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|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- A L I --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2004 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, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Butil; use Butil;
with Debug; use Debug;
with Fname; use Fname;
with Namet; use Namet;
with Opt; use Opt;
with Osint; use Osint;
with Output; use Output;
package body ALI is
use ASCII;
-- Make control characters visible
-- The following variable records which characters currently are
-- used as line type markers in the ALI file. This is used in
-- Scan_ALI to detect (or skip) invalid lines.
Known_ALI_Lines : constant array (Character range 'A' .. 'Z') of Boolean :=
('V' => True, -- version
'M' => True, -- main program
'A' => True, -- argument
'P' => True, -- program
'R' => True, -- restriction
'I' => True, -- interrupt
'U' => True, -- unit
'W' => True, -- with
'L' => True, -- linker option
'E' => True, -- external
'D' => True, -- dependency
'X' => True, -- xref
others => False);
--------------------
-- Initialize_ALI --
--------------------
procedure Initialize_ALI is
begin
-- When (re)initializing ALI data structures the ALI user expects to
-- get a fresh set of data structures. Thus we first need to erase the
-- marks put in the name table by the previous set of ALI routine calls.
-- These two loops are empty and harmless the first time in.
for J in ALIs.First .. ALIs.Last loop
Set_Name_Table_Info (ALIs.Table (J).Afile, 0);
end loop;
for J in Units.First .. Units.Last loop
Set_Name_Table_Info (Units.Table (J).Uname, 0);
end loop;
-- Free argument table strings
for J in Args.First .. Args.Last loop
Free (Args.Table (J));
end loop;
-- Initialize all tables
ALIs.Init;
Units.Init;
Withs.Init;
Sdep.Init;
Linker_Options.Init;
Xref_Section.Init;
Xref_Entity.Init;
Xref.Init;
Version_Ref.Reset;
-- Add dummy zero'th item in Linker_Options for the sort function
Linker_Options.Increment_Last;
-- Initialize global variables recording cumulative options in all
-- ALI files that are read for a given processing run in gnatbind.
Dynamic_Elaboration_Checks_Specified := False;
Float_Format_Specified := ' ';
Locking_Policy_Specified := ' ';
No_Normalize_Scalars_Specified := False;
No_Object_Specified := False;
Normalize_Scalars_Specified := False;
Queuing_Policy_Specified := ' ';
Static_Elaboration_Model_Used := False;
Task_Dispatching_Policy_Specified := ' ';
Unreserve_All_Interrupts_Specified := False;
Zero_Cost_Exceptions_Specified := False;
end Initialize_ALI;
--------------
-- Scan_ALI --
--------------
function Scan_ALI
(F : File_Name_Type;
T : Text_Buffer_Ptr;
Ignore_ED : Boolean;
Err : Boolean;
Read_Xref : Boolean := False;
Read_Lines : String := "";
Ignore_Lines : String := "X";
Ignore_Errors : Boolean := False) return ALI_Id
is
P : Text_Ptr := T'First;
Line : Logical_Line_Number := 1;
Id : ALI_Id;
C : Character;
NS_Found : Boolean;
First_Arg : Arg_Id;
Ignore : array (Character range 'A' .. 'Z') of Boolean;
-- Ignore (X) is set to True if lines starting with X are to
-- be ignored by Scan_ALI and skipped, and False if the lines
-- are to be read and processed.
Restrictions_Initial : Rident.Restrictions_Info;
pragma Warnings (Off, Restrictions_Initial);
-- This variable, which should really be a constant (but that's not
-- allowed by the language) is used only for initialization, and the
-- reason we are declaring it is to get the default initialization
-- set for the object.
Bad_ALI_Format : exception;
-- Exception raised by Fatal_Error if Err is True
function At_Eol return Boolean;
-- Test if at end of line
function At_End_Of_Field return Boolean;
-- Test if at end of line, or if at blank or horizontal tab
procedure Check_At_End_Of_Field;
-- Check if we are at end of field, fatal error if not
procedure Checkc (C : Character);
-- Check next character is C. If so bump past it, if not fatal error
procedure Check_Unknown_Line;
-- If Ignore_Errors mode, then checks C to make sure that it is not
-- an unknown ALI line type characters, and if so, skips lines
-- until the first character of the line is one of these characters,
-- at which point it does a Getc to put that character in C. The
-- call has no effect if C is already an appropriate character.
-- If not in Ignore_Errors mode, a fatal error is signalled if the
-- line is unknown. Note that if C is an EOL on entry, the line is
-- skipped (it is assumed that blank lines are never significant).
-- If C is EOF on entry, the call has no effect (it is assumed that
-- the caller will properly handle this case).
procedure Fatal_Error;
-- Generate fatal error message for badly formatted ALI file if
-- Err is false, or raise Bad_ALI_Format if Err is True.
procedure Fatal_Error_Ignore;
pragma Inline (Fatal_Error_Ignore);
-- In Ignore_Errors mode, has no effect, otherwise same as Fatal_Error
function Getc return Character;
-- Get next character, bumping P past the character obtained
function Get_Name
(Lower : Boolean := False;
Ignore_Spaces : Boolean := False) return Name_Id;
-- Skip blanks, then scan out a name (name is left in Name_Buffer with
-- length in Name_Len, as well as being returned in Name_Id form).
-- If Lower is set to True then the Name_Buffer will be converted to
-- all lower case, for systems where file names are not case sensitive.
-- This ensures that gnatbind works correctly regardless of the case
-- of the file name on all systems. The name is terminated by a either
-- white space (when Ignore_Spaces is False) or a typeref bracket or
-- an equal sign except for the special case of an operator name
-- starting with a double quite which is terminated by another double
-- quote.
function Get_Nat return Nat;
-- Skip blanks, then scan out an unsigned integer value in Nat range.
function Get_Stamp return Time_Stamp_Type;
-- Skip blanks, then scan out a time stamp
function Nextc return Character;
-- Return current character without modifying pointer P
procedure Skip_Eol;
-- Skip past spaces, then skip past end of line (fatal error if not
-- at end of line). Also skips past any following blank lines.
procedure Skip_Line;
-- Skip rest of current line and any following blank lines.
procedure Skip_Space;
-- Skip past white space (blanks or horizontal tab)
procedure Skipc;
-- Skip past next character, does not affect value in C. This call
-- is like calling Getc and ignoring the returned result.
