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727 lines
25 KiB
ObjectPascal
727 lines
25 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2000 by Florian Klaempfl
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This unit implements an asmoutput class for Intel syntax with Intel i386+
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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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{$ifdef TP}
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{$N+,E+}
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{$endif}
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unit ag386int;
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interface
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uses aasm,assemble;
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type
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pi386intasmlist=^ti386intasmlist;
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ti386intasmlist = object(tasmlist)
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procedure WriteTree(p:paasmoutput);virtual;
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procedure WriteAsmList;virtual;
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procedure WriteExternals;
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end;
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implementation
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uses
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strings,
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globtype,globals,systems,cobjects,
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files,verbose,cpubase,cpuasm
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{$ifdef GDB}
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,gdb
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{$endif GDB}
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;
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const
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line_length = 70;
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{$ifdef EXTTYPE}
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extstr : array[EXT_NEAR..EXT_ABS] of String[8] =
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('NEAR','FAR','PROC','BYTE','WORD','DWORD',
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'CODEPTR','DATAPTR','FWORD','PWORD','QWORD','TBYTE','ABS');
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{$endif}
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function single2str(d : single) : string;
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var
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hs : string;
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p : byte;
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begin
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str(d,hs);
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{ nasm expects a lowercase e }
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p:=pos('E',hs);
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if p>0 then
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hs[p]:='e';
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p:=pos('+',hs);
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if p>0 then
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delete(hs,p,1);
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single2str:=lower(hs);
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end;
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function double2str(d : double) : string;
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var
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hs : string;
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p : byte;
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begin
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str(d,hs);
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{ nasm expects a lowercase e }
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p:=pos('E',hs);
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if p>0 then
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hs[p]:='e';
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p:=pos('+',hs);
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if p>0 then
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delete(hs,p,1);
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double2str:=lower(hs);
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end;
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function extended2str(e : extended) : string;
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var
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hs : string;
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p : byte;
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begin
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str(e,hs);
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{ nasm expects a lowercase e }
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p:=pos('E',hs);
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if p>0 then
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hs[p]:='e';
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p:=pos('+',hs);
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if p>0 then
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delete(hs,p,1);
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extended2str:=lower(hs);
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end;
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function comp2str(d : bestreal) : string;
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type
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pdouble = ^double;
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var
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c : comp;
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dd : pdouble;
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begin
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{$ifdef FPC}
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c:=comp(d);
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{$else}
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c:=d;
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{$endif}
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dd:=pdouble(@c); { this makes a bitwise copy of c into a double }
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comp2str:=double2str(dd^);
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end;
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function getreferencestring(const ref : treference) : string;
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var
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s : string;
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first : boolean;
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begin
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if ref.is_immediate then
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begin
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getreferencestring:=tostr(ref.offset);
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exit;
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end
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else
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with ref do
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begin
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first:=true;
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if ref.segment<>R_NO then
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s:=int_reg2str[segment]+':['
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else
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s:='[';
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if assigned(symbol) then
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begin
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s:=s+symbol^.name;
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first:=false;
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end;
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if (base<>R_NO) then
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begin
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if not(first) then
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s:=s+'+'
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else
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first:=false;
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s:=s+int_reg2str[base];
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end;
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if (index<>R_NO) then
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begin
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if not(first) then
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s:=s+'+'
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else
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first:=false;
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s:=s+int_reg2str[index];
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if scalefactor<>0 then
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s:=s+'*'+tostr(scalefactor);
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end;
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if offset<0 then
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s:=s+tostr(offset)
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else if (offset>0) then
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s:=s+'+'+tostr(offset);
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s:=s+']';
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end;
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getreferencestring:=s;
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end;
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function getopstr(const o:toper;s : topsize; opcode: tasmop;dest : boolean) : string;
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var
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hs : string;
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begin
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case o.typ of
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top_reg :
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getopstr:=int_reg2str[o.reg];
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top_const :
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getopstr:=tostr(o.val);
