+ readed because previous version was broken

compiler/powerpc/agppcmpw.pas

@@ -0,0 +1,923 @@
+{
+    $Id$
+    Copyright (c) 2002 by Florian Klaempfl
+
+    This unit implements an asmoutput class for PowerPC with MPW syntax
+
+    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.
+
+ ****************************************************************************
+}
+{
+  This unit implements an asmoutput class for PowerPC with MPW syntax
+}
+unit agppcmpw;
+
+{$i fpcdefs.inc}
+
+interface
+
+    uses
+       aasmbase,aasmtai,aasmcpu,assemble,
+       cpubase;
+
+    const
+      mpw_reg2str : treg2strtable = ('',
+        'r0','r1','r2','r3','r4','r5','r6','r7','r8','r9','r10','r11','r12','r13','r14','r15','r16',
+        'r17','r18','r19','r20','r21','r22','r23','r24','r25','r26','r27','r28','r29','r30','r31',
+        'f0','f1','f2','f3','f4','f5','f6','f7', 'f8','f9','f10','f11','f12',
+        'f13','f14','f15','f16','f17', 'f18','f19','f20','f21','f22', 'f23','f24',
+        'f25','f26','f27','f28','f29','f30','f31',
+        'v0','v1','v2','v3','v4','v5','v6','v7','v8','v9','v10','v11','v12',
+        'v13','v14','v15','v16','v17','v18','v19','v20','v21','v22', 'v23','v24',
+        'v25','v26','v27','v28','v29','v30','v31',
+        'cR','cr0','cr1','cr2','cr3','cr4','cr5','cr6','cr7',
+        'xer','lr','ctr','fpscr'
+      );
+    type
+      TPPCMPWAssembler = class(TExternalAssembler)
+        procedure WriteTree(p:TAAsmoutput);override;
+        procedure WriteAsmList;override;
+        Function  DoAssemble:boolean;override;
+        procedure WriteExternals;
+        procedure WriteAsmFileHeader;
+      end;
+
+
+  implementation
+
+    uses
+{$ifdef delphi}
+      sysutils,
+{$endif}
+      cutils,globtype,globals,systems,cclasses,
+      verbose,finput,fmodule,script,cpuinfo
+      ;
+
+    const
+      line_length = 70;
+
+
+
+    function ReplaceForbiddenChars(var s: string):Boolean;
+         {Returns wheater a replacement has occured.}
+
+        var
+          i:Integer;
+
+        {The dollar sign is not allowed in MPW PPCAsm}
+
+    begin
+      ReplaceForbiddenChars:=false;
+      for i:=1 to Length(s) do
+        if s[i]='$' then
+          begin
+            s[i]:='s';
+            ReplaceForbiddenChars:=true;
+          end;
+    end;
+
+    const
+
+{*** From here is copyed from agppcgas.pp, except where marked with CHANGED.
+     Perhaps put in a third common file. ***}
+
+       op2str : array[tasmop] of string[14] = ('<none>',
+         'add','add.','addo','addo.','addc','addc.','addco','addco.',
+         'adde','adde.','addeo','addeo.','addi','addic','addic.','addis',
+         'addme','addme.','addmeo','addmeo.','addze','addze.','addzeo',
+         'addzeo.','and','and.','andc','andc.','andi.','andis.','b',
+         'ba','bl','bla','bc','bca','bcl','bcla','bcctr','bcctrl','bclr',
+         'bclrl','cmp','cmpi','cmpl','cmpli','cntlzw','cntlzw.','crand',
+         'crandc','creqv','crnand','crnor','cror','crorc','crxor','dcba',
+         'dcbf','dcbi','dcbst','dcbt','divw','divw.','divwo','divwo.',
+         'divwu','divwu.','divwuo','divwuo.','eciwx','ecowx','eieio','eqv',
+         'eqv.','extsb','extsb.','extsh','extsh.','fabs','fabs.','fadd',
+         'fadd.','fadds','fadds.','fcmpo','fcmpu','fctiw','fctw.','fctwz',
+         'fctwz.','fdiv','fdiv.','fdivs','fdivs.','fmadd','fmadd.','fmadds',
+         'fmadds.','fmr','fmsub','fmsub.','fmsubs','fmsubs.','fmul','fmul.',
+         'fmuls','fmuls.','fnabs','fnabs.','fneg','fneg.','fnmadd',
+         'fnmadd.','fnmadds','fnmadds.','fnmsub','fnmsub.','fnmsubs',
+         'fnmsubs.','fres','fres.','frsp','frsp.','frsqrte','frsqrte.',
+         'fsel','fsel.','fsqrt','fsqrt.','fsqrts','fsqrts.','fsub','fsub.',
+         'fsubs','fsubs.','icbi','isync','lbz','lbzu','lbzux','lbzx',
+         'lfd','lfdu','lfdux','lfdx','lfs','lfsu','lfsux','lfsx','lha',
+         'lhau','lhaux','lhax','hbrx','lhz','lhzu','lhzux','lhzx','lmw',
+         'lswi','lswx','lwarx','lwbrx','lwz','lwzu','lwzux','lwzx','mcrf',
+         'mcrfs','mcrxr','lcrxe','mfcr','mffs','maffs.','mfmsr','mfspr','mfsr',