---------------------
-- At_End_Of_Field --
---------------------
function At_End_Of_Field return Boolean is
begin
return Nextc <= ' ';
end At_End_Of_Field;
------------
-- At_Eol --
------------
function At_Eol return Boolean is
begin
return Nextc = EOF or else Nextc = CR or else Nextc = LF;
end At_Eol;
---------------------------
-- Check_At_End_Of_Field --
---------------------------
procedure Check_At_End_Of_Field is
begin
if not At_End_Of_Field then
if Ignore_Errors then
while Nextc > ' ' loop
P := P + 1;
end loop;
else
Fatal_Error;
end if;
end if;
end Check_At_End_Of_Field;
------------
-- Checkc --
------------
procedure Checkc (C : Character) is
begin
if Nextc = C then
P := P + 1;
elsif Ignore_Errors then
P := P + 1;
else
Fatal_Error;
end if;
end Checkc;
------------------------
-- Check_Unknown_Line --
------------------------
procedure Check_Unknown_Line is
begin
while C not in 'A' .. 'Z'
or else not Known_ALI_Lines (C)
loop
if C = CR or else C = LF then
Skip_Line;
elsif C = EOF then
return;
elsif Ignore_Errors then
Skip_Line;
C := Getc;
else
Fatal_Error;
end if;
end loop;
end Check_Unknown_Line;
-----------------
-- Fatal_Error --
-----------------
procedure Fatal_Error is
Ptr1 : Text_Ptr;
Ptr2 : Text_Ptr;
Col : Int;
procedure Wchar (C : Character);
-- Write a single character, replacing horizontal tab by spaces
procedure Wchar (C : Character) is
begin
if C = HT then
loop
Wchar (' ');
exit when Col mod 8 = 0;
end loop;
else
Write_Char (C);
Col := Col + 1;
end if;
end Wchar;
-- Start of processing for Fatal_Error
begin
if Err then
raise Bad_ALI_Format;
end if;
Set_Standard_Error;
Write_Str ("fatal error: file ");
Write_Name (F);
Write_Str (" is incorrectly formatted");
Write_Eol;
Write_Str
("make sure you are using consistent versions of gcc/gnatbind");
Write_Eol;
-- Find start of line
Ptr1 := P;
while Ptr1 > T'First
and then T (Ptr1 - 1) /= CR
and then T (Ptr1 - 1) /= LF
loop
Ptr1 := Ptr1 - 1;
end loop;
Write_Int (Int (Line));
Write_Str (". ");
if Line < 100 then
Write_Char (' ');
end if;
if Line < 10 then
Write_Char (' ');
end if;
Col := 0;
Ptr2 := Ptr1;
while Ptr2 < T'Last
and then T (Ptr2) /= CR
and then T (Ptr2) /= LF
loop
Wchar (T (Ptr2));
Ptr2 := Ptr2 + 1;
end loop;
Write_Eol;
Write_Str (" ");
Col := 0;
while Ptr1 < P loop
if T (Ptr1) = HT then
Wchar (HT);
else
Wchar (' ');
end if;
Ptr1 := Ptr1 + 1;
end loop;
Wchar ('|');
Write_Eol;
Exit_Program (E_Fatal);
end Fatal_Error;
------------------------
-- Fatal_Error_Ignore --
------------------------
procedure Fatal_Error_Ignore is
begin
if not Ignore_Errors then
Fatal_Error;
end if;
end Fatal_Error_Ignore;
--------------
-- Get_Name --
--------------
function Get_Name
(Lower : Boolean := False;
Ignore_Spaces : Boolean := False) return Name_Id
is
begin
Name_Len := 0;
Skip_Space;
if At_Eol then
if Ignore_Errors then
return Error_Name;
else
Fatal_Error;
end if;
end if;
loop
Name_Len := Name_Len + 1;
Name_Buffer (Name_Len) := Getc;
exit when At_End_Of_Field and not Ignore_Spaces;
if Name_Buffer (1) = '"' then
exit when Name_Len > 1 and then Name_Buffer (Name_Len) = '"';
else
exit when (At_End_Of_Field and not Ignore_Spaces)
or else Nextc = '(' or else Nextc = ')'
or else Nextc = '{' or else Nextc = '}'
or else Nextc = '<' or else Nextc = '>'
or else Nextc = '=';
end if;
end loop;
-- Convert file name to all lower case if file names are not case
-- sensitive. This ensures that we handle names in the canonical
-- lower case format, regardless of the actual case.
