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|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- L I B . W R I T --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2017, 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 3, 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 COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- 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 Atree; use Atree;
with Casing; use Casing;
with Debug; use Debug;
with Einfo; use Einfo;
with Errout; use Errout;
with Fname; use Fname;
with Fname.UF; use Fname.UF;
with Lib.Util; use Lib.Util;
with Lib.Xref; use Lib.Xref;
with Nlists; use Nlists;
with Gnatvsn; use Gnatvsn;
with Opt; use Opt;
with Osint; use Osint;
with Osint.C; use Osint.C;
with Output; use Output;
with Par;
with Par_SCO; use Par_SCO;
with Restrict; use Restrict;
with Rident; use Rident;
with Stand; use Stand;
with Scn; use Scn;
with Sem_Eval; use Sem_Eval;
with Sinfo; use Sinfo;
with Sinput; use Sinput;
with Snames; use Snames;
with Stringt; use Stringt;
with Tbuild; use Tbuild;
with Uname; use Uname;
with System.Case_Util; use System.Case_Util;
with System.WCh_Con; use System.WCh_Con;
package body Lib.Writ is
-----------------------
-- Local Subprograms --
-----------------------
procedure Write_Unit_Name (N : Node_Id);
-- Used to write out the unit name for R (pragma Restriction) lines
-- for uses of Restriction (No_Dependence => unit-name).
----------------------------------
-- Add_Preprocessing_Dependency --
----------------------------------
procedure Add_Preprocessing_Dependency (S : Source_File_Index) is
begin
Units.Increment_Last;
Units.Table (Units.Last) :=
(Unit_File_Name => File_Name (S),
Unit_Name => No_Unit_Name,
Expected_Unit => No_Unit_Name,
Source_Index => S,
Cunit => Empty,
Cunit_Entity => Empty,
Dependency_Num => 0,
Dynamic_Elab => False,
Fatal_Error => None,
Generate_Code => False,
Has_RACW => False,
Filler => False,
Ident_String => Empty,
Is_Predefined_Renaming => False,
Is_Internal_Unit => False,
Is_Predefined_Unit => False,
Filler2 => False,
Loading => False,
Main_Priority => -1,
Main_CPU => -1,
Munit_Index => 0,
No_Elab_Code_All => False,
Primary_Stack_Count => 0,
Sec_Stack_Count => 0,
Serial_Number => 0,
Version => 0,
Error_Location => No_Location,
OA_Setting => 'O');
end Add_Preprocessing_Dependency;
------------------------------
-- Ensure_System_Dependency --
------------------------------
procedure Ensure_System_Dependency is
System_Uname : Unit_Name_Type;
-- Unit name for system spec if needed for dummy entry
System_Fname : File_Name_Type;
-- File name for system spec if needed for dummy entry
begin
-- Nothing to do if we already compiled System
for Unum in Units.First .. Last_Unit loop
if Units.Table (Unum).Source_Index = System_Source_File_Index then
return;
end if;
end loop;
-- If no entry for system.ads in the units table, then add a entry
-- to the units table for system.ads, which will be referenced when
-- the ali file is generated. We need this because every unit depends
-- on system as a result of Targparm scanning the system.ads file to
-- determine the target dependent parameters for the compilation.
Name_Len := 6;
Name_Buffer (1 .. 6) := "system";
System_Uname := Name_To_Unit_Name (Name_Enter);
System_Fname := File_Name (System_Source_File_Index);
Units.Increment_Last;
Units.Table (Units.Last) :=
(Unit_File_Name => System_Fname,
Unit_Name => System_Uname,
Expected_Unit => System_Uname,
Source_Index => System_Source_File_Index,
Cunit => Empty,
Cunit_Entity => Empty,
Dependency_Num => 0,
Dynamic_Elab => False,
Fatal_Error => None,
Generate_Code => False,
Has_RACW => False,
Filler => False,
Ident_String => Empty,
Is_Predefined_Renaming => False,
Is_Internal_Unit => True,
Is_Predefined_Unit => True,
Filler2 => False,
Loading => False,
Main_Priority => -1,
Main_CPU => -1,
Munit_Index => 0,
No_Elab_Code_All => False,
Primary_Stack_Count => 0,
Sec_Stack_Count => 0,
Serial_Number => 0,
Version => 0,
Error_Location => No_Location,
OA_Setting => 'O');
-- Parse system.ads so that the checksum is set right. Style checks are
-- not applied. The Ekind is set to ensure that this reference is always
-- present in the ali file.
declare
Save_Mindex : constant Nat := Multiple_Unit_Index;
Save_Style : constant Boolean := Style_Check;
begin
Multiple_Unit_Index := 0;
Style_Check := False;
Initialize_Scanner (Units.Last, System_Source_File_Index);
Discard_List (Par (Configuration_Pragmas => False));
Set_Ekind (Cunit_Entity (Units.Last), E_Package);
Set_Scope (Cunit_Entity (Units.Last), Standard_Standard);
Style_Check := Save_Style;
Multiple_Unit_Index := Save_Mindex;
end;
end Ensure_System_Dependency;
---------------
-- Write_ALI --
---------------
procedure Write_ALI (Object : Boolean) is
----------------
-- Local Data --
----------------
Last_Unit : constant Unit_Number_Type := Units.Last;
-- Record unit number of last unit. We capture this in case we
-- have to add a dummy entry to the unit table for package System.