+         'mfsrin','mftb','mtfcrf','mtfd0','mtfsb1','mtfsf','mtfsf.',
+         'mtfsfi','mtfsfi.','mtmsr','mtspr','mtsr','mtsrin','mulhw',
+         'mulhw.','mulhwu','mulhwu.','mulli','mullw','mullw.','mullwo',
+         'mullwo.','nand','nand.','neg','neg.','nego','nego.','nor','nor.',
+         'or','or.','orc','orc.','ori','oris', 'rfi', 'rlwimi', 'rlwimi.',
+         'rlwinm', 'rlwinm.','rlwnm','sc','slw', 'slw.', 'sraw', 'sraw.',
+         'srawi', 'srawi.','srw', 'srw.', 'stb', 'stbu', 'stbux','stbx','stfd',
+         'stfdu', 'stfdux', 'stfdx', 'stfiwx', 'stfs', 'stfsu', 'stfsux', 'stfsx',
+         'sth', 'sthbrx', 'sthu', 'sthux', 'sthx', 'stmw', 'stswi', 'stswx', 'stw',
+         'stwbrx', 'stwx.', 'stwu', 'stwux', 'stwx', 'subf', 'subf.', 'subfo',
+         'subfo.', 'subfc', 'subc.', 'subfco', 'subfco.', 'subfe', 'subfe.',
+         'subfeo', 'subfeo.', 'subfic', 'subfme', 'subfme.', 'subfmeo', 'subfmeo.',
+         'subfze', 'subfze.', 'subfzeo', 'subfzeo.', 'sync', 'tlbia', 'tlbie',
+         'tlbsync', 'tw', 'twi', 'xor', 'xor.', 'xori', 'xoris',
+         { some simplified mnemonics }
+         'subi', 'subis', 'subic', 'subic.', 'sub', 'sub.', 'subo', 'subo.',
+         'subc', 'subc.', 'subco', 'subco.', 'cmpwi', 'cmpw', 'cmplwi', 'cmplw',
+         'extlwi', 'extlwi.', 'extrwi', 'extrwi.', 'inslwi', 'inslwi.', 'insrwi',
+         'insrwi.', 'rotlwi', 'rotlwi.', 'rotlw', 'rotlw.', 'slwi', 'slwi.',
+         'srwi', 'srwi.', 'clrlwi', 'clrlwi.', 'clrrwi', 'clrrwi.', 'clrslwi',
+         'clrslwi.', 'blr', 'bctr', 'blrl', 'bctrl', 'crset', 'crclr', 'crmove',
+         'crnot', 'mt', 'mf','nop', 'li', 'lis', 'la', 'mr','mr.','not', 'mtcr', 'mtlr', 'mflr',
+         'mtctr', 'mfctr');
+
+     symaddr2str: array[trefsymaddr] of string[3] = ('','@ha','@l');
+
+    function getreferencestring(var ref : treference) : string;
+    var
+      s : string;
+    begin
+       with ref do
+        begin
+          inc(offset,offsetfixup);
+          if ((offset < -32768) or (offset > 32767)) and
+             (symaddr = refs_full) then
+            internalerror(19991);
+          if (symaddr = refs_full) then
+            s := ''
+          else if not assigned(symbol) then
+            s := '('
+          else
+            begin
+              {s:='('+symbol.name; CHANGED from this to: }
+              s:= symbol.name;
+              ReplaceForbiddenChars(s);
+              s:='('+s;
+            end;
+
+          if offset<0 then
+           s:=s+tostr(offset)
+          else
+           if (offset>0) then
+            begin
+              if assigned(symbol) then
+               s:=s+'+'+tostr(offset)
+              else
+               s:=s+tostr(offset);
+            end;
+
+           if (symaddr <> refs_full) then
+             s := s+')'+symaddr2str[symaddr];
+
+           if (index=R_NO) and (base<>R_NO) then
+             begin
+                if offset=0 then
+                  begin
+                     if assigned(symbol) then
+                       s:=s+'+0'
+                     else
+                       s:=s+'0';
+                  end;
+                s:=s+'('+mpw_reg2str[base]+')'
+             end
+           else if (index<>R_NO) and (base<>R_NO) and (offset=0) then
+             s:=s+mpw_reg2str[base]+','+mpw_reg2str[index]
+           else if ((index<>R_NO) or (base<>R_NO)) then
+            internalerror(19992);
+        end;
+      getreferencestring:=s;
+    end;
+
+    function getopstr_jmp(const o:toper) : string;
+    var
+      hs : string;
+    begin
+      case o.typ of
+        top_reg :
+          getopstr_jmp:=mpw_reg2str[o.reg];
+        { no top_ref jumping for powerpc }
+        top_const :
+          getopstr_jmp:=tostr(o.val);
+        top_symbol :
+          begin
+            hs:=o.sym.name;
+            ReplaceForbiddenChars(hs);
+            if o.symofs>0 then
+             hs:=hs+'+'+tostr(o.symofs)
+            else
+             if o.symofs<0 then
+              hs:=hs+tostr(o.symofs);
+            getopstr_jmp:=hs;
+          end;
+        top_none:
+          getopstr_jmp:='';
+        else
+{$ifndef testing}
+          internalerror(2002070603);
+{$else testing}
