fpc/compiler/utils/ppudump.pp

{
    $Id$
    Copyright (c) 1998-2002 by the FPC Development Team

    Dumps the contents of a FPC unit file (PPU File)

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT 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
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 ****************************************************************************}
{$ifdef TP}
  {$N+,E+}
{$endif}
program pppdump;
uses
  ppu;

const
  Version   = 'Version 1.10';
  Title     = 'PPU-Analyser';
  Copyright = 'Copyright (c) 1998-2002 by the Free Pascal Development Team';

{ verbosity }
  v_none           = $0;
  v_header         = $1;
  v_defs           = $2;
  v_syms           = $4;
  v_interface      = $8;
  v_implementation = $10;
  v_browser        = $20;
  v_all            = $ff;

type
  { Copied from systems.pas }
  ttargetcpu=
  (
        no_cpu,                   { 0 }
        i386,                     { 1 }
        m68k,                     { 2 }
        alpha,                    { 3 }
        powerpc,                  { 4 }
        sparc,                    { 5 }
        vm                        { 6 }
  );

var
  ppufile     : tppufile;
  space       : string;
  read_member : boolean;
  unitindex   : longint;
  verbose     : longint;

{****************************************************************************
                          Helper Routines
****************************************************************************}

const has_errors : boolean = false;
Procedure Error(const S : string);
Begin
   Writeln(S);
   has_errors:=true;
End;

Function Target2Str(w:longint):string;
type
       { taken from systems.pas }
       ttarget =
       (
             target_none,               { 0 }
             target_i386_GO32V1,        { 1 }
             target_i386_GO32V2,        { 2 }
             target_i386_linux,         { 3 }
             target_i386_OS2,           { 4 }
             target_i386_Win32,         { 5 }
             target_i386_freebsd,       { 6 }
             target_m68k_Amiga,         { 7 }
             target_m68k_Atari,         { 8 }
             target_m68k_Mac,           { 9 }
             target_m68k_linux,         { 10 }
             target_m68k_PalmOS,        { 11 }
             target_alpha_linux,        { 12 }
             target_powerpc_linux,      { 13 }
             target_powerpc_macos,      { 14 }
             target_i386_sunos,         { 15 }
             target_i386_beos,          { 16 }
             target_i386_netbsd,        { 17 }
             target_m68k_netbsd,        { 18 }
             target_i386_Netware,       { 19 }
             target_i386_qnx,           { 20 }
             target_i386_wdosx,         { 21 }
             target_sparc_sunos,        { 22 }
             target_sparc_linux         { 23 }
       );
const
  Targets : array[ttarget] of string[16]=(
  { 0 }   'none',
  { 1 }   'GO32V1',
  { 2 }   'GO32V2',
  { 3 }   'Linux-i386',
  { 4 }   'OS/2',
  { 5 }   'Win32',
  { 6 }   'FreeBSD-i386',
  { 7 }   'Amiga',
  { 8 }   'Atari',
  { 9 }   'MacOS-m68k',
  { 10 }  'Linux-m68k',
  { 11 }  'PalmOS-m68k',
  { 12 }  'Linux-alpha',
  { 13 }  'Linux-ppc',
  { 14 }  'MacOS-ppc',
  { 15 }  'Solaris-i386',
  { 16 }  'BeOS-i386',
  { 17 }  'NetBSD-i386',
  { 18 }  'NetBSD-m68k',
  { 19 }  'Netware',
  { 20 }  'Qnx-i386',
  { 21 }  'WDOSX-i386',
  { 22 }  'Solaris-sparc',
  { 23 }  'Linux-sparc'
  );
begin
  if w<=ord(high(ttarget)) then
    Target2Str:=Targets[ttarget(w)]
  else
    Target2Str:='<Unknown>';
end;


Function Cpu2Str(w:longint):string;
const
  CpuTxt : array[ttargetcpu] of string[7]=
    ('none','i386','m68k','alpha','powerpc','sparc','vis');
begin
  if w<=ord(high(ttargetcpu)) then
    Cpu2Str:=CpuTxt[ttargetcpu(w)]
  else
    Cpu2Str:='<Unknown>';
end;


function PPUFlags2Str(flags:longint):string;
type
  tflagopt=record
    mask : longint;
    str  : string[30];
  end;
const
  flagopts=15;
  flagopt : array[1..flagopts] of tflagopt=(
    (mask: $1    ;str:'init'),
    (mask: $2    ;str:'final'),
    (mask: $4    ;str:'big_endian'),
    (mask: $8    ;str:'dbx'),
    (mask: $10   ;str:'browser'),
    (mask: $20   ;str:'in_library'),
    (mask: $40   ;str:'smart_linked'),
    (mask: $80   ;str:'static_linked'),
    (mask: $100  ;str:'shared_linked'),
    (mask: $200  ;str:'local_browser'),
    (mask: $400  ;str:'no_link'),
    (mask: $800  ;str:'has_resources'),
    (mask: $1000  ;str:'little_endian'),
    (mask: $2000  ;str:'release'),
    (mask: $4000  ;str:'local_threadvars')
  );
var
  i : longint;
  first  : boolean;
  s : string;
begin
  s:='';
  if flags<>0 then
   begin
     first:=true;
     for i:=1to flagopts do
      if (flags and flagopt[i].mask)<>0 then
       begin
         if first then
           first:=false
         else
           s:=s+', ';
         s:=s+flagopt[i].str;
       end;
   end
  else
   s:='none';
  PPUFlags2Str:=s;
end;


const
  HexTbl : array[0..15] of char='0123456789ABCDEF';
function HexB(b:byte):string;
begin
  HexB[0]:=#2;
  HexB[1]:=HexTbl[b shr 4];
  HexB[2]:=HexTbl[b and $f];
end;


function hexstr(val : cardinal;cnt : byte) : string;
const
  HexTbl : array[0..15] of char='0123456789ABCDEF';
var
  i : longint;
begin
  hexstr[0]:=char(cnt);
  for i:=cnt downto 1 do
   begin
     hexstr[i]:=hextbl[val and $f];
     val:=val shr 4;
   end;
end;


{****************************************************************************
                             Read Routines
****************************************************************************}

function getint64:int64;
var
  l1,l2 : longint;
begin
  l1:=ppufile.getlongint;
  l2:=ppufile.getlongint;
  getint64:=(int64(l2) shl 32) or qword(l1);
end;