With_Flags : array (Units.First .. Last_Unit) of Boolean;
-- Array of flags to show which units are with'ed
Elab_Flags : array (Units.First .. Last_Unit) of Boolean;
-- Array of flags to show which units have pragma Elaborate set
Elab_All_Flags : array (Units.First .. Last_Unit) of Boolean;
-- Array of flags to show which units have pragma Elaborate All set
Elab_Des_Flags : array (Units.First .. Last_Unit) of Boolean;
-- Array of flags to show which units have Elaborate_Desirable set
Elab_All_Des_Flags : array (Units.First .. Last_Unit) of Boolean;
-- Array of flags to show which units have Elaborate_All_Desirable set
type Yes_No is (Unknown, Yes, No);
Implicit_With : array (Units.First .. Last_Unit) of Yes_No;
-- Indicates if an implicit with has been given for the unit. Yes if
-- certainly present, no if certainly absent, unkonwn if not known.
Sdep_Table : Unit_Ref_Table (1 .. Pos (Last_Unit - Units.First + 2));
-- Sorted table of source dependencies. One extra entry in case we
-- have to add a dummy entry for System.
Num_Sdep : Nat := 0;
-- Number of active entries in Sdep_Table
flag_compare_debug : Int;
pragma Import (C, flag_compare_debug);
-- Import from toplev.c
-----------------------
-- Local Subprograms --
-----------------------
procedure Collect_Withs (Cunit : Node_Id);
-- Collect with lines for entries in the context clause of the
-- given compilation unit, Cunit.
procedure Update_Tables_From_ALI_File;
-- Given an up to date ALI file (see Up_To_Date_ALI_file_Exists
-- function), update tables from the ALI information, including
-- specifically the Compilation_Switches table.
function Up_To_Date_ALI_File_Exists return Boolean;
-- If there exists an ALI file that is up to date, then this function
-- initializes the tables in the ALI spec to contain information on
-- this file (using Scan_ALI) and returns True. If no file exists,
-- or the file is not up to date, then False is returned.
procedure Write_Unit_Information (Unit_Num : Unit_Number_Type);
-- Write out the library information for one unit for which code is
-- generated (includes unit line and with lines).
procedure Write_With_Lines;
-- Write out with lines collected by calls to Collect_Withs
-------------------
-- Collect_Withs --
-------------------
procedure Collect_Withs (Cunit : Node_Id) is
Item : Node_Id;
Unum : Unit_Number_Type;
begin
Item := First (Context_Items (Cunit));
while Present (Item) loop
-- Process with clause
-- Ada 2005 (AI-50217): limited with_clauses do not create
-- dependencies, but must be recorded as components of the
-- partition, in case there is no regular with_clause for
-- the unit anywhere else.
if Nkind (Item) = N_With_Clause then
Unum := Get_Cunit_Unit_Number (Library_Unit (Item));
With_Flags (Unum) := True;
if not Limited_Present (Item) then
if Elaborate_Present (Item) then
Elab_Flags (Unum) := True;
end if;
if Elaborate_All_Present (Item) then
Elab_All_Flags (Unum) := True;
end if;
if Elaborate_All_Desirable (Item) then
Elab_All_Des_Flags (Unum) := True;
end if;
if Elaborate_Desirable (Item) then
Elab_Des_Flags (Unum) := True;
end if;
else
Set_From_Limited_With (Cunit_Entity (Unum));
end if;
if Implicit_With (Unum) /= Yes then
if Implicit_With_From_Instantiation (Item) then
Implicit_With (Unum) := Yes;
else
Implicit_With (Unum) := No;
end if;
end if;
end if;
Next (Item);
end loop;
end Collect_Withs;
--------------------------------
-- Up_To_Date_ALI_File_Exists --
--------------------------------
function Up_To_Date_ALI_File_Exists return Boolean is
Name : File_Name_Type;
Text : Text_Buffer_Ptr;
Id : Sdep_Id;
Sind : Source_File_Index;
begin
Opt.Check_Object_Consistency := True;
Read_Library_Info (Name, Text);
-- Return if we could not find an ALI file
if Text = null then
return False;
end if;
-- Return if ALI file has bad format
Initialize_ALI;
if Scan_ALI (Name, Text, False, Err => True) = No_ALI_Id then
return False;
end if;
-- If we have an OK ALI file, check if it is up to date
-- Note that we assume that the ALI read has all the entries
-- we have in our table, plus some additional ones (that can
-- come from expansion).
Id := First_Sdep_Entry;
for J in 1 .. Num_Sdep loop
Sind := Units.Table (Sdep_Table (J)).Source_Index;
while Sdep.Table (Id).Sfile /= File_Name (Sind) loop
if Id = Sdep.Last then
return False;
else
Id := Id + 1;
end if;
end loop;
if Sdep.Table (Id).Stamp /= Time_Stamp (Sind) then
return False;
end if;
end loop;
return True;
end Up_To_Date_ALI_File_Exists;
---------------------------------
-- Update_Tables_From_ALI_File --
---------------------------------
procedure Update_Tables_From_ALI_File is
begin
-- Build Compilation_Switches table
Compilation_Switches.Init;
for J in First_Arg_Entry .. Args.Last loop
Compilation_Switches.Increment_Last;
Compilation_Switches.Table (Compilation_Switches.Last) :=
Args.Table (J);
end loop;
end Update_Tables_From_ALI_File;
----------------------------
-- Write_Unit_Information --
----------------------------
procedure Write_Unit_Information (Unit_Num : Unit_Number_Type) is
Unode : constant Node_Id := Cunit (Unit_Num);
Ukind : constant Node_Kind := Nkind (Unit (Unode));
Uent : constant Entity_Id := Cunit_Entity (Unit_Num);
Pnode : Node_Id;
begin
Write_Info_Initiate ('U');
Write_Info_Char (' ');
Write_Info_Name (Unit_Name (Unit_Num));
Write_Info_Tab (25);
Write_Info_Name (Unit_File_Name (Unit_Num));
Write_Info_Tab (49);
Write_Info_Str (Version_Get (Unit_Num));
-- Add BD parameter if Elaborate_Body pragma desirable
if Ekind (Uent) = E_Package
and then Elaborate_Body_Desirable (Uent)
then
Write_Info_Str (" BD");
end if;
-- Add BN parameter if body needed for SAL
if (Is_Subprogram (Uent)
or else Ekind (Uent) = E_Package
or else Is_Generic_Unit (Uent))
and then Body_Needed_For_SAL (Uent)
then
Write_Info_Str (" BN");
end if;
if Dynamic_Elab (Unit_Num) then
Write_Info_Str (" DE");
end if;
-- Set the Elaborate_Body indication if either an explicit pragma
-- was present, or if this is an instantiation.