+          begin
+            writeln('internalerror 10001');
+            halt(1);
+          end;
+{$endif testing}
+      end;
+    end;
+
+    function getopstr(const o:toper) : string;
+    var
+      hs : string;
+    begin
+      case o.typ of
+        top_reg:
+          getopstr:=mpw_reg2str[o.reg];
+        { no top_ref jumping for powerpc }
+        top_const:
+          getopstr:=tostr(longint(o.val));
+        top_ref:
+          getopstr:=getreferencestring(o.ref^);
+        top_symbol:
+          begin
+            hs:=o.sym.name;
+            ReplaceForbiddenChars(hs);
+            if o.symofs>0 then
+             hs:=hs+'+'+tostr(o.symofs)
+            else
+             if o.symofs<0 then
+              hs:=hs+tostr(o.symofs);
+            getopstr:=hs;
+          end;
+        else
+{$ifndef testing}
+          internalerror(2002070604);
+{$else testing}
+          begin
+            writeln('internalerror 10001');
+            halt(1);
+          end;
+{$endif testing}
+      end;
+    end;
+
+    function branchmode(o: tasmop): string[4];
+      var tempstr: string[4];
+      begin
+        tempstr := '';
+        case o of
+          A_BCCTR,A_BCCTRL: tempstr := 'ctr';
+          A_BCLR,A_BCLRL: tempstr := 'lr';
+        end;
+        case o of
+          A_BL,A_BLA,A_BCL,A_BCLA,A_BCCTRL,A_BCLRL: tempstr := tempstr+'l';
+        end;
+        case o of
+          A_BA,A_BLA,A_BCA,A_BCLA: tempstr:=tempstr+'a';
+        end;
+        branchmode := tempstr;
+      end;
+
+    function cond2str(op: tasmop; c: tasmcond): string;
+    { note: no checking is performed whether the given combination of }
+    { conditions is valid                                             }
+    var tempstr: string;
+    begin
+      tempstr:=#9;
+      case c.simple of
+        false: cond2str := tempstr+op2str[op]+#9+tostr(c.bo)+','+
+                           tostr(c.bi);
+        true:
+          if (op >= A_B) and (op <= A_BCLRL) then
+            case c.cond of
+              { unconditional branch }
+              C_NONE:
+                cond2str := tempstr+op2str[op];
+              { bdnzt etc }
+              else
+                begin
+                  tempstr := tempstr+'b'+asmcondflag2str[c.cond]+
+                              branchmode(op)+#9;
+                  case c.cond of
+                    C_LT..C_NU:
+                      cond2str := tempstr+mpw_reg2str[c.cr];
+                    C_T..C_DZF:
+                      cond2str := tempstr+tostr(c.crbit);
+                  end;
+                end;
+            end
+          { we have a trap instruction }
+          else
+            begin
+              internalerror(2002070601);
+              { not yet implemented !!!!!!!!!!!!!!!!!!!!! }
+              { case tempstr := 'tw';}
+            end;
+      end;
+    end;
+
+    Function GetInstruction(hp : tai):string; {CHANGED from methot to proc}
+    var op: TAsmOp;
+        s: string;
+        i: byte;
+        sep: string[3];
+    begin
+      op:=taicpu(hp).opcode;
+      if is_calljmp(op) then
+        begin
+          { direct BO/BI in op[0] and op[1] not supported, put them in condition! }
+          case op of
+             A_B,A_BA,A_BL,A_BLA:
+               s:=#9+op2str[op]+#9
+             else
+               s:=cond2str(op,taicpu(hp).condition)+',';
+          end;
+
+          s:=s+getopstr_jmp(taicpu(hp).oper[0]);
+        end
+      else
+        { process operands }
+        begin
+          s:=#9+op2str[op];
+          if taicpu(hp).ops<>0 then
+            begin
+            {
+              if not is_calljmp(op) then
+                sep:=','
+              else
+            }
+                sep:=#9;
+              for i:=0 to taicpu(hp).ops-1 do
+                begin
+                   s:=s+sep+getopstr(taicpu(hp).oper[i]);
+                   sep:=',';
+                end;
+            end;
+        end;
+      GetInstruction:= s
+    end;
+
+    {*** Until here is copyed from agppcgas.pp. ***}
+
+
+    function single2str(d : single) : string;
+      var
+         hs : string;
+         p : byte;
+      begin
+         str(d,hs);
