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 First_Main_Lib_File : File_Name_Type := No_File;
68 -- The first library file, that should be a main subprogram if neither -n
71 Std_Lib_File : File_Name_Type;
74 Text : Text_Buffer_Ptr;
77 Output_File_Name_Seen : Boolean := False;
78 Output_File_Name : String_Ptr := new String'("");
80 L_Switch_Seen : Boolean := False;
82 Mapping_File : String_Ptr := null;
84 function Gnatbind_Supports_Auto_Init return Boolean;
85 -- Indicates if automatic initialization of elaboration procedure
86 -- through the constructor mechanism is possible on the platform.
88 procedure List_Applicable_Restrictions;
89 -- List restrictions that apply to this partition if option taken
91 procedure Scan_Bind_Arg (Argv : String);
92 -- Scan and process binder specific arguments. Argv is a single argument.
93 -- All the one character arguments are still handled by Switch. This
94 -- routine handles -aO -aI and -I-. The lower bound of Argv must be 1.
96 function Is_Cross_Compiler return Boolean;
97 -- Returns True iff this is a cross-compiler
99 ---------------------------------
100 -- Gnatbind_Supports_Auto_Init --
101 ---------------------------------
103 function Gnatbind_Supports_Auto_Init return Boolean is
104 function gnat_binder_supports_auto_init return Integer;
105 pragma Import (C, gnat_binder_supports_auto_init,
106 "__gnat_binder_supports_auto_init");
108 return gnat_binder_supports_auto_init /= 0;
109 end Gnatbind_Supports_Auto_Init;
111 -----------------------
112 -- Is_Cross_Compiler --
113 -----------------------
115 function Is_Cross_Compiler return Boolean is
116 Cross_Compiler : Integer;
117 pragma Import (C, Cross_Compiler, "__gnat_is_cross_compiler");
119 return Cross_Compiler = 1;
120 end Is_Cross_Compiler;
122 ----------------------------------
123 -- List_Applicable_Restrictions --
124 ----------------------------------
126 procedure List_Applicable_Restrictions is
128 -- Define those restrictions that should be output if the gnatbind
129 -- -r switch is used. Not all restrictions are output for the reasons
130 -- given below in the list, and this array is used to test whether
131 -- the corresponding pragma should be listed. True means that it
132 -- should not be listed.
134 No_Restriction_List : constant array (All_Restrictions) of Boolean :=
135 (No_Exception_Propagation => True,
136 -- Modifies code resulting in different exception semantics
138 No_Exceptions => True,
139 -- Has unexpected Suppress (All_Checks) effect
141 No_Implicit_Conditionals => True,
142 -- This could modify and pessimize generated code
144 No_Implicit_Dynamic_Code => True,
145 -- This could modify and pessimize generated code
147 No_Implicit_Loops => True,
148 -- This could modify and pessimize generated code
150 No_Recursion => True,
151 -- Not checkable at compile time
153 No_Reentrancy => True,
154 -- Not checkable at compile time
156 Max_Entry_Queue_Length => True,
157 -- Not checkable at compile time
159 Max_Storage_At_Blocking => True,
160 -- Not checkable at compile time
164 Additional_Restrictions_Listed : Boolean := False;
165 -- Set True if we have listed header for restrictions
168 -- Loop through restrictions
170 for R in All_Restrictions loop
171 if not No_Restriction_List (R) then
173 -- We list a restriction if it is not violated, or if
174 -- it is violated but the violation count is exactly known.
176 if Cumulative_Restrictions.Violated (R) = False
177 or else (R in All_Parameter_Restrictions
179 Cumulative_Restrictions.Unknown (R) = False)
181 if not Additional_Restrictions_Listed then
184 ("The following additional restrictions may be" &
185 " applied to this partition:");
186 Additional_Restrictions_Listed := True;
189 Write_Str ("pragma Restrictions (");
192 S : constant String := Restriction_Id'Image (R);
194 Name_Len := S'Length;
195 Name_Buffer (1 .. Name_Len) := S;
198 Set_Casing (Mixed_Case);
199 Write_Str (Name_Buffer (1 .. Name_Len));
201 if R in All_Parameter_Restrictions then
203 Write_Int (Int (Cumulative_Restrictions.Count (R)));
211 end List_Applicable_Restrictions;
217 procedure Scan_Bind_Arg (Argv : String) is
218 pragma Assert (Argv'First = 1);
221 -- Now scan arguments that are specific to the binder and are not
222 -- handled by the common circuitry in Switch.
