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|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- G N A T B I N D --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2006, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with ALI; use ALI;
with ALI.Util; use ALI.Util;
with Bcheck; use Bcheck;
with Binde; use Binde;
with Binderr; use Binderr;
with Bindgen; use Bindgen;
with Bindusg;
with Butil; use Butil;
with Casing; use Casing;
with Csets;
with Debug; use Debug;
with Fmap;
with Gnatvsn; use Gnatvsn;
with Namet; use Namet;
with Opt; use Opt;
with Osint; use Osint;
with Osint.B; use Osint.B;
with Output; use Output;
with Rident; use Rident;
with Snames;
with Switch; use Switch;
with Switch.B; use Switch.B;
with Targparm; use Targparm;
with Types; use Types;
with System.Case_Util; use System.Case_Util;
procedure Gnatbind is
Total_Errors : Nat := 0;
-- Counts total errors in all files
Total_Warnings : Nat := 0;
-- Total warnings in all files
Main_Lib_File : File_Name_Type;
-- Current main library file
Std_Lib_File : File_Name_Type;
-- Standard library
Text : Text_Buffer_Ptr;
Next_Arg : Positive;
Output_File_Name_Seen : Boolean := False;
Output_File_Name : String_Ptr := new String'("");
L_Switch_Seen : Boolean := False;
Mapping_File : String_Ptr := null;
function Gnatbind_Supports_Auto_Init return Boolean;
-- Indicates if automatic initialization of elaboration procedure
-- through the constructor mechanism is possible on the platform.
procedure List_Applicable_Restrictions;
-- List restrictions that apply to this partition if option taken
procedure Scan_Bind_Arg (Argv : String);
-- Scan and process binder specific arguments. Argv is a single argument.
-- All the one character arguments are still handled by Switch. This
-- routine handles -aO -aI and -I-. The lower bound of Argv must be 1.
function Is_Cross_Compiler return Boolean;
-- Returns True iff this is a cross-compiler
---------------------------------
-- Gnatbind_Supports_Auto_Init --
---------------------------------
function Gnatbind_Supports_Auto_Init return Boolean is
function gnat_binder_supports_auto_init return Integer;
pragma Import (C, gnat_binder_supports_auto_init,
"__gnat_binder_supports_auto_init");
begin
return gnat_binder_supports_auto_init /= 0;
end Gnatbind_Supports_Auto_Init;
-----------------------
-- Is_Cross_Compiler --
-----------------------
function Is_Cross_Compiler return Boolean is
Cross_Compiler : Integer;
pragma Import (C, Cross_Compiler, "__gnat_is_cross_compiler");
begin
return Cross_Compiler = 1;
end Is_Cross_Compiler;
----------------------------------
-- List_Applicable_Restrictions --
----------------------------------
procedure List_Applicable_Restrictions is
-- Define those restrictions that should be output if the gnatbind
-- -r switch is used. Not all restrictions are output for the reasons
-- given above in the list, and this array is used to test whether
-- the corresponding pragma should be listed. True means that it
-- should not be listed.
No_Restriction_List : constant array (All_Restrictions) of Boolean :=
(No_Exceptions => True,
-- Has unexpected Suppress (All_Checks) effect
No_Implicit_Conditionals => True,
-- This could modify and pessimize generated code
No_Implicit_Dynamic_Code => True,
-- This could modify and pessimize generated code
No_Implicit_Loops => True,
-- This could modify and pessimize generated code
No_Recursion => True,
-- Not checkable at compile time
No_Reentrancy => True,
-- Not checkable at compile time
Max_Entry_Queue_Length => True,
-- Not checkable at compile time
Max_Storage_At_Blocking => True,
-- Not checkable at compile time
others => False);
Additional_Restrictions_Listed : Boolean := False;
-- Set True if we have listed header for restrictions
begin
-- Loop through restrictions
for R in All_Restrictions loop
if not No_Restriction_List (R) then
-- We list a restriction if it is not violated, or if
-- it is violated but the violation count is exactly known.
if Cumulative_Restrictions.Violated (R) = False
or else (R in All_Parameter_Restrictions
and then
Cumulative_Restrictions.Unknown (R) = False)
then
if not Additional_Restrictions_Listed then
Write_Eol;
Write_Line
("The following additional restrictions may be" &
" applied to this partition:");
Additional_Restrictions_Listed := True;
end if;
Write_Str ("pragma Restrictions (");
declare
S : constant String := Restriction_Id'Image (R);
begin
Name_Len := S'Length;
Name_Buffer (1 .. Name_Len) := S;
end;
Set_Casing (Mixed_Case);
Write_Str (Name_Buffer (1 .. Name_Len));
if R in All_Parameter_Restrictions then
Write_Str (" => ");
Write_Int (Int (Cumulative_Restrictions.Count (R)));
end if;
Write_Str (");");
Write_Eol;
end if;
end if;
end loop;
end List_Applicable_Restrictions;
-------------------
-- Scan_Bind_Arg --
-------------------
procedure Scan_Bind_Arg (Argv : String) is
pragma Assert (Argv'First = 1);
begin
-- Now scan arguments that are specific to the binder and are not
-- handled by the common circuitry in Switch.
