mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-18 06:59:54 +02:00
421 lines
12 KiB
ObjectPascal
421 lines
12 KiB
ObjectPascal
{
|
|
$Id$
|
|
Copyright (c) 1998-2002 by Florian Klaempfl, Pierre Muller
|
|
|
|
Implementation of the reading of PPU Files for the symtable
|
|
|
|
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 symppu;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
globtype,globals,
|
|
symbase,symtype,
|
|
ppu;
|
|
|
|
type
|
|
tcompilerppufile=class(tppufile)
|
|
procedure checkerror;
|
|
procedure getguid(var g: tguid);
|
|
procedure getposinfo(var p:tfileposinfo);
|
|
function getderef : pointer;
|
|
function getsymlist:tsymlist;
|
|
procedure gettype(var t:ttype);
|
|
procedure putguid(const g: tguid);
|
|
procedure putposinfo(const p:tfileposinfo);
|
|
procedure putderef(p : tsymtableentry);
|
|
procedure putsymlist(p:tsymlist);
|
|
procedure puttype(const t:ttype);
|
|
end;
|
|
|
|
|
|
implementation
|
|
|
|
uses
|
|
symconst,
|
|
verbose;
|
|
|
|
{*****************************************************************************
|
|
TCompilerPPUFile
|
|
*****************************************************************************}
|
|
|
|
procedure tcompilerppufile.checkerror;
|
|
begin
|
|
if error then
|
|
Message(unit_f_ppu_read_error);
|
|
end;
|
|
|
|
|
|
procedure tcompilerppufile.getguid(var g: tguid);
|
|
begin
|
|
getdata(g,sizeof(g));
|
|
end;
|
|
|
|
|
|
procedure tcompilerppufile.getposinfo(var p:tfileposinfo);
|
|
var
|
|
info : byte;
|
|
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 : p.fileindex:=getbyte;
|
|
1 : p.fileindex:=getword;
|
|
2 : p.fileindex:=(getbyte shl 16) or getword;
|
|
3 : p.fileindex:=getlongint;
|
|
end;
|
|
case ((info shr 2) and $03) of
|
|
0 : p.line:=getbyte;
|
|
1 : p.line:=getword;
|
|
2 : p.line:=(getbyte shl 16) or getword;
|
|
3 : p.line:=getlongint;
|
|
end;
|
|
case ((info shr 4) and $03) of
|
|
0 : p.column:=getbyte;
|
|
1 : p.column:=getword;
|
|
2 : p.column:=(getbyte shl 16) or getword;
|
|
3 : p.column:=getlongint;
|
|
end;
|
|
end;
|
|
|
|
|
|
function tcompilerppufile.getderef : pointer;
|
|
var
|
|
hp,p : tderef;
|
|
b : tdereftype;
|
|
begin
|
|
p:=nil;
|
|
repeat
|
|
hp:=p;
|
|
b:=tdereftype(getbyte);
|
|
case b of
|
|
derefnil :
|
|
break;
|
|
derefunit,
|
|
derefaktrecordindex,
|
|
derefaktlocal,
|
|
derefaktstaticindex :
|
|
begin
|
|
p:=tderef.create(b,getword);
|
|
p.next:=hp;
|
|
break;
|
|
end;
|
|
derefindex,
|
|
dereflocal,
|
|
derefpara,
|
|
derefrecord :
|
|
begin
|
|
p:=tderef.create(b,getword);
|
|
p.next:=hp;
|
|
end;
|
|
end;
|
|
until false;
|
|
getderef:=p;
|
|
end;
|
|
|
|
|
|
function tcompilerppufile.getsymlist:tsymlist;
|
|
var
|
|
sym : tsym;
|
|