224 if Opt.Output_File_Name_Present
225 and then not Output_File_Name_Seen
227 Output_File_Name_Seen := True;
230 or else (Argv'Length >= 1 and then Argv (1) = '-')
232 Fail ("output File_Name missing after -o");
235 Output_File_Name := new String'(Argv);
238 elsif Argv'Length >= 2 and then Argv (1) = '-' then
242 if Argv (2 .. Argv'Last) = "I-" then
243 Opt.Look_In_Primary_Dir := False;
247 elsif Argv (2) = 'I' then
248 Add_Src_Search_Dir (Argv (3 .. Argv'Last));
249 Add_Lib_Search_Dir (Argv (3 .. Argv'Last));
253 elsif Argv (2) = 'L' then
254 if Argv'Length >= 3 then
256 -- Remember that the -L switch was specified, so that if this
257 -- is on OpenVMS, the export names are put in uppercase.
258 -- This is not known before the target parameters are read.
260 L_Switch_Seen := True;
262 Opt.Bind_For_Library := True;
264 new String'(Argv (3 .. Argv'Last) & Opt.Ada_Init_Suffix);
265 Opt.Ada_Final_Name :=
266 new String'(Argv (3 .. Argv'Last) & Opt.Ada_Final_Suffix);
268 new String'(Argv (3 .. Argv'Last) & Opt.Ada_Main_Name_Suffix);
270 -- This option (-Lxxx) implies -n
272 Opt.Bind_Main_Program := False;
276 ("Prefix of initialization and finalization " &
277 "procedure names missing in -L");
280 -- -Sin -Slo -Shi -Sxx -Sev
282 elsif Argv'Length = 4
283 and then Argv (2) = 'S'
286 C1 : Character := Argv (3);
287 C2 : Character := Argv (4);
290 -- Fold to upper case
292 if C1 in 'a' .. 'z' then
293 C1 := Character'Val (Character'Pos (C1) - 32);
296 if C2 in 'a' .. 'z' then
297 C2 := Character'Val (Character'Pos (C2) - 32);
300 -- Test valid option and set mode accordingly
302 if C1 = 'E' and then C2 = 'V' then
305 elsif C1 = 'I' and then C2 = 'N' then
308 elsif C1 = 'L' and then C2 = 'O' then
311 elsif C1 = 'H' and then C2 = 'I' then
314 elsif (C1 in '0' .. '9' or else C1 in 'A' .. 'F')
316 (C2 in '0' .. '9' or else C2 in 'A' .. 'F')
320 -- Invalid -S switch, let Switch give error, set default of IN
323 Scan_Binder_Switches (Argv);
328 Initialize_Scalars_Mode1 := C1;
329 Initialize_Scalars_Mode2 := C2;
334 elsif Argv'Length >= 3
335 and then Argv (2 .. 3) = "aI"
337 Add_Src_Search_Dir (Argv (4 .. Argv'Last));
341 elsif Argv'Length >= 3
342 and then Argv (2 .. 3) = "aO"
344 Add_Lib_Search_Dir (Argv (4 .. Argv'Last));
348 elsif Argv (2 .. Argv'Last) = "nostdlib" then
349 Opt.No_Stdlib := True;
353 elsif Argv (2 .. Argv'Last) = "nostdinc" then
354 Opt.No_Stdinc := True;
358 elsif Argv (2 .. Argv'Last) = "static" then
359 Opt.Shared_Libgnat := False;
363 elsif Argv (2 .. Argv'Last) = "shared" then
364 Opt.Shared_Libgnat := True;
368 elsif Argv'Length >= 4 and then Argv (2 .. 3) = "F=" then
369 if Mapping_File /= null then
370 Fail ("cannot specify several mapping files");
373 Mapping_File := new String'(Argv (4 .. Argv'Last));
377 elsif Argv'Length >= 3 and then Argv (2) = 'M' then
378 if not Is_Cross_Compiler then
380 ("gnatbind: -M not expected to be used on native platforms");
383 Opt.Bind_Alternate_Main_Name := True;
384 Opt.Alternate_Main_Name := new String'(Argv (3 .. Argv'Last));
386 -- All other options are single character and are handled by
387 -- Scan_Binder_Switches.