if Has_Pragma_Elaborate_Body (Uent)
or else (Ukind = N_Package_Declaration
and then Is_Generic_Instance (Uent)
and then Present (Corresponding_Body (Unit (Unode))))
then
Write_Info_Str (" EB");
end if;
-- Now see if we should tell the binder that an elaboration entity
-- is present, which must be set to true during elaboration.
-- We generate the indication if the following condition is met:
-- If this is a spec ...
if (Is_Subprogram (Uent)
or else Ekind (Uent) = E_Package
or else Is_Generic_Unit (Uent))
-- and an elaboration entity was declared ...
and then Present (Elaboration_Entity (Uent))
-- and either the elaboration flag is required ...
and then (Elaboration_Entity_Required (Uent)
-- or this unit has elaboration code ...
or else not Has_No_Elaboration_Code (Unode)
-- or this unit has a separate body and this
-- body has elaboration code.
or else
(Ekind (Uent) = E_Package
and then Present (Body_Entity (Uent))
and then
not Has_No_Elaboration_Code
(Parent (Declaration_Node (Body_Entity (Uent))))))
then
Write_Info_Str (" EE");
end if;
if Has_No_Elaboration_Code (Unode) then
Write_Info_Str (" NE");
end if;
Write_Info_Str (" O");
Write_Info_Char (OA_Setting (Unit_Num));
if Ekind_In (Uent, E_Package, E_Package_Body)
and then Present (Finalizer (Uent))
then
Write_Info_Str (" PF");
end if;
if Is_Preelaborated (Uent) then
Write_Info_Str (" PR");
end if;
if Is_Pure (Uent) then
Write_Info_Str (" PU");
end if;
if Has_RACW (Unit_Num) then
Write_Info_Str (" RA");
end if;
if Is_Remote_Call_Interface (Uent) then
Write_Info_Str (" RC");
end if;
if Is_Remote_Types (Uent) then
Write_Info_Str (" RT");
end if;
if Serious_Errors_Detected /= 0 then
Write_Info_Str (" SE");
end if;
if Is_Shared_Passive (Uent) then
Write_Info_Str (" SP");
end if;
if Ukind = N_Subprogram_Declaration
or else Ukind = N_Subprogram_Body
then
Write_Info_Str (" SU");
elsif Ukind = N_Package_Declaration
or else
Ukind = N_Package_Body
then
-- If this is a wrapper package for a subprogram instantiation,
-- the user view is the subprogram. Note that in this case the
-- ali file contains both the spec and body of the instance.
if Is_Wrapper_Package (Uent) then
Write_Info_Str (" SU");
else
Write_Info_Str (" PK");
end if;
elsif Ukind = N_Generic_Package_Declaration then
Write_Info_Str (" PK");
end if;
if Ukind in N_Generic_Declaration
or else
(Present (Library_Unit (Unode))
and then
Nkind (Unit (Library_Unit (Unode))) in N_Generic_Declaration)
then
Write_Info_Str (" GE");
end if;
if not Is_Internal_Unit (Unit_Num) then
case Identifier_Casing (Source_Index (Unit_Num)) is
when All_Lower_Case => Write_Info_Str (" IL");
when All_Upper_Case => Write_Info_Str (" IU");
when others => null;
end case;
case Keyword_Casing (Source_Index (Unit_Num)) is
when Mixed_Case => Write_Info_Str (" KM");
when All_Upper_Case => Write_Info_Str (" KU");
when others => null;
end case;
end if;
if Initialize_Scalars or else Invalid_Value_Used then
Write_Info_Str (" IS");
end if;
Write_Info_EOL;
-- Generate with lines, first those that are directly with'ed
for J in With_Flags'Range loop
With_Flags (J) := False;
Elab_Flags (J) := False;
Elab_All_Flags (J) := False;
Elab_Des_Flags (J) := False;
Elab_All_Des_Flags (J) := False;
Implicit_With (J) := Unknown;
end loop;
Collect_Withs (Unode);
-- For a body, we must also check for any subunits which belong to
-- it and which have context clauses of their own, since these
-- with'ed units are part of its own elaboration dependencies.
if Nkind (Unit (Unode)) in N_Unit_Body then
for S in Units.First .. Last_Unit loop
-- We are only interested in subunits. For preproc. data and
-- def. files, Cunit is Empty, so we need to test that first.