+      { nasm expects a lowercase e }
+         p:=pos('E',hs);
+         if p>0 then
+          hs[p]:='e';
+         p:=pos('+',hs);
+         if p>0 then
+          delete(hs,p,1);
+         single2str:=lower(hs);
+      end;
+
+    function double2str(d : double) : string;
+      var
+         hs : string;
+         p : byte;
+      begin
+         str(d,hs);
+      { nasm expects a lowercase e }
+         p:=pos('E',hs);
+         if p>0 then
+          hs[p]:='e';
+         p:=pos('+',hs);
+         if p>0 then
+          delete(hs,p,1);
+         double2str:=lower(hs);
+      end;
+
+   function fixline(s:string):string;
+   {
+     return s with all leading and ending spaces and tabs removed
+   }
+     var
+       i,j,k : longint;
+     begin
+       i:=length(s);
+       while (i>0) and (s[i] in [#9,' ']) do
+        dec(i);
+       j:=1;
+       while (j<i) and (s[j] in [#9,' ']) do
+        inc(j);
+       for k:=j to i do
+        if s[k] in [#0..#31,#127..#255] then
+         s[k]:='.';
+       fixline:=Copy(s,j,i-j+1);
+     end;
+
+
+{****************************************************************************
+                               PowerPC MPW Assembler
+ ****************************************************************************}
+
+    var
+      LasTSec : TSection;
+      lastfileinfo : tfileposinfo;
+      infile,
+      lastinfile   : tinputfile;
+
+    const
+      ait_const2str:array[ait_const_32bit..ait_const_8bit] of string[8]=
+        (#9'DC.L'#9,#9'DC.W'#9,#9'DC.B'#9);
+
+    Function PadTabs(const p:string;addch:char):string;
+    var
+      s : string;
+      i : longint;
+    begin
+      i:=length(p);
+      if addch<>#0 then
+       begin
+         inc(i);
+         s:=p+addch;
+       end
+      else
+       s:=p;
+      if i<8 then
+       PadTabs:=s+#9#9
+      else
+       PadTabs:=s+#9;
+    end;
+
+
+    procedure TPPCMPWAssembler.WriteTree(p:TAAsmoutput);
+    const
+      nolinetai =[ait_label,
+                  ait_regalloc,ait_tempalloc,
+{$ifdef GDB}
+                  ait_stabn,ait_stabs,ait_stab_function_name,
+{$endif GDB}
+                  ait_cut,ait_marker,ait_align,ait_section];
+
+        {TODO: Perhaps replace internalerror(10000) with something else}
+
+    var
+      s,
+      prefix,
+      suffix   : string;
+      hp       : tai;
+      counter,
+      lines,
+      InlineLevel : longint;
+      i,j,l    : longint;
+      consttyp : taitype;
+      found,
+      do_line,DoNotSplitLine,
+      quoted   : boolean;
+      sep      : char;
+      replaced : boolean;
+
+    begin
+      if not assigned(p) then
+       exit;
+      { lineinfo is only needed for codesegment (PFV) }
+      do_line:=((cs_asm_source in aktglobalswitches) or
+                (cs_lineinfo in aktmoduleswitches))
+                 and (p=codesegment);
+      InlineLevel:=0;
+      DoNotSplitLine:=false;
+      hp:=tai(p.first);
+      while assigned(hp) do
+       begin
+         if do_line and not(hp.typ in nolinetai) and
+            not DoNotSplitLine then
+           begin
+           { load infile }
+             if lastfileinfo.fileindex<>hp.fileinfo.fileindex then
+              begin
+                infile:=current_module.sourcefiles.get_file(hp.fileinfo.fileindex);
+                if assigned(infile) then
+                 begin
+                   { open only if needed !! }
+                   if (cs_asm_source in aktglobalswitches) then
+                    infile.open;
+                 end;
+                { avoid unnecessary reopens of the same file !! }
+                lastfileinfo.fileindex:=hp.fileinfo.fileindex;
+                { be sure to change line !! }
+                lastfileinfo.line:=-1;
+              end;
+           { write source }
+             if (cs_asm_source in aktglobalswitches) and
+                assigned(infile) then
+              begin
+                if (infile<>lastinfile) then
+                  begin
+                    AsmWriteLn(target_asm.comment+'['+infile.name^+']');
+                    if assigned(lastinfile) then
+                      lastinfile.close;
+                  end;
+                if (hp.fileinfo.line<>lastfileinfo.line) and
