mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-05-01 22:53:42 +02:00
6f3e16298a
- removed tprocinfo.return_offset, never use it again since it's invalid
if the result is a regvar
495 lines
22 KiB
ObjectPascal
495 lines
22 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2002 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 radirect;
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{$i fpcdefs.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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aasmbase,aasmtai,aasmcpu,
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{ symtable }
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symconst,symbase,symtype,symsym,symtable,defutil,paramgr,
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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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rax86,
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{ codegen }
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cgbase,
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{ constants }
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itx86att,
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cpubase
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;
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function assemble : tnode;
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var
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uhs,
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retstr,s,hs : string;
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c : char;
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ende : boolean;
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srsym,sym : tsym;
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srsymtable : tsymtable;
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code : TAAsmoutput;
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framereg : tregister;
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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(current_procdef.funcretsym) and
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(pos(retstr,upper(s))>0) then
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tvarsym(current_procdef.funcretsym).varstate:=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(current_procdef.funcretsym) and
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is_fpu(current_procdef.rettype.def) then
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tvarsym(current_procdef.funcretsym).varstate:=vs_assigned;
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framereg:=current_procinfo.framepointer;
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convert_register_to_enum(framereg);
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if (not is_void(current_procdef.rettype.def)) then
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retstr:=upper(tostr(tvarsym(current_procdef.funcretsym).adjusted_address)+'('+gas_reg2str[framereg.enum]+')')
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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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searchsym(upper(hs),srsym,srsymtable);
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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:=tlabelsym(srsym).lab.name;
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tlabelsym(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(current_procdef) 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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(not paramanager.ret_in_param(current_procdef.rettype.def,current_procdef.proccalloption)) 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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tvarsym(current_procdef.funcretsym).varstate:=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)]<>'.') 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(current_procdef.localst) and
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(current_procdef.localst.symtablelevel>=normal_function_level) then
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sym:=tsym(current_procdef.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:=tlabelsym(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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tvarsym(sym).varstate:=vs_used
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else
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if (pos('MOV',upper(s)) > 0) and (tvarsym(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 tvarsym(sym).varoptions) then
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hs:=tvarsym(sym).mangledname
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else
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hs:='-'+tostr(tvarsym(sym).address)+
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'('+gas_reg2str[framereg.enum]+')';
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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:=tprocsym(sym).first_procdef.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(current_procdef.parast) then
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sym:=tsym(current_procdef.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:=tvarsym(sym).address;
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{ set offset }
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inc(l,current_procdef.parast.address_fixup);
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hs:=tostr(l)+'('+gas_reg2str[framereg.enum]+')';
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if pos(',',s) > 0 then
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tvarsym(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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uhs:=upper(hs);
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if (uhs='__SELF') then
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begin
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if assigned(current_procdef._class) then
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uhs:='self'
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else
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begin
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Message(asmr_e_cannot_use_SELF_outside_a_method);
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uhs:='';
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end;
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end
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else
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if (uhs='__OLDEBP') then
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begin
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if current_procdef.parast.symtablelevel>normal_function_level then
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uhs:='parentframe'
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else
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begin
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Message(asmr_e_cannot_use_OLDEBP_outside_nested_procedure);
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uhs:='';
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end;
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end
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else
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if uhs='__RESULT' then
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begin
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if (not is_void(current_procdef.rettype.def)) then
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uhs:='result'
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else
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begin
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Message(asmr_e_void_function);
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uhs:='';
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end;
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end;
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if uhs<>'' then
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searchsym(uhs,sym,srsymtable)
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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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case sym.owner.symtabletype of
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globalsymtable,
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staticsymtable :
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begin
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case sym.typ of
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varsym :
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begin
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Message2(asmr_h_direct_global_to_mangled,hs,tvarsym(sym).mangledname);
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hs:=tvarsym(sym).mangledname;
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inc(tvarsym(sym).refs);
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end;
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typedconstsym :
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begin
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Message2(asmr_h_direct_global_to_mangled,hs,ttypedconstsym(sym).mangledname);
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hs:=ttypedconstsym(sym).mangledname;
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end;
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procsym :
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begin
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{ procs can be called or the address can be loaded }
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if ((pos('CALL',upper(s))>0) or (pos('LEA',upper(s))>0)) then
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begin
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if tprocsym(sym).procdef_count>1 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,tprocsym(sym).first_procdef.mangledname);
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hs:=tprocsym(sym).first_procdef.mangledname;
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end;
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end;
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else
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Message(asmr_e_wrong_sym_type);
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end;
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end;
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parasymtable,
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localsymtable :
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begin
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case sym.typ of
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varsym :
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begin
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hs:=tostr(tvarsym(sym).adjusted_address)+
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'('+gas_reg2str[framereg.enum]+')';
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inc(tvarsym(sym).refs);
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end;
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typedconstsym :
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begin
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Message2(asmr_h_direct_global_to_mangled,hs,ttypedconstsym(sym).mangledname);
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hs:=ttypedconstsym(sym).mangledname;
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end;
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else
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Message(asmr_e_wrong_sym_type);
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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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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 :
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begin
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if pos(retstr,s) > 0 then
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tvarsym(current_procdef.funcretsym).varstate:=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 :
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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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{*****************************************************************************
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Initialize
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*****************************************************************************}
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const
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{$ifdef x86_64}
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asmmode_x86_64_direct_info : tasmmodeinfo =
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(
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id : asmmode_direct;
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idtxt : 'DIRECT'
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);
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{$else x86_64}
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asmmode_i386_direct_info : tasmmodeinfo =
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(
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id : asmmode_direct;
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idtxt : 'DIRECT'
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);
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{$endif x86_64}
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initialization
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{$ifdef x86_64}
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RegisterAsmMode(asmmode_x86_64_direct_info);
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{$else x86_64}
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RegisterAsmMode(asmmode_i386_direct_info);
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{$endif x86_64}
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end.