if Cunit (S) /= Empty
and then Nkind (Unit (Cunit (S))) = N_Subunit
then
Pnode := Library_Unit (Cunit (S));
-- In gnatc mode, the errors in the subunits will not have
-- been recorded, but the analysis of the subunit may have
-- failed. There is no information to add to ALI file in
-- this case.
if No (Pnode) then
exit;
end if;
-- Find ultimate parent of the subunit
while Nkind (Unit (Pnode)) = N_Subunit loop
Pnode := Library_Unit (Pnode);
end loop;
-- See if it belongs to current unit, and if so, include
-- its with_clauses.
if Pnode = Unode then
Collect_Withs (Cunit (S));
end if;
end if;
end loop;
end if;
Write_With_Lines;
-- Generate task stack lines
if Primary_Stack_Count (Unit_Num) > 0
or else Sec_Stack_Count (Unit_Num) > 0
then
Write_Info_Initiate ('T');
Write_Info_Char (' ');
Write_Info_Int (Primary_Stack_Count (Unit_Num));
Write_Info_Char (' ');
Write_Info_Int (Sec_Stack_Count (Unit_Num));
Write_Info_EOL;
end if;
-- Generate the linker option lines
for J in 1 .. Linker_Option_Lines.Last loop
-- Pragma Linker_Options is not allowed in predefined generic
-- units. This is because they won't be read, due to the fact that
-- with lines for generic units lack the file name and lib name
-- parameters (see Lib_Writ spec for an explanation).
if Is_Generic_Unit (Cunit_Entity (Main_Unit))
and then Is_Predefined_Unit (Current_Sem_Unit)
and then Linker_Option_Lines.Table (J).Unit = Unit_Num
then
Set_Standard_Error;
Write_Line
("linker options not allowed in predefined generic unit");
raise Unrecoverable_Error;
end if;
-- Output one linker option line
declare
S : Linker_Option_Entry renames Linker_Option_Lines.Table (J);
begin
if S.Unit = Unit_Num then
Write_Info_Initiate ('L');
Write_Info_Char (' ');
Write_Info_Slit (S.Option);
Write_Info_EOL;
end if;
end;
end loop;
-- Output notes
for J in 1 .. Notes.Last loop
declare
N : constant Node_Id := Notes.Table (J);
L : constant Source_Ptr := Sloc (N);
U : constant Unit_Number_Type :=
Unit (Get_Source_File_Index (L));
C : Character;
Note_Unit : Unit_Number_Type;
-- The unit in whose U section this note must be emitted:
-- notes for subunits are emitted along with the main unit;
-- all other notes are emitted as part of the enclosing
-- compilation unit.
begin
if U /= No_Unit and then Nkind (Unit (Cunit (U))) = N_Subunit
then
Note_Unit := Main_Unit;
else
Note_Unit := U;
end if;
if Note_Unit = Unit_Num then
Write_Info_Initiate ('N');
Write_Info_Char (' ');
case Pragma_Name (N) is
when Name_Annotate =>
C := 'A';
when Name_Comment =>
C := 'C';
when Name_Ident =>
C := 'I';
when Name_Title =>
C := 'T';
when Name_Subtitle =>
C := 'S';
when others =>
raise Program_Error;
end case;
Write_Info_Char (C);
Write_Info_Int (Int (Get_Logical_Line_Number (L)));
Write_Info_Char (':');
Write_Info_Int (Int (Get_Column_Number (L)));
-- Indicate source file of annotation if different from
-- compilation unit source file (case of annotation coming
-- from a separate).
if Get_Source_File_Index (L) /= Source_Index (Unit_Num) then
Write_Info_Char (':');
Write_Info_Name (File_Name (Get_Source_File_Index (L)));
end if;
declare
A : Node_Id;
begin
A := First (Pragma_Argument_Associations (N));
while Present (A) loop
Write_Info_Char (' ');
if Chars (A) /= No_Name then
Write_Info_Name (Chars (A));
Write_Info_Char (':');
end if;
declare
Expr : constant Node_Id := Expression (A);
begin
if Nkind (Expr) = N_Identifier then
Write_Info_Name (Chars (Expr));
elsif Nkind (Expr) = N_Integer_Literal
and then Is_OK_Static_Expression (Expr)
then
Write_Info_Uint (Intval (Expr));
elsif Nkind (Expr) = N_String_Literal
and then Is_OK_Static_Expression (Expr)
then
Write_Info_Slit (Strval (Expr));
else
Write_Info_Str ("<expr>");
end if;
end;
Next (A);
end loop;
end;
Write_Info_EOL;
end if;
end;
end loop;
end Write_Unit_Information;
----------------------
-- Write_With_Lines --
----------------------
procedure Write_With_Lines is
Pname : constant Unit_Name_Type :=
Get_Parent_Spec_Name (Unit_Name (Main_Unit));
Body_Fname : File_Name_Type;
Body_Index : Nat;
Cunit : Node_Id;
Fname : File_Name_Type;
Num_Withs : Int := 0;
Unum : Unit_Number_Type;
Uname : Unit_Name_Type;
With_Table : Unit_Ref_Table (1 .. Pos (Last_Unit - Units.First + 1));
procedure Write_With_File_Names
(Nam : in out File_Name_Type;
Idx : Nat);
-- Write source file name Nam and ALI file name for unit index Idx.
-- Possibly change Nam to lowercase (generating a new file name).