+                   ((hp.fileinfo.line<infile.maxlinebuf) or (InlineLevel>0)) then
+                  begin
+                    if (hp.fileinfo.line<>0) and
+                       ((infile.linebuf^[hp.fileinfo.line]>=0) or (InlineLevel>0)) then
+                      AsmWriteLn(target_asm.comment+'['+tostr(hp.fileinfo.line)+'] '+
+                        fixline(infile.GetLineStr(hp.fileinfo.line)));
+                    { set it to a negative value !
+                    to make that is has been read already !! PM }
+                    if (infile.linebuf^[hp.fileinfo.line]>=0) then
+                      infile.linebuf^[hp.fileinfo.line]:=-infile.linebuf^[hp.fileinfo.line]-1;
+                  end;
+              end;
+             lastfileinfo:=hp.fileinfo;
+             lastinfile:=infile;
+           end;
+         DoNotSplitLine:=false;
+         case hp.typ of
+            ait_comment:
+              begin
+                 AsmWrite(target_asm.comment);
+                 AsmWritePChar(tai_comment(hp).str);
+                 AsmLn;
+              end;
+            ait_regalloc,
+            ait_tempalloc:
+              ;
+            ait_section:
+              begin
+                 {if LasTSec<>sec_none then
+                  AsmWriteLn('_'+target_asm.secnames[LasTSec]+#9#9'ENDS');}
+                 if tai_section(hp).sec<>sec_none then
+                  begin
+                    AsmLn;
+                    AsmWriteLn(#9+target_asm.secnames[tai_section(hp).sec]){+#9#9+
+                               'SEGMENT'#9'PARA PUBLIC USE32 '''+
+                               target_asm.secnames[tai_section(hp).sec]+'''');}
+                  end;
+                 LasTSec:=tai_section(hp).sec;
+               end;
+             ait_align:
+               begin
+                  case tai_align(hp).aligntype of
+                    1:AsmWriteLn(#9'ALIGN 0');
+                    2:AsmWriteLn(#9'ALIGN 1');
+                    4:AsmWriteLn(#9'ALIGN 2');
+                    otherwise internalerror(10000);
+                  end;
+               end;
+             ait_datablock:
+               begin
+                  s:= tai_datablock(hp).sym.name;
+                  replaced:= ReplaceForbiddenChars(s);
+                  if tai_datablock(hp).is_global then
+                    if replaced then
+                      AsmWriteLn(#9'EXPORT'#9+s+' => '''+tai_datablock(hp).sym.name+'''')
+                    else
+                      AsmWriteLn(#9'EXPORT'#9+s);
+                  AsmWriteLn(PadTabs(s,#0)+'DS.B '+tostr(tai_datablock(hp).size));
+                  {TODO: ? PadTabs(s,#0) }
+               end;
+             ait_const_32bit,
+             ait_const_8bit,
+             ait_const_16bit :
+               begin
+                       AsmWrite(ait_const2str[hp.typ]+tostr(tai_const(hp).value));
+                       consttyp:=hp.typ;
+                       l:=0;
+                       repeat
+                         found:=(not (tai(hp.next)=nil)) and (tai(hp.next).typ=consttyp);
+                         if found then
+                          begin
+                            hp:=tai(hp.next);
+                            s:=','+tostr(tai_const(hp).value);
+                            AsmWrite(s);
+                            inc(l,length(s));
+                          end;
+                       until (not found) or (l>line_length);
+                       AsmLn;
+                     end;
+  ait_const_symbol : begin
+                       AsmWriteLn(#9#9'DD'#9'offset '+tai_const_symbol(hp).sym.name);
+                       if tai_const_symbol(hp).offset>0 then
+                         AsmWrite('+'+tostr(tai_const_symbol(hp).offset))
+                       else if tai_const_symbol(hp).offset<0 then
+                         AsmWrite(tostr(tai_const_symbol(hp).offset));
+                       AsmLn;
+                     end;
+        ait_real_32bit : AsmWriteLn(#9'DC.L'#9'"'+single2str(tai_real_32bit(hp).value)+'"');
+        ait_real_64bit : AsmWriteLn(#9'DC.D'#9'"'+double2str(tai_real_64bit(hp).value)+'"');
+        ait_string : begin
