1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2007, Free Software Foundation, Inc. --
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 3, 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 COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
27 with ALI.Util; use ALI.Util;
28 with Bcheck; use Bcheck;
29 with Binde; use Binde;
30 with Binderr; use Binderr;
31 with Bindgen; use Bindgen;
33 with Butil; use Butil;
34 with Casing; use Casing;
36 with Debug; use Debug;
38 with Fname; use Fname;
39 with Namet; use Namet;
41 with Osint; use Osint;
42 with Osint.B; use Osint.B;
43 with Output; use Output;
44 with Rident; use Rident;
46 with Switch; use Switch;
47 with Switch.B; use Switch.B;
48 with Targparm; use Targparm;
49 with Types; use Types;
51 with System.Case_Util; use System.Case_Util;
52 with System.OS_Lib; use System.OS_Lib;
54 with Ada.Command_Line.Response_File; use Ada.Command_Line;
58 Total_Errors : Nat := 0;
59 -- Counts total errors in all files
61 Total_Warnings : Nat := 0;
62 -- Total warnings in all files
64 Main_Lib_File : File_Name_Type;
65 -- Current main library file
67 Std_Lib_File : File_Name_Type;
70 Text : Text_Buffer_Ptr;
73 Output_File_Name_Seen : Boolean := False;
74 Output_File_Name : String_Ptr := new String'("");
76 L_Switch_Seen : Boolean := False;
78 Mapping_File : String_Ptr := null;
80 function Gnatbind_Supports_Auto_Init return Boolean;
81 -- Indicates if automatic initialization of elaboration procedure
82 -- through the constructor mechanism is possible on the platform.
84 procedure List_Applicable_Restrictions;
85 -- List restrictions that apply to this partition if option taken
87 procedure Scan_Bind_Arg (Argv : String);
88 -- Scan and process binder specific arguments. Argv is a single argument.
89 -- All the one character arguments are still handled by Switch. This
90 -- routine handles -aO -aI and -I-. The lower bound of Argv must be 1.
92 function Is_Cross_Compiler return Boolean;
93 -- Returns True iff this is a cross-compiler
95 ---------------------------------
96 -- Gnatbind_Supports_Auto_Init --
97 ---------------------------------
99 function Gnatbind_Supports_Auto_Init return Boolean is
100 function gnat_binder_supports_auto_init return Integer;
101 pragma Import (C, gnat_binder_supports_auto_init,
102 "__gnat_binder_supports_auto_init");
104 return gnat_binder_supports_auto_init /= 0;
105 end Gnatbind_Supports_Auto_Init;
107 -----------------------
108 -- Is_Cross_Compiler --
109 -----------------------
111 function Is_Cross_Compiler return Boolean is
112 Cross_Compiler : Integer;
113 pragma Import (C, Cross_Compiler, "__gnat_is_cross_compiler");
115 return Cross_Compiler = 1;
116 end Is_Cross_Compiler;
118 ----------------------------------
119 -- List_Applicable_Restrictions --
120 ----------------------------------
122 procedure List_Applicable_Restrictions is
124 -- Define those restrictions that should be output if the gnatbind
125 -- -r switch is used. Not all restrictions are output for the reasons
126 -- given below in the list, and this array is used to test whether
127 -- the corresponding pragma should be listed. True means that it
128 -- should not be listed.
130 No_Restriction_List : constant array (All_Restrictions) of Boolean :=
131 (No_Exception_Propagation => True,
132 -- Modifies code resulting in different exception semantics
134 No_Exceptions => True,
135 -- Has unexpected Suppress (All_Checks) effect
137 No_Implicit_Conditionals => True,
138 -- This could modify and pessimize generated code
140 No_Implicit_Dynamic_Code => True,
141 -- This could modify and pessimize generated code
143 No_Implicit_Loops => True,
144 -- This could modify and pessimize generated code
146 No_Recursion => True,
147 -- Not checkable at compile time
149 No_Reentrancy => True,
150 -- Not checkable at compile time
152 Max_Entry_Queue_Length => True,
153 -- Not checkable at compile time
155 Max_Storage_At_Blocking => True,
156 -- Not checkable at compile time
160 Additional_Restrictions_Listed : Boolean := False;
161 -- Set True if we have listed header for restrictions
164 -- Loop through restrictions
166 for R in All_Restrictions loop
167 if not No_Restriction_List (R) then
169 -- We list a restriction if it is not violated, or if
170 -- it is violated but the violation count is exactly known.