if Opt.Output_File_Name_Present
and then not Output_File_Name_Seen
then
Output_File_Name_Seen := True;
if Argv'Length = 0
or else (Argv'Length >= 1 and then Argv (1) = '-')
then
Fail ("output File_Name missing after -o");
else
Output_File_Name := new String'(Argv);
end if;
elsif Argv'Length >= 2 and then Argv (1) = '-' then
-- -I-
if Argv (2 .. Argv'Last) = "I-" then
Opt.Look_In_Primary_Dir := False;
-- -Idir
elsif Argv (2) = 'I' then
Add_Src_Search_Dir (Argv (3 .. Argv'Last));
Add_Lib_Search_Dir (Argv (3 .. Argv'Last));
-- -Ldir
elsif Argv (2) = 'L' then
if Argv'Length >= 3 then
-- Remember that the -L switch was specified, so that if this
-- is on OpenVMS, the export names are put in uppercase.
-- This is not known before the target parameters are read.
L_Switch_Seen := True;
Opt.Bind_For_Library := True;
Opt.Ada_Init_Name :=
new String'(Argv (3 .. Argv'Last) & Opt.Ada_Init_Suffix);
Opt.Ada_Final_Name :=
new String'(Argv (3 .. Argv'Last) & Opt.Ada_Final_Suffix);
Opt.Ada_Main_Name :=
new String'(Argv (3 .. Argv'Last) & Opt.Ada_Main_Name_Suffix);
-- This option (-Lxxx) implies -n
Opt.Bind_Main_Program := False;
else
Fail
("Prefix of initialization and finalization " &
"procedure names missing in -L");
end if;
-- -Sin -Slo -Shi -Sxx
elsif Argv'Length = 4
and then Argv (2) = 'S'
then
declare
C1 : Character := Argv (3);
C2 : Character := Argv (4);
begin
-- Fold to upper case
if C1 in 'a' .. 'z' then
C1 := Character'Val (Character'Pos (C1) - 32);
end if;
if C2 in 'a' .. 'z' then
C2 := Character'Val (Character'Pos (C2) - 32);
end if;
-- Test valid option and set mode accordingly
if C1 = 'E' and then C2 = 'V' then
null;
elsif C1 = 'I' and then C2 = 'N' then
null;
elsif C1 = 'L' and then C2 = 'O' then
null;
elsif C1 = 'H' and then C2 = 'I' then
null;
elsif (C1 in '0' .. '9' or else C1 in 'A' .. 'F')
and then
(C2 in '0' .. '9' or else C2 in 'A' .. 'F')
then
null;
-- Invalid -S switch, let Switch give error, set defalut of IN
else
Scan_Binder_Switches (Argv);
C1 := 'I';
C2 := 'N';
end if;
Initialize_Scalars_Mode1 := C1;
Initialize_Scalars_Mode2 := C2;
end;
-- -aIdir
elsif Argv'Length >= 3
and then Argv (2 .. 3) = "aI"
then
Add_Src_Search_Dir (Argv (4 .. Argv'Last));
-- -aOdir
elsif Argv'Length >= 3
and then Argv (2 .. 3) = "aO"
then
Add_Lib_Search_Dir (Argv (4 .. Argv'Last));
-- -nostdlib
elsif Argv (2 .. Argv'Last) = "nostdlib" then
Opt.No_Stdlib := True;
-- -nostdinc
elsif Argv (2 .. Argv'Last) = "nostdinc" then
Opt.No_Stdinc := True;
-- -static
elsif Argv (2 .. Argv'Last) = "static" then
Opt.Shared_Libgnat := False;
-- -shared
elsif Argv (2 .. Argv'Last) = "shared" then
Opt.Shared_Libgnat := True;
-- -F=mapping_file
elsif Argv'Length >= 4 and then Argv (2 .. 3) = "F=" then
if Mapping_File /= null then
Fail ("cannot specify several mapping files");
end if;
Mapping_File := new String'(Argv (4 .. Argv'Last));
-- -Mname
elsif Argv'Length >= 3 and then Argv (2) = 'M' then
if not Is_Cross_Compiler then
Write_Line
("gnatbind: -M not expected to be used on native platforms");
end if;
Opt.Bind_Alternate_Main_Name := True;
Opt.Alternate_Main_Name := new String'(Argv (3 .. Argv'Last));
-- All other options are single character and are handled by
-- Scan_Binder_Switches.