+                       {NOTE When a single quote char is encountered, it is
+                       replaced with a numeric ascii value. It could also
+                       have been replaced with the escape seq of double quotes.}
+                       counter := 0;
+                       lines := tai_string(hp).len div line_length;
+                     { separate lines in different parts }
+                       if tai_string(hp).len > 0 then
+                        Begin
+                          for j := 0 to lines-1 do
+                           begin
+                             AsmWrite(#9'DC.B'#9);
+                             quoted:=false;
+                             for i:=counter to counter+line_length do
+                                begin
+                                  { it is an ascii character. }
+                                  if (ord(tai_string(hp).str[i])>31) and
+                                     (ord(tai_string(hp).str[i])<128) and
+                                     (tai_string(hp).str[i]<>'''') then
+                                      begin
+                                        if not(quoted) then
+                                            begin
+                                              if i>counter then
+                                                AsmWrite(',');
+                                              AsmWrite('''');
+                                            end;
+                                        AsmWrite(tai_string(hp).str[i]);
+                                        quoted:=true;
+                                      end { if > 31 and < 128 and ord('"') }
+                                  else
+                                      begin
+                                          if quoted then
+                                              AsmWrite('''');
+                                          if i>counter then
+                                              AsmWrite(',');
+                                          quoted:=false;
+                                          AsmWrite(tostr(ord(tai_string(hp).str[i])));
+                                      end;
+                               end; { end for i:=0 to... }
+                             if quoted then AsmWrite('''');
+                               AsmWrite(target_info.newline);
+                             counter := counter+line_length;
+                          end; { end for j:=0 ... }
+                        { do last line of lines }
+                        AsmWrite(#9'DC.B'#9);
+                        quoted:=false;
+                        for i:=counter to tai_string(hp).len-1 do
+                          begin
+                            { it is an ascii character. }
+                            if (ord(tai_string(hp).str[i])>31) and
+                               (ord(tai_string(hp).str[i])<128) and
+                               (tai_string(hp).str[i]<>'''') then
+                                begin
+                                  if not(quoted) then
+                                      begin
+                                        if i>counter then
+                                          AsmWrite(',');
+                                        AsmWrite('''');
+                                      end;
+                                  AsmWrite(tai_string(hp).str[i]);
+                                  quoted:=true;
+                                end { if > 31 and < 128 and " }
+                            else
+                                begin
+                                  if quoted then
+                                    AsmWrite('''');
+                                  if i>counter then
+                                      AsmWrite(',');
+                                  quoted:=false;
+                                  AsmWrite(tostr(ord(tai_string(hp).str[i])));
+                                end;
+                          end; { end for i:=0 to... }
+                        if quoted then
+                          AsmWrite('''');
+                        end;
+                       AsmLn;