slt : tsltype;
|
|
idx : longint;
|
|
p : tsymlist;
|
|
begin
|
|
p:=tsymlist.create;
|
|
p.def:=tdef(getderef);
|
|
repeat
|
|
slt:=tsltype(getbyte);
|
|
case slt of
|
|
sl_none :
|
|
break;
|
|
sl_call,
|
|
sl_load,
|
|
sl_subscript :
|
|
begin
|
|
sym:=tsym(getderef);
|
|
p.addsym(slt,sym);
|
|
end;
|
|
sl_vec :
|
|
begin
|
|
idx:=getlongint;
|
|
p.addconst(slt,idx);
|
|
end;
|
|
else
|
|
internalerror(200110204);
|
|
end;
|
|
until false;
|
|
getsymlist:=tsymlist(p);
|
|
end;
|
|
|
|
|
|
procedure tcompilerppufile.gettype(var t:ttype);
|
|
begin
|
|
t.def:=tdef(getderef);
|
|
t.sym:=tsym(getderef);
|
|
end;
|
|
|
|
|
|
procedure tcompilerppufile.putposinfo(const p:tfileposinfo);
|
|
var
|
|
oldcrc : boolean;
|
|
info : byte;
|
|
begin
|
|
{ posinfo is not relevant for changes in PPU }
|
|
oldcrc:=do_crc;
|
|
do_crc:=false;
|
|
{
|
|
info byte layout in bits:
|
|
0-1 - amount of bytes for fileindex
|
|
2-3 - amount of bytes for line
|
|
4-5 - amount of bytes for column
|
|
}
|
|
info:=0;
|
|
{ calculate info byte }
|
|
if (p.fileindex>$ff) then
|
|
begin
|
|
if (p.fileindex<=$ffff) then
|
|
info:=info or $1
|
|
else
|
|
if (p.fileindex<=$ffffff) then
|
|
info:=info or $2
|
|
else
|
|
info:=info or $3;
|
|
end;
|
|
if (p.line>$ff) then
|
|
begin
|
|
if (p.line<=$ffff) then
|
|
info:=info or $4
|
|
else
|
|
if (p.line<=$ffffff) then
|
|
info:=info or $8
|
|
else
|
|
info:=info or $c;
|
|
end;
|
|
if (p.column>$ff) then
|
|
begin
|
|
if (p.column<=$ffff) then
|
|
info:=info or $10
|
|
else
|
|
if (p.column<=$ffffff) then
|
|
info:=info or $20
|
|
else
|
|
info:=info or $30;
|
|
end;
|
|
{ write data }
|
|
putbyte(info);
|
|
case (info and $03) of
|
|
0 : putbyte(p.fileindex);
|
|
1 : putword(p.fileindex);
|
|
2 : begin
|
|
putbyte(p.fileindex shr 16);
|
|
putword(p.fileindex and $ffff);
|
|
end;
|
|
3 : putlongint(p.fileindex);
|
|
end;
|
|
case ((info shr 2) and $03) of
|
|
0 : putbyte(p.line);
|
|
1 : putword(p.line);
|
|
2 : begin
|
|
putbyte(p.line shr 16);
|
|
putword(p.line and $ffff);
|
|
end;
|
|
3 : putlongint(p.line);
|
|
end;
|
|
case ((info shr 4) and $03) of
|
|
0 : putbyte(p.column);
|
|
1 : putword(p.column);
|
|
2 : begin
|
|
putbyte(p.column shr 16);
|
|
putword(p.column and $ffff);
|
|
end;
|
|
3 : putlongint(p.column);
|
|
end;
|
|
do_crc:=oldcrc;
|
|
end;
|
|
|
|
|
|
procedure tcompilerppufile.putguid(const g: tguid);
|
|
begin
|
|
putdata(g,sizeof(g));
|
|
end;
|
|
|
|
|
|
procedure tcompilerppufile.putderef(p : tsymtableentry);
|
|
begin
|
|
if p=nil then
|
|
putbyte(ord(derefnil))
|
|
else
|
|
begin
|
|
{ Static symtable ? }
|
|
if p.owner.symtabletype=staticsymtable then
|
|
begin
|
|
putbyte(ord(derefaktstaticindex));
|
|
putword(p.indexnr);
|
|
end