--------------------------
-- Write_With_File_Name --
--------------------------
procedure Write_With_File_Names
(Nam : in out File_Name_Type;
Idx : Nat)
is
begin
if not File_Names_Case_Sensitive then
Get_Name_String (Nam);
To_Lower (Name_Buffer (1 .. Name_Len));
Nam := Name_Find;
end if;
Write_Info_Name (Nam);
Write_Info_Tab (49);
Write_Info_Name (Lib_File_Name (Nam, Idx));
end Write_With_File_Names;
-- Start of processing for Write_With_Lines
begin
-- Loop to build the with table. A with on the main unit itself
-- is ignored (AARM 10.2(14a)). Such a with-clause can occur if
-- the main unit is a subprogram with no spec, and a subunit of
-- it unnecessarily withs the parent.
for J in Units.First + 1 .. Last_Unit loop
-- Add element to with table if it is with'ed or if it is the
-- parent spec of the main unit (case of main unit is a child
-- unit). The latter with is not needed for semantic purposes,
-- but is required by the binder for elaboration purposes. For
-- preprocessing data and definition files, there is no Unit_Name,
-- check for that first.
if Unit_Name (J) /= No_Unit_Name
and then (With_Flags (J) or else Unit_Name (J) = Pname)
then
Num_Withs := Num_Withs + 1;
With_Table (Num_Withs) := J;
end if;
end loop;
-- Sort and output the table
Sort (With_Table (1 .. Num_Withs));
for J in 1 .. Num_Withs loop
Unum := With_Table (J);
-- Do not generate a with line for an ignored Ghost unit because
-- the unit does not have an ALI file.
if Is_Ignored_Ghost_Entity (Cunit_Entity (Unum)) then
goto Next_With_Line;
end if;
Cunit := Units.Table (Unum).Cunit;
Uname := Units.Table (Unum).Unit_Name;
Fname := Units.Table (Unum).Unit_File_Name;
if Implicit_With (Unum) = Yes then
Write_Info_Initiate ('Z');
elsif Ekind (Cunit_Entity (Unum)) = E_Package
and then From_Limited_With (Cunit_Entity (Unum))
then
Write_Info_Initiate ('Y');
else
Write_Info_Initiate ('W');
end if;
Write_Info_Char (' ');
Write_Info_Name (Uname);
-- Now we need to figure out the names of the files that contain
-- the with'ed unit. These will usually be the files for the body,
-- except in the case of a package that has no body. Note that we
-- have a specific exemption here for predefined library generics
-- (see comments for Generic_May_Lack_ALI). We do not generate
-- dependency upon the ALI file for such units. Older compilers
-- used to not support generating code (and ALI) for generics, and
-- we want to avoid having different processing (namely, different
-- lists of files to be compiled) for different stages of the
-- bootstrap.
if not ((Nkind (Unit (Cunit)) in N_Generic_Declaration
or else
Nkind (Unit (Cunit)) in N_Generic_Renaming_Declaration)
and then Generic_May_Lack_ALI (Unum))
-- In SPARK mode, always generate the dependencies on ALI
-- files, which are required to compute frame conditions
-- of subprograms.
or else GNATprove_Mode
then
Write_Info_Tab (25);
if Is_Spec_Name (Uname) then
Body_Fname :=
Get_File_Name
(Get_Body_Name (Uname),
Subunit => False, May_Fail => True);
Body_Index :=
Get_Unit_Index
(Get_Body_Name (Uname));
if Body_Fname = No_File then
Body_Fname := Get_File_Name (Uname, Subunit => False);
Body_Index := Get_Unit_Index (Uname);
end if;
else
Body_Fname := Get_File_Name (Uname, Subunit => False);
Body_Index := Get_Unit_Index (Uname);
end if;
-- A package is considered to have a body if it requires
-- a body or if a body is present in Ada 83 mode.
if Body_Required (Cunit)
or else (Ada_Version = Ada_83
and then Full_Source_Name (Body_Fname) /= No_File)
then
Write_With_File_Names (Body_Fname, Body_Index);
else
Write_With_File_Names (Fname, Munit_Index (Unum));
end if;
if Ekind (Cunit_Entity (Unum)) = E_Package
and then From_Limited_With (Cunit_Entity (Unum))
then
null;
else
if Elab_Flags (Unum) then
Write_Info_Str (" E");
end if;
if Elab_All_Flags (Unum) then
Write_Info_Str (" EA");
end if;
if Elab_Des_Flags (Unum) then
Write_Info_Str (" ED");
end if;
if Elab_All_Des_Flags (Unum) then
Write_Info_Str (" AD");
end if;
end if;
end if;
Write_Info_EOL;
<<Next_With_Line>>
null;
end loop;
-- Finally generate the special lines for cases of Restriction_Set
-- with No_Dependence and no restriction present.
declare
Unam : Unit_Name_Type;
begin
for J in Restriction_Set_Dependences.First ..