if Lower and not File_Names_Case_Sensitive then
Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
end if;
return Name_Find;
end Get_Name;
-------------
-- Get_Nat --
-------------
function Get_Nat return Nat is
V : Nat;
begin
Skip_Space;
V := 0;
loop
V := V * 10 + (Character'Pos (Getc) - Character'Pos ('0'));
exit when At_End_Of_Field;
exit when Nextc < '0' or Nextc > '9';
end loop;
return V;
end Get_Nat;
---------------
-- Get_Stamp --
---------------
function Get_Stamp return Time_Stamp_Type is
T : Time_Stamp_Type;
Start : Integer;
begin
Skip_Space;
if At_Eol then
if Ignore_Errors then
return Dummy_Time_Stamp;
else
Fatal_Error;
end if;
end if;
-- Following reads old style time stamp missing first two digits
if Nextc in '7' .. '9' then
T (1) := '1';
T (2) := '9';
Start := 3;
-- Normal case of full year in time stamp
else
Start := 1;
end if;
for J in Start .. T'Last loop
T (J) := Getc;
end loop;
return T;
end Get_Stamp;
----------
-- Getc --
----------
function Getc return Character is
begin
if P = T'Last then
return EOF;
else
P := P + 1;
return T (P - 1);
end if;
end Getc;
-----------
-- Nextc --
-----------
function Nextc return Character is
begin
return T (P);
end Nextc;
--------------
-- Skip_Eol --
--------------
procedure Skip_Eol is
begin
Skip_Space;
if not At_Eol then
if Ignore_Errors then
while not At_Eol loop
P := P + 1;
end loop;
else
Fatal_Error;
end if;
end if;
-- Loop to skip past blank lines (first time through skips this EOL)
while Nextc < ' ' and then Nextc /= EOF loop
if Nextc = LF then
Line := Line + 1;
end if;
P := P + 1;
end loop;
end Skip_Eol;
---------------
-- Skip_Line --
---------------
procedure Skip_Line is
begin
while not At_Eol loop
P := P + 1;
end loop;
Skip_Eol;
end Skip_Line;
----------------
-- Skip_Space --
----------------
procedure Skip_Space is
begin
while Nextc = ' ' or else Nextc = HT loop
P := P + 1;
end loop;
end Skip_Space;
-----------
-- Skipc --
-----------
procedure Skipc is
begin
if P /= T'Last then
P := P + 1;
end if;
end Skipc;
-- Start of processing for Scan_ALI
begin
First_Sdep_Entry := Sdep.Last + 1;
-- Acquire lines to be ignored
if Read_Xref then
Ignore := ('U' | 'W' | 'D' | 'X' => False, others => True);
-- Read_Lines parameter given
elsif Read_Lines /= "" then
Ignore := ('U' => False, others => True);
for J in Read_Lines'Range loop
Ignore (Read_Lines (J)) := False;
end loop;
-- Process Ignore_Lines parameter
else
Ignore := (others => False);
for J in Ignore_Lines'Range loop
pragma Assert (Ignore_Lines (J) /= 'U');
Ignore (Ignore_Lines (J)) := True;
end loop;
end if;
-- Setup ALI Table entry with appropriate defaults
ALIs.Increment_Last;
Id := ALIs.Last;
Set_Name_Table_Info (F, Int (Id));
ALIs.Table (Id) := (
Afile => F,
Compile_Errors => False,
First_Interrupt_State => Interrupt_States.Last + 1,
First_Sdep => No_Sdep_Id,
First_Unit => No_Unit_Id,
Float_Format => 'I',
Last_Interrupt_State => Interrupt_States.Last,
Last_Sdep => No_Sdep_Id,
Last_Unit => No_Unit_Id,
Locking_Policy => ' ',
Main_Priority => -1,
Main_Program => None,
No_Object => False,
Normalize_Scalars => False,
Ofile_Full_Name => Full_Object_File_Name,
Queuing_Policy => ' ',
Restrictions => Restrictions_Initial,
Sfile => No_Name,
Task_Dispatching_Policy => ' ',
Time_Slice_Value => -1,
WC_Encoding => '8',
Unit_Exception_Table => False,
Ver => (others => ' '),
Ver_Len => 0,
Interface => False,
Zero_Cost_Exceptions => False);
-- Now we acquire the input lines from the ALI file. Note that the
-- convention in the following code is that as we enter each section,
-- C is set to contain the first character of the following line.
C := Getc;
Check_Unknown_Line;
-- Acquire library version
if C /= 'V' then
-- The V line missing really indicates trouble, most likely it
-- means we don't have an ALI file at all, so here we give a
-- fatal error even if we are in Ignore_Errors mode.
Fatal_Error;
elsif Ignore ('V') then
Skip_Line;
else
Checkc (' ');
Skip_Space;
Checkc ('"');
for J in 1 .. Ver_Len_Max loop
C := Getc;
exit when C = '"';
ALIs.Table (Id).Ver (J) := C;
ALIs.Table (Id).Ver_Len := J;
end loop;
Skip_Eol;
end if;
C := Getc;
Check_Unknown_Line;
-- Acquire main program line if present
if C = 'M' then
if Ignore ('M') then
Skip_Line;
else
Checkc (' ');
Skip_Space;
C := Getc;
if C = 'F' then
ALIs.Table (Id).Main_Program := Func;
elsif C = 'P' then
ALIs.Table (Id).Main_Program := Proc;
else
P := P - 1;
Fatal_Error;
end if;
Skip_Space;
if not At_Eol then
if Nextc < 'A' then
ALIs.Table (Id).Main_Priority := Get_Nat;
end if;
Skip_Space;
if Nextc = 'T' then
P := P + 1;
Checkc ('=');
ALIs.Table (Id).Time_Slice_Value := Get_Nat;
end if;
Skip_Space;
Checkc ('W');
Checkc ('=');
ALIs.Table (Id).WC_Encoding := Getc;
end if;
Skip_Eol;
end if;
C := Getc;
end if;
-- Acquire argument lines
First_Arg := Args.Last + 1;
A_Loop : loop
Check_Unknown_Line;
exit A_Loop when C /= 'A';