Procedure ReadLinkContainer(const prefix:string);
{
  Read a serie of strings and write to the screen starting every line
  with prefix
}
  function maskstr(m:longint):string;
  const
    { link options }
    link_none    = $0;
    link_allways = $1;
    link_static  = $2;
    link_smart   = $4;
    link_shared  = $8;
  var
    s : string;
  begin
    s:='';
    if (m and link_allways)<>0 then
     s:=s+'always ';
    if (m and link_static)<>0 then
     s:=s+'static ';
    if (m and link_smart)<>0 then
     s:=s+'smart ';
    if (m and link_shared)<>0 then
     s:=s+'shared ';
    maskstr:=s;
  end;

var
  s : string;
  m : longint;
begin
  while not ppufile.endofentry do
   begin
     s:=ppufile.getstring;
     m:=ppufile.getlongint;
     WriteLn(prefix,s,' (',maskstr(m),')');
   end;
end;


Procedure ReadContainer(const prefix:string);
{
  Read a serie of strings and write to the screen starting every line
  with prefix
}
begin
  while not ppufile.endofentry do
   WriteLn(prefix,ppufile.getstring);
end;


Procedure ReadRef;
begin
  if (verbose and v_browser)=0 then
   exit;
  while (not ppufile.endofentry) and (not ppufile.error) do
   Writeln(space,'        - Refered : ',ppufile.getword,', (',ppufile.getlongint,',',ppufile.getword,')');
end;


Procedure ReadPosInfo;
var
  info : byte;
  fileindex,line,column : longint;
begin
  with ppufile do
   begin
     {
       info byte layout in bits:
       0-1 - amount of bytes for fileindex
       2-3 - amount of bytes for line
       4-5 - amount of bytes for column
     }
     info:=getbyte;
     case (info and $03) of
      0 : fileindex:=getbyte;
      1 : fileindex:=getword;
      2 : fileindex:=(getbyte shl 16) or getword;
      3 : fileindex:=getlongint;
     end;
     case ((info shr 2) and $03) of
      0 : line:=getbyte;
      1 : line:=getword;
      2 : line:=(getbyte shl 16) or getword;
      3 : line:=getlongint;
     end;
     case ((info shr 4) and $03) of
      0 : column:=getbyte;
      1 : column:=getword;
      2 : column:=(getbyte shl 16) or getword;
      3 : column:=getlongint;
     end;
     Writeln(fileindex,' (',line,',',column,')');
   end;
end;


function readderef(const s:string;skipnil:boolean):boolean;
type
  tdereftype = (derefnil,derefaktrecordindex,derefaktstaticindex,
                derefunit,derefrecord,derefindex,
                dereflocal,derefpara,derefaktlocalindex);
var
  b : tdereftype;
begin
  readderef:=true;
  repeat
    b:=tdereftype(ppufile.getbyte);
    case b of
      derefnil :
        begin
          if not skipnil then
           writeln('nil');
          readderef:=false;
          break;
        end;
      derefaktrecordindex :
        begin
          writeln('AktRecord ',s,' ',ppufile.getword);
          break;
        end;
      derefaktstaticindex :
        begin
          writeln('AktStatic ',s,' ',ppufile.getword);
          break;
        end;
      derefaktlocalindex :
        begin
          writeln('AktLocal ',s,' ',ppufile.getword);
          break;
        end;
      derefunit :
        begin
          writeln('Unit ',ppufile.getword);
          break;
        end;
      derefrecord :
        begin
          write('RecordDef ',ppufile.getword,', ');
        end;
      derefpara :
        begin
          write('Parameter of procdef ',ppufile.getword,', ');
        end;
      dereflocal :
        begin
          write('Local of procdef ',ppufile.getword,', ');
        end;
      derefindex :
        begin
          write(s,' ',ppufile.getword,', ');
        end;
      else
        begin
          writeln('!! unsupported dereftyp: ',ord(b));
          break;
        end;
    end;
  until false;
end;


function readdefref:boolean;
begin
  readdefref:=readderef('Definition',false);
end;


function readsymref:boolean;
begin
  readsymref:=readderef('Symbol',false);
end;


procedure readtype;
var
  b1,b2 : boolean;
begin
  b1:=readderef('Definition',true);
  b2:=readderef('Symbol',true);
  if not(b1 or b2) then
   Writeln('nil')
  else
   if (b1 and b2) then
    Writeln('!! Type has both definition and symbol stored');
end;


procedure readsymlist(const s:string);
type
  tsltype = (sl_none,
    sl_load,
    sl_call,
    sl_subscript,
    sl_vec
  );
const
  slstr : array[tsltype] of string[9] = ('',
    'load',
    'call',
    'subscript',
    'vec'
  );
var
  sl : tsltype;
begin
  readdefref;
  repeat
    sl:=tsltype(ppufile.getbyte);
    if sl=sl_none then
     break;
    write(s,'(',slstr[sl],') ');
    case sl of
      sl_call,
      sl_load,
      sl_subscript :
        readsymref;
      sl_vec :
        writeln(ppufile.getlongint);
    end;
  until false;
end;


