C);
568
569 if C = '"' then
570 Write_Info_Char (C);
571 end if;
572
573 else
574 declare
575 Hex : constant array (0 .. 15) of Character :=
576 "0123456789ABCDEF";
577
578 begin
579 Write_Info_Char ('{');
580 Write_Info_Char (Hex (Character'Pos (C) / 16));
581 Write_Info_Char (Hex (Character'Pos (C) mod 16));
582 Write_Info_Char ('}');
583 end;
584 end if;
585 end loop;
586
587 Write_Info_Char ('"');
588 Write_Info_EOL;
589 end if;
590 end;
591 end loop;
592 end Write_Unit_Information;
593
594 ----------------------
595 -- Write_With_Lines --
596 ----------------------
597
598 procedure Write_With_Lines is
599 With_Table : Unit_Ref_Table (1 .. Pos (Last_Unit - Units.First + 1));
600 Num_Withs : Int := 0;
601 Unum : Unit_Number_Type;
602 Cunit : Node_Id;
603 Cunite : Entity_Id;
604 Uname : Unit_Name_Type;
605 Fname : File_Name_Type;
606 Pname : constant Unit_Name_Type :=
607 Get_Parent_Spec_Name (Unit_Name (Main_Unit));
608 Body_Fname : File_Name_Type;
609 Body_Index : Nat;
610
611 begin
612 -- Loop to build the with table. A with on the main unit itself
613 -- is ignored (AARM 10.2(14a)). Such a with-clause can occur if
614 -- the main unit is a subprogram with no spec, and a subunit of
615 -- it unecessarily withs the parent.
616
617 for J in Units.First + 1 .. Last_Unit loop
618
619 -- Add element to with table if it is with'ed or if it is the
620 -- parent spec of the main unit (case of main unit is a child
621 -- unit). The latter with is not needed for semantic purposes,
622 -- but is required by the binder for elaboration purposes.
623 -- For preproc. data and def. files, there is no Unit_Name,
624 -- check for that first.
625
626 if Unit_Name (J) /= No_Name
627 and then (With_Flags (J) or else Unit_Name (J) = Pname)
628 then
629 Num_Withs := Num_Withs + 1;
630 With_Table (Num_Withs) := J;
631 end if;
632 end loop;
633
634 -- Sort and output the table
635
636 Sort (With_Table (1 .. Num_Withs));
637
638 for J in 1 .. Num_Withs loop
639 Unum := With_Table (J);
640 Cunit := Units.Table (Unum).Cunit;
641 Cunite := Units.Table (Unum).Cunit_Entity;
642 Uname := Units.Table (Unum).Unit_Name;
643 Fname := Units.Table (Unum).Unit_File_Name;
644
645 Write_Info_Initiate ('W');
646 Write_Info_Char (' ');
647 Write_Info_Name (Uname);
648
649 -- Now we need to figure out the names of the files that contain
650 -- the with'ed unit. These will usually be the files for the body,
651 -- except in the case of a package that has no body.
652
653 if (Nkind (Unit (Cunit)) not in N_Generic_Declaration
654 and then
655 Nkind (Unit (Cunit)) not in N_Generic_Renaming_Declaration)
656 or else Generic_Separately_Compiled (Cunite)
657 then
658 Write_Info_Tab (25);
659
660 if Is_Spec_Name (Uname) then
661 Body_Fname :=
662 Get_File_Name
663 (Get_Body_Name (Uname),
664 Subunit => False, May_Fail => True);
665
666 Body_Index :=
667 Get_Unit_Index
668 (Get_Body_Name (Uname));
669
670 if Body_Fname = No_File then
671 Body_Fname := Get_File_Name (Uname, Subunit => False);
672 Body_Index := Get_Unit_Index (Uname);
673 end if;
674
675 else
676 Body_Fname := Get_File_Name (Uname, Subunit => False);
677 Body_Index := Get_Unit_Index (Uname);
678 end if;
679
680 -- A package is considered to have a body if it requires
681 -- a body or if a body is present in Ada 83 mode.
682
683 if Body_Required (Cunit)
684 or else (Ada_Version = Ada_83
685 and then Full_Source_Name (Body_Fname) /= No_File)
686 then
687 Write_Info_Name (Body_Fname);
688 Write_Info_Tab (49);
689 Write_Info_Name
690 (Lib_File_Name (Body_Fname, Body_Index));
691 else
692 Write_Info_Name (Fname);
693 Write_Info_Tab (49);
694 Write_Info_Name
695 (Lib_File_Name (Fname, Munit_Index (Unum)));
696 end if;
697
698 if Elab_Flags (Unum) then
699 Write_Info_Str (" E");
700 end if;
701
702 if Elab_All_Flags (Unum) then
703 Write_Info_Str (" EA");
704 end if;
705
706 if Elab_Des_Flags (Unum) then
707 Write_Info_Str (" ED");
708 end if;
709 end if;
710
711 Write_Info_EOL;
712 end loop;
713 end Write_With_Lines;
714
715 -- Start of processing for Write_ALI
716
717 begin
718 -- We never write an ALI file if the original operating mode was
719 -- syntax-only (-gnats switch used in compiler invocation line)
720
721 if Original_Operating_Mode = Check_Syntax then
722 return;
723 end if;
724
725 -- Build sorted source dependency table. We do this right away,
726 -- because it is referenced by Up_To_Date_ALI_File_Exists.