Restriction_Set_Dependences.Last
loop
Unam := Restriction_Set_Dependences.Table (J);
-- Don't need an entry if already in the unit table
for U in 0 .. Last_Unit loop
if Unit_Name (U) = Unam then
goto Next_Restriction_Set;
end if;
end loop;
-- Otherwise generate the entry
Write_Info_Initiate ('W');
Write_Info_Char (' ');
Write_Info_Name (Unam);
Write_Info_EOL;
<<Next_Restriction_Set>>
null;
end loop;
end;
end Write_With_Lines;
-- Start of processing for Write_ALI
begin
-- We never write an ALI file if the original operating mode was
-- syntax-only (-gnats switch used in compiler invocation line)
if Original_Operating_Mode = Check_Syntax
or flag_compare_debug /= 0
then
return;
end if;
-- Generation of ALI files may be disabled, e.g. for formal verification
-- back-end.
if Disable_ALI_File then
return;
end if;
-- Build sorted source dependency table. We do this right away, because
-- it is referenced by Up_To_Date_ALI_File_Exists.
for Unum in Units.First .. Last_Unit loop
if Cunit_Entity (Unum) = Empty
or else not From_Limited_With (Cunit_Entity (Unum))
then
-- Units that are not analyzed need not appear in the dependency
-- list. These units are either units appearing in limited_with
-- clauses of other units, or units loaded for inlining that end
-- up not inlined by a later decision of the inlining code, to
-- prevent circularities. We want to exclude these files from the
-- list of dependencies, so that the dependency number of other
-- is correctly set, as that number is used by cross-reference
-- tools to relate entity information to the unit in which they
-- are declared.
if Present (Cunit_Entity (Unum))
and then Ekind (Cunit_Entity (Unum)) = E_Void
and then Nkind (Unit (Cunit (Unum))) /= N_Subunit
and then Serious_Errors_Detected = 0
then
null;
else
Num_Sdep := Num_Sdep + 1;
Sdep_Table (Num_Sdep) := Unum;
end if;
end if;
end loop;
-- Sort the table so that the D lines are in order
Lib.Sort (Sdep_Table (1 .. Num_Sdep));
-- If we are not generating code, and there is an up to date ALI file
-- file accessible, read it, and acquire the compilation arguments from
-- this file. In GNATprove mode, always generate the ALI file, which
-- contains a special section for formal verification.
if Operating_Mode /= Generate_Code and then not GNATprove_Mode then
if Up_To_Date_ALI_File_Exists then
Update_Tables_From_ALI_File;
return;
end if;
end if;
-- Otherwise acquire compilation arguments and prepare to write out a
-- new ali file.
Create_Output_Library_Info;
-- Output version line
Write_Info_Initiate ('V');
Write_Info_Str (" """);
Write_Info_Str (Verbose_Library_Version);
Write_Info_Char ('"');
Write_Info_EOL;
-- Output main program line if this is acceptable main program
Output_Main_Program_Line : declare
U : Node_Id := Unit (Units.Table (Main_Unit).Cunit);
S : Node_Id;
procedure M_Parameters;
-- Output parameters for main program line
------------------
-- M_Parameters --
------------------
procedure M_Parameters is
begin
if Main_Priority (Main_Unit) /= Default_Main_Priority then
Write_Info_Char (' ');
Write_Info_Nat (Main_Priority (Main_Unit));
end if;
if Opt.Time_Slice_Set then
Write_Info_Str (" T=");
Write_Info_Nat (Opt.Time_Slice_Value);
end if;
if Main_CPU (Main_Unit) /= Default_Main_CPU then
Write_Info_Str (" C=");
Write_Info_Nat (Main_CPU (Main_Unit));
end if;
Write_Info_Str (" W=");
Write_Info_Char
(WC_Encoding_Letters (Wide_Character_Encoding_Method));
Write_Info_EOL;
end M_Parameters;
-- Start of processing for Output_Main_Program_Line
begin
if Nkind (U) = N_Subprogram_Body
or else
(Nkind (U) = N_Package_Body
and then
Nkind (Original_Node (U)) in N_Subprogram_Instantiation)
then
-- If the unit is a subprogram instance, the entity for the
-- subprogram is the alias of the visible entity, which is the
-- related instance of the wrapper package. We retrieve the
-- subprogram declaration of the desired entity.
if Nkind (U) = N_Package_Body then
U := Parent (Parent (
Alias (Related_Instance (Defining_Unit_Name
(Specification (Unit (Library_Unit (Parent (U)))))))));
end if;
S := Specification (U);
-- A generic subprogram is never a main program
if Nkind (U) = N_Subprogram_Body
and then Present (Corresponding_Spec (U))
and then
Ekind_In (Corresponding_Spec (U), E_Generic_Procedure,
E_Generic_Function)
then
null;
elsif No (Parameter_Specifications (S)) then
if Nkind (S) = N_Procedure_Specification then
Write_Info_Initiate ('M');
Write_Info_Str (" P");
M_Parameters;
else
declare
Nam : Node_Id := Defining_Unit_Name (S);
begin
-- If it is a child unit, get its simple name
if Nkind (Nam) = N_Defining_Program_Unit_Name then
Nam := Defining_Identifier (Nam);
end if;
if Is_Integer_Type (Etype (Nam)) then
Write_Info_Initiate ('M');
Write_Info_Str (" F");
M_Parameters;
end if;
end;
end if;
end if;
end if;
end Output_Main_Program_Line;
-- Write command argument ('A') lines
for A in 1 .. Compilation_Switches.Last loop
Write_Info_Initiate ('A');
Write_Info_Char (' ');
Write_Info_Str (Compilation_Switches.Table (A).all);
Write_Info_Terminate;
end loop;
-- Output parameters ('P') line
Write_Info_Initiate ('P');
if Compilation_Errors then
Write_Info_Str (" CE");
end if;
if Opt.Detect_Blocking then
Write_Info_Str (" DB");
end if;
if Tasking_Used and then not Is_Predefined_Unit (Main_Unit) then
if Locking_Policy /= ' ' then
Write_Info_Str (" L");
Write_Info_Char (Locking_Policy);
end if;
if Queuing_Policy /= ' ' then
Write_Info_Str (" Q");