390 Scan_Binder_Switches (Argv);
393 -- Not a switch, so must be a file name (if non-empty)
395 elsif Argv'Length /= 0 then
397 and then Argv (Argv'Last - 3 .. Argv'Last) = ".ali"
401 Add_File (Argv & ".ali");
406 procedure Check_Version_And_Help is
407 new Check_Version_And_Help_G (Bindusg.Display);
409 -- Start of processing for Gnatbind
413 -- Set default for Shared_Libgnat option
416 Shared_Libgnat_Default : Character;
418 (C, Shared_Libgnat_Default, "__gnat_shared_libgnat_default");
420 SHARED : constant Character := 'H';
421 STATIC : constant Character := 'T';
425 (Shared_Libgnat_Default = SHARED
427 Shared_Libgnat_Default = STATIC);
428 Shared_Libgnat := (Shared_Libgnat_Default = SHARED);
431 -- Scan the switches and arguments
433 -- First, scan to detect --version and/or --help
435 Check_Version_And_Help ("GNATBIND", "1995");
437 -- Use low level argument routines to avoid dragging in the secondary stack
440 Scan_Args : while Next_Arg < Arg_Count loop
442 Next_Argv : String (1 .. Len_Arg (Next_Arg));
444 Fill_Arg (Next_Argv'Address, Next_Arg);
446 if Next_Argv'Length > 0 then
447 if Next_Argv (1) = '@' then
448 if Next_Argv'Length > 1 then
450 Arguments : constant Argument_List :=
451 Response_File.Arguments_From
452 (Response_File_Name =>
453 Next_Argv (2 .. Next_Argv'Last),
455 Ignore_Non_Existing_Files => True);
457 for J in Arguments'Range loop
458 Scan_Bind_Arg (Arguments (J).all);
464 Scan_Bind_Arg (Next_Argv);
469 Next_Arg := Next_Arg + 1;
472 if Use_Pragma_Linker_Constructor then
473 if Bind_Main_Program then
474 Fail ("switch -a must be used in conjunction with -n or -Lxxx");
476 elsif not Gnatbind_Supports_Auto_Init then
477 Fail ("automatic initialisation of elaboration " &
478 "not supported on this platform");
482 -- Test for trailing -o switch
484 if Opt.Output_File_Name_Present
485 and then not Output_File_Name_Seen
487 Fail ("output file name missing after -o");
490 -- Output usage if requested
492 if Usage_Requested then
496 -- Check that the Ada binder file specified has extension .adb and that
497 -- the C binder file has extension .c
499 if Opt.Output_File_Name_Present
500 and then Output_File_Name_Seen
502 Check_Extensions : declare
503 Length : constant Natural := Output_File_Name'Length;
504 Last : constant Natural := Output_File_Name'Last;
507 if Ada_Bind_File then
509 or else Output_File_Name (Last - 3 .. Last) /= ".adb"
511 Fail ("output file name should have .adb extension");
516 or else Output_File_Name (Last - 1 .. Last) /= ".c"
518 Fail ("output file name should have .c extension");
521 end Check_Extensions;
524 Osint.Add_Default_Search_Dirs;
526 -- Carry out package initializations. These are initializations which
527 -- might logically be performed at elaboration time, but Namet at least
528 -- can't be done that way (because it is used in the Compiler), and we
529 -- decide to be consistent. Like elaboration, the order in which these
530 -- calls are made is in some cases important.
536 -- Acquire target parameters
538 Targparm.Get_Target_Parameters;
540 -- Initialize Cumulative_Restrictions with the restrictions on the target
541 -- scanned from the system.ads file. Then as we read ALI files, we will
542 -- accumulate additional restrictions specified in other files.
544 Cumulative_Restrictions := Targparm.Restrictions_On_Target;
546 -- On OpenVMS, when -L is used, all external names used in pragmas Export
547 -- are in upper case. The reason is that on OpenVMS, the macro-assembler
548 -- MACASM-32, used to build Stand-Alone Libraries, only understands
551 if L_Switch_Seen and then OpenVMS_On_Target then
552 To_Upper (Opt.Ada_Init_Name.all);
553 To_Upper (Opt.Ada_Final_Name.all);
554 To_Upper (Opt.Ada_Main_Name.all);
557 -- Acquire configurable run-time mode
559 if Configurable_Run_Time_On_Target then
560 Configurable_Run_Time_Mode := True;
563 -- Output copyright notice if in verbose mode
567 Display_Version ("GNATBIND", "1995");
570 -- Output usage information if no files
572 if not More_Lib_Files then
574 Exit_Program (E_Fatal);
577 -- If a mapping file was specified, initialize the file mapping
579 if Mapping_File /= null then
580 Fmap.Initialize (Mapping_File.all);
583 -- The block here is to catch the Unrecoverable_Error exception in the
584 -- case where we exceed the maximum number of permissible errors or some
585 -- other unrecoverable error occurs.