if Ignore ('A') then
Skip_Line;
else
Checkc (' ');
Name_Len := 0;
while not At_Eol loop
Name_Len := Name_Len + 1;
Name_Buffer (Name_Len) := Getc;
end loop;
Args.Increment_Last;
Args.Table (Args.Last) := new String'(Name_Buffer (1 .. Name_Len));
Skip_Eol;
end if;
C := Getc;
end loop A_Loop;
-- Acquire P line
Check_Unknown_Line;
while C /= 'P' loop
if Ignore_Errors then
if C = EOF then
Fatal_Error;
else
Skip_Line;
end if;
else
Fatal_Error;
end if;
end loop;
if Ignore ('P') then
Skip_Line;
-- Process P line
else
NS_Found := False;
while not At_Eol loop
Checkc (' ');
Skip_Space;
C := Getc;
-- Processing for CE
if C = 'C' then
Checkc ('E');
ALIs.Table (Id).Compile_Errors := True;
-- Processing for FD/FG/FI
elsif C = 'F' then
Float_Format_Specified := Getc;
ALIs.Table (Id).Float_Format := Float_Format_Specified;
-- Processing for Lx
elsif C = 'L' then
Locking_Policy_Specified := Getc;
ALIs.Table (Id).Locking_Policy := Locking_Policy_Specified;
-- Processing for flags starting with N
elsif C = 'N' then
C := Getc;
-- Processing for NO
if C = 'O' then
ALIs.Table (Id).No_Object := True;
No_Object_Specified := True;
-- Processing for NR
elsif C = 'R' then
No_Run_Time_Mode := True;
Configurable_Run_Time_Mode := True;
-- Processing for NS
elsif C = 'S' then
ALIs.Table (Id).Normalize_Scalars := True;
Normalize_Scalars_Specified := True;
NS_Found := True;
-- Invalid switch starting with N
else
Fatal_Error_Ignore;
end if;
-- Processing for Qx
elsif C = 'Q' then
Queuing_Policy_Specified := Getc;
ALIs.Table (Id).Queuing_Policy := Queuing_Policy_Specified;
-- Processing for flags starting with S
elsif C = 'S' then
C := Getc;
-- Processing for SL
if C = 'L' then
ALIs.Table (Id).Interface := True;
-- Processing for SS
elsif C = 'S' then
Opt.Sec_Stack_Used := True;
-- Invalid switch starting with S
else
Fatal_Error_Ignore;
end if;
-- Processing for Tx
elsif C = 'T' then
Task_Dispatching_Policy_Specified := Getc;
ALIs.Table (Id).Task_Dispatching_Policy :=
Task_Dispatching_Policy_Specified;
-- Processing for switch starting with U
elsif C = 'U' then
C := Getc;
-- Processing for UA
if C = 'A' then
Unreserve_All_Interrupts_Specified := True;
-- Processing for UX
elsif C = 'X' then
ALIs.Table (Id).Unit_Exception_Table := True;
-- Invalid switches starting with U
else
Fatal_Error_Ignore;
end if;
-- Processing for ZX
elsif C = 'Z' then
C := Getc;
if C = 'X' then
ALIs.Table (Id).Zero_Cost_Exceptions := True;
Zero_Cost_Exceptions_Specified := True;
else
Fatal_Error_Ignore;
end if;
-- Invalid parameter
else
C := Getc;
Fatal_Error_Ignore;
end if;
end loop;
if not NS_Found then
No_Normalize_Scalars_Specified := True;
end if;
Skip_Eol;
end if;
C := Getc;
Check_Unknown_Line;
-- Acquire restrictions line
while C /= 'R' loop
if Ignore_Errors then
if C = EOF then
Fatal_Error;
else
Skip_Line;
end if;
else
Fatal_Error;
end if;
end loop;
if Ignore ('R') then
Skip_Line;
-- Process restrictions line
else
Scan_Restrictions : declare
Save_R : constant Restrictions_Info := Cumulative_Restrictions;
-- Save cumulative restrictions in case we have a fatal error
Bad_R_Line : exception;
-- Signal bad restrictions line
begin
Checkc (' ');
Skip_Space;
-- Acquire information for boolean restrictions
for R in All_Boolean_Restrictions loop
C := Getc;
case C is
when 'v' =>
ALIs.Table (Id).Restrictions.Violated (R) := True;
Cumulative_Restrictions.Violated (R) := True;
when 'r' =>
ALIs.Table (Id).Restrictions.Set (R) := True;
Cumulative_Restrictions.Set (R) := True;
when 'n' =>
null;
when others =>
Fatal_Error;
end case;
end loop;
-- Acquire information for parameter restrictions
for RP in All_Parameter_Restrictions loop
-- Acquire restrictions pragma information
case Getc is
when 'n' =>
null;
when 'r' =>
ALIs.Table (Id).Restrictions.Set (RP) := True;
declare
N : constant Integer := Integer (Get_Nat);
begin
ALIs.Table (Id).Restrictions.Value (RP) := N;
if Cumulative_Restrictions.Set (RP) then
Cumulative_Restrictions.Value (RP) :=
Integer'Min
(Cumulative_Restrictions.Value (RP), N);
else
Cumulative_Restrictions.Set (RP) := True;
Cumulative_Restrictions.Value (RP) := N;
end if;
end;
when others =>
Fatal_Error;
end case;
-- Acquire restrictions violations information
case Getc is
when 'n' =>
null;
when 'v' =>
ALIs.Table (Id).Restrictions.Violated (RP) := True;
Cumulative_Restrictions.Violated (RP) := True;
declare
N : constant Integer := Integer (Get_Nat);
pragma Unsuppress (Overflow_Check);
begin
ALIs.Table (Id).Restrictions.Count (RP) := N;
if RP in Checked_Max_Parameter_Restrictions then
Cumulative_Restrictions.Count (RP) :=
Integer'Max
(Cumulative_Restrictions.Count (RP), N);
else
Cumulative_Restrictions.Count (RP) :=
Cumulative_Restrictions.Count (RP) + N;
end if;
exception
when Constraint_Error =>
-- A constraint error comes from the addition in
-- the else branch. We reset to the maximum and
-- indicate that the real value is now unknown.
Cumulative_Restrictions.Value (RP) := Integer'Last;
Cumulative_Restrictions.Unknown (RP) := True;
end;
if Nextc = '+' then
Skipc;
ALIs.Table (Id).Restrictions.Unknown (RP) := True;
Cumulative_Restrictions.Unknown (RP) := True;
end if;
when others =>
Fatal_Error;
end case;
end loop;
Skip_Eol;
-- Here if error during scanning of restrictions line
exception
when Bad_R_Line =>
-- In Ignore_Errors mode, undo any changes to restrictions
-- from this unit, and continue on.
if Ignore_Errors then
Cumulative_Restrictions := Save_R;
ALIs.Table (Id).Restrictions := Restrictions_Initial;
-- In normal mode, this is a fatal error
else
Fatal_Error;
end if;
end Scan_Restrictions;
end if;
-- Acquire 'I' lines if present
C := Getc;
Check_Unknown_Line;
while C = 'I' loop
if Ignore ('I') then
Skip_Line;
else
declare
Int_Num : Nat;
I_State : Character;
Line_No : Nat;
begin
Int_Num := Get_Nat;
Skip_Space;
I_State := Getc;
Line_No := Get_Nat;
Interrupt_States.Append (
(Interrupt_Id => Int_Num,
Interrupt_State => I_State,
IS_Pragma_Line => Line_No));
ALIs.Table (Id).Last_Interrupt_State := Interrupt_States.Last;
Skip_Eol;
end;
end if;
C := Getc;
end loop;
-- Loop to acquire unit entries
U_Loop : loop
Check_Unknown_Line;
exit U_Loop when C /= 'U';
-- Note: as per spec, we never ignore U lines
Checkc (' ');
Skip_Space;
Units.Increment_Last;
if ALIs.Table (Id).First_Unit = No_Unit_Id then
ALIs.Table (Id).First_Unit := Units.Last;
end if;
Units.Table (Units.Last).Uname := Get_Name;
Units.Table (Units.Last).Predefined := Is_Predefined_Unit;
Units.Table (Units.Last).Internal := Is_Internal_Unit;
Units.Table (Units.Last).My_ALI := Id;
Units.Table (Units.Last).Sfile := Get_Name (Lower => True);
Units.Table (Units.Last).Pure := False;
Units.Table (Units.Last).Preelab := False;
Units.Table (Units.Last).No_Elab := False;
Units.Table (Units.Last).Shared_Passive := False;
Units.Table (Units.Last).RCI := False;
Units.Table (Units.Last).Remote_Types := False;
Units.Table (Units.Last).Has_RACW := False;
Units.Table (Units.Last).Init_Scalars := False;
Units.Table (Units.Last).Is_Generic := False;
Units.Table (Units.Last).Icasing := Mixed_Case;
Units.Table (Units.Last).Kcasing := All_Lower_Case;
Units.Table (Units.Last).Dynamic_Elab := False;
Units.Table (Units.Last).Elaborate_Body := False;
Units.Table (Units.Last).Set_Elab_Entity := False;
Units.Table (Units.Last).Version := "00000000";
Units.Table (Units.Last).First_With := Withs.Last + 1;
Units.Table (Units.Last).First_Arg := First_Arg;
Units.Table (Units.Last).Elab_Position := 0;
Units.Table (Units.Last).Interface := ALIs.Table (Id).Interface;
if Debug_Flag_U then
Write_Str (" ----> reading unit ");
Write_Int (Int (Units.Last));
Write_Str (" ");
Write_Unit_Name (Units.Table (Units.Last).Uname);
Write_Str (" from file ");
Write_Name (Units.Table (Units.Last).Sfile);
Write_Eol;
end if;
-- Check for duplicated unit in different files
declare
Info : constant Int := Get_Name_Table_Info
(Units.Table (Units.Last).Uname);
begin
if Info /= 0
and then Units.Table (Units.Last).Sfile /=
Units.Table (Unit_Id (Info)).Sfile
then
-- If Err is set then ignore duplicate unit name. This is the
-- case of a call from gnatmake, where the situation can arise
-- from substitution of source files. In such situations, the
-- processing in gnatmake will always result in any required
-- recompilations in any case, and if we consider this to be
-- an error we get strange cases (for example when a generic
-- instantiation is replaced by a normal package) where we
-- read the old ali file, decide to recompile, and then decide
-- that the old and new ali files are incompatible.
if Err then
null;
-- If Err is not set, then this is a fatal error. This is
-- the case of being called from the binder, where we must
-- definitely diagnose this as an error.
else
Set_Standard_Error;
Write_Str ("error: duplicate unit name: ");
Write_Eol;
Write_Str ("error: unit """);
Write_Unit_Name (Units.Table (Units.Last).Uname);
Write_Str (""" found in file """);
Write_Name_Decoded (Units.Table (Units.Last).Sfile);
Write_Char ('"');
Write_Eol;
Write_Str ("error: unit """);
Write_Unit_Name (Units.Table (Unit_Id (Info)).Uname);
Write_Str (""" found in file """);
Write_Name_Decoded (Units.Table (Unit_Id (Info)).Sfile);
Write_Char ('"');
Write_Eol;
Exit_Program (E_Fatal);
end if;
end if;
end;
Set_Name_Table_Info
(Units.Table (Units.Last).Uname, Int (Units.Last));
-- Scan out possible version and other parameters
loop
Skip_Space;
exit when At_Eol;
C := Getc;
-- Version field
if C in '0' .. '9' or else C in 'a' .. 'f' then
Units.Table (Units.Last).Version (1) := C;
for J in 2 .. 8 loop
C := Getc;
Units.Table (Units.Last).Version (J) := C;
end loop;
-- BN parameter (Body needed)
elsif C = 'B' then
C := Getc;
if C = 'N' then
Check_At_End_Of_Field;
Units.Table (Units.Last).Body_Needed_For_SAL := True;
else
Fatal_Error_Ignore;
end if;
-- DE parameter (Dynamic elaboration checks)
elsif C = 'D' then
C := Getc;
if C = 'E' then
Check_At_End_Of_Field;
Units.Table (Units.Last).Dynamic_Elab := True;
Dynamic_Elaboration_Checks_Specified := True;
else
Fatal_Error_Ignore;
end if;
-- EB/EE parameters
elsif C = 'E' then
C := Getc;
if C = 'B' then
Units.Table (Units.Last).Elaborate_Body := True;
elsif C = 'E' then
Units.Table (Units.Last).Set_Elab_Entity := True;