{ Read abstract procdef and return if inline procdef }
type
  tproccalloption=(pocall_none,
    pocall_cdecl,         { procedure uses C styled calling }
    pocall_cppdecl,       { C++ calling conventions }
    pocall_compilerproc,  { Procedure is used for internal compiler calls }
    pocall_far16,         { Far16 for OS/2 }
    pocall_fpccall,       { FPC default calling }
    pocall_inline,        { Procedure is an assembler macro }
    pocall_internconst,   { procedure has constant evaluator intern }
    pocall_internproc,    { Procedure has compiler magic}
    pocall_palmossyscall, { procedure is a PalmOS system call }
    pocall_pascal,        { pascal standard left to right }
    pocall_register,      { procedure uses register (fastcall) calling }
    pocall_safecall,      { safe call calling conventions }
    pocall_stdcall,       { procedure uses stdcall call }
    pocall_system         { system call }
  );
  tproccalloptions=set of tproccalloption;
  tproctypeoption=(potype_none,
    potype_proginit,     { Program initialization }
    potype_unitinit,     { unit initialization }
    potype_unitfinalize, { unit finalization }
    potype_constructor,  { Procedure is a constructor }
    potype_destructor,   { Procedure is a destructor }
    potype_operator      { Procedure defines an operator }
  );
  tproctypeoptions=set of tproctypeoption;
  tprocoption=(po_none,
    po_classmethod,       { class method }
    po_virtualmethod,     { Procedure is a virtual method }
    po_abstractmethod,    { Procedure is an abstract method }
    po_staticmethod,      { static method }
    po_overridingmethod,  { method with override directive }
    po_methodpointer,     { method pointer, only in procvardef, also used for 'with object do' }
    po_containsself,      { self is passed explicit to the compiler }
    po_interrupt,         { Procedure is an interrupt handler }
    po_iocheck,           { IO checking should be done after a call to the procedure }
    po_assembler,         { Procedure is written in assembler }
    po_msgstr,            { method for string message handling }
    po_msgint,            { method for int message handling }
    po_exports,           { Procedure has export directive (needed for OS/2) }
    po_external,          { Procedure is external (in other object or lib)}
    po_savestdregs,       { save std regs cdecl and stdcall need that ! }
    po_saveregisters,     { save all registers }
    po_overload,          { procedure is declared with overload directive }
    po_varargs            { printf like arguments }
  );
  tprocoptions=set of tprocoption;
function read_abstract_proc_def:tproccalloption;
type
  tproccallopt=record
    mask : tproccalloption;
    str  : string[30];
  end;
  tproctypeopt=record
    mask : tproctypeoption;
    str  : string[30];
  end;
  tprocopt=record
    mask : tprocoption;
    str  : string[30];
  end;
const
  proccalloptionStr : array[tproccalloption] of string[14]=('',
     'CDecl',
     'CPPDecl',
     'CompilerProc',
     'Far16',
     'FPCCall',
     'Inline',
     'InternConst',
     'InternProc',
     'PalmOSSysCall',
     'Pascal',
     'Register',
     'SafeCall',
     'StdCall',
     'System'
   );
  proctypeopts=6;
  proctypeopt : array[1..proctypeopts] of tproctypeopt=(
     (mask:potype_proginit;    str:'ProgInit'),
     (mask:potype_unitinit;    str:'UnitInit'),
     (mask:potype_unitfinalize;str:'UnitFinalize'),
     (mask:potype_constructor; str:'Constructor'),
     (mask:potype_destructor;  str:'Destructor'),
     (mask:potype_operator;    str:'Operator')
  );
  procopts=18;
  procopt : array[1..procopts] of tprocopt=(
     (mask:po_classmethod;     str:'ClassMethod'),
     (mask:po_virtualmethod;   str:'VirtualMethod'),
     (mask:po_abstractmethod;  str:'AbstractMethod'),
     (mask:po_staticmethod;    str:'StaticMethod'),
     (mask:po_overridingmethod;str:'OverridingMethod'),
     (mask:po_methodpointer;   str:'MethodPointer'),
     (mask:po_containsself;    str:'ContainsSelf'),
     (mask:po_interrupt;       str:'Interrupt'),
     (mask:po_iocheck;         str:'IOCheck'),
     (mask:po_assembler;       str:'Assembler'),
     (mask:po_msgstr;          str:'MsgStr'),
     (mask:po_msgint;          str:'MsgInt'),
     (mask:po_exports;         str:'Exports'),
     (mask:po_external;        str:'External'),
     (mask:po_savestdregs;     str:'SaveStdRegs'),
     (mask:po_saveregisters;   str:'SaveRegisters'),
     (mask:po_overload;        str:'Overload'),
     (mask:po_varargs;         str:'VarArgs')
  );
  tvarspez : array[0..3] of string[5]=('Value','Const','Var  ','Out  ');
var
  proctypeoption  : tproctypeoption;
  proccalloption  : tproccalloption;
  procoptions     : tprocoptions;
  i,params : longint;
  first    : boolean;
begin
  write(space,'      Return type : ');
  readtype;
  writeln(space,'         Fpu used : ',ppufile.getbyte);
  proctypeoption:=tproctypeoption(ppufile.getbyte);
  if proctypeoption<>potype_none then
   begin
     write(space,'       TypeOption : ');
     first:=true;
     for i:=1to proctypeopts do
      if (proctypeopt[i].mask=proctypeoption) then
       begin
         if first then
           first:=false
         else
           write(', ');
         write(proctypeopt[i].str);
       end;
     writeln;
   end;
  proccalloption:=tproccalloption(ppufile.getbyte);
  read_abstract_proc_def:=proccalloption;
  writeln(space,'       CallOption : ',proccalloptionStr[proccalloption]);
  ppufile.getsmallset(procoptions);
  if procoptions<>[] then
   begin
     write(space,'          Options : ');
     first:=true;
     for i:=1to procopts do
      if (procopt[i].mask in procoptions) then
       begin
         if first then
           first:=false
         else
           write(', ');
         write(procopt[i].str);
       end;
     writeln;
   end;
  params:=ppufile.getword;
  writeln(space,' Nr of parameters : ',params);
  if params>0 then
   begin
     repeat
       write(space,'  - ',tvarspez[ppufile.getbyte],' : ');
       readtype;
       write(space,'    Default : ');
       readsymref;
       write(space,'    Symbol  : ');
       readsymref;
       dec(params);
     until params=0;
   end;
end;


procedure readcommonsym(const s:string);
type
  tsymoption=(sp_none,
    sp_public,
    sp_private,
    sp_published,
    sp_protected,
    sp_forwarddef,
    sp_static,
    sp_primary_typesym    { this is for typesym, to know who is the primary symbol of a def }
  );
  tsymoptions=set of tsymoption;
  tsymopt=record
    mask : tsymoption;
    str  : string[30];
  end;
const
  symopts=7;
  symopt : array[1..symopts] of tsymopt=(
     (mask:sp_public;         str:'Public'),
     (mask:sp_private;        str:'Private'),
     (mask:sp_published;      str:'Published'),
     (mask:sp_protected;      str:'Protected'),
     (mask:sp_forwarddef;     str:'ForwardDef'),
     (mask:sp_static;         str:'Static'),
     (mask:sp_primary_typesym;str:'PrimaryTypeSym')
  );
var
  symoptions : tsymoptions;
  i      : longint;
  first  : boolean;
begin
  writeln(space,'** Symbol Nr. ',ppufile.getword,' **');
  writeln(space,s,ppufile.getstring);
  ppufile.getsmallset(symoptions);
  if symoptions<>[] then
   begin
     write(space,'    File Pos: ');
     readposinfo;
     write(space,'  SymOptions: ');
     first:=true;
     for i:=1to symopts do
      if (symopt[i].mask in symoptions) then
       begin
         if first then
           first:=false
         else
           write(', ');
         write(symopt[i].str);
       end;
     writeln;
   end;
end;


procedure readcommondef(const s:string);
type
  tdefoption=(df_none,
    df_has_inittable,           { init data has been generated }
    df_has_rttitable            { rtti data has been generated }
  );
  tdefoptions=set of tdefoption;
var
  defopts : tdefoptions;
begin
  writeln(space,'** Definition Nr. ',ppufile.getword,' **');
  writeln(space,s);
  write  (space,'      Type symbol : ');
  readsymref;
  ppufile.getsmallset(defopts);
  if df_has_rttitable in defopts then
   begin
     write  (space,'      RTTI symbol : ');
     readsymref;
   end;
  if df_has_inittable in defopts then
   begin
     write  (space,'      Init symbol : ');
     readsymref;
   end;
end;