727
728 for Unum in Units.First .. Last_Unit loop
729 if Cunit_Entity (Unum) = Empty
730 or else not From_With_Type (Cunit_Entity (Unum))
731 then
732 Num_Sdep := Num_Sdep + 1;
733 Sdep_Table (Num_Sdep) := Unum;
734 end if;
735 end loop;
736
737 -- Sort the table so that the D lines are in order
738
739 Lib.Sort (Sdep_Table (1 .. Num_Sdep));
740
741 -- If we are not generating code, and there is an up to date
742 -- ali file accessible, read it, and acquire the compilation
743 -- arguments from this file.
744
745 if Operating_Mode /= Generate_Code then
746 if Up_To_Date_ALI_File_Exists then
747 Update_Tables_From_ALI_File;
748 return;
749 end if;
750 end if;
751
752 -- Otherwise acquire compilation arguments and prepare to write
753 -- out a new ali file.
754
755 Create_Output_Library_Info;
756
757 -- Output version line
758
759 Write_Info_Initiate ('V');
760 Write_Info_Str (" """);
761 Write_Info_Str (Verbose_Library_Version);
762 Write_Info_Char ('"');
763
764 Write_Info_EOL;
765
766 -- Output main program line if this is acceptable main program
767
768 Output_Main_Program_Line : declare
769 U : Node_Id := Unit (Units.Table (Main_Unit).Cunit);
770 S : Node_Id;
771
772 procedure M_Parameters;
773 -- Output parameters for main program line
774
775 ------------------
776 -- M_Parameters --
777 ------------------
778
779 procedure M_Parameters is
780 begin
781 if Main_Priority (Main_Unit) /= Default_Main_Priority then
782 Write_Info_Char (' ');
783 Write_Info_Nat (Main_Priority (Main_Unit));
784 end if;
785
786 if Opt.Time_Slice_Set then
787 Write_Info_Str (" T=");
788 Write_Info_Nat (Opt.Time_Slice_Value);
789 end if;
790
791 Write_Info_Str (" W=");
792 Write_Info_Char
793 (WC_Encoding_Letters (Wide_Character_Encoding_Method));
794
795 Write_Info_EOL;
796 end M_Parameters;
797
798 -- Start of processing for Output_Main_Program_Line
799
800 begin
801 if Nkind (U) = N_Subprogram_Body
802 or else (Nkind (U) = N_Package_Body
803 and then
804 (Nkind (Original_Node (U)) = N_Function_Instantiation
805 or else
806 Nkind (Original_Node (U)) =
807 N_Procedure_Instantiation))
808 then
809 -- If the unit is a subprogram instance, the entity for the
810 -- subprogram is the alias of the visible entity, which is the
811 -- related instance of the wrapper package. We retrieve the
812 -- subprogram declaration of the desired entity.
813
814 if Nkind (U) = N_Package_Body then
815 U := Parent (Parent (
816 Alias (Related_Instance (Defining_Unit_Name
817 (Specification (Unit (Library_Unit (Parent (U)))))))));
818 end if;
819
820 S := Specification (U);
821
822 if not Present (Parameter_Specifications (S)) then
823 if Nkind (S) = N_Procedure_Specification then
824 Write_Info_Initiate ('M');
825 Write_Info_Str (" P");
826 M_Parameters;
827
828 else
829 declare
830 Nam : Node_Id := Defining_Unit_Name (S);
831
832 begin
833 -- If it is a child unit, get its simple name.