+                     end;
+         ait_label : begin
+                       if tai_label(hp).l.is_used then
+                        begin
+                          s:= tai_label(hp).l.name;
+                          ReplaceForbiddenChars(s);
+                          AsmWrite(s);
+                          {if assigned(hp.next) and not(tai(hp.next).typ in
+                             [ait_const_32bit,ait_const_16bit,ait_const_8bit,
+                              ait_const_symbol,ait_const_rva,
+                              ait_real_32bit,ait_real_64bit,ait_real_80bit,ait_comp_64bit,ait_string]) then
+                           AsmWriteLn(':')
+                          else
+                           DoNotSplitLine:=true;}
+                          AsmWriteLn(':');
+                        end;
+                     end;
+        ait_direct : begin
+                       AsmWritePChar(tai_direct(hp).str);
+                       AsmLn;
+                     end;
+        ait_symbol : begin
+                       s:= tai_label(hp).l.name;
+                       replaced:= ReplaceForbiddenChars(s);
+                       if tai_symbol(hp).is_global then
+                         if replaced then
+                           AsmWriteLn(#9'EXPORT'#9+s+' => '''+tai_symbol(hp).sym.name+'''')
+                         else
+                           AsmWriteLn(#9'EXPORT'#9+s);
+                       AsmWrite(s);
+                       {if assigned(hp.next) and not(tai(hp.next).typ in
+                          [ait_const_32bit,ait_const_16bit,ait_const_8bit,
+                           ait_const_symbol,ait_const_rva,
+                           ait_real_32bit,ait_real_64bit,ait_real_80bit,ait_comp_64bit,ait_string]) then}
+                       AsmWriteLn(':')
+                     end;
+    ait_symbol_end : begin
+                     end;
+   ait_instruction : begin
+                        AsmWriteLn(GetInstruction(hp));
+                     end;
+{$ifdef GDB}
+             ait_stabn,
+             ait_stabs,
+        ait_force_line,
+ait_stab_function_name : ;
+{$endif GDB}
+           ait_cut : begin
+                     { only reset buffer if nothing has changed }
+                       if AsmSize=AsmStartSize then
+                        AsmClear
+                       else
+                        begin
+                          {
+                          if LasTSec<>sec_none then
+                           AsmWriteLn('_'+target_asm.secnames[LasTSec]+#9#9'ENDS');
+                          AsmLn;
+                          }
+                          AsmWriteLn(#9'END');
+                          AsmClose;
+                          DoAssemble;
+                          AsmCreate(tai_cut(hp).place);
+                        end;
+                     { avoid empty files }
+                       while assigned(hp.next) and (tai(hp.next).typ in [ait_cut,ait_section,ait_comment]) do
+                        begin
+                          if tai(hp.next).typ=ait_section then
+                           begin
+                             lasTSec:=tai_section(hp.next).sec;
+                           end;
+                          hp:=tai(hp.next);
+                        end;
+                       WriteAsmFileHeader;
+
+                       if lasTSec<>sec_none then
+                         AsmWriteLn(#9+target_asm.secnames[lasTSec]);
+                       {   AsmWriteLn('_'+target_asm.secnames[lasTSec]+#9#9+
+                                     'SEGMENT'#9'PARA PUBLIC USE32 '''+
+                                     target_asm.secnames[lasTSec]+'''');
+                       }
+                       AsmStartSize:=AsmSize;
+                     end;
+           ait_marker :
+             begin
+               if tai_marker(hp).kind=InlineStart then
+                 inc(InlineLevel)
+               else if tai_marker(hp).kind=InlineEnd then
+                 dec(InlineLevel);
+             end;
+         else
+          internalerror(10000);
+         end;
+         hp:=tai(hp.next);
+       end;
+    end;
+
+    var
+      currentasmlist : TExternalAssembler;