{****************************************************************************
                             Read Symbols Part
****************************************************************************}

procedure readsymbols;
Const
  vo_is_C_var = 2;
Type
  absolutetyp = (tovar,toasm,toaddr);
  tconsttyp = (constnone,
    constord,conststring,constreal,constbool,
    constint,constchar,constset,constpointer,constnil,
    constresourcestring
  );
var
  b      : byte;
  pc     : pchar;
  totalsyms,
  symcnt,
  i,j,len : longint;
begin
  symcnt:=1;
  with ppufile do
   begin
     if space<>'' then
      Writeln(space,'-----------------------------');
     if readentry=ibstartsyms then
      begin
        totalsyms:=getlongint;
        Writeln(space,'Number of symbols : ',totalsyms);
        Writeln(space,'Symtable datasize : ',getlongint);
        Writeln(space,'Symtable alignment: ',getlongint);
      end
     else
      begin
        totalsyms:=-1;
        Writeln('!! ibstartsym not found');
      end;
     repeat
       b:=readentry;
       if not (b in [iberror,ibendsyms]) then
        inc(symcnt);
       case b of

         ibunitsym :
           readcommonsym('Unit symbol ');

         iblabelsym :
           readcommonsym('Label symbol ');

         ibtypesym :
           begin
             readcommonsym('Type symbol ');
             write(space,' Result Type: ');
             readtype;
           end;

         ibprocsym :
           begin
             readcommonsym('Procedure symbol ');
             repeat
               write(space,'  Definition: ');
             until not readdefref;
           end;

         ibconstsym :
           begin
             readcommonsym('Constant symbol ');
             b:=getbyte;
             case tconsttyp(b) of
               constord :
                 begin
                   write   (space,'OrdinalType: ');
                   readtype;
                   writeln (space,'      Value: ',getlongint)
                 end;
               constpointer :
                 begin
                   write (space,' Pointer Type: ');
                   readtype;
                   writeln (space,'      Value: ',getlongint)
                 end;
               conststring,
               constresourcestring :
                 begin
                   len:=getlongint;
                   getmem(pc,len+1);
                   getdata(pc^,len);
                   writeln(space,'      Length: ',len);
                   writeln(space,'       Value: "',pc,'"');
                   freemem(pc,len+1);
                   if tconsttyp(b)=constresourcestring then
                    writeln(space,'       Index: ',getlongint);
                 end;
               constreal :
                 writeln(space,'       Value: ',getreal);
               constbool :
                 if getlongint<>0 then
                   writeln (space,'      Value : True')
                 else
                   writeln (space,'      Value: False');
               constint :
                 writeln(space,'       Value: ',getint64);
               constchar :
                 writeln(space,'       Value: "'+chr(getlongint)+'"');
               constset :
                 begin
                   write (space,'     Set Type: ');
                   readtype;
                   for i:=1to 4 do
                    begin
                      write (space,'       Value: ');
                      for j:=1to 8 do
                       begin
                         if j>1 then
                          write(',');
                         write(hexb(getbyte));
                       end;
                      writeln;
                    end;
                 end;
               else
                 Writeln ('!! Invalid unit format : Invalid const type encountered: ',b);
             end;
           end;

         ibvarsym :
           begin
             readcommonsym('Variable symbol ');
             writeln(space,'        Type: ',getbyte);
             if read_member then
               writeln(space,'     Address: ',getlongint);
             write  (space,'    Var Type: ');
             readtype;
             i:=getlongint;
             writeln(space,'     Options: ',i);
             if (i and vo_is_C_var)<>0 then
               writeln(space,' Mangledname: ',getstring);
           end;

         ibenumsym :
           begin
             readcommonsym('Enumeration symbol ');
             write  (space,'  Definition: ');
             readdefref;
             writeln(space,'       Value: ',getlongint);
           end;

         ibsyssym :
           begin
             readcommonsym('Internal system symbol ');
             writeln(space,' Internal Nr: ',getlongint);
           end;

         ibrttisym :
           begin
             readcommonsym('RTTI symbol ');
             writeln(space,'   RTTI Type: ',getbyte);
           end;

         ibtypedconstsym :
           begin
             readcommonsym('Typed constant ');
             write  (space,' Constant Type: ');
             readtype;
             writeln(space,'         Label: ',getstring);
             writeln(space,'   ReallyConst: ',(getbyte<>0));
           end;

         ibabsolutesym :
           begin
             readcommonsym('Absolute variable symbol ');
             writeln(space,'          Type: ',getbyte);
             if read_member then
               writeln(space,'       Address: ',getlongint);
             write  (space,'      Var Type: ');
             readtype;
             writeln(space,'       Options: ',getlongint);
             Write (space,'    Relocated to ');
             b:=getbyte;
             case absolutetyp(b) of
               tovar :
                 Writeln('Name : ',getstring);
               toasm :
                 Writeln('Assembler name : ',getstring);
               toaddr :
                 begin
                   Write('Address : ',getlongint);
                   WriteLn(' (Far: ',getbyte<>0,')');
                 end;
               else
                 Writeln ('!! Invalid unit format : Invalid absolute type encountered: ',b);
             end;
           end;

         ibpropertysym :
           begin
             readcommonsym('Property ');
             i:=getlongint;
             writeln(space,' PropOptions: ',i);
             if (i and 32)>0 then
              begin
                write  (space,'OverrideProp: ');
                readsymref;
              end
             else
              begin
                write  (space,'   Prop Type: ');
                readtype;
                writeln(space,'       Index: ',getlongint);
                writeln(space,'     Default: ',getlongint);
                write  (space,'  Index Type: ');
                readtype;
                write  (space,'  Readaccess: ');
                readsymlist(space+'         Sym: ');
                write  (space,' Writeaccess: ');
                readsymlist(space+'         Sym: ');
                write  (space,'Storedaccess: ');
                readsymlist(space+'         Sym: ');
              end;
           end;

         ibfuncretsym :
           begin
             readcommonsym('Func return value ');
             write  (space,' Return Type: ');
             readtype;
             writeln(space,'     Address: ',getlongint);
           end;

         iberror :
           begin
             Writeln('!! Error in PPU');
             exit;
           end;

         ibendsyms :
           break;

         else
           WriteLn('!! Skipping unsupported PPU Entry in Symbols: ',b);
       end;
       if not EndOfEntry then
        Writeln('!! Entry has more information stored');
     until false;
     if (totalsyms<>-1) and (symcnt-1<>totalsyms) then
       Writeln('!! Only read ',symcnt-1,' of ',totalsyms,' symbols');
   end;
end;