172 if Cumulative_Restrictions.Violated (R) = False
173 or else (R in All_Parameter_Restrictions
175 Cumulative_Restrictions.Unknown (R) = False)
177 if not Additional_Restrictions_Listed then
180 ("The following additional restrictions may be" &
181 " applied to this partition:");
182 Additional_Restrictions_Listed := True;
185 Write_Str ("pragma Restrictions (");
188 S : constant String := Restriction_Id'Image (R);
190 Name_Len := S'Length;
191 Name_Buffer (1 .. Name_Len) := S;
194 Set_Casing (Mixed_Case);
195 Write_Str (Name_Buffer (1 .. Name_Len));
197 if R in All_Parameter_Restrictions then
199 Write_Int (Int (Cumulative_Restrictions.Count (R)));
207 end List_Applicable_Restrictions;
213 procedure Scan_Bind_Arg (Argv : String) is
214 pragma Assert (Argv'First = 1);
217 -- Now scan arguments that are specific to the binder and are not
218 -- handled by the common circuitry in Switch.
220 if Opt.Output_File_Name_Present
221 and then not Output_File_Name_Seen
223 Output_File_Name_Seen := True;
226 or else (Argv'Length >= 1 and then Argv (1) = '-')
228 Fail ("output File_Name missing after -o");
231 Output_File_Name := new String'(Argv);
234 elsif Argv'Length >= 2 and then Argv (1) = '-' then
238 if Argv (2 .. Argv'Last) = "I-" then
239 Opt.Look_In_Primary_Dir := False;
243 elsif Argv (2) = 'I' then
244 Add_Src_Search_Dir (Argv (3 .. Argv'Last));
245 Add_Lib_Search_Dir (Argv (3 .. Argv'Last));
249 elsif Argv (2) = 'L' then
250 if Argv'Length >= 3 then
252 -- Remember that the -L switch was specified, so that if this
253 -- is on OpenVMS, the export names are put in uppercase.
254 -- This is not known before the target parameters are read.
256 L_Switch_Seen := True;
258 Opt.Bind_For_Library := True;
260 new String'(Argv (3 .. Argv'Last) & Opt.Ada_Init_Suffix);
261 Opt.Ada_Final_Name :=
262 new String'(Argv (3 .. Argv'Last) & Opt.Ada_Final_Suffix);
264 new String'(Argv (3 .. Argv'Last) & Opt.Ada_Main_Name_Suffix);
266 -- This option (-Lxxx) implies -n
268 Opt.Bind_Main_Program := False;
272 ("Prefix of initialization and finalization " &
273 "procedure names missing in -L");
276 -- -Sin -Slo -Shi -Sxx -Sev
278 elsif Argv'Length = 4
279 and then Argv (2) = 'S'
282 C1 : Character := Argv (3);
283 C2 : Character := Argv (4);
286 -- Fold to upper case
288 if C1 in 'a' .. 'z' then
289 C1 := Character'Val (Character'Pos (C1) - 32);
292 if C2 in 'a' .. 'z' then
293 C2 := Character'Val (Character'Pos (C2) - 32);
296 -- Test valid option and set mode accordingly
298 if C1 = 'E' and then C2 = 'V' then
301 elsif C1 = 'I' and then C2 = 'N' then
304 elsif C1 = 'L' and then C2 = 'O' then
307 elsif C1 = 'H' and then C2 = 'I' then
310 elsif (C1 in '0' .. '9' or else C1 in 'A' .. 'F')
312 (C2 in '0' .. '9' or else C2 in 'A' .. 'F')
316 -- Invalid -S switch, let Switch give error, set defalut of IN
319 Scan_Binder_Switches (Argv);
324 Initialize_Scalars_Mode1 := C1;
325 Initialize_Scalars_Mode2 := C2;
330 elsif Argv'Length >= 3
331 and then Argv (2 .. 3) = "aI"
333 Add_Src_Search_Dir (Argv (4 .. Argv'Last));
337 elsif Argv'Length >= 3
338 and then Argv (2 .. 3) = "aO"
340 Add_Lib_Search_Dir (Argv (4 .. Argv'Last));
344 elsif Argv (2 .. Argv'Last) = "nostdlib" then
345 Opt.No_Stdlib := True;
349 elsif Argv (2 .. Argv'Last) = "nostdinc" then
350 Opt.No_Stdinc := True;
354 elsif Argv (2 .. Argv'Last) = "static" then
355 Opt.Shared_Libgnat := False;
359 elsif Argv (2 .. Argv'Last) = "shared" then
360 Opt.Shared_Libgnat := True;
364 elsif Argv'Length >= 4 and then Argv (2 .. 3) = "F=" then
365 if Mapping_File /= null then
366 Fail ("cannot specify several mapping files");
369 Mapping_File := new String'(Argv (4 .. Argv'Last));
373 elsif Argv'Length >= 3 and then Argv (2) = 'M' then
374 if not Is_Cross_Compiler then
376 ("gnatbind: -M not expected to be used on native platforms");
379 Opt.Bind_Alternate_Main_Name := True;
380 Opt.Alternate_Main_Name := new String'(Argv (3 .. Argv'Last));
382 -- All other options are single character and are handled by
383 -- Scan_Binder_Switches.