else
Scan_Binder_Switches (Argv);
end if;
-- Not a switch, so must be a file name (if non-empty)
elsif Argv'Length /= 0 then
if Argv'Length > 4
and then Argv (Argv'Last - 3 .. Argv'Last) = ".ali"
then
Add_File (Argv);
else
Add_File (Argv & ".ali");
end if;
end if;
end Scan_Bind_Arg;
-- Start of processing for Gnatbind
begin
-- Set default for Shared_Libgnat option
declare
Shared_Libgnat_Default : Character;
pragma Import
(C, Shared_Libgnat_Default, "__gnat_shared_libgnat_default");
SHARED : constant Character := 'H';
STATIC : constant Character := 'T';
begin
pragma Assert
(Shared_Libgnat_Default = SHARED
or else
Shared_Libgnat_Default = STATIC);
Shared_Libgnat := (Shared_Libgnat_Default = SHARED);
end;
-- Use low level argument routines to avoid dragging in the secondary stack
Next_Arg := 1;
Scan_Args : while Next_Arg < Arg_Count loop
declare
Next_Argv : String (1 .. Len_Arg (Next_Arg));
begin
Fill_Arg (Next_Argv'Address, Next_Arg);
Scan_Bind_Arg (Next_Argv);
end;
Next_Arg := Next_Arg + 1;
end loop Scan_Args;
if Use_Pragma_Linker_Constructor then
if Bind_Main_Program then
Fail ("switch -a must be used in conjunction with -n or -Lxxx");
elsif not Gnatbind_Supports_Auto_Init then
Fail ("automatic initialisation of elaboration " &
"not supported on this platform");
end if;
end if;
-- Test for trailing -o switch
if Opt.Output_File_Name_Present
and then not Output_File_Name_Seen
then
Fail ("output file name missing after -o");
end if;
-- Output usage if requested
if Usage_Requested then
Bindusg.Display;
end if;
-- Check that the Ada binder file specified has extension .adb and that
-- the C binder file has extension .c
if Opt.Output_File_Name_Present
and then Output_File_Name_Seen
then
Check_Extensions : declare
Length : constant Natural := Output_File_Name'Length;
Last : constant Natural := Output_File_Name'Last;
begin
if Ada_Bind_File then
if Length <= 4
or else Output_File_Name (Last - 3 .. Last) /= ".adb"
then
Fail ("output file name should have .adb extension");
end if;
else
if Length <= 2
or else Output_File_Name (Last - 1 .. Last) /= ".c"
then
Fail ("output file name should have .c extension");
end if;
end if;
end Check_Extensions;
end if;
Osint.Add_Default_Search_Dirs;
-- Carry out package initializations. These are initializations which
-- might logically be performed at elaboration time, but Namet at least
-- can't be done that way (because it is used in the Compiler), and we
-- decide to be consistent. Like elaboration, the order in which these
-- calls are made is in some cases important.
Csets.Initialize;
Namet.Initialize;
Snames.Initialize;
-- Acquire target parameters
Targparm.Get_Target_Parameters;
-- Initialize Cumulative_Restrictions with the restrictions on the target
-- scanned from the system.ads file. Then as we read ALI files, we will
-- accumulate additional restrictions specified in other files.
Cumulative_Restrictions := Targparm.Restrictions_On_Target;
-- On OpenVMS, when -L is used, all external names used in pragmas Export
-- are in upper case. The reason is that on OpenVMS, the macro-assembler
-- MACASM-32, used to build Stand-Alone Libraries, only understands
-- uppercase.
if L_Switch_Seen and then OpenVMS_On_Target then
To_Upper (Opt.Ada_Init_Name.all);
To_Upper (Opt.Ada_Final_Name.all);
To_Upper (Opt.Ada_Main_Name.all);
end if;
-- Acquire configurable run-time mode
if Configurable_Run_Time_On_Target then
Configurable_Run_Time_Mode := True;
end if;
-- Output copyright notice if in verbose mode
if Verbose_Mode then
Write_Eol;
Write_Str ("GNATBIND ");
Write_Str (Gnat_Version_String);
Write_Eol;
Write_Str ("Copyright 1995-" &
Current_Year &
", Free Software Foundation, Inc.");
Write_Eol;
end if;
-- Output usage information if no files
if not More_Lib_Files then
Bindusg.Display;
Exit_Program (E_Fatal);
end if;
-- If a mapping file was specified, initialize the file mapping
if Mapping_File /= null then
Fmap.Initialize (Mapping_File.all);
end if;
-- The block here is to catch the Unrecoverable_Error exception in the
-- case where we exceed the maximum number of permissible errors or some
-- other unrecoverable error occurs.