{****************************************************************************
                         Read defintions Part
****************************************************************************}

procedure getusedregisters_i386;
type
  tregister = (R_NO,
    R_EAX,R_ECX,R_EDX,R_EBX,R_ESP,R_EBP,R_ESI,R_EDI,
    R_AX,R_CX,R_DX,R_BX,R_SP,R_BP,R_SI,R_DI,
    R_AL,R_CL,R_DL,R_BL,R_AH,R_CH,R_BH,R_DH,
    R_CS,R_DS,R_ES,R_SS,R_FS,R_GS,
    R_ST,R_ST0,R_ST1,R_ST2,R_ST3,R_ST4,R_ST5,R_ST6,R_ST7,
    R_DR0,R_DR1,R_DR2,R_DR3,R_DR6,R_DR7,
    R_CR0,R_CR2,R_CR3,R_CR4,
    R_TR3,R_TR4,R_TR5,R_TR6,R_TR7,
    R_MM0,R_MM1,R_MM2,R_MM3,R_MM4,R_MM5,R_MM6,R_MM7,
    R_XMM0,R_XMM1,R_XMM2,R_XMM3,R_XMM4,R_XMM5,R_XMM6,R_XMM7
  );
  tregisterset = set of tregister;
  reg2strtable = array[tregister] of string[6];
const
  std_reg2str : reg2strtable = ('',
    'eax','ecx','edx','ebx','esp','ebp','esi','edi',
    'ax','cx','dx','bx','sp','bp','si','di',
    'al','cl','dl','bl','ah','ch','bh','dh',
    'cs','ds','es','ss','fs','gs',
    'st','st(0)','st(1)','st(2)','st(3)','st(4)','st(5)','st(6)','st(7)',
    'dr0','dr1','dr2','dr3','dr6','dr7',
    'cr0','cr2','cr3','cr4',
    'tr3','tr4','tr5','tr6','tr7',
    'mm0','mm1','mm2','mm3','mm4','mm5','mm6','mm7',
    'xmm0','xmm1','xmm2','xmm3','xmm4','xmm5','xmm6','xmm7'
  );
  firstsaveintreg = R_EAX;
  lastsaveintreg = R_EBX;
  firstsavefpureg = R_NO;
  lastsavefpureg = R_NO;
  firstsavemmreg = R_MM0;
  lastsavemmreg = R_MM7;
var
  regs: tregisterset;
  r: tregister;
  first: boolean;
begin
  first := true;
  ppufile.getnormalset(regs);
  for r := firstsaveintreg to lastsaveintreg do
    if r in regs then
      begin
        if not first then
          write(', ')
        else
          first := false;
        write(std_reg2str[r])
      end;
  if (firstsavefpureg <> R_NO) then
    for r := firstsavefpureg to lastsavefpureg do
      if r in regs then
        begin
          if not first then
            write(', ')
          else
            first := false;
          write(std_reg2str[r])
        end;
  if (firstsavemmreg <> R_NO) then
    for r := firstsavemmreg to lastsavemmreg do
      if r in regs then
        begin
          if not first then
            write(', ')
          else
            first := false;
          write(std_reg2str[r])
        end;
  writeln;
end;

procedure readdefinitions(start_read : boolean);
type
  tsettype  = (normset,smallset,varset);
  tbasetype = (
    uvoid,
    u8bit,u16bit,u32bit,u64bit,
    s8bit,s16bit,s32bit,s64bit,
    bool8bit,bool16bit,bool32bit,
    uchar,uwidechar
  );
  tobjectdeftype = (odt_none,
    odt_class,
    odt_object,
    odt_interfacecom,
    odt_interfacecorba,
    odt_cppclass
  );
var
  b : byte;
  oldread_member : boolean;
  totaldefs,l,j,
  defcnt : longint;
  calloption : tproccalloption;
  regs : set of char;
begin
  defcnt:=0;
  with ppufile do
   begin
     if space<>'' then
      Writeln(space,'-----------------------------');
     if not start_read then
       if readentry=ibstartdefs then
         begin
           totaldefs:=getlongint;
           Writeln(space,'Number of definitions: ',totaldefs);
         end
       else
         begin
           totaldefs:=-1;
           Writeln('!! ibstartdef not found');
         end;
     repeat
       b:=readentry;
       if not (b in [iberror,ibenddefs]) then
        inc(defcnt);
       case b of

         ibpointerdef :
           begin
             readcommondef('Pointer definition');
             write  (space,'     Pointed Type : ');
             readtype;
             writeln(space,'           Is Far : ',(getbyte<>0));
           end;

         iborddef :
           begin
             readcommondef('Ordinal definition');
             write  (space,'        Base type : ');
             b:=getbyte;
             case tbasetype(b) of
               uvoid     : writeln('uvoid');
               u8bit     : writeln('u8bit');
               u16bit    : writeln('u16bit');
               u32bit    : writeln('s32bit');
               u64bit    : writeln('u64bit');
               s8bit     : writeln('s8bit');
               s16bit    : writeln('s16bit');
               s32bit    : writeln('s32bit');
               s64bit    : writeln('s64bit');
               bool8bit  : writeln('bool8bit');
               bool16bit : writeln('bool16bit');
               bool32bit : writeln('bool32bit');
               uchar     : writeln('uchar');
               uwidechar : writeln('uwidechar');
               else        writeln('!! Warning: Invalid base type ',b);
             end;
             writeln(space,'            Range : ',getint64,' to ',getint64);
           end;

         ibfloatdef :
           begin
             readcommondef('Float definition');
             writeln(space,'       Float type : ',getbyte);
           end;

         ibarraydef :
           begin
             readcommondef('Array definition');
             write  (space,'     Element type : ');
             readtype;
             write  (space,'       Range Type : ');
             readtype;
             writeln(space,'            Range : ',getlongint,' to ',getlongint);
             writeln(space,'   Is Constructor : ',(getbyte<>0));
             writeln(space,'       Is Dynamic : ',(getbyte<>0));
           end;

