freepascal.compiler/compiler/jvm/dbgjasm.pas

{
    Copyright (c) 2003-2006 by Peter Vreman, Florian Klaempfl, and Jonas Maebe

    This units contains support for Jasmin debug info generation

    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.

 ****************************************************************************
}
unit dbgjasm;

{$i fpcdefs.inc}

interface

    uses
      cclasses,globtype,
      aasmbase,aasmtai,aasmdata,
      symbase,symconst,symtype,symdef,symsym,
      finput,
      DbgBase;

    type
      { TDebugInfoJasmin }

      TDebugInfoJasmin=class(TDebugInfo)
      protected
        fcurrprocstart,
        fcurrprocend: tasmsymbol;

        procedure appendsym_localsym(list: TAsmList; sym: tabstractnormalvarsym);

        procedure appendsym_paravar(list:TAsmList;sym:tparavarsym);override;
        procedure appendsym_localvar(list:TAsmList;sym:tlocalvarsym);override;
        procedure beforeappenddef(list:TAsmList;def:tdef);override;
        procedure appendprocdef(list:TAsmList;def:tprocdef);override;
      public
        procedure inserttypeinfo;override;
        procedure insertlineinfo(list:TAsmList);override;
      end;

implementation

    uses
      sysutils,cutils,cfileutl,constexp,
      version,globals,verbose,systems,
      cpubase,cpuinfo,cgbase,paramgr,
      fmodule,
      defutil,symtable,ppu
      ;

{****************************************************************************
                              TDebugInfoJasmin
****************************************************************************}

  procedure TDebugInfoJasmin.appendsym_localsym(list: TAsmList; sym: tabstractnormalvarsym);
    var
      jvar: tai_jvar;
      proc: tprocdef;
    begin
      if tdef(sym.owner.defowner).typ<>procdef then
        exit;
      if not(sym.localloc.loc in [LOC_REFERENCE,LOC_CREFERENCE]) then
        exit;
      proc:=tprocdef(sym.owner.defowner);
      jvar:=tai_jvar.create(sym.localloc.reference.offset,sym.jvmmangledbasename,fcurrprocstart,fcurrprocend);
      proc.exprasmlist.InsertAfter(jvar,proc.procstarttai);
    end;


  procedure TDebugInfoJasmin.appendsym_paravar(list: TAsmList; sym: tparavarsym);
    begin
      appendsym_localsym(list,sym);
    end;


  procedure TDebugInfoJasmin.appendsym_localvar(list: TAsmList; sym: tlocalvarsym);
    begin
      appendsym_localsym(list,sym);
    end;


  procedure TDebugInfoJasmin.beforeappenddef(list: TAsmList; def: tdef);
    begin
    end;


  procedure TDebugInfoJasmin.appendprocdef(list: TAsmList; def: tprocdef);
    var
      procstartlabel,
      procendlabel    : tasmlabel;
    begin
      { insert debug information for local variables and parameters, but only
        for routines implemented in the Pascal code }
      if not assigned(def.procstarttai) then
        exit;

      current_asmdata.getlabel(procstartlabel,alt_dbgtype);
      current_asmdata.getlabel(procendlabel,alt_dbgtype);
      def.exprasmlist.insertafter(tai_label.create(procstartlabel),def.procstarttai);
      def.exprasmlist.insertbefore(tai_label.create(procendlabel),def.procendtai);

      fcurrprocstart:=procstartlabel;
      fcurrprocend:=procendlabel;

      write_symtable_parasyms(list,def.paras);
      write_symtable_syms(list,def.localst);
    end;


  procedure TDebugInfoJasmin.inserttypeinfo;
    begin
      { write all procedures and methods }
      if assigned(current_module.globalsymtable) then
        write_symtable_procdefs(nil,current_module.globalsymtable);
      if assigned(current_module.localsymtable) then
        write_symtable_procdefs(nil,current_module.localsymtable);
    end;

  procedure TDebugInfoJasmin.insertlineinfo(list: TAsmList);
    begin
    end;


{****************************************************************************
****************************************************************************}
    const
      dbg_jasmin_info : tdbginfo =
         (
           id     : dbg_jasmin;
           idtxt  : 'JASMIN';
         );


initialization
  RegisterDebugInfo(dbg_jasmin_info,TDebugInfoJasmin);

end.