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301 lines
13 KiB
ObjectPascal
301 lines
13 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998 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 radi386;
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interface
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uses
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tree;
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function assemble : ptree;
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implementation
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uses
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i386,hcodegen,globals,scanner,aasm,
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cobjects,symtable,types,verbose,asmutils;
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function assemble : ptree;
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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 : paasmoutput;
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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(new(pai_direct,init(strpnew(s))));
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{ if function return is param }
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{ consider it set if the offset was loaded }
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if assigned(procinfo.retdef) and
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ret_in_param(procinfo.retdef) and
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(pos(retstr,upper(s))>0) then
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procinfo.funcret_is_valid:=true;
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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.retdef) and
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(procinfo.retdef<>pdef(voiddef)) then
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retstr:=upper(tostr(procinfo.retoffset)+'('+att_reg2str[procinfo.framepointer]+')')
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else
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retstr:='';
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c:=asmgetchar;
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code:=new(paasmoutput,init);
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while not(ende) do
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begin
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case c of
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'A'..'Z','a'..'z','_' : begin
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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(byte(hs[0]));
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hs[length(hs)]:=c;
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c:=asmgetchar;
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end;
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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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Message(assem_w_using_defined_as_local);
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end;
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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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(s[length(s)]<>'$') then
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begin
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if assigned(aktprocsym^.definition^.localst) then
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sym:=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=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)^.is_valid:=1
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else
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if (pos('MOV',upper(s)) > 0) and (pvarsym(sym)^.is_valid=0) then
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Message1(sym_n_local_var_not_init_yet,hs);
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hs:='-'+tostr(pvarsym(sym)^.address)+'('+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) 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:=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^.call_offset);
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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)^.is_valid:=1;
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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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getsym(upper(hs),false);
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sym:=srsym;
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if assigned(sym) and (sym^.typ = varsym)
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or (sym^.typ = typedconstsym) then
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hs:=sym^.mangledname;
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if (sym^.typ=procsym) and (pos('CALL',upper(s))>0) then
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begin
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if assigned(pprocsym(sym)^.definition^.nextoverloaded) then
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begin
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exterror:=strpnew(' calling an overloaded procedure in asm');
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warning(user_defined);
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end;
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hs:=pprocsym(sym)^.definition^.mangledname;
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end;
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end }
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else 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.ESI_offset)+'('+att_reg2str[procinfo.framepointer]+')'
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else
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Message(assem_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.retdef) and
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(procinfo.retdef<>pdef(voiddef)) then
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begin
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hs:=retstr;
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if pos(',',s) > 0 then
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procinfo.funcret_is_valid:=true;
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end
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else
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Message(assem_w_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>2 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(assem_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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writeasmline;
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c:=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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inc(byte(s[0]));
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s[length(s)]:=c;
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c:=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:=genasmnode(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 1.1 1998-03-25 11:18:15 root
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Initial revision
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Revision 1.13 1998/03/24 21:48:33 florian
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* just a couple of fixes applied:
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- problem with fixed16 solved
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- internalerror 10005 problem fixed
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- patch for assembler reading
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- small optimizer fix
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- mem is now supported
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Revision 1.12 1998/03/10 16:27:43 pierre
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* better line info in stabs debug
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* symtabletype and lexlevel separated into two fields of tsymtable
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+ ifdef MAKELIB for direct library output, not complete
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+ ifdef CHAINPROCSYMS for overloaded seach across units, not fully
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working
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+ ifdef TESTFUNCRET for setting func result in underfunction, not
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working
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Revision 1.11 1998/03/10 01:17:26 peter
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* all files have the same header
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* messages are fully implemented, EXTDEBUG uses Comment()
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+ AG... files for the Assembler generation
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Revision 1.10 1998/03/09 12:58:12 peter
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* FWait warning is only showed for Go32V2 and $E+
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* opcode tables moved to i386.pas/m68k.pas to reduce circular uses (and
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for m68k the same tables are removed)
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+ $E for i386
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Revision 1.9 1998/03/06 00:52:51 peter
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* replaced all old messages from errore.msg, only ExtDebug and some
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Comment() calls are left
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* fixed options.pas
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Revision 1.8 1998/03/03 16:45:23 peter
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+ message support for assembler parsers
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Revision 1.7 1998/03/02 01:49:14 peter
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* renamed target_DOS to target_GO32V1
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+ new verbose system, merged old errors and verbose units into one new
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verbose.pas, so errors.pas is obsolete
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Revision 1.6 1998/02/13 10:35:35 daniel
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* Made Motorola version compilable.
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* Fixed optimizer
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Revision 1.5 1998/02/07 18:01:27 carl
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+ fwait warning for emulation
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Revision 1.3 1997/11/30 18:12:17 carl
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* bugfix of line numbering.
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Revision 1.2 1997/11/28 18:14:44 pierre
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working version with several bug fixes
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Revision 1.1.1.1 1997/11/27 08:33:00 michael
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FPC Compiler CVS start
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Pre-CVS log:
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History:
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19th october 1996:
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+ created from old asmbl.pas
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13th october 1996:
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+ renamed to radi386
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}
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