834
835 if Nkind (Nam) = N_Defining_Program_Unit_Name then
836 Nam := Defining_Identifier (Nam);
837 end if;
838
839 if Is_Integer_Type (Etype (Nam)) then
840 Write_Info_Initiate ('M');
841 Write_Info_Str (" F");
842 M_Parameters;
843 end if;
844 end;
845 end if;
846 end if;
847 end if;
848 end Output_Main_Program_Line;
849
850 -- Write command argmument ('A') lines
851
852 for A in 1 .. Compilation_Switches.Last loop
853 Write_Info_Initiate ('A');
854 Write_Info_Char (' ');
855 Write_Info_Str (Compilation_Switches.Table (A).all);
856 Write_Info_Terminate;
857 end loop;
858
859 -- Output parameters ('P') line
860
861 Write_Info_Initiate ('P');
862
863 if Compilation_Errors then
864 Write_Info_Str (" CE");
865 end if;
866
867 if Opt.Detect_Blocking then
868 Write_Info_Str (" DB");
869 end if;
870
871 if Opt.Float_Format /= ' ' then
872 Write_Info_Str (" F");
873
874 if Opt.Float_Format = 'I' then
875 Write_Info_Char ('I');
876
877 elsif Opt.Float_Format_Long = 'D' then
878 Write_Info_Char ('D');
879
880 else
881 Write_Info_Char ('G');
882 end if;
883 end if;
884
885 if Tasking_Used
886 and then not Is_Predefined_File_Name (Unit_File_Name (Main_Unit))
887 then
888 if Locking_Policy /= ' ' then
889 Write_Info_Str (" L");
890 Write_Info_Char (Locking_Policy);
891 end if;
892
893 if Queuing_Policy /= ' ' then
894 Write_Info_Str (" Q");
895 Write_Info_Char (Queuing_Policy);
896 end if;
897
898 if Task_Dispatching_Policy /= ' ' then
899 Write_Info_Str (" T");
900 Write_Info_Char (Task_Dispatching_Policy);
901 Write_Info_Char (' ');
902 end if;
903 end if;
904
905 if not Object then
906 Write_Info_Str (" NO");
907 end if;
908
909 if No_Run_Time_Mode then
910 Write_Info_Str (" NR");
911 end if;
912
913 if Normalize_Scalars then
914 Write_Info_Str (" NS");
915 end if;
916
917 if Sec_Stack_Used then
918 Write_Info_Str (" SS");
919 end if;
920
921 if Unreserve_All_Interrupts then
922 Write_Info_Str (" UA");
923 end if;
924
925 if Exception_Mechanism /= Front_End_Setjmp_Longjmp_Exceptions then
926 if Unit_Exception_Table_Present then
927 Write_Info_Str (" UX");
928 end if;
929
930 Write_Info_Str (" ZX");
931 end if;
932
933 Write_Info_EOL;
934
935 -- Before outputting the restrictions line, update the setting of
936 -- the No_Elaboration_Code flag. Violations of this restriction
937 -- cannot be detected until after the backend has been called since
938 -- it is the backend that sets this flag. We have to check all units
939 -- for which we have generated code
940
941 for Unit in Units.First .. Last_Unit loop
942 if Units.Table (Unit).Generate_Code
943 or else Unit = Main_Unit
944 then
945 if not Has_No_Elaboration_Code (Cunit (Unit)) then
946 Main_Restrictions.Violated (No_Elaboration_Code) := True;
947 end if;
948 end if;
949 end loop;
950
951 -- Output first restrictions line
952
953 Write_Info_Initiate ('R');
954 Write_Info_Char (' ');
955
956 -- First the information for the boolean restrictions
957
958 for R in All_Boolean_Restrictions loop
959 if Main_Restrictions.Set (R)
960 and then not Restriction_Warnings (R)
961 then
962 Write_Info_Char ('r');
963 elsif Main_Restrictions.Violated (R) then
964 Write_Info_Char ('v');
965 else
966 Write_Info_Char ('n');
967 end if;
968 end loop;
969
970 -- And now the information for the parameter restrictions
971
972 for RP in All_Parameter_Restrictions loop
973 if Main_Restrictions.Set (RP)
974 and then not Restriction_Warnings (RP)
975 then
976 Write_Info_Char ('r');
977 Write_Info_Nat (Nat (Main_Restrictions.Value (RP)));
978 else
979 Write_Info_Char ('n');
980 end if;
981
982 if not Main_Restrictions.Violated (RP)
983 or else RP not in Checked_Parameter_Restrictions
984 then
985 Write_Info_Char ('n');
986 else
987 Write_Info_Char ('v');
988 Write_Info_Nat (Nat (Main_Restrictions.Count (RP)));
989
990 if Main_Restrictions.Unknown (RP) then
991 Write_Info_Char ('+');
992 end if;
993 end if;
994 end loop;
995
996 Write_Info_EOL;
997
998 -- Output R lines for No_Dependence entries
999
1000 for J in No_Dependence.First .. No_Dependence.Last loop
1001 if In_Extended_Main_Source_Unit (No_Dependence.Table (J).Unit)
1002 and then not No_Dependence.Table (J).Warn
1003 then
1004 Write_Info_Initiate ('R');
1005 Write_Info_Char (' ');
1006 Write_Unit_Name (No_Dependence.Table (J).Unit);
1007 Write_Info_EOL;
1008 end if;
1009 end loop;
1010
1011 -- Output interrupt state lines
1012
1013 for J in Interrupt_States.First .. Interrupt_States.Last loop
1014 Write_Info_Initiate ('I');
1015 Write_Info_Char (' ');
1016 Write_Info_Nat (Interrupt_States.Table (J).Interrupt_Number);
1017 Write_Info_Char (' ');
1018 Write_Info_Char (Interrupt_States.Table (J).Interrupt_State);
1019 Write_Info_Char (' ');
1020 Write_Info_Nat
1021 (Nat (Get_Logical_Line_Number
1022 (Interrupt_States.Table (J).Pragma_Loc)));
1023 Write_Info_EOL;
1024 end loop;
1025
1026 -- Loop through file table to output information for all units for which
1027 -- we have generated code, as marked by the Generate_Code flag.