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top_symbol :
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begin
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if assigned(o.sym) then
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hs:='offset '+o.sym^.name
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else
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hs:='offset ';
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if o.symofs>0 then
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hs:=hs+'+'+tostr(o.symofs)
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else
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if o.symofs<0 then
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hs:=hs+tostr(o.symofs)
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else
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if not(assigned(o.sym)) then
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hs:=hs+'0';
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getopstr:=hs;
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end;
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top_ref :
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begin
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hs:=getreferencestring(o.ref^);
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if ((opcode <> A_LGS) and (opcode <> A_LSS) and
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(opcode <> A_LFS) and (opcode <> A_LDS) and
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(opcode <> A_LES)) then
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Begin
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case s of
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S_B : hs:='byte ptr '+hs;
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S_W : hs:='word ptr '+hs;
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S_L : hs:='dword ptr '+hs;
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S_IS : hs:='word ptr '+hs;
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S_IL : hs:='dword ptr '+hs;
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S_IQ : hs:='qword ptr '+hs;
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S_FS : hs:='dword ptr '+hs;
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S_FL : hs:='qword ptr '+hs;
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S_FX : hs:='tbyte ptr '+hs;
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S_BW : if dest then
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hs:='word ptr '+hs
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else
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hs:='byte ptr '+hs;
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S_BL : if dest then
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hs:='dword ptr '+hs
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else
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hs:='byte ptr '+hs;
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S_WL : if dest then
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hs:='dword ptr '+hs
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else
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hs:='word ptr '+hs;
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end;
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end;
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getopstr:=hs;
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end;
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else
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internalerror(10001);
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end;
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end;
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function getopstr_jmp(const o:toper) : string;
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var
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hs : string;
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begin
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case o.typ of
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top_reg :
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getopstr_jmp:=int_reg2str[o.reg];
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top_const :
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getopstr_jmp:=tostr(o.val);
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top_symbol :
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begin
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hs:=o.sym^.name;
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if o.symofs>0 then
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hs:=hs+'+'+tostr(o.symofs)
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else
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if o.symofs<0 then
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hs:=hs+tostr(o.symofs);
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getopstr_jmp:=hs;
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end;
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top_ref :
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getopstr_jmp:=getreferencestring(o.ref^);
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else
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internalerror(10001);
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end;
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end;
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{****************************************************************************
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TI386INTASMLIST
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****************************************************************************}
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var
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LastSec : tsection;
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const
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ait_const2str:array[ait_const_32bit..ait_const_8bit] of string[8]=
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(#9'DD'#9,#9'DW'#9,#9'DB'#9);
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Function PadTabs(const p:string;addch:char):string;
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var
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s : string;
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i : longint;
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begin
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i:=length(p);
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if addch<>#0 then
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begin
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inc(i);
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s:=p+addch;
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end
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else
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s:=p;
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if i<8 then
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PadTabs:=s+#9#9
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else
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PadTabs:=s+#9;
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end;
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procedure ti386intasmlist.WriteTree(p:paasmoutput);
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const
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allocstr : array[boolean] of string[10]=(' released',' allocated');
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var
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s,
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prefix,
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suffix : string;
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hp : pai;
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counter,
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lines,
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i,j,l : longint;
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consttyp : tait;
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found,
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quoted : boolean;
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sep : char;
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begin
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if not assigned(p) then
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exit;
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hp:=pai(p^.first);
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while assigned(hp) do
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begin
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case hp^.typ of
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ait_comment : Begin
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AsmWrite(target_asm.comment);
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AsmWritePChar(pai_asm_comment(hp)^.str);
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AsmLn;
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End;
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ait_regalloc,
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ait_tempalloc : ;
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ait_section : begin
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if LastSec<>sec_none then
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AsmWriteLn('_'+target_asm.secnames[LastSec]+#9#9'ENDS');
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if pai_section(hp)^.sec<>sec_none then
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begin
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AsmLn;
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AsmWriteLn('_'+target_asm.secnames[pai_section(hp)^.sec]+#9#9+
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'SEGMENT'#9'PARA PUBLIC USE32 '''+
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target_asm.secnames[pai_section(hp)^.sec]+'''');
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end;
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LastSec:=pai_section(hp)^.sec;
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end;
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ait_align : begin
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{ CAUSES PROBLEMS WITH THE SEGMENT DEFINITION }
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{ SEGMENT DEFINITION SHOULD MATCH TYPE OF ALIGