gnatsym.adb: Adapt to modification of package Symbols...

2005-06-14  Vincent Celier  <celier@adacore.com>

	* gnatsym.adb: Adapt to modification of package Symbols: procedure
	Process is now in package Processing.

	* symbols.ads, symbols.adb:
	(Processing): New package, containing procedure Process

	* symbols-vms-alpha.adb:
	Replaced by symbols-vms.adb and symbols-processing-vms-alpha.adb

	* symbols-vms.adb, symbols-processing-vms-alpha.adb,
	symbols-processing-vms-ia64.adb: New files.

From-SVN: r101018

gcc/ada/gnatsym.adb

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 2003-2004 Free Software Foundation, Inc.          --
+--          Copyright (C) 2003-2005 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- --
@@ -253,7 +253,7 @@ begin
             Write_Line ("""");
          end if;
 
-         Process (Object_Files.Table (Object_File).all, Success);
+         Processing.Process (Object_Files.Table (Object_File).all, Success);
       end loop;
 
       --  Finalize the object file

gcc/ada/symbols-processing-vms-alpha.adb

+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                    S Y M B O L S . P R O C E S S I N G                   --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--          Copyright (C) 2003-2005 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This is the VMS Alpha version of this package
+
+separate (Symbols)
+package body Processing is
+
+   type Number is mod 2**16;
+   --  16 bits unsigned number for number of characters
+
+   GSD : constant Number := 10;
+   --  Code for the Global Symbol Definition section
+
+   C_SYM : constant Number := 1;
+   --  Code for a Symbol subsection
+
+   V_DEF_Mask  : constant Number := 2**1;
+   V_NORM_Mask : constant Number := 2**6;
+
+   B : Byte;
+
+   Number_Of_Characters : Natural := 0;
+   --  The number of characters of each section
+
+   --  The following variables are used by procedure Process when reading an
+   --  object file.
+
+   Code   : Number := 0;
+   Length : Natural := 0;
+
+   Dummy : Number;
+
+   Nchars : Natural := 0;
+   Flags  : Number  := 0;
+
+   Symbol : String (1 .. 255);
+   LSymb  : Natural;
+
+   procedure Get (N : out Number);
+   --  Read two bytes from the object file LSB first as unsigned 16 bit number
+
+   procedure Get (N : out Natural);
+   --  Read two bytes from the object file, LSByte first, as a Natural
+
+   ---------
+   -- Get --
+   ---------
+
+   procedure Get (N : out Number) is
+      C : Byte;
+      LSByte : Number;
+   begin
+      Read (File, C);
+      LSByte := Byte'Pos (C);
+      Read (File, C);
+      N := LSByte + (256 * Byte'Pos (C));
+   end Get;
+
+   procedure Get (N : out Natural) is
+      Result : Number;
+   begin
+      Get (Result);
+      N := Natural (Result);
+   end Get;
+
+   -------------
+   -- Process --
+   -------------
+
+   procedure Process
+     (Object_File : String;
+      Success     : out Boolean)
+   is
+   begin
+      --  Open the object file with Byte_IO. Return with Success = False if
+      --  this fails.
+
+      begin
+         Open (File, In_File, Object_File);
+      exception
+         when others =>
+            Put_Line
+              ("*** Unable to open object file """ & Object_File & """");
+            Success := False;
+            return;
+      end;
+
+      --  Assume that the object file has a correct format
+
+      Success := True;
+
+      --  Get the different sections one by one from the object file
+
+      while not End_Of_File (File) loop
+
+         Get (Code);
+         Get (Number_Of_Characters);
+         Number_Of_Characters := Number_Of_Characters - 4;
+
+         --  If this is not a Global Symbol Definition section, skip to the
+         --  next section.
+
+         if Code /= GSD then
+
+            for J in 1 .. Number_Of_Characters loop
+               Read (File, B);
+            end loop;
+
+         else
+
+            --  Skip over the next 4 bytes
+
+            Get (Dummy);
+            Get (Dummy);
+            Number_Of_Characters := Number_Of_Characters - 4;
+
+            --  Get each subsection in turn
+
+            loop
+               Get (Code);
+               Get (Nchars);
+               Get (Dummy);
+               Get (Flags);
+               Number_Of_Characters := Number_Of_Characters - 8;
+               Nchars := Nchars - 8;
+
+               --  If this is a symbol and the V_DEF flag is set, get the
+               --  symbol.
+
+               if Code = C_SYM and then ((Flags and V_DEF_Mask) /= 0) then
+                  --  First, reach the symbol length
+
+                  for J in 1 .. 25 loop
+                     Read (File, B);
+                     Nchars := Nchars - 1;
+                     Number_Of_Characters := Number_Of_Characters - 1;
+                  end loop;
+
+                  Length := Byte'Pos (B);
+                  LSymb := 0;
+
+                  --  Get the symbol characters
+
+                  for J in 1 .. Nchars loop
+                     Read (File, B);
+                     Number_Of_Characters := Number_Of_Characters - 1;
+                     if Length > 0 then
+                        LSymb := LSymb + 1;
+                        Symbol (LSymb) := B;
+                        Length := Length - 1;
+                     end if;
+                  end loop;
+
+                  --  Create the new Symbol
+
+                  declare
+                     S_Data : Symbol_Data;
+                  begin
+                     S_Data.Name := new String'(Symbol (1 .. LSymb));
+
+                     --  The symbol kind (Data or Procedure) depends on the
+                     --  V_NORM flag.
+
+                     if (Flags and V_NORM_Mask) = 0 then
+                        S_Data.Kind := Data;
+
+                     else
+                        S_Data.Kind := Proc;
+                     end if;
+
+                     --  Put the new symbol in the table
+
+                     Symbol_Table.Increment_Last (Complete_Symbols);
+                     Complete_Symbols.Table
+                       (Symbol_Table.Last (Complete_Symbols)) := S_Data;
+                  end;
+
+               else
+                  --  As it is not a symbol subsection, skip to the next
+                  --  subsection.
+
+                  for J in 1 .. Nchars loop
+                     Read (File, B);
+                     Number_Of_Characters := Number_Of_Characters - 1;
+                  end loop;
+               end if;
+
+               --  Exit the GSD section when number of characters reaches 0
+
+               exit when Number_Of_Characters = 0;
+            end loop;
+         end if;
+      end loop;
+
+      --  The object file has been processed, close it
+
+      Close (File);
+
+   exception
+      --  For any exception, output an error message, close the object file
+      --  and return with Success = False.
+
+      when X : others =>
+         Put_Line ("unexpected exception raised while processing """
+                   & Object_File & """");
+         Put_Line (Exception_Information (X));
+         Close (File);
+         Success := False;
+   end Process;
+
+end Processing;

gcc/ada/symbols-processing-vms-ia64.adb

+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                    S Y M B O L S . P R O C E S S I N G                   --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--          Copyright (C) 2004-2005 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This is the VMS/IA64 version of this package
+
+with Ada.IO_Exceptions;
+
+with Ada.Unchecked_Deallocation;
+
+separate (Symbols)
+package body Processing is
+
+   type String_Array is array (Positive range <>) of String_Access;
+   type Strings_Ptr is access String_Array;
+
+   procedure Free is
+     new Ada.Unchecked_Deallocation (String_Array, Strings_Ptr);
+
+   type Section_Header is record
+      Shname   : Integer;
+      Shtype   : Integer;
+      Shoffset : Integer;
+      Shsize   : Integer;
+      Shlink   : Integer;
+   end record;
+
+   type Section_Header_Array is array (Natural range <>) of Section_Header;
+   type Section_Header_Ptr is access Section_Header_Array;
+
+   procedure Free is
+     new Ada.Unchecked_Deallocation (Section_Header_Array, Section_Header_Ptr);
+
+   -------------
+   -- Process --
+   -------------
+
+   procedure Process
+     (Object_File : String;
+      Success     : out Boolean)
+   is
+      B : Byte;
+      H : Integer;
+      W : Integer;
+
+      Str : String (1 .. 1000) := (others => ' ');
+      Str_Last : Natural;
+
+      Strings : Strings_Ptr;
+
+      Shoff : Integer;
+      Shnum : Integer;
+      Shentsize : Integer;
+
+      Shname   : Integer;
+      Shtype   : Integer;
+      Shoffset : Integer;
+      Shsize   : Integer;
+      Shlink   : Integer;
+
+      Symtab_Index       : Natural := 0;
+      String_Table_Index : Natural := 0;
+
+      End_Symtab : Integer;
+
+      Stname : Integer;
+      Stinfo : Character;
+      Sttype : Integer;
+      Stbind : Integer;
+      Stshndx : Integer;
+
+      Section_Headers : Section_Header_Ptr;
+
+      Offset   : Natural := 0;
+
+      procedure Get_Byte (B : out Byte);
+      procedure Get_Half (H : out Integer);
+      procedure Get_Word (W : out Integer);
+      procedure Reset;
+
+      procedure Get_Byte (B : out Byte) is
+      begin
+         Byte_IO.Read (File, B);
+         Offset := Offset + 1;
+      end Get_Byte;
+
+      procedure Get_Half (H : out Integer) is
+         C1, C2 : Character;
+      begin
+         Get_Byte (C1); Get_Byte (C2);
+         H :=
+           Integer'(Character'Pos (C2)) * 256 + Integer'(Character'Pos (C1));
+      end Get_Half;
+
+      procedure Get_Word (W : out Integer) is
+         H1, H2 : Integer;
+      begin
+         Get_Half (H1); Get_Half (H2);
+         W := H2 * 256 * 256 + H1;
+      end Get_Word;
+
+      procedure Reset is
+      begin
+         Offset := 0;
+         Byte_IO.Reset (File);
+      end Reset;
+
+   begin
+      --  Open the object file with Byte_IO. Return with Success = False if
+      --  this fails.
+
+      begin
+         Open (File, In_File, Object_File);
+      exception
+         when others =>
+            Put_Line
+              ("*** Unable to open object file """ & Object_File & """");
+            Success := False;
+            return;
+      end;
+
+      --  Assume that the object file has a correct format
+
+      Success := True;
+
+      --  Skip ELF identification
+
+      while Offset < 16 loop
+         Get_Byte (B);
+      end loop;
+
+      --  Skip e_type
+
+      Get_Half (H);
+
+      --  Skip e_machine
+
+      Get_Half (H);
+
+      --  Skip e_version
+
+      Get_Word (W);
+
+      --  Skip e_entry
+
+      for J in 1 .. 8 loop
+         Get_Byte (B);
+      end loop;
+
+      --  Skip e_phoff
+
+      for J in 1 .. 8 loop
+         Get_Byte (B);
+      end loop;
+
+      Get_Word (Shoff);
+
+      --  Skip upper half of Shoff
+
+      for J in 1 .. 4 loop
+         Get_Byte (B);
+      end loop;
+
+      --  Skip e_flags
+
+      Get_Word (W);
+
+      --  Skip e_ehsize
+
+      Get_Half (H);
+
+      --  Skip e_phentsize
+
+      Get_Half (H);
+
+      --  Skip e_phnum
+
+      Get_Half (H);
+
+      Get_Half (Shentsize);
+
+      Get_Half (Shnum);
+
+      Section_Headers := new Section_Header_Array (0 .. Shnum - 1);
+
+      --  Go to Section Headers
+
+      while Offset < Shoff loop
+         Get_Byte (B);
+      end loop;
+
+      --  Reset Symtab_Index
+
+      Symtab_Index := 0;
+
+      for J in Section_Headers'Range loop
+         --  Get the data for each Section Header
+
+         Get_Word (Shname);
+         Get_Word (Shtype);
+
+         for K in 1 .. 16 loop
+            Get_Byte (B);
+         end loop;
+
+         Get_Word (Shoffset);
+         Get_Word (W);
+
+         Get_Word (Shsize);
+         Get_Word (W);
+
+         Get_Word (Shlink);
+
+         while (Offset - Shoff) mod Shentsize /= 0 loop
+            Get_Byte (B);
+         end loop;
+
+         --  If this is the Symbol Table Section Header, record its index
+
+         if Shtype = 2 then
+            Symtab_Index := J;
+         end if;
+
+         Section_Headers (J) := (Shname, Shtype, Shoffset, Shsize, Shlink);
+      end loop;
+
+      if Symtab_Index = 0 then
+         Success := False;
+         return;
+      end if;
+
+      End_Symtab :=
+        Section_Headers (Symtab_Index).Shoffset +
+        Section_Headers (Symtab_Index).Shsize;
+
+      String_Table_Index := Section_Headers (Symtab_Index).Shlink;
+      Strings :=
+        new String_Array (1 .. Section_Headers (String_Table_Index).Shsize);
+
+      --  Go get the String Table section for the Symbol Table
+
+      Reset;
+
+      while Offset < Section_Headers (String_Table_Index).Shoffset loop
+         Get_Byte (B);
+      end loop;
+
+      Offset := 0;
+
+      Get_Byte (B);  --  zero
+
+      while Offset < Section_Headers (String_Table_Index).Shsize loop
+         Str_Last := 0;
+
+         loop
+            Get_Byte (B);
+            if B /= ASCII.NUL then
+               Str_Last := Str_Last + 1;
+               Str (Str_Last) := B;
+
+            else
+               Strings (Offset - Str_Last - 1) :=
+                 new String'(Str (1 .. Str_Last));
+               exit;
+            end if;
+         end loop;
+      end loop;
+
+      --  Go get the Symbol Table
+
+      Reset;
+
+      while Offset < Section_Headers (Symtab_Index).Shoffset loop
+         Get_Byte (B);
+      end loop;
+
+      while Offset < End_Symtab loop
+         Get_Word (Stname);
+         Get_Byte (Stinfo);
+         Get_Byte (B);
+         Get_Half (Stshndx);
+         for J in 1 .. 4 loop
+            Get_Word (W);
+         end loop;
+
+         Sttype := Integer'(Character'Pos (Stinfo)) mod 16;
+         Stbind := Integer'(Character'Pos (Stinfo)) / 16;
+
+         if (Sttype = 1 or else Sttype = 2)
+              and then Stbind /= 0
+              and then Stshndx /= 0
+         then
+            declare
+               S_Data : Symbol_Data;
+            begin
+               S_Data.Name := new String'(Strings (Stname).all);
+
+               if Sttype = 1 then
+                  S_Data.Kind := Data;
+
+               else
+                  S_Data.Kind := Proc;
+               end if;
+
+               --  Put the new symbol in the table
+
+               Symbol_Table.Increment_Last (Complete_Symbols);
+               Complete_Symbols.Table
+                 (Symbol_Table.Last (Complete_Symbols)) := S_Data;
+            end;
+         end if;
+      end loop;
+
+      --  The object file has been processed, close it
+
+      Close (File);
+
+      --  Free the allocated memory
+
+      Free (Section_Headers);
+
+      for J in Strings'Range loop
+         if Strings (J) /= null then
+            Free (Strings (J));
+         end if;
+      end loop;
+
+      Free (Strings);
+
+   exception
+      --  For any exception, output an error message, close the object file
+      --  and return with Success = False.
+
+      when Ada.IO_Exceptions.End_Error =>
+         Close (File);
+
+      when X : others =>
+         Put_Line ("unexpected exception raised while processing """
+                   & Object_File & """");
+         Put_Line (Exception_Information (X));
+         Close (File);
+         Success := False;
+   end Process;
+
+end Processing;

gcc/ada/symbols-vms-alpha.adb → gcc/ada/symbols-vms.adb

@@ -36,7 +36,8 @@ package body Symbols is
    Symbol_Vector   : constant String := "SYMBOL_VECTOR=(";
    Equal_Data      : constant String := "=DATA)";
    Equal_Procedure : constant String := "=PROCEDURE)";
-   Gsmatch         : constant String := "gsmatch=lequal,";
+   Gsmatch         : constant String := "gsmatch=";
+   Gsmatch_Lequal  : constant String := "gsmatch=lequal,";
 
    Symbol_File_Name : String_Access := null;
    --  Name of the symbol file
@@ -69,50 +70,12 @@ package body Symbols is
    package Byte_IO is new Ada.Sequential_IO (Byte);
    use Byte_IO;
 
-   type Number is mod 2**16;
-   --  16 bits unsigned number for number of characters
-
-   GSD : constant Number := 10;
-   --  Code for the Global Symbol Definition section
-
-   C_SYM : constant Number := 1;
-   --  Code for a Symbol subsection
-
-   V_DEF_Mask  : constant Number := 2**1;
-   V_NORM_Mask : constant Number := 2**6;
-
    File : Byte_IO.File_Type;
    --  Each object file is read as a stream of bytes (characters)
 
-   B : Byte;
-
-   Number_Of_Characters : Natural := 0;
-   --  The number of characters of each section
-
-   --  The following variables are used by procedure Process when reading an
-   --  object file.
-
-   Code   : Number := 0;
-   Length : Natural := 0;
-
-   Dummy : Number;
-
-   Nchars : Natural := 0;
-   Flags  : Number  := 0;
-
-   Symbol : String (1 .. 255);
-   LSymb  : Natural;
-
    function Equal (Left, Right : Symbol_Data) return Boolean;
    --  Test for equality of symbols
 
-   procedure Get (N : out Number);
-   --  Read two bytes from the object file LSB first as unsigned 16 bit number
-
-   procedure Get (N : out Natural);
-   --  Read two bytes from the object file, LSByte first, as a Natural
-
-
    function Image (N : Integer) return String;
    --  Returns the image of N, without the initial space
 
@@ -129,27 +92,6 @@ package body Symbols is
              Left.Present = Right.Present;
    end Equal;
 
-   ---------
-   -- Get --
-   ---------
-
-   procedure Get (N : out Number) is
-      C : Byte;
-      LSByte : Number;
-   begin
-      Read (File, C);
-      LSByte := Byte'Pos (C);
-      Read (File, C);
-      N := LSByte + (256 * Byte'Pos (C));
-   end Get;
-
-   procedure Get (N : out Natural) is
-      Result : Number;
-   begin
-      Get (Result);
-      N := Natural (Result);
-   end Get;
-
    -----------
    -- Image --
    -----------
@@ -343,7 +285,7 @@ package body Symbols is
                   return;
                end if;
 
-            --  Lines with "gsmatch=equal,<Major_ID>,<Minor_Id>
+            --  Lines with "gsmatch=lequal," or "gsmatch=equal,"
 
             elsif Last > Gsmatch'Length
               and then Line (1 .. Gsmatch'Length) = Gsmatch
@@ -355,6 +297,27 @@ package body Symbols is
                   ID     : Integer;
 
                begin
+                  --  First, look for the first coma
+
+                  loop
+                     if Start >= Last - 1 then
+                        OK := False;
+                        exit;
+
+                     elsif Line (Start) = ',' then
+                        Start := Start + 1;
+                        exit;
+
+                     else
+                        Start := Start + 1;
+                     end if;
+                  end loop;
+
+                  Finish := Start;
+
+                  --  If the comma is found, get the Major and the Minor IDs
+
+                  if OK then
                      loop
                         if Line (Finish) not in '0' .. '9'
                           or else Finish >= Last - 1
@@ -367,6 +330,7 @@ package body Symbols is
 
                         Finish := Finish + 1;
                      end loop;
+                  end if;
 
                   if OK then
                      ID := Integer'Value (Line (Start .. Finish));
@@ -445,150 +409,11 @@ package body Symbols is
       end if;
    end Initialize;
 
-   -------------
-   -- Process --
-   -------------
-
-   procedure Process
-     (Object_File : String;
-      Success     : out Boolean)
-   is
-   begin
-      --  Open the object file with Byte_IO. Return with Success = False if
-      --  this fails.
-
-      begin
-         Open (File, In_File, Object_File);
-      exception
-         when others =>
-            Put_Line
-              ("*** Unable to open object file """ & Object_File & """");
-            Success := False;
-            return;
-      end;
-
-      --  Assume that the object file has a correct format
-
-      Success := True;
-
-      --  Get the different sections one by one from the object file
-
-      while not End_Of_File (File) loop
-
-         Get (Code);
-         Get (Number_Of_Characters);
-         Number_Of_Characters := Number_Of_Characters - 4;
-
-         --  If this is not a Global Symbol Definition section, skip to the
-         --  next section.
-
-         if Code /= GSD then
-
-            for J in 1 .. Number_Of_Characters loop
-               Read (File, B);
-            end loop;
-
-         else
-
-            --  Skip over the next 4 bytes
-
-            Get (Dummy);
-            Get (Dummy);
-            Number_Of_Characters := Number_Of_Characters - 4;
-
-            --  Get each subsection in turn
-
-            loop
-               Get (Code);
-               Get (Nchars);
-               Get (Dummy);
-               Get (Flags);
-               Number_Of_Characters := Number_Of_Characters - 8;
-               Nchars := Nchars - 8;
-
-               --  If this is a symbol and the V_DEF flag is set, get the
-               --  symbol.
-
-               if Code = C_SYM and then ((Flags and V_DEF_Mask) /= 0) then
-                  --  First, reach the symbol length
-
-                  for J in 1 .. 25 loop
-                     Read (File, B);
-                     Nchars := Nchars - 1;
-                     Number_Of_Characters := Number_Of_Characters - 1;
-                  end loop;
-
-                  Length := Byte'Pos (B);
-                  LSymb := 0;
-
-                  --  Get the symbol characters
-
-                  for J in 1 .. Nchars loop
-                     Read (File, B);
-                     Number_Of_Characters := Number_Of_Characters - 1;
-                     if Length > 0 then
-                        LSymb := LSymb + 1;
-                        Symbol (LSymb) := B;
-                        Length := Length - 1;
-                     end if;
-                  end loop;
-
-                  --  Create the new Symbol
-
-                  declare
-                     S_Data : Symbol_Data;
-                  begin
-                     S_Data.Name := new String'(Symbol (1 .. LSymb));
-
-                     --  The symbol kind (Data or Procedure) depends on the
-                     --  V_NORM flag.
-
-                     if (Flags and V_NORM_Mask) = 0 then
-                        S_Data.Kind := Data;
-
-                     else
-                        S_Data.Kind := Proc;
-                     end if;
-
-                     --  Put the new symbol in the table
-
-                     Symbol_Table.Increment_Last (Complete_Symbols);
-                     Complete_Symbols.Table
-                       (Symbol_Table.Last (Complete_Symbols)) := S_Data;
-                  end;
-
-               else
-                  --  As it is not a symbol subsection, skip to the next
-                  --  subsection.
-
-                  for J in 1 .. Nchars loop
-                     Read (File, B);
-                     Number_Of_Characters := Number_Of_Characters - 1;
-                  end loop;
-               end if;
-
-               --  Exit the GSD section when number of characters reaches 0
-
-               exit when Number_Of_Characters = 0;
-            end loop;
-         end if;
-      end loop;
-
-      --  The object file has been processed, close it
-
-      Close (File);
+   ----------------
+   -- Processing --
+   ----------------
 
-   exception
-      --  For any exception, output an error message, close the object file
-      --  and return with Success = False.
-
-      when X : others =>
-         Put_Line ("unexpected exception raised while processing """
-                   & Object_File & """");
-         Put_Line (Exception_Information (X));
-         Close (File);
-         Success := False;
-   end Process;
+   package body Processing is separate;
 
    --------------
    -- Finalize --
@@ -668,6 +493,11 @@ package body Symbols is
                   Success := False;
                   return;
 
+               --  Any symbol that is undefined in the reference symbol file
+               --  triggers an increase of the Major ID, because the new
+               --  version of the library is no longer compatible with
+               --  existing executables.
+
                elsif Soft_Major_ID then
                   Major_ID := Major_ID + 1;
                   Minor_ID := 0;
@@ -677,6 +507,11 @@ package body Symbols is
 
                Original_Symbols.Table (Index_1).Present := False;
                Free (Original_Symbols.Table (Index_1).Name);
+
+               if Soft_Minor_ID then
+                  Minor_ID := Minor_ID + 1;
+                  Soft_Minor_ID := False;
+               end if;
             end if;
          end loop;
 
@@ -738,7 +573,7 @@ package body Symbols is
 
             --  Put the version IDs
 
-            Put (File, Gsmatch);
+            Put (File, Gsmatch_Lequal);
             Put (File, Image (Major_ID));
             Put (File, ',');
             Put_Line  (File, Image (Minor_ID));

gcc/ada/symbols.adb

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 2003 Free Software Foundation, Inc.               --
+--          Copyright (C) 2003-2005 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- --
@@ -54,6 +54,12 @@ package body Symbols is
       Success := False;
    end Initialize;
 
+   ----------------
+   -- Processing --
+   ----------------
+
+   package body Processing is
+
       -------------
       -- Process --
       -------------
@@ -67,6 +73,8 @@ package body Symbols is
          Success := False;
       end Process;
 
+   end Processing;
+
    --------------
    -- Finalize --
    --------------

gcc/ada/symbols.ads

@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 2003-2004 Free Software Foundation, Inc.          --
+--          Copyright (C) 2003-2005 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- --
@@ -86,12 +86,21 @@ package Symbols is
    --  Processing any object file. Depending on the platforms and the
    --  circumstances, additional messages may be issued if Quiet is False.
 
+   package Processing is
+
+   --  This package, containing a single visible procedure Process, exists so
+   --  that it can be a subunits, for some platforms (such as VMS Alpha and
+   --  IA64), the body of package Symbols is common, while the subunit
+   --  Processing is not.
+
       procedure Process
         (Object_File : String;
          Success     : out Boolean);
       --  Get the symbols from an object file. Success is set to True if the
       --  object file exists and has the expected format.
 
+   end Processing;
+
    procedure Finalize
      (Quiet   : Boolean;
       Success : out Boolean);