588 -- Initialize binder packages
592 Initialize_ALI_Source;
600 while More_Lib_Files loop
601 Main_Lib_File := Next_Main_Lib_File;
603 if First_Main_Lib_File = No_File then
604 First_Main_Lib_File := Main_Lib_File;
609 Write_Str ("Checking: ");
611 Write_Str ("Binding: ");
614 Write_Name (Main_Lib_File);
618 Text := Read_Library_Info (Main_Lib_File, True);
622 pragma Warnings (Off, Id);
630 Ignore_Errors => Debug_Flag_I);
638 if No_Run_Time_Mode then
640 -- Set standard configuration parameters
642 Suppress_Standard_Library_On_Target := True;
643 Configurable_Run_Time_Mode := True;
646 -- For main ALI files, even if they are interfaces, we get their
647 -- dependencies. To be sure, we reset the Interface flag for all main
650 for Index in ALIs.First .. ALIs.Last loop
651 ALIs.Table (Index).SAL_Interface := False;
654 -- Add System.Standard_Library to list to ensure that these files are
655 -- included in the bind, even if not directly referenced from Ada code
656 -- This is suppressed if the appropriate targparm switch is set.
658 if not Suppress_Standard_Library_On_Target then
659 Name_Buffer (1 .. 12) := "s-stalib.ali";
661 Std_Lib_File := Name_Find;
662 Text := Read_Library_Info (Std_Lib_File, True);
666 pragma Warnings (Off, Id);
675 Ignore_Errors => Debug_Flag_I);
681 -- Acquire all information in ALI files that have been read in
683 for Index in ALIs.First .. ALIs.Last loop
687 -- Quit if some file needs compiling
689 if No_Object_Specified then
690 raise Unrecoverable_Error;
693 -- Build source file table from the ALI files we have read in
697 -- If there is main program to bind, set Main_Lib_File to the first
698 -- library file, and the name from which to derive the binder generate
699 -- file to the first ALI file.
701 if Bind_Main_Program then
702 Main_Lib_File := First_Main_Lib_File;
703 Set_Current_File_Name_Index (To => 1);
706 -- Check that main library file is a suitable main program
709 and then ALIs.Table (ALIs.First).Main_Program = None
710 and then not No_Main_Subprogram
712 Error_Msg_File_1 := Main_Lib_File;
713 Error_Msg ("{ does not contain a unit that can be a main program");
716 -- Perform consistency and correctness checks
718 Check_Duplicated_Subunits;
721 Check_Configuration_Consistency;
723 -- List restrictions that could be applied to this partition
725 if List_Restrictions then
726 List_Applicable_Restrictions;
729 -- Complete bind if no errors
731 if Errors_Detected = 0 then
734 if Errors_Detected = 0 then
735 -- Display elaboration order if -l was specified
737 if Elab_Order_Output then
738 if not Zero_Formatting then
740 Write_Str ("ELABORATION ORDER");
744 for J in Elab_Order.First .. Elab_Order.Last loop
745 if not Units.Table (Elab_Order.Table (J)).SAL_Interface then
746 if not Zero_Formatting then
751 (Units.Table (Elab_Order.Table (J)).Uname);
756 if not Zero_Formatting then
761 if not Check_Only then
762 Gen_Output_File (Output_File_Name.all);
765 -- Display list of sources in the closure (except predefined
766 -- sources) if -R was used.
769 if not Zero_Formatting then
771 Write_Str ("REFERENCED SOURCES");
775 for J in reverse Elab_Order.First .. Elab_Order.Last loop
777 -- Do not include the sources of the runtime
779 if not Is_Internal_File_Name
780 (Units.Table (Elab_Order.Table (J)).Sfile)
782 if not Zero_Formatting then
788 (Units.Table (Elab_Order.Table (J)).Sfile));
793 if not Zero_Formatting then
800 Total_Errors := Total_Errors + Errors_Detected;
801 Total_Warnings := Total_Warnings + Warnings_Detected;
804 when Unrecoverable_Error =>
805 Total_Errors := Total_Errors + Errors_Detected;
806 Total_Warnings := Total_Warnings + Warnings_Detected;
809 -- All done. Set proper exit status
814 if Total_Errors > 0 then
815 Exit_Program (E_Errors);
817 elsif Total_Warnings > 0 then
818 Exit_Program (E_Warnings);
821 -- Do not call Exit_Program (E_Success), so that finalization occurs