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319 lines
14 KiB
ObjectPascal
319 lines
14 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2000 by Florian Klaempfl
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Reads inline assembler and writes the lines direct to the output
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit Ra386dir;
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{$i defines.inc}
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interface
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uses
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node;
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function assemble : tnode;
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implementation
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uses
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{ common }
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cutils,
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{ global }
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globals,verbose,
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systems,
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{ aasm }
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cpubase,aasm,
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{ symtable }
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symconst,symtype,symdef,symsym,symtable,types,
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{ pass 1 }
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nbas,
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{ parser }
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scanner,
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ra386,
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{ codegen }
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{$ifdef newcg}
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cgbase
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{$else}
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hcodegen
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{$endif}
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;
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function assemble : tnode;
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var
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retstr,s,hs : string;
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c : char;
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ende : boolean;
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sym : psym;
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code : TAAsmoutput;
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i,l : longint;
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procedure writeasmline;
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var
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i : longint;
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begin
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i:=length(s);
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while (i>0) and (s[i] in [' ',#9]) do
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dec(i);
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s[0]:=chr(i);
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if s<>'' then
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code.concat(Tai_direct.Create(strpnew(s)));
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{ consider it set function set if the offset was loaded }
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if assigned(procinfo^.returntype.def) and
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(pos(retstr,upper(s))>0) then
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procinfo^.funcret_state:=vs_assigned;
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s:='';
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end;
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begin
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ende:=false;
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s:='';
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if assigned(procinfo^.returntype.def) and
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is_fpu(procinfo^.returntype.def) then
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procinfo^.funcret_state:=vs_assigned;
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if assigned(procinfo^.returntype.def) and
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(procinfo^.returntype.def<>pdef(voiddef)) then
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retstr:=upper(tostr(procinfo^.return_offset)+'('+att_reg2str[procinfo^.framepointer]+')')
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else
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retstr:='';
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c:=current_scanner^.asmgetchar;
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code:=TAAsmoutput.Create;
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while not(ende) do
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begin
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{ wrong placement
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current_scanner^.gettokenpos; }
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case c of
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'A'..'Z','a'..'z','_' : begin
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current_scanner^.gettokenpos;
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i:=0;
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hs:='';
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while ((ord(c)>=ord('A')) and (ord(c)<=ord('Z')))
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or ((ord(c)>=ord('a')) and (ord(c)<=ord('z')))
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or ((ord(c)>=ord('0')) and (ord(c)<=ord('9')))
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or (c='_') do
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begin
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inc(i);
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hs[i]:=c;
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c:=current_scanner^.asmgetchar;
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end;
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hs[0]:=chr(i);
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if upper(hs)='END' then
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ende:=true
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else
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begin
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if c=':' then
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begin
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getsym(upper(hs),false);
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if srsym<>nil then
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if (srsym^.typ = labelsym) then
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Begin
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hs:=plabelsym(srsym)^.lab^.name;
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plabelsym(srsym)^.lab^.is_set:=true;
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end
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else
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Message(asmr_w_using_defined_as_local);
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end
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else if upper(hs)='FWAIT' then
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FwaitWarning
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else
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{ access to local variables }
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if assigned(aktprocsym) then
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begin
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{ is the last written character an special }
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{ char ? }
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if (s[length(s)]='%') and
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ret_in_acc(procinfo^.returntype.def) and
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((pos('AX',upper(hs))>0) or
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(pos('AL',upper(hs))>0)) then
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procinfo^.funcret_state:=vs_assigned;
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if (s[length(s)]<>'%') and
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(s[length(s)]<>'$') and
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((s[length(s)]<>'0') or (hs[1]<>'x')) then
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begin
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if assigned(aktprocsym^.definition^.localst) and
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(lexlevel >= normal_function_level) then
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sym:=psym(aktprocsym^.definition^.localst^.search(upper(hs)))
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else
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sym:=nil;
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if assigned(sym) then
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begin
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if (sym^.typ = labelsym) then
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Begin
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hs:=plabelsym(sym)^.lab^.name;
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end
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else if sym^.typ=varsym then
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begin
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{variables set are after a comma }
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{like in movl %eax,I }
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if pos(',',s) > 0 then
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pvarsym(sym)^.varstate:=vs_used
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else
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if (pos('MOV',upper(s)) > 0) and (pvarsym(sym)^.varstate=vs_declared) then
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Message1(sym_n_uninitialized_local_variable,hs);
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if (vo_is_external in pvarsym(sym)^.varoptions) then
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hs:=pvarsym(sym)^.mangledname
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else
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hs:='-'+tostr(pvarsym(sym)^.address)+
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'('+att_reg2str[procinfo^.framepointer]+')';
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end
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else
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{ call to local function }
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if (sym^.typ=procsym) and ((pos('CALL',upper(s))>0) or
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(pos('LEA',upper(s))>0)) then
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begin
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hs:=pprocsym(sym)^.definition^.mangledname;
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end;
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end
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else
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begin
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if assigned(aktprocsym^.definition^.parast) then
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sym:=psym(aktprocsym^.definition^.parast^.search(upper(hs)))
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else
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sym:=nil;
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if assigned(sym) then
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begin
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if sym^.typ=varsym then
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begin
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l:=pvarsym(sym)^.address;
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{ set offset }
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inc(l,aktprocsym^.definition^.parast^.address_fixup);
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hs:=tostr(l)+'('+att_reg2str[procinfo^.framepointer]+')';
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if pos(',',s) > 0 then
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pvarsym(sym)^.varstate:=vs_used;
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end;
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end
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{ I added that but it creates a problem in line.ppi
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because there is a local label wbuffer and
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a static variable WBUFFER ...