         ibprocdef :
           begin
             readcommondef('Procedure definition');
             calloption:=read_abstract_proc_def;
             write  (space,'   Used Registers : ');
             case ttargetcpu(header.cpu) of
               i386 :
                 getusedregisters_i386
               else
                 begin
                   getnormalset(regs);
                   writeln('<not yet implemented>');
                 end;
             end;
             if (getbyte<>0) then
               writeln(space,'     Mangled name : ',getstring);
             writeln(space,'  Overload Number : ',getword);
             writeln(space,'           Number : ',getword);
             write  (space,'            Class : ');
             readdefref;
             write  (space,'          Procsym : ');
             readsymref;
             write  (space,'         File Pos : ');
             readposinfo;
             if (calloption=pocall_inline) then
              begin
                write  (space,'       FuncretSym : ');
                readdefref;
              end;
             space:='    '+space;
             { parast }
             readdefinitions(false);
             readsymbols;
             { localst }
             if (calloption=pocall_inline) or
                ((ppufile.header.flags and uf_local_browser) <> 0) then
              begin
                readdefinitions(false);
                readsymbols;
              end;
             delete(space,1,4);
           end;

         ibprocvardef :
           begin
             readcommondef('Procedural type (ProcVar) definition');
             read_abstract_proc_def;
           end;

         ibshortstringdef :
           begin
             readcommondef('ShortString definition');
             writeln(space,'           Length : ',getbyte);
           end;

         ibwidestringdef :
           begin
             readcommondef('WideString definition');
             writeln(space,'           Length : ',getlongint);
           end;

         ibansistringdef :
           begin
             readcommondef('AnsiString definition');
             writeln(space,'           Length : ',getlongint);
           end;

         iblongstringdef :
           begin
             readcommondef('Longstring definition');
             writeln(space,'           Length : ',getlongint);
           end;

         ibrecorddef :
           begin
             readcommondef('Record definition');
             writeln(space,'             Size : ',getlongint);
             {read the record definitions and symbols}
             space:='    '+space;
             oldread_member:=read_member;
             read_member:=true;
             readdefinitions(false);
             readsymbols;
             read_member:=oldread_member;
             Delete(space,1,4);
           end;

         ibobjectdef :
           begin
             readcommondef('Object/Class definition');
             b:=getbyte;
             write  (space,'             Type : ');
             case tobjectdeftype(b) of
               odt_class          : writeln('class');
               odt_object         : writeln('object');
               odt_interfacecom   : writeln('interfacecom');
               odt_interfacecorba : writeln('interfacecorba');
               odt_cppclass       : writeln('cppclass');
               else                 writeln('!! Warning: Invalid object type ',b);
             end;
             writeln(space,'             Size : ',getlongint);
             writeln(space,'       Vmt offset : ',getlongint);
             writeln(space,'    Name of Class : ',getstring);
             write(space,  '   Ancestor Class : ');
             readdefref;
             writeln(space,'          Options : ',getlongint);

             if tobjectdeftype(b) in [odt_interfacecom,odt_interfacecorba] then
               begin
                  writeln(space,'       GUID Valid : ',(getbyte<>0));
                  { IIDGUID }
                  for j:=1to 16 do
                   getbyte;
                  writeln(space,'       IID String : ',getstring);
                  writeln(space,'  Last VTable idx : ',getlongint);
               end;

             if tobjectdeftype(b) in [odt_class,odt_interfacecorba] then
              begin
                l:=getlongint;
                writeln(space,'  Impl Intf Count : ',l);
                for j:=1 to l do
                 begin
                   write  (space,'  - Definition : ');
                   readdefref;
                   writeln(space,'       IOffset : ',getlongint);
                 end;
              end;

           {read the record definitions and symbols}
             space:='    '+space;
             oldread_member:=read_member;
             read_member:=true;
             readdefinitions(false);
             readsymbols;
             read_member:=oldread_member;
             Delete(space,1,4);
           end;

         ibfiledef :
           begin
             ReadCommonDef('File definition');
             write  (space,'             Type : ');
             case getbyte of
              0 : writeln('Text');
              1 : begin
                    writeln('Typed');
                    write  (space,'      File of Type : ');
                    Readtype;
                  end;
              2 : writeln('Untyped');
             end;
           end;

         ibformaldef :
           readcommondef('Generic Definition (void-typ)');

         ibenumdef :
           begin
             readcommondef('Enumeration type definition');
             write(space,'Base enumeration type : ');
             readdefref;
             writeln(space,' Smallest element : ',getlongint);
             writeln(space,'  Largest element : ',getlongint);
             writeln(space,'             Size : ',getlongint);
           end;

         ibclassrefdef :
           begin
             readcommondef('Class reference definition');
             write  (space,'    Pointed Type : ');
             readtype;
           end;

         ibsetdef :
           begin
             readcommondef('Set definition');
             write  (space,'     Element type : ');
             readtype;
             b:=getbyte;
             case tsettype(b) of
               smallset : writeln(space,'  Set with 32 Elements');
               normset  : writeln(space,'  Set with 256 Elements');
               varset   : writeln(space,'  Set with ',getlongint,' Elements');
               else       writeln('!! Warning: Invalid set type ',b);
             end;
           end;


         ibvariantdef :
           begin
             readcommondef('Variant definition');
           end;

         iberror :
           begin
             Writeln('!! Error in PPU');
             exit;
           end;

         ibenddefs :
           break;

         else
           WriteLn('!! Skipping unsupported PPU Entry in definitions: ',b);
       end;
       if not EndOfEntry then
        Writeln('!! Entry has more information stored');
     until false;
     if (totaldefs<>-1) and (defcnt<>totaldefs) then
      Writeln('!! Only read ',defcnt,' of ',totaldefs,' definitions');
   end;
end;


{****************************************************************************
                           Read General Part
****************************************************************************}

procedure readinterface;
var
  b : byte;
  sourcenumber,
  unitnumber : word;
  ucrc,uintfcrc : longint;
begin
  with ppufile do
   begin
     repeat
       b:=readentry;
       case b of

         ibmodulename :
           Writeln('Module Name: ',getstring);

         ibsourcefiles :
           begin
             sourcenumber:=1;
             while not EndOfEntry do
              begin
                Writeln('Source file ',sourcenumber,' : ',getstring);
                inc(sourcenumber);
              end;
           end;

         ibusedmacros :
           begin
             while not EndOfEntry do
              begin
                Write('Conditional ',getstring);
                b:=getbyte;
                if boolean(b)=true then
                  write(' defined at startup')
                else
                  write(' not defined at startup');
                b:=getbyte;
                if boolean(b)=true then
                  writeln(' was used')
                else
                  writeln;
              end;
           end;
         ibloadunit :
           begin
             unitnumber:=1;
             while not EndOfEntry do
              begin
                write('Uses unit: ',getstring,' (Number: ',unitnumber,')');
                ucrc:=getlongint;
                uintfcrc:=getlongint;
                write(' (Crc: ',hexstr(ucrc,8),', IntfcCrc: ',hexstr(uintfcrc,8),')');
                if getbyte<>0 then
                 writeln(' (interface)')
                else
                 writeln(' (implementation)');
                inc(unitnumber);
              end;
           end;

         iblinkunitofiles :
           ReadLinkContainer('Link unit object file: ');

         iblinkunitstaticlibs :
           ReadLinkContainer('Link unit static lib: ');

         iblinkunitsharedlibs :
           ReadLinkContainer('Link unit shared lib: ');

         iblinkotherofiles :
           ReadLinkContainer('Link other object file: ');

         iblinkotherstaticlibs :
           ReadLinkContainer('Link other static lib: ');

         iblinkothersharedlibs :
           ReadLinkContainer('Link other shared lib: ');

         iberror :
           begin
             Writeln('Error in PPU');
             exit;
           end;

         ibendinterface :
           break;

         else
           WriteLn('!! Skipping unsupported PPU Entry in General Part: ',b);
       end;
     until false;
   end;
end;



{****************************************************************************
                        Read Implementation Part
****************************************************************************}

procedure readimplementation;
var
  b : byte;
begin
  with ppufile do
   begin
     repeat
       b:=readentry;
       case b of
         iberror :
           begin
             Writeln('Error in PPU');
             exit;
           end;
         ibendimplementation :
           break;
         else
           WriteLn('!! Skipping unsupported PPU Entry in Implementation: ',b);
       end;
     until false;
   end;
end;


{****************************************************************************
                            Read Browser Part
****************************************************************************}

procedure readbrowser;
var
  b : byte;
const indent : string = '';
begin
  Writeln(indent,'Start of symtable browser');
  indent:=indent+'**';
  with ppufile do
   begin
     repeat
       b:=readentry;
       case b of
         ibbeginsymtablebrowser :
           begin
             { here we must read object and record symtables !! }
             indent:=indent+'  ';
             Writeln(indent,'Record/Object symtable');
             readbrowser;
             Indent:=Copy(Indent,1,Length(Indent)-2);
           end;
         ibsymref :
           begin
             readsymref;
             readref;
           end;
         ibdefref :
           begin
             readdefref;
             readref;
             if ((ppufile.header.flags and uf_local_browser)<>0) and
                (UnitIndex=0) then
              begin
                { parast and localst }
                indent:=indent+'  ';
                b:=ppufile.readentry;
                if b=ibbeginsymtablebrowser then
                 readbrowser;
                b:=ppufile.readentry;
                if b=ibbeginsymtablebrowser then
                 readbrowser;
                Indent:=Copy(Indent,1,Length(Indent)-2);
              end;
           end;
         iberror :
           begin
             Writeln('Error in PPU');
             exit;
           end;
         ibendsymtablebrowser :
           break;
         else
           begin
             WriteLn('!! Skipping unsupported PPU Entry in Browser: ',b);
             Halt;
           end;
       end;
     until false;
   end;
  Indent:=Copy(Indent,1,Length(Indent)-2);
  Writeln(Indent,'End of symtable browser');
end;




procedure dofile (filename : string);
var
  b : byte;
begin
{ reset }
  space:='';
{ fix filename }
  if pos('.',filename)=0 then
   filename:=filename+'.ppu';
  ppufile:=tppufile.create(filename);
  if not ppufile.openfile then
   begin
     writeln ('IO-Error when opening : ',filename,', Skipping');
     exit;
   end;
{ PPU File is open, check for PPU Id }
  if not ppufile.CheckPPUID then
   begin
     writeln(Filename,' : Not a valid PPU file, Skipping');
     exit;
   end;
{ Check PPU Version }
  Writeln('Analyzing ',filename,' (v',ppufile.GetPPUVersion,')');
  if ppufile.GetPPUVersion<16 then
   begin
     writeln(Filename,' : Old PPU Formats (<v16) are not supported, Skipping');
     exit;
   end;
{ Write PPU Header Information }
  if (verbose and v_header)<>0 then
   begin
     Writeln;
     Writeln('Header');
     Writeln('-------');
     with ppufile.header do
      begin
        Writeln('Compiler version        : ',hi(ppufile.header.compiler and $ff),'.',lo(ppufile.header.compiler));
        WriteLn('Target processor        : ',Cpu2Str(cpu));
        WriteLn('Target operating system : ',Target2Str(target));
        Writeln('Unit flags              : ',PPUFlags2Str(flags));
        Writeln('FileSize (w/o header)   : ',size);
        Writeln('Checksum                : ',hexstr(checksum,8));
        Writeln('Interface Checksum      : ',hexstr(interface_checksum,8));
      end;
   end;
{read the general stuff}
  if (verbose and v_interface)<>0 then
   begin
     Writeln;
     Writeln('Interface section');
     Writeln('------------------');
     readinterface;
   end
  else
   ppufile.skipuntilentry(ibendinterface);
{read the definitions}
  if (verbose and v_defs)<>0 then
   begin
     Writeln;
     Writeln('Interface definitions');
     Writeln('----------------------');
     readdefinitions(false);
   end
  else
   ppufile.skipuntilentry(ibenddefs);
{read the symbols}
  if (verbose and v_syms)<>0 then
   begin
     Writeln;
     Writeln('Interface Symbols');
     Writeln('------------------');
     readsymbols;
   end
  else
   ppufile.skipuntilentry(ibendsyms);
{read the implementation stuff}
{ Not used at the moment (PFV)
  if (verbose and v_implementation)<>0 then
   begin
     Writeln;
     Writeln('Implementation section');
     Writeln('-----------------------');
     readimplementation;
   end
  else}
   ppufile.skipuntilentry(ibendimplementation);
{read the static browser units stuff}
  if (ppufile.header.flags and uf_local_browser)<>0 then
   begin
     if (verbose and v_defs)<>0 then
      begin
        Writeln;
        Writeln('Static definitions');
        Writeln('----------------------');
        readdefinitions(false);
      end
     else
      ppufile.skipuntilentry(ibenddefs);
   {read the symbols}
     if (verbose and v_syms)<>0 then
      begin
        Writeln;
        Writeln('Static Symbols');
        Writeln('------------------');
        readsymbols;
      end;
   end;
{read the browser units stuff}
  if (ppufile.header.flags and uf_has_browser)<>0 then
   begin
     if (verbose and v_browser)<>0 then
      begin
        Writeln;
        Writeln('Browser section');
        Writeln('---------------');
        UnitIndex:=0;
        repeat
          b:=ppufile.readentry;
          if b = ibendbrowser then break;
          if b=ibbeginsymtablebrowser then
            begin
               Writeln('Unit ',UnitIndex);
               readbrowser;
               Inc(UnitIndex);
            end
          else
            Writeln('Wrong end browser entry ',b,' should be ',ibendbrowser);
        until false;
      end;
   end;
{read the static browser units stuff}
  if (ppufile.header.flags and uf_local_browser)<>0 then
   begin
     if (verbose and v_browser)<>0 then
      begin
        Writeln;
        Writeln('Static browser section');
        Writeln('---------------');
        UnitIndex:=0;
        b:=ppufile.readentry;
        if b=ibbeginsymtablebrowser then
          readbrowser
        else
          Writeln('Wrong end browser entry ',b,' should be ',ibendbrowser);
      end;
   end;
{shutdown ppufile}
  ppufile.closefile;
  ppufile.free;
  Writeln;
end;