else
Fatal_Error_Ignore;
end if;
Check_At_End_Of_Field;
-- GE parameter (generic)
elsif C = 'G' then
C := Getc;
if C = 'E' then
Check_At_End_Of_Field;
Units.Table (Units.Last).Is_Generic := True;
else
Fatal_Error_Ignore;
end if;
-- IL/IS/IU parameters
elsif C = 'I' then
C := Getc;
if C = 'L' then
Units.Table (Units.Last).Icasing := All_Lower_Case;
elsif C = 'S' then
Units.Table (Units.Last).Init_Scalars := True;
Initialize_Scalars_Used := True;
elsif C = 'U' then
Units.Table (Units.Last).Icasing := All_Upper_Case;
else
Fatal_Error_Ignore;
end if;
Check_At_End_Of_Field;
-- KM/KU parameters
elsif C = 'K' then
C := Getc;
if C = 'M' then
Units.Table (Units.Last).Kcasing := Mixed_Case;
elsif C = 'U' then
Units.Table (Units.Last).Kcasing := All_Upper_Case;
else
Fatal_Error_Ignore;
end if;
Check_At_End_Of_Field;
-- NE parameter
elsif C = 'N' then
C := Getc;
if C = 'E' then
Units.Table (Units.Last).No_Elab := True;
Check_At_End_Of_Field;
else
Fatal_Error_Ignore;
end if;
-- PR/PU/PK parameters
elsif C = 'P' then
C := Getc;
if C = 'R' then
Units.Table (Units.Last).Preelab := True;
elsif C = 'U' then
Units.Table (Units.Last).Pure := True;
elsif C = 'K' then
Units.Table (Units.Last).Unit_Kind := 'p';
else
Fatal_Error_Ignore;
end if;
Check_At_End_Of_Field;
-- RC/RT parameters
elsif C = 'R' then
C := Getc;
if C = 'C' then
Units.Table (Units.Last).RCI := True;
elsif C = 'T' then
Units.Table (Units.Last).Remote_Types := True;
elsif C = 'A' then
Units.Table (Units.Last).Has_RACW := True;
else
Fatal_Error_Ignore;
end if;
Check_At_End_Of_Field;
elsif C = 'S' then
C := Getc;
if C = 'P' then
Units.Table (Units.Last).Shared_Passive := True;
elsif C = 'U' then
Units.Table (Units.Last).Unit_Kind := 's';
else
Fatal_Error_Ignore;
end if;
Check_At_End_Of_Field;
else
C := Getc;
Fatal_Error_Ignore;
end if;
end loop;
Skip_Eol;
-- Check if static elaboration model used
if not Units.Table (Units.Last).Dynamic_Elab
and then not Units.Table (Units.Last).Internal
then
Static_Elaboration_Model_Used := True;
end if;
C := Getc;
-- Scan out With lines for this unit
With_Loop : loop
Check_Unknown_Line;
exit With_Loop when C /= 'W';
if Ignore ('W') then
Skip_Line;
else
Checkc (' ');
Skip_Space;
Withs.Increment_Last;
Withs.Table (Withs.Last).Uname := Get_Name;
Withs.Table (Withs.Last).Elaborate := False;
Withs.Table (Withs.Last).Elaborate_All := False;
Withs.Table (Withs.Last).Elab_All_Desirable := False;
Withs.Table (Withs.Last).Interface := False;
-- Generic case with no object file available
if At_Eol then
Withs.Table (Withs.Last).Sfile := No_File;
Withs.Table (Withs.Last).Afile := No_File;
-- Normal case
else
Withs.Table (Withs.Last).Sfile := Get_Name (Lower => True);
Withs.Table (Withs.Last).Afile := Get_Name;
-- Scan out possible E, EA, and NE parameters
while not At_Eol loop
Skip_Space;
if Nextc = 'E' then
P := P + 1;
if At_End_Of_Field then
Withs.Table (Withs.Last).Elaborate := True;
elsif Nextc = 'A' then
P := P + 1;
Check_At_End_Of_Field;
Withs.Table (Withs.Last).Elaborate_All := True;
else
Checkc ('D');
Check_At_End_Of_Field;
-- Store ED indication unless ignore required
if not Ignore_ED then
Withs.Table (Withs.Last).Elab_All_Desirable :=
True;
end if;
end if;
end if;
end loop;
end if;
Skip_Eol;
end if;
C := Getc;
end loop With_Loop;
Units.Table (Units.Last).Last_With := Withs.Last;
Units.Table (Units.Last).Last_Arg := Args.Last;
-- If there are linker options lines present, scan them
Name_Len := 0;
Linker_Options_Loop : loop
Check_Unknown_Line;
exit Linker_Options_Loop when C /= 'L';
if Ignore ('L') then
Skip_Line;
else
Checkc (' ');
Skip_Space;
Checkc ('"');
loop
C := Getc;
if C < Character'Val (16#20#)
or else C > Character'Val (16#7E#)
then
Fatal_Error_Ignore;
elsif C = '{' then
C := Character'Val (0);
declare
V : Natural;
begin
V := 0;
for J in 1 .. 2 loop
C := Getc;
if C in '0' .. '9' then
V := V * 16 +
Character'Pos (C) -
Character'Pos ('0');
elsif C in 'A' .. 'F' then
V := V * 16 +
Character'Pos (C) -
Character'Pos ('A') +
10;
else
Fatal_Error_Ignore;
end if;
end loop;
Checkc ('}');
Add_Char_To_Name_Buffer (Character'Val (V));
end;
else
if C = '"' then
exit when Nextc /= '"';
C := Getc;
end if;
Add_Char_To_Name_Buffer (C);
end if;
end loop;
Add_Char_To_Name_Buffer (nul);
Skip_Eol;
end if;
C := Getc;
end loop Linker_Options_Loop;
-- Store the linker options entry if one was found
if Name_Len /= 0 then
Linker_Options.Increment_Last;
Linker_Options.Table (Linker_Options.Last).Name :=
Name_Enter;
Linker_Options.Table (Linker_Options.Last).Unit :=
Units.Last;
Linker_Options.Table (Linker_Options.Last).Internal_File :=
Is_Internal_File_Name (F);
Linker_Options.Table (Linker_Options.Last).Original_Pos :=
Linker_Options.Last;
end if;
end loop U_Loop;
-- End loop through units for one ALI file
ALIs.Table (Id).Last_Unit := Units.Last;
ALIs.Table (Id).Sfile := Units.Table (ALIs.Table (Id).First_Unit).Sfile;
-- Set types of the units (there can be at most 2 of them)
if ALIs.Table (Id).First_Unit /= ALIs.Table (Id).Last_Unit then
Units.Table (ALIs.Table (Id).First_Unit).Utype := Is_Body;
Units.Table (ALIs.Table (Id).Last_Unit).Utype := Is_Spec;
else
-- Deal with body only and spec only cases, note that the reason we
-- do our own checking of the name (rather than using Is_Body_Name)
-- is that Uname drags in far too much compiler junk!