Write_Info_Char (Queuing_Policy);
end if;
if Task_Dispatching_Policy /= ' ' then
Write_Info_Str (" T");
Write_Info_Char (Task_Dispatching_Policy);
Write_Info_Char (' ');
end if;
end if;
if GNATprove_Mode then
Write_Info_Str (" GP");
end if;
if Partition_Elaboration_Policy /= ' ' then
Write_Info_Str (" E");
Write_Info_Char (Partition_Elaboration_Policy);
end if;
if No_Component_Reordering_Config then
Write_Info_Str (" NC");
end if;
if not Object then
Write_Info_Str (" NO");
end if;
if No_Run_Time_Mode then
Write_Info_Str (" NR");
end if;
if Normalize_Scalars then
Write_Info_Str (" NS");
end if;
if Default_SSO_Config /= ' ' then
Write_Info_Str (" O");
Write_Info_Char (Default_SSO_Config);
end if;
if Sec_Stack_Used then
Write_Info_Str (" SS");
end if;
if Unreserve_All_Interrupts then
Write_Info_Str (" UA");
end if;
if Front_End_Exceptions then
Write_Info_Str (" FX");
end if;
if ZCX_Exceptions then
Write_Info_Str (" ZX");
end if;
Write_Info_EOL;
-- Before outputting the restrictions line, update the setting of
-- the No_Elaboration_Code flag. Violations of this restriction
-- cannot be detected until after the backend has been called since
-- it is the backend that sets this flag. We have to check all units
-- for which we have generated code
for Unit in Units.First .. Last_Unit loop
if Units.Table (Unit).Generate_Code or else Unit = Main_Unit then
if not Has_No_Elaboration_Code (Cunit (Unit)) then
Main_Restrictions.Violated (No_Elaboration_Code) := True;
end if;
end if;
end loop;
-- Positional case (only if debug flag -gnatd.R is set)
if Debug_Flag_Dot_RR then
-- Output first restrictions line
Write_Info_Initiate ('R');
Write_Info_Char (' ');
-- First the information for the boolean restrictions
for R in All_Boolean_Restrictions loop
if Main_Restrictions.Set (R)
and then not Restriction_Warnings (R)
then
Write_Info_Char ('r');
elsif Main_Restrictions.Violated (R) then
Write_Info_Char ('v');
else
Write_Info_Char ('n');
end if;
end loop;
-- And now the information for the parameter restrictions
for RP in All_Parameter_Restrictions loop
if Main_Restrictions.Set (RP)
and then not Restriction_Warnings (RP)
then
Write_Info_Char ('r');
Write_Info_Nat (Nat (Main_Restrictions.Value (RP)));
else
Write_Info_Char ('n');
end if;
if not Main_Restrictions.Violated (RP)
or else RP not in Checked_Parameter_Restrictions
then
Write_Info_Char ('n');
else
Write_Info_Char ('v');
Write_Info_Nat (Nat (Main_Restrictions.Count (RP)));
if Main_Restrictions.Unknown (RP) then
Write_Info_Char ('+');
end if;
end if;
end loop;
Write_Info_EOL;
-- Named case (if debug flag -gnatd.R is not set)
else
declare
C : Character;
begin
-- Write RN header line with preceding blank line
Write_Info_EOL;
Write_Info_Initiate ('R');
Write_Info_Char ('N');
Write_Info_EOL;
-- First the lines for the boolean restrictions
for R in All_Boolean_Restrictions loop
if Main_Restrictions.Set (R)
and then not Restriction_Warnings (R)
then
C := 'R';
elsif Main_Restrictions.Violated (R) then
C := 'V';
else
goto Continue;
end if;
Write_Info_Initiate ('R');
Write_Info_Char (C);
Write_Info_Char (' ');
Write_Info_Str (All_Boolean_Restrictions'Image (R));
Write_Info_EOL;
<<Continue>>
null;
end loop;
end;
-- And now the lines for the parameter restrictions
for RP in All_Parameter_Restrictions loop
if Main_Restrictions.Set (RP)
and then not Restriction_Warnings (RP)
then
Write_Info_Initiate ('R');
Write_Info_Str ("R ");
Write_Info_Str (All_Parameter_Restrictions'Image (RP));
Write_Info_Char ('=');
Write_Info_Nat (Nat (Main_Restrictions.Value (RP)));
Write_Info_EOL;
end if;
if not Main_Restrictions.Violated (RP)
or else RP not in Checked_Parameter_Restrictions
then
null;
else
Write_Info_Initiate ('R');
Write_Info_Str ("V ");
Write_Info_Str (All_Parameter_Restrictions'Image (RP));
Write_Info_Char ('=');
Write_Info_Nat (Nat (Main_Restrictions.Count (RP)));
if Main_Restrictions.Unknown (RP) then
Write_Info_Char ('+');
end if;
Write_Info_EOL;
end if;
end loop;
end if;
-- Output R lines for No_Dependence entries
for J in No_Dependences.First .. No_Dependences.Last loop
if In_Extended_Main_Source_Unit (No_Dependences.Table (J).Unit)
and then not No_Dependences.Table (J).Warn
then
Write_Info_Initiate ('R');
Write_Info_Char (' ');
Write_Unit_Name (No_Dependences.Table (J).Unit);
Write_Info_EOL;
end if;
end loop;
-- Output interrupt state lines
for J in Interrupt_States.First .. Interrupt_States.Last loop
Write_Info_Initiate ('I');
Write_Info_Char (' ');
Write_Info_Nat (Interrupt_States.Table (J).Interrupt_Number);
Write_Info_Char (' ');
Write_Info_Char (Interrupt_States.Table (J).Interrupt_State);
Write_Info_Char (' ');
Write_Info_Nat
(Nat (Get_Logical_Line_Number
(Interrupt_States.Table (J).Pragma_Loc)));
Write_Info_EOL;
end loop;
-- Output priority specific dispatching lines
for J in Specific_Dispatching.First .. Specific_Dispatching.Last loop
Write_Info_Initiate ('S');
Write_Info_Char (' ');
Write_Info_Char (Specific_Dispatching.Table (J).Dispatching_Policy);
Write_Info_Char (' ');
Write_Info_Nat (Specific_Dispatching.Table (J).First_Priority);
Write_Info_Char (' ');
Write_Info_Nat (Specific_Dispatching.Table (J).Last_Priority);
Write_Info_Char (' ');
Write_Info_Nat
(Nat (Get_Logical_Line_Number
(Specific_Dispatching.Table (J).Pragma_Loc)));
Write_Info_EOL;
end loop;
-- Loop through file table to output information for all units for which
-- we have generated code, as marked by the Generate_Code flag.