begin
-- Initialize binder packages
Initialize_Binderr;
Initialize_ALI;
Initialize_ALI_Source;
if Verbose_Mode then
Write_Eol;
end if;
-- Input ALI files
while More_Lib_Files loop
Main_Lib_File := Next_Main_Lib_File;
if Verbose_Mode then
if Check_Only then
Write_Str ("Checking: ");
else
Write_Str ("Binding: ");
end if;
Write_Name (Main_Lib_File);
Write_Eol;
end if;
Text := Read_Library_Info (Main_Lib_File, True);
declare
Id : ALI_Id;
pragma Warnings (Off, Id);
begin
Id := Scan_ALI
(F => Main_Lib_File,
T => Text,
Ignore_ED => False,
Err => False,
Ignore_Errors => Debug_Flag_I);
end;
Free (Text);
end loop;
-- No_Run_Time mode
if No_Run_Time_Mode then
-- Set standard configuration parameters
Suppress_Standard_Library_On_Target := True;
Configurable_Run_Time_Mode := True;
end if;
-- For main ALI files, even if they are interfaces, we get their
-- dependencies. To be sure, we reset the Interface flag for all main
-- ALI files.
for Index in ALIs.First .. ALIs.Last loop
ALIs.Table (Index).SAL_Interface := False;
end loop;
-- Add System.Standard_Library to list to ensure that these files are
-- included in the bind, even if not directly referenced from Ada code
-- This is suppressed if the appropriate targparm switch is set.
if not Suppress_Standard_Library_On_Target then
Name_Buffer (1 .. 12) := "s-stalib.ali";
Name_Len := 12;
Std_Lib_File := Name_Find;
Text := Read_Library_Info (Std_Lib_File, True);
declare
Id : ALI_Id;
pragma Warnings (Off, Id);
begin
Id :=
Scan_ALI
(F => Std_Lib_File,
T => Text,
Ignore_ED => False,
Err => False,
Ignore_Errors => Debug_Flag_I);
end;
Free (Text);
end if;
-- Acquire all information in ALI files that have been read in
for Index in ALIs.First .. ALIs.Last loop
Read_ALI (Index);
end loop;
-- Quit if some file needs compiling
if No_Object_Specified then
raise Unrecoverable_Error;
end if;
-- Build source file table from the ALI files we have read in
Set_Source_Table;
-- Check that main library file is a suitable main program
if Bind_Main_Program
and then ALIs.Table (ALIs.First).Main_Program = None
and then not No_Main_Subprogram
then
Error_Msg_Name_1 := Main_Lib_File;
Error_Msg ("% does not contain a unit that can be a main program");
end if;
-- Perform consistency and correctness checks
Check_Duplicated_Subunits;
Check_Versions;
Check_Consistency;
Check_Configuration_Consistency;
-- List restrictions that could be applied to this partition
if List_Restrictions then
List_Applicable_Restrictions;
end if;
-- Complete bind if no errors
if Errors_Detected = 0 then
Find_Elab_Order;
if Errors_Detected = 0 then
if Elab_Order_Output then
Write_Eol;
Write_Str ("ELABORATION ORDER");
Write_Eol;
for J in Elab_Order.First .. Elab_Order.Last loop
if not Units.Table (Elab_Order.Table (J)).SAL_Interface then
Write_Str (" ");
Write_Unit_Name
(Units.Table (Elab_Order.Table (J)).Uname);
Write_Eol;
end if;
end loop;
Write_Eol;
end if;
if not Check_Only then
Gen_Output_File (Output_File_Name.all);
end if;
end if;
end if;
Total_Errors := Total_Errors + Errors_Detected;
Total_Warnings := Total_Warnings + Warnings_Detected;
exception
when Unrecoverable_Error =>
Total_Errors := Total_Errors + Errors_Detected;
Total_Warnings := Total_Warnings + Warnings_Detected;
end;
-- All done. Set proper exit status
Finalize_Binderr;
Namet.Finalize;
if Total_Errors > 0 then
Exit_Program (E_Errors);
elsif Total_Warnings > 0 then
Exit_Program (E_Warnings);
else
-- Do not call Exit_Program (E_Success), so that finalization occurs
-- normally.
null;
end if;
end Gnatbind;
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