Get_Name_String (Units.Table (Units.Last).Uname);
if Name_Buffer (Name_Len) = 'b' then
Units.Table (Units.Last).Utype := Is_Body_Only;
else
Units.Table (Units.Last).Utype := Is_Spec_Only;
end if;
end if;
-- Scan out external version references and put in hash table
E_Loop : loop
Check_Unknown_Line;
exit E_Loop when C /= 'E';
if Ignore ('E') then
Skip_Line;
else
Checkc (' ');
Skip_Space;
Name_Len := 0;
Name_Len := 0;
loop
C := Getc;
if C < ' ' then
Fatal_Error;
end if;
exit when At_End_Of_Field;
Add_Char_To_Name_Buffer (C);
end loop;
Version_Ref.Set (new String'(Name_Buffer (1 .. Name_Len)), True);
Skip_Eol;
end if;
C := Getc;
end loop E_Loop;
-- Scan out source dependency lines for this ALI file
ALIs.Table (Id).First_Sdep := Sdep.Last + 1;
D_Loop : loop
Check_Unknown_Line;
exit D_Loop when C /= 'D';
if Ignore ('D') then
Skip_Line;
else
Checkc (' ');
Skip_Space;
Sdep.Increment_Last;
Sdep.Table (Sdep.Last).Sfile := Get_Name (Lower => True);
Sdep.Table (Sdep.Last).Stamp := Get_Stamp;
Sdep.Table (Sdep.Last).Dummy_Entry :=
(Sdep.Table (Sdep.Last).Stamp = Dummy_Time_Stamp);
-- Acquire checksum value
Skip_Space;
declare
Ctr : Natural;
Chk : Word;
begin
Ctr := 0;
Chk := 0;
loop
exit when At_Eol or else Ctr = 8;
if Nextc in '0' .. '9' then
Chk := Chk * 16 +
Character'Pos (Nextc) - Character'Pos ('0');
elsif Nextc in 'a' .. 'f' then
Chk := Chk * 16 +
Character'Pos (Nextc) - Character'Pos ('a') + 10;
else
exit;
end if;
Ctr := Ctr + 1;
P := P + 1;
end loop;
if Ctr = 8 and then At_End_Of_Field then
Sdep.Table (Sdep.Last).Checksum := Chk;
else
Fatal_Error;
end if;
end;
-- Acquire subunit and reference file name entries
Sdep.Table (Sdep.Last).Subunit_Name := No_Name;
Sdep.Table (Sdep.Last).Rfile :=
Sdep.Table (Sdep.Last).Sfile;
Sdep.Table (Sdep.Last).Start_Line := 1;
if not At_Eol then
Skip_Space;
-- Here for subunit name
if Nextc not in '0' .. '9' then
Name_Len := 0;
while not At_End_Of_Field loop
Name_Len := Name_Len + 1;
Name_Buffer (Name_Len) := Getc;
end loop;
Sdep.Table (Sdep.Last).Subunit_Name := Name_Enter;
Skip_Space;
end if;
-- Here for reference file name entry
if Nextc in '0' .. '9' then
Sdep.Table (Sdep.Last).Start_Line := Get_Nat;
Checkc (':');
Name_Len := 0;
while not At_End_Of_Field loop
Name_Len := Name_Len + 1;
Name_Buffer (Name_Len) := Getc;
end loop;
Sdep.Table (Sdep.Last).Rfile := Name_Enter;
end if;
end if;
Skip_Eol;
end if;
C := Getc;
end loop D_Loop;
ALIs.Table (Id).Last_Sdep := Sdep.Last;
-- We must at this stage be at an Xref line or the end of file
if C = EOF then
return Id;
end if;
Check_Unknown_Line;
if C /= 'X' then
Fatal_Error;
end if;
-- If we are ignoring Xref sections we are done (we ignore all
-- remaining lines since only xref related lines follow X).
if Ignore ('X') and then not Debug_Flag_X then
return Id;
end if;
-- Loop through Xref sections
X_Loop : loop
Check_Unknown_Line;
exit X_Loop when C /= 'X';
-- Make new entry in section table
Xref_Section.Increment_Last;
Read_Refs_For_One_File : declare
XS : Xref_Section_Record renames
Xref_Section.Table (Xref_Section.Last);
Current_File_Num : Sdep_Id;
-- Keeps track of the current file number (changed by nn|)
begin
XS.File_Num := Sdep_Id (Get_Nat + Nat (First_Sdep_Entry) - 1);
XS.File_Name := Get_Name;
XS.First_Entity := Xref_Entity.Last + 1;
Current_File_Num := XS.File_Num;
Skip_Space;
Skip_Eol;
C := Nextc;
-- Loop through Xref entities
while C /= 'X' and then C /= EOF loop
Xref_Entity.Increment_Last;
Read_Refs_For_One_Entity : declare
XE : Xref_Entity_Record renames
Xref_Entity.Table (Xref_Entity.Last);
N : Nat;
procedure Read_Instantiation_Reference;
-- Acquire instantiation reference. Caller has checked
-- that current character is '[' and on return the cursor
-- is skipped past the corresponding closing ']'.