|
|
{ Local record/object symtable ? }
|
|
else if (p.owner=aktrecordsymtable) then
|
|
begin
|
|
putbyte(ord(derefaktrecordindex));
|
|
putword(p.indexnr);
|
|
end
|
|
{ Local local/para symtable ? }
|
|
else if (p.owner=aktlocalsymtable) then
|
|
begin
|
|
putbyte(ord(derefaktlocal));
|
|
putword(p.indexnr);
|
|
end
|
|
else
|
|
begin
|
|
putbyte(ord(derefindex));
|
|
putword(p.indexnr);
|
|
{ Current unit symtable ? }
|
|
repeat
|
|
if not assigned(p) then
|
|
internalerror(556655);
|
|
case p.owner.symtabletype of
|
|
{ when writing the pseudo PPU file
|
|
to get CRC values the globalsymtable is not yet
|
|
a unitsymtable PM }
|
|
globalsymtable :
|
|
begin
|
|
{ check if the unit is available in the uses
|
|
clause, else it's an error }
|
|
if p.owner.unitid=$ffff then
|
|
internalerror(55665566);
|
|
putbyte(ord(derefunit));
|
|
putword(p.owner.unitid);
|
|
break;
|
|
end;
|
|
staticsymtable :
|
|
begin
|
|
putbyte(ord(derefaktstaticindex));
|
|
putword(p.indexnr);
|
|
break;
|
|
end;
|
|
localsymtable :
|
|
begin
|
|
p:=p.owner.defowner;
|
|
putbyte(ord(dereflocal));
|
|
putword(p.indexnr);
|
|
end;
|
|
parasymtable :
|
|
begin
|
|
p:=p.owner.defowner;
|
|
putbyte(ord(derefpara));
|
|
putword(p.indexnr);
|
|
end;
|
|
objectsymtable,
|
|
recordsymtable :
|
|
begin
|
|
p:=p.owner.defowner;
|
|
putbyte(ord(derefrecord));
|
|
putword(p.indexnr);
|
|
end;
|
|
else
|
|
internalerror(556656);
|
|
end;
|
|
until false;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcompilerppufile.putsymlist(p:tsymlist);
|
|
var
|
|
hp : psymlistitem;
|
|
begin
|
|
putderef(p.def);
|
|
hp:=p.firstsym;
|
|
while assigned(hp) do
|
|
begin
|
|
putbyte(byte(hp^.sltype));
|
|
case hp^.sltype of
|
|
sl_call,
|
|
sl_load,
|
|
sl_subscript :
|
|
putderef(hp^.sym);
|
|
sl_vec :
|
|
putlongint(hp^.value);
|
|
else
|
|
internalerror(200110205);
|
|
end;
|
|
hp:=hp^.next;
|
|
end;
|
|
putbyte(byte(sl_none));
|
|
end;
|
|
|
|
|
|
procedure tcompilerppufile.puttype(const t:ttype);
|
|
begin
|
|
{ Don't write symbol references for the current unit
|
|
and for the system unit }
|
|
if assigned(t.sym) and
|
|
(t.sym.owner.unitid<>0) and
|
|
(t.sym.owner.unitid<>1) then
|
|
begin
|
|
putderef(nil);
|
|
putderef(t.sym);
|
|
end
|
|
else
|
|
begin
|
|
putderef(t.def);
|
|
putderef(nil);
|
|
end;
|
|
end;
|
|
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.12 2002-05-18 13:34:18 peter
|
|
* readded missing revisions
|
|
|
|
Revision 1.11 2002/05/16 19:46:45 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 1.9 2002/05/12 16:53:15 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 1.8 2002/04/19 15:40:40 peter
|
|
* optimize tfileposinfo writing, this reduces the ppu size with 20%
|
|
|
|
}
|