+
+    procedure writeexternal(p:tnamedindexitem;arg:pointer);
+
+      var
+        s:string;
+
+      begin
+        if tasmsymbol(p).defbind=AB_EXTERNAL then
+          begin
+            {currentasmlist.AsmWriteln(#9'IMPORT'#9+p.name);}
+            s:= p.name;
+            if ReplaceForbiddenChars(s) then
+              currentasmlist.AsmWriteLn(#9'IMPORT'#9+s+' <= '''+p.name+'''')
+            else
+              currentasmlist.AsmWriteLn(#9'IMPORT'#9+s);
+          end;
+      end;
+
+    procedure TPPCMPWAssembler.WriteExternals;
+      begin
+        currentasmlist:=self;
+        objectlibrary.symbolsearch.foreach_static({$ifdef fpcprocvar}@{$endif}writeexternal,nil);
+      end;
+
+
+    function TPPCMPWAssembler.DoAssemble : boolean;
+    var f : file;
+    begin
+      DoAssemble:=Inherited DoAssemble;
+      (*
+      { masm does not seem to recognize specific extensions and uses .obj allways PM }
+      if (aktoutputformat = as_i386_masm) then
+        begin
+          if not(cs_asm_extern in aktglobalswitches) then
+            begin
+              if Not FileExists(objfile) and
+                 FileExists(ForceExtension(objfile,'.obj')) then
+                begin
+                  Assign(F,ForceExtension(objfile,'.obj'));
+                  Rename(F,objfile);
+                end;
+            end
+          else
+            AsmRes.AddAsmCommand('mv',ForceExtension(objfile,'.obj')+' '+objfile,objfile);
+        end;
+      *)
+    end;
+
+    procedure TPPCMPWAssembler.WriteAsmFileHeader;
+
+    begin
+      (*
+      AsmWriteLn(#9'.386p');
+      { masm 6.11 does not seem to like LOCALS PM }
+      if (aktoutputformat = as_i386_tasm) then
+        begin
+          AsmWriteLn(#9'LOCALS '+target_asm.labelprefix);
+        end;
+      AsmWriteLn('DGROUP'#9'GROUP'#9'_BSS,_DATA');
+      AsmWriteLn(#9'ASSUME'#9'CS:_CODE,ES:DGROUP,DS:DGROUP,SS:DGROUP');
+      AsmLn;
+      *)
+
+      AsmWriteLn(#9'STRING ASIS'); {Interpret strings just to be the content between the quotes.}
+      AsmLn;
+    end;
+
+    procedure TPPCMPWAssembler.WriteAsmList;
+    begin
+{$ifdef EXTDEBUG}
+      if assigned(current_module.mainsource) then
+       comment(v_info,'Start writing MPW-styled assembler output for '+current_module.mainsource^);
+{$endif}
+      LasTSec:=sec_none;
+
+      WriteAsmFileHeader;
+      WriteExternals;
+
+    { PowerPC MPW ASM doesn't support stabs, as we now.
+      WriteTree(debuglist);}
+
+      WriteTree(codesegment);
+      WriteTree(datasegment);
+      WriteTree(consts);
+      WriteTree(rttilist);
+      WriteTree(resourcestringlist);
+      WriteTree(bsssegment);
+
+      AsmWriteLn(#9'END');
+      AsmLn;
+
+{$ifdef EXTDEBUG}
+      if assigned(current_module.mainsource) then
+       comment(v_info,'Done writing MPW-styled assembler output for '+current_module.mainsource^);
+{$endif EXTDEBUG}
+   end;
+
+{*****************************************************************************
+                                  Initialize
+*****************************************************************************}
+
+    const
+       as_powerpc_mpw_info : tasminfo =
+          (
+            id           : as_powerpc_mpw;
+            idtxt  : 'MPW';
+            asmbin : 'PPCAsm';
+            asmcmd : '';
+            supported_target : system_any; { what should I write here ?? }
+            outputbinary: false;
+            allowdirect : true;
+            needar : true;
+            labelprefix_only_inside_procedure : true;
+            labelprefix : '@@';
+            comment : '; ';
+            secnames : ('',
+              'CSECT','CSECT','CSECT',  {TODO: Perhaps use other section types.}
+              '','','','','','',
+              '','','')
+          );
+
+initialization
+  RegisterAssembler(as_powerpc_mpw_info,TPPCMPWAssembler);
+end.
+{
+  $Log$
+  Revision 1.6  2002-09-27 21:09:49  florian
+    + readed because previous version was broken
+
+  Revision 1.2  2002/08/31 12:43:31  florian
+    * ppc compilation fixed
+
+  Revision 1.1  2002/08/20 21:40:44  florian
+    + target macos for ppc added
+    + frame work for mpw assembler output
+}
+