1028
1029 for Unit in Units.First .. Last_Unit loop
1030 if Units.Table (Unit).Generate_Code
1031 or else Unit = Main_Unit
1032 then
1033 Write_Info_EOL; -- blank line
1034 Write_Unit_Information (Unit);
1035 end if;
1036 end loop;
1037
1038 Write_Info_EOL; -- blank line
1039
1040 -- Output external version reference lines
1041
1042 for J in 1 .. Version_Ref.Last loop
1043 Write_Info_Initiate ('E');
1044 Write_Info_Char (' ');
1045
1046 for K in 1 .. String_Length (Version_Ref.Table (J)) loop
1047 Write_Info_Char_Code (Get_String_Char (Version_Ref.Table (J), K));
1048 end loop;
1049
1050 Write_Info_EOL;
1051 end loop;
1052
1053 -- Prepare to output the source dependency lines
1054
1055 declare
1056 Unum : Unit_Number_Type;
1057 -- Number of unit being output
1058
1059 Sind : Source_File_Index;
1060 -- Index of corresponding source file
1061
1062 begin
1063 for J in 1 .. Num_Sdep loop
1064 Unum := Sdep_Table (J);
1065 Units.Table (Unum).Dependency_Num := J;
1066 Sind := Units.Table (Unum).Source_Index;
1067
1068 Write_Info_Initiate ('D');
1069 Write_Info_Char (' ');
1070
1071 -- Normal case of a unit entry with a source index
1072
1073 if Sind /= No_Source_File then
1074 Write_Info_Name (File_Name (Sind));
1075 Write_Info_Tab (25);
1076 Write_Info_Str (String (Time_Stamp (Sind)));
1077 Write_Info_Char (' ');
1078 Write_Info_Str (Get_Hex_String (Source_Checksum (Sind)));
1079
1080 -- If subunit, add unit name, omitting the %b at the end
1081
1082 if Present (Cunit (Unum))
1083 and then Nkind (Unit (Cunit (Unum))) = N_Subunit
1084 then
1085 Get_Decoded_Name_String (Unit_Name (Unum));
1086 Write_Info_Char (' ');
1087 Write_Info_Str (Name_Buffer (1 .. Name_Len - 2));
1088 end if;
1089
1090 -- If Source_Reference pragma used output information
1091
1092 if Num_SRef_Pragmas (Sind) > 0 then
1093 Write_Info_Char (' ');
1094
1095 if Num_SRef_Pragmas (Sind) = 1 then
1096 Write_Info_Nat (Int (First_Mapped_Line (Sind)));
1097 else
1098 Write_Info_Nat (0);
1099 end if;
1100
1101 Write_Info_Char (':');
1102 Write_Info_Name (Reference_Name (Sind));
1103 end if;
1104
1105 -- Case where there is no source index (happens for missing
1106 -- files). In this case we write a dummy time stamp.
1107
1108 else
1109 Write_Info_Name (Unit_File_Name (Unum));
1110 Write_Info_Tab (25);
1111 Write_Info_Str (String (Dummy_Time_Stamp));
1112 Write_Info_Char (' ');
1113 Write_Info_Str (Get_Hex_String (0));
1114 end if;
1115
1116 Write_Info_EOL;
1117 end loop;
1118 end;
1119
1120 Output_References;
1121 Write_Info_Terminate;
1122 Close_Output_Library_Info;
1123 end Write_ALI;
1124
1125 ---------------------
1126 -- Write_Unit_Name --
1127 ---------------------
1128
1129 procedure Write_Unit_Name (N : Node_Id) is
1130 begin
1131 if Nkind (N) = N_Identifier then
1132 Write_Info_Name (Chars (N));
1133
1134 else
1135 pragma Assert (Nkind (N) = N_Selected_Component);
1136 Write_Unit_Name (Prefix (N));
1137 Write_Info_Char ('.');
1138 Write_Unit_Name (Selector_Name (N));
1139 end if;
1140 end Write_Unit_Name;
1141
1142 end Lib.Writ;
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