procedure help;
begin
  writeln('usage: ppudump [options] <filename1> <filename2>...');
  writeln;
  writeln('[options] can be:');
  writeln('    -V<verbose>  Set verbosity to <verbose>');
  writeln('                   H - Show header info');
  writeln('                   I - Show interface');
  writeln('                   M - Show implementation');
  writeln('                   S - Show interface symbols');
  writeln('                   D - Show interface definitions');
  writeln('                   B - Show browser info');
  writeln('                   A - Show all');
  writeln('    -?           This helpscreen');
  halt;
end;

var
  startpara,
  nrfile,i  : longint;
  para      : string;
begin
  writeln(Title+' '+Version);
  writeln(Copyright);
  writeln;
  if paramcount<1 then
   begin
     writeln('usage: dumpppu [options] <filename1> <filename2>...');
     halt(1);
   end;
{ turn verbose on by default }
  verbose:=v_all;
{ read options }
  startpara:=1;
  while copy(paramstr(startpara),1,1)='-' do
   begin
     para:=paramstr(startpara);
     case upcase(para[2]) of
      'V' : begin
              verbose:=0;
              for i:=3to length(para) do
               case upcase(para[i]) of
                'H' : verbose:=verbose or v_header;
                'I' : verbose:=verbose or v_interface;
                'M' : verbose:=verbose or v_implementation;
                'D' : verbose:=verbose or v_defs;
                'S' : verbose:=verbose or v_syms;
                'B' : verbose:=verbose or v_browser;
                'A' : verbose:=verbose or v_all;
               end;
            end;
      '?' : help;
     end;
     inc(startpara);
   end;
{ process files }
  for nrfile:=startpara to paramcount do
   dofile (paramstr(nrfile));
  if has_errors then
    Halt(1);
end.
{
  $Log$
  Revision 1.25  2002-05-18 13:34:27  peter
    * readded missing revisions

  Revision 1.24  2002/05/16 19:46:54  carl
  + defines.inc -> fpcdefs.inc to avoid conflicts if compiling by hand
  + try to fix temp allocation (still in ifdef)
  + generic constructor calls
  + start of tassembler / tmodulebase class cleanup

  Revision 1.22  2002/05/12 16:53:18  peter
    * moved entry and exitcode to ncgutil and cgobj
    * foreach gets extra argument for passing local data to the
      iterator function
    * -CR checks also class typecasts at runtime by changing them
      into as
    * fixed compiler to cycle with the -CR option
    * fixed stabs with elf writer, finally the global variables can
      be watched
    * removed a lot of routines from cga unit and replaced them by
      calls to cgobj
    * u32bit-s32bit updates for and,or,xor nodes. When one element is
      u32bit then the other is typecasted also to u32bit without giving
      a rangecheck warning/error.
    * fixed pascal calling method with reversing also the high tree in
      the parast, detected by tcalcst3 test

  Revision 1.21  2002/04/23 13:12:58  peter
    * updated for posinfo change
    * updated for mangledname change
    * include i386 registers, removed reference to cpubase unit that would
      make ppudump dependent on the source processor

  Revision 1.20  2002/04/15 19:15:09  carl
  + write std_reg2str instead of gas registers

  Revision 1.19  2002/04/14 17:02:19  carl
  + att_reg2str -> gas_reg2str

  Revision 1.18  2002/04/07 10:23:36  carl
  + added vm / sparc targets

  Revision 1.17  2002/04/04 19:06:14  peter
    * removed unused units
    * use tlocation.size in cg.a_*loc*() routines

  Revision 1.16  2002/04/04 18:50:27  carl
  + added wdosx support (patch from Pavel)

  Revision 1.15  2002/03/31 20:26:42  jonas
    + a_loadfpu_* and a_loadmm_* methods in tcg
    * register allocation is now handled by a class and is mostly processor
      independent (+rgobj.pas and i386/rgcpu.pas)
    * temp allocation is now handled by a class (+tgobj.pas, -i386\tgcpu.pas)
    * some small improvements and fixes to the optimizer
    * some register allocation fixes
    * some fpuvaroffset fixes in the unary minus node
    * push/popusedregisters is now called rg.save/restoreusedregisters and
      (for i386) uses temps instead of push/pop's when using -Op3 (that code is
      also better optimizable)
    * fixed and optimized register saving/restoring for new/dispose nodes
    * LOC_FPU locations now also require their "register" field to be set to
      R_ST, not R_ST0 (the latter is used for LOC_CFPUREGISTER locations only)
    - list field removed of the tnode class because it's not used currently
      and can cause hard-to-find bugs

  Revision 1.14  2002/03/28 20:48:52  carl
  - remove go32v1 support

  Revision 1.13  2002/03/28 16:44:59  armin
  + new flag if unit has local threadvars

  Revision 1.12  2002/03/01 14:08:47  peter
    * parasym added

  Revision 1.11  2002/01/06 12:08:16  peter
    * removed uauto from orddef, use new range_to_basetype generating
      the correct ordinal type for a range

}