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{
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$Log$
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Revision 1.6 2003-06-02 21:42:05 jonas
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* function results can now also be regvars
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- removed tprocinfo.return_offset, never use it again since it's invalid
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if the result is a regvar
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Revision 1.5 2003/05/22 21:33:31 peter
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* removed some unit dependencies
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Revision 1.4 2003/05/15 18:58:54 peter
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* removed selfpointer_offset, vmtpointer_offset
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* tvarsym.adjusted_address
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* address in localsymtable is now in the real direction
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* removed some obsolete globals
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Revision 1.3 2003/05/13 19:15:28 peter
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* removed radirect
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Revision 1.2 2003/05/01 07:59:43 florian
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* introduced defaultordconsttype to decribe the default size of ordinal constants
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on 64 bit CPUs it's equal to cs64bitdef while on 32 bit CPUs it's equal to s32bitdef
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+ added defines CPU32 and CPU64 for 32 bit and 64 bit CPUs
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* int64s/qwords are allowed as for loop counter on 64 bit CPUs
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Revision 1.1 2003/04/30 15:45:35 florian
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* merged more x86-64/i386 code
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Revision 1.11 2003/04/27 11:21:36 peter
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* aktprocdef renamed to current_procdef
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* procinfo renamed to current_procinfo
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* procinfo will now be stored in current_module so it can be
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cleaned up properly
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* gen_main_procsym changed to create_main_proc and release_main_proc
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to also generate a tprocinfo structure
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* fixed unit implicit initfinal
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Revision 1.10 2003/04/27 07:29:52 peter
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* current_procdef cleanup, current_procdef is now always nil when parsing
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a new procdef declaration
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* aktprocsym removed
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* lexlevel removed, use symtable.symtablelevel instead
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* implicit init/final code uses the normal genentry/genexit
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* funcret state checking updated for new funcret handling
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Revision 1.9 2003/04/25 20:59:35 peter
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* removed funcretn,funcretsym, function result is now in varsym
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and aliases for result and function name are added using absolutesym
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* vs_hidden parameter for funcret passed in parameter
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* vs_hidden fixes
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* writenode changed to printnode and released from extdebug
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* -vp option added to generate a tree.log with the nodetree
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* nicer printnode for statements, callnode
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Revision 1.8 2003/04/25 12:04:31 florian
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* merged agx64att and ag386att to x86/agx86att
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Revision 1.7 2003/04/21 20:05:10 peter
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* removed some ie checks
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Revision 1.6 2003/01/08 18:43:57 daniel
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* Tregister changed into a record
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Revision 1.5 2002/11/25 17:43:27 peter
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* splitted defbase in defutil,symutil,defcmp
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* merged isconvertable and is_equal into compare_defs(_ext)
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* made operator search faster by walking the list only once
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Revision 1.4 2002/11/18 17:32:00 peter
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* pass proccalloption to ret_in_xxx and push_xxx functions
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Revision 1.3 2002/09/03 16:26:28 daniel
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* Make Tprocdef.defs protected
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Revision 1.2 2002/08/17 09:23:47 florian
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* first part of procinfo rewrite
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Revision 1.1 2002/08/10 14:47:50 carl
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+ moved target_cpu_string to cpuinfo
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* renamed asmmode enum.
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* assembler reader has now less ifdef's
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* move from nppcmem.pas -> ncgmem.pas vec. node.
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Revision 1.21 2002/07/20 11:58:05 florian
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* types.pas renamed to defbase.pas because D6 contains a types
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unit so this would conflicts if D6 programms are compiled
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+ Willamette/SSE2 instructions to assembler added
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Revision 1.20 2002/07/11 14:41:34 florian
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* start of the new generic parameter handling
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Revision 1.19 2002/07/01 18:46:34 peter
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* internal linker
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* reorganized aasm layer
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Revision 1.18 2002/05/18 13:34:26 peter
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* readded missing revisions
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Revision 1.17 2002/05/16 19:46:52 carl
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+ defines.inc -> fpcdefs.inc to avoid conflicts if compiling by hand
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+ try to fix temp allocation (still in ifdef)
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+ generic constructor calls
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+ start of tassembler / tmodulebase class cleanup
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Revision 1.15 2002/05/12 16:53:18 peter
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* moved entry and exitcode to ncgutil and cgobj
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* foreach gets extra argument for passing local data to the
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iterator function
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* -CR checks also class typecasts at runtime by changing them
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into as
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* fixed compiler to cycle with the -CR option
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* fixed stabs with elf writer, finally the global variables can
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be watched
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* removed a lot of routines from cga unit and replaced them by
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calls to cgobj
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* u32bit-s32bit updates for and,or,xor nodes. When one element is
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u32bit then the other is typecasted also to u32bit without giving
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a rangecheck warning/error.
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* fixed pascal calling method with reversing also the high tree in
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the parast, detected by tcalcst3 test
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Revision 1.14 2002/04/15 19:12:09 carl
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+ target_info.size_of_pointer -> pointer_size
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+ some cleanup of unused types/variables
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* move several constants from cpubase to their specific units
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(where they are used)
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+ att_Reg2str -> gas_reg2str
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+ int_reg2str -> std_reg2str
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Revision 1.13 2002/04/14 17:01:52 carl
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+ att_reg2str -> gas_reg2str
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}
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