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what would you decide, florian ?}
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else
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begin
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{$ifndef IGNOREGLOBALVAR}
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getsym(upper(hs),false);
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sym:=srsym;
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if assigned(sym) and (sym^.owner^.symtabletype in [unitsymtable,
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globalsymtable,staticsymtable]) then
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begin
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if (sym^.typ = varsym) or (sym^.typ = typedconstsym) then
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begin
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Message2(asmr_h_direct_global_to_mangled,hs,sym^.mangledname);
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hs:=sym^.mangledname;
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if sym^.typ=varsym then
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inc(pvarsym(sym)^.refs);
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end;
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{ procs can be called or the address can be loaded }
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if (sym^.typ=procsym) and
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((pos('CALL',upper(s))>0) or (pos('LEA',upper(s))>0)) then
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begin
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if assigned(pprocsym(sym)^.definition^.nextoverloaded) then
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Message1(asmr_w_direct_global_is_overloaded_func,hs);
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Message2(asmr_h_direct_global_to_mangled,hs,sym^.mangledname);
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hs:=sym^.mangledname;
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end;
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end
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else
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{$endif TESTGLOBALVAR}
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if upper(hs)='__SELF' then
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begin
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if assigned(procinfo^._class) then
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hs:=tostr(procinfo^.selfpointer_offset)+
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'('+att_reg2str[procinfo^.framepointer]+')'
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else
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Message(asmr_e_cannot_use_SELF_outside_a_method);
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end
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else if upper(hs)='__RESULT' then
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begin
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if assigned(procinfo^.returntype.def) and
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(procinfo^.returntype.def<>pdef(voiddef)) then
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hs:=retstr
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else
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Message(asmr_e_void_function);
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end
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else if upper(hs)='__OLDEBP' then
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begin
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{ complicate to check there }
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{ we do it: }
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if lexlevel>normal_function_level then
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hs:=tostr(procinfo^.framepointer_offset)+
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'('+att_reg2str[procinfo^.framepointer]+')'
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else
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Message(asmr_e_cannot_use_OLDEBP_outside_nested_procedure);
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end;
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end;
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end;
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end;
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end;
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s:=s+hs;
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end;
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end;
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'{',';',#10,#13 : begin
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if pos(retstr,s) > 0 then
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procinfo^.funcret_state:=vs_assigned;
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writeasmline;
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c:=current_scanner^.asmgetchar;
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end;
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#26 : Message(scan_f_end_of_file);
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else
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begin
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current_scanner^.gettokenpos;
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inc(byte(s[0]));
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s[length(s)]:=c;
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c:=current_scanner^.asmgetchar;
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end;
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end;
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end;
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writeasmline;
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assemble:=casmnode.create(code);
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end;
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end.
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{
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$Log$
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Revision 1.4 2000-12-25 00:07:34 peter
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+ new tlinkedlist class (merge of old tstringqueue,tcontainer and
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tlinkedlist objects)
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Revision 1.3 2000/11/29 00:30:50 florian
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* unused units removed from uses clause
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* some changes for widestrings
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Revision 1.2 2000/10/31 22:02:57 peter
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* symtable splitted, no real code changes
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Revision 1.1 2000/10/15 09:47:43 peter
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* moved to i386/
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Revision 1.5 2000/10/14 10:14:52 peter
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* moehrendorf oct 2000 rewrite
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Revision 1.4 2000/09/24 15:06:26 peter
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* use defines.inc
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Revision 1.3 2000/08/27 16:11:52 peter
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* moved some util functions from globals,cobjects to cutils
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* splitted files into finput,fmodule
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Revision 1.2 2000/07/13 11:32:48 michael
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+ removed logs
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}
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