----------------------------------
-- Read_Instantiation_Reference --
----------------------------------
procedure Read_Instantiation_Reference is
Local_File_Num : Sdep_Id := Current_File_Num;
begin
Xref.Increment_Last;
declare
XR : Xref_Record renames Xref.Table (Xref.Last);
begin
P := P + 1; -- skip [
N := Get_Nat;
if Nextc = '|' then
XR.File_Num :=
Sdep_Id (N + Nat (First_Sdep_Entry) - 1);
Local_File_Num := XR.File_Num;
P := P + 1;
N := Get_Nat;
else
XR.File_Num := Local_File_Num;
end if;
XR.Line := N;
XR.Rtype := ' ';
XR.Col := 0;
-- Recursive call for next reference
if Nextc = '[' then
pragma Warnings (Off); -- kill recursion warning
Read_Instantiation_Reference;
pragma Warnings (On);
end if;
-- Skip closing bracket after recursive call
P := P + 1;
end;
end Read_Instantiation_Reference;
-- Start of processing for Read_Refs_For_One_Entity
begin
XE.Line := Get_Nat;
XE.Etype := Getc;
XE.Col := Get_Nat;
XE.Lib := (Getc = '*');
XE.Entity := Get_Name;
Current_File_Num := XS.File_Num;
-- Renaming reference is present
if Nextc = '=' then
P := P + 1;
XE.Rref_Line := Get_Nat;
if Getc /= ':' then
Fatal_Error;
end if;
XE.Rref_Col := Get_Nat;
-- No renaming reference present
else
XE.Rref_Line := 0;
XE.Rref_Col := 0;
end if;
Skip_Space;
-- See if type reference present
case Nextc is
when '<' => XE.Tref := Tref_Derived;
when '(' => XE.Tref := Tref_Access;
when '{' => XE.Tref := Tref_Type;
when others => XE.Tref := Tref_None;
end case;
-- Case of typeref field present
if XE.Tref /= Tref_None then
P := P + 1; -- skip opening bracket
if Nextc in 'a' .. 'z' then
XE.Tref_File_Num := No_Sdep_Id;
XE.Tref_Line := 0;
XE.Tref_Type := ' ';
XE.Tref_Col := 0;
XE.Tref_Standard_Entity :=
Get_Name (Ignore_Spaces => True);
else
N := Get_Nat;
if Nextc = '|' then
XE.Tref_File_Num :=
Sdep_Id (N + Nat (First_Sdep_Entry) - 1);
P := P + 1;
N := Get_Nat;
else
XE.Tref_File_Num := Current_File_Num;
end if;
XE.Tref_Line := N;
XE.Tref_Type := Getc;
XE.Tref_Col := Get_Nat;
XE.Tref_Standard_Entity := No_Name;
end if;
-- ??? Temporary workaround for nested generics case:
-- 4i4 Directories{1|4I9[4|6[3|3]]}
-- See C918-002
declare
Nested_Brackets : Natural := 0;
begin
loop
case Nextc is
when '[' =>
Nested_Brackets := Nested_Brackets + 1;
when ']' =>
Nested_Brackets := Nested_Brackets - 1;
when others =>
if Nested_Brackets = 0 then
exit;
end if;
end case;
Skipc;
end loop;
end;
P := P + 1; -- skip closing bracket
Skip_Space;
-- No typeref entry present
else
XE.Tref_File_Num := No_Sdep_Id;
XE.Tref_Line := 0;
XE.Tref_Type := ' ';
XE.Tref_Col := 0;
XE.Tref_Standard_Entity := No_Name;
end if;
XE.First_Xref := Xref.Last + 1;
-- Loop through cross-references for this entity
loop
Skip_Space;
if At_Eol then
Skip_Eol;
exit when Nextc /= '.';
P := P + 1;
end if;
Xref.Increment_Last;
declare
XR : Xref_Record renames Xref.Table (Xref.Last);
begin
N := Get_Nat;
if Nextc = '|' then
XR.File_Num :=
Sdep_Id (N + Nat (First_Sdep_Entry) - 1);
Current_File_Num := XR.File_Num;
P := P + 1;
N := Get_Nat;
else
XR.File_Num := Current_File_Num;
end if;
XR.Line := N;
XR.Rtype := Getc;
-- Imported entities reference as in:
-- 494b<c,__gnat_copy_attribs>25
-- ??? Simply skipped for now
if Nextc = '<' then
while Getc /= '>' loop
null;
end loop;
end if;
XR.Col := Get_Nat;
if Nextc = '[' then
Read_Instantiation_Reference;
end if;
end;
end loop;
-- Record last cross-reference
XE.Last_Xref := Xref.Last;
C := Nextc;
end Read_Refs_For_One_Entity;
end loop;
-- Record last entity
XS.Last_Entity := Xref_Entity.Last;
end Read_Refs_For_One_File;
C := Getc;
end loop X_Loop;
-- Here after dealing with xref sections
if C /= EOF and then C /= 'X' then
Fatal_Error;
end if;
return Id;
exception
when Bad_ALI_Format =>
return No_ALI_Id;
end Scan_ALI;
---------
-- SEq --
---------
function SEq (F1, F2 : String_Ptr) return Boolean is
begin
return F1.all = F2.all;
end SEq;
-----------
-- SHash --
-----------
function SHash (S : String_Ptr) return Vindex is
H : Word;
begin
H := 0;
for J in S.all'Range loop
H := H * 2 + Character'Pos (S (J));
end loop;
return Vindex (Vindex'First + Vindex (H mod Vindex'Range_Length));
end SHash;
end ALI;
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