for Unit in Units.First .. Last_Unit loop
if Units.Table (Unit).Generate_Code
or else Unit = Main_Unit
then
Write_Info_EOL; -- blank line
Write_Unit_Information (Unit);
end if;
end loop;
Write_Info_EOL; -- blank line
-- Output external version reference lines
for J in 1 .. Version_Ref.Last loop
Write_Info_Initiate ('E');
Write_Info_Char (' ');
for K in 1 .. String_Length (Version_Ref.Table (J)) loop
Write_Info_Char_Code (Get_String_Char (Version_Ref.Table (J), K));
end loop;
Write_Info_EOL;
end loop;
-- Prepare to output the source dependency lines
declare
Unum : Unit_Number_Type;
-- Number of unit being output
Sind : Source_File_Index;
-- Index of corresponding source file
Fname : File_Name_Type;
begin
for J in 1 .. Num_Sdep loop
Unum := Sdep_Table (J);
Units.Table (Unum).Dependency_Num := J;
Sind := Units.Table (Unum).Source_Index;
Write_Info_Initiate ('D');
Write_Info_Char (' ');
-- Normal case of a unit entry with a source index
if Sind > No_Source_File then
Fname := File_Name (Sind);
-- Ensure that on platforms where the file names are not case
-- sensitive, the recorded file name is in lower case.
if not File_Names_Case_Sensitive then
Get_Name_String (Fname);
To_Lower (Name_Buffer (1 .. Name_Len));
Fname := Name_Find;
end if;
Write_Info_Name_May_Be_Quoted (Fname);
Write_Info_Tab (25);
Write_Info_Str (String (Time_Stamp (Sind)));
Write_Info_Char (' ');
Write_Info_Str (Get_Hex_String (Source_Checksum (Sind)));
-- If the dependency comes from a limited_with clause, record
-- limited_checksum. This is disabled until full checksum
-- changes are checked.
-- if Present (Cunit_Entity (Unum))
-- and then From_Limited_With (Cunit_Entity (Unum))
-- then
-- Write_Info_Char (' ');
-- Write_Info_Char ('Y');
-- Write_Info_Str (Get_Hex_String (Limited_Chk_Sum (Sind)));
-- end if;
-- If subunit, add unit name, omitting the %b at the end
if Present (Cunit (Unum)) then
Get_Decoded_Name_String (Unit_Name (Unum));
Write_Info_Char (' ');
if Nkind (Unit (Cunit (Unum))) = N_Subunit then
Write_Info_Str (Name_Buffer (1 .. Name_Len - 2));
else
Write_Info_Str (Name_Buffer (1 .. Name_Len));
end if;
end if;
-- If Source_Reference pragma used, output information
if Num_SRef_Pragmas (Sind) > 0 then
Write_Info_Char (' ');
if Num_SRef_Pragmas (Sind) = 1 then
Write_Info_Nat (Int (First_Mapped_Line (Sind)));
else
Write_Info_Nat (0);
end if;
Write_Info_Char (':');
Write_Info_Name (Reference_Name (Sind));
end if;
-- Case where there is no source index (happens for missing
-- files). In this case we write a dummy time stamp.
else
Write_Info_Name (Unit_File_Name (Unum));
Write_Info_Tab (25);
Write_Info_Str (String (Dummy_Time_Stamp));
Write_Info_Char (' ');
Write_Info_Str (Get_Hex_String (0));
end if;
Write_Info_EOL;
end loop;
end;
-- Output cross-references
if Opt.Xref_Active then
Output_References;
end if;
-- Output SCO information if present
if Generate_SCO then
SCO_Record_Filtered;
SCO_Output;
end if;
-- Output final blank line and we are done. This final blank line is
-- probably junk, but we don't feel like making an incompatible change.
Write_Info_Terminate;
Close_Output_Library_Info;
end Write_ALI;
---------------------
-- Write_Unit_Name --
---------------------
procedure Write_Unit_Name (N : Node_Id) is
begin
if Nkind (N) = N_Identifier then
Write_Info_Name (Chars (N));
else
pragma Assert (Nkind (N) = N_Selected_Component);
Write_Unit_Name (Prefix (N));
Write_Info_Char ('.');
Write_Unit_Name (Selector_Name (N));
end if;
end Write_Unit_Name;
end Lib.Writ;
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