386 Scan_Binder_Switches (Argv);
389 -- Not a switch, so must be a file name (if non-empty)
391 elsif Argv'Length /= 0 then
393 and then Argv (Argv'Last - 3 .. Argv'Last) = ".ali"
397 Add_File (Argv & ".ali");
402 -- Start of processing for Gnatbind
406 -- Set default for Shared_Libgnat option
409 Shared_Libgnat_Default : Character;
411 (C, Shared_Libgnat_Default, "__gnat_shared_libgnat_default");
413 SHARED : constant Character := 'H';
414 STATIC : constant Character := 'T';
418 (Shared_Libgnat_Default = SHARED
420 Shared_Libgnat_Default = STATIC);
421 Shared_Libgnat := (Shared_Libgnat_Default = SHARED);
424 -- Scan the switches and arguments
426 -- First, scan to detect --version and/or --help
428 Check_Version_And_Help ("GNATBIND", "1995", Bindusg.Display'Access);
430 -- Use low level argument routines to avoid dragging in the secondary stack
433 Scan_Args : while Next_Arg < Arg_Count loop
435 Next_Argv : String (1 .. Len_Arg (Next_Arg));
437 Fill_Arg (Next_Argv'Address, Next_Arg);
439 if Next_Argv'Length > 0 then
440 if Next_Argv (1) = '@' then
441 if Next_Argv'Length > 1 then
443 Arguments : constant Argument_List :=
444 Response_File.Arguments_From
445 (Response_File_Name =>
446 Next_Argv (2 .. Next_Argv'Last),
448 Ignore_Non_Existing_Files => True);
450 for J in Arguments'Range loop
451 Scan_Bind_Arg (Arguments (J).all);
457 Scan_Bind_Arg (Next_Argv);
462 Next_Arg := Next_Arg + 1;
465 if Use_Pragma_Linker_Constructor then
466 if Bind_Main_Program then
467 Fail ("switch -a must be used in conjunction with -n or -Lxxx");
469 elsif not Gnatbind_Supports_Auto_Init then
470 Fail ("automatic initialisation of elaboration " &
471 "not supported on this platform");
475 -- Test for trailing -o switch
477 if Opt.Output_File_Name_Present
478 and then not Output_File_Name_Seen
480 Fail ("output file name missing after -o");
483 -- Output usage if requested
485 if Usage_Requested then
489 -- Check that the Ada binder file specified has extension .adb and that
490 -- the C binder file has extension .c
492 if Opt.Output_File_Name_Present
493 and then Output_File_Name_Seen
495 Check_Extensions : declare
496 Length : constant Natural := Output_File_Name'Length;
497 Last : constant Natural := Output_File_Name'Last;
500 if Ada_Bind_File then
502 or else Output_File_Name (Last - 3 .. Last) /= ".adb"
504 Fail ("output file name should have .adb extension");
509 or else Output_File_Name (Last - 1 .. Last) /= ".c"
511 Fail ("output file name should have .c extension");
514 end Check_Extensions;
517 Osint.Add_Default_Search_Dirs;
519 -- Carry out package initializations. These are initializations which
520 -- might logically be performed at elaboration time, but Namet at least
521 -- can't be done that way (because it is used in the Compiler), and we
522 -- decide to be consistent. Like elaboration, the order in which these
523 -- calls are made is in some cases important.
529 -- Acquire target parameters
531 Targparm.Get_Target_Parameters;
533 -- Initialize Cumulative_Restrictions with the restrictions on the target
534 -- scanned from the system.ads file. Then as we read ALI files, we will
535 -- accumulate additional restrictions specified in other files.
537 Cumulative_Restrictions := Targparm.Restrictions_On_Target;
539 -- On OpenVMS, when -L is used, all external names used in pragmas Export
540 -- are in upper case. The reason is that on OpenVMS, the macro-assembler
541 -- MACASM-32, used to build Stand-Alone Libraries, only understands
544 if L_Switch_Seen and then OpenVMS_On_Target then
545 To_Upper (Opt.Ada_Init_Name.all);
546 To_Upper (Opt.Ada_Final_Name.all);
547 To_Upper (Opt.Ada_Main_Name.all);
550 -- Acquire configurable run-time mode
552 if Configurable_Run_Time_On_Target then
553 Configurable_Run_Time_Mode := True;
556 -- Output copyright notice if in verbose mode
560 Display_Version ("GNATBIND", "1995");
563 -- Output usage information if no files
565 if not More_Lib_Files then
567 Exit_Program (E_Fatal);
570 -- If a mapping file was specified, initialize the file mapping
572 if Mapping_File /= null then
573 Fmap.Initialize (Mapping_File.all);
576 -- The block here is to catch the Unrecoverable_Error exception in the
577 -- case where we exceed the maximum number of permissible errors or some
578 -- other unrecoverable error occurs.
581 -- Initialize binder packages
585 Initialize_ALI_Source;
593 while More_Lib_Files loop
594 Main_Lib_File := Next_Main_Lib_File;
598 Write_Str ("Checking: ");
600 Write_Str ("Binding: ");
603 Write_Name (Main_Lib_File);
607 Text := Read_Library_Info (Main_Lib_File, True);
611 pragma Warnings (Off, Id);
619 Ignore_Errors => Debug_Flag_I);
627 if No_Run_Time_Mode then
629 -- Set standard configuration parameters
631 Suppress_Standard_Library_On_Target := True;
632 Configurable_Run_Time_Mode := True;
635 -- For main ALI files, even if they are interfaces, we get their
636 -- dependencies. To be sure, we reset the Interface flag for all main
639 for Index in ALIs.First .. ALIs.Last loop
640 ALIs.Table (Index).SAL_Interface := False;
643 -- Add System.Standard_Library to list to ensure that these files are
644 -- included in the bind, even if not directly referenced from Ada code
645 -- This is suppressed if the appropriate targparm switch is set.
647 if not Suppress_Standard_Library_On_Target then
648 Name_Buffer (1 .. 12) := "s-stalib.ali";
650 Std_Lib_File := Name_Find;
651 Text := Read_Library_Info (Std_Lib_File, True);
655 pragma Warnings (Off, Id);
664 Ignore_Errors => Debug_Flag_I);
670 -- Acquire all information in ALI files that have been read in
672 for Index in ALIs.First .. ALIs.Last loop
676 -- Quit if some file needs compiling
678 if No_Object_Specified then
679 raise Unrecoverable_Error;
682 -- Build source file table from the ALI files we have read in
686 -- Check that main library file is a suitable main program
689 and then ALIs.Table (ALIs.First).Main_Program = None
690 and then not No_Main_Subprogram
692 Error_Msg_File_1 := Main_Lib_File;
693 Error_Msg ("% does not contain a unit that can be a main program");
696 -- Perform consistency and correctness checks
698 Check_Duplicated_Subunits;
701 Check_Configuration_Consistency;
703 -- List restrictions that could be applied to this partition
705 if List_Restrictions then
706 List_Applicable_Restrictions;
709 -- Complete bind if no errors
711 if Errors_Detected = 0 then
714 if Errors_Detected = 0 then
715 -- Display elaboration order if -l was specified
717 if Elab_Order_Output then
718 if not Zero_Formatting then
720 Write_Str ("ELABORATION ORDER");
724 for J in Elab_Order.First .. Elab_Order.Last loop
725 if not Units.Table (Elab_Order.Table (J)).SAL_Interface then
726 if not Zero_Formatting then
731 (Units.Table (Elab_Order.Table (J)).Uname);
736 if not Zero_Formatting then
741 if not Check_Only then
742 Gen_Output_File (Output_File_Name.all);
745 -- Display list of sources in the closure (except predefined
746 -- sources) if -R was used.
749 if not Zero_Formatting then
751 Write_Str ("REFERENCED SOURCES");
755 for J in reverse Elab_Order.First .. Elab_Order.Last loop
757 -- Do not include the sources of the runtime
759 if not Is_Internal_File_Name
760 (Units.Table (Elab_Order.Table (J)).Sfile)
762 if not Zero_Formatting then
768 (Units.Table (Elab_Order.Table (J)).Sfile));
773 if not Zero_Formatting then
780 Total_Errors := Total_Errors + Errors_Detected;
781 Total_Warnings := Total_Warnings + Warnings_Detected;
784 when Unrecoverable_Error =>
785 Total_Errors := Total_Errors + Errors_Detected;
786 Total_Warnings := Total_Warnings + Warnings_Detected;
789 -- All done. Set proper exit status
794 if Total_Errors > 0 then
795 Exit_Program (E_Errors);
797 elsif Total_Warnings > 0 then
798 Exit_Program (E_Warnings);
801 -- Do not call Exit_Program (E_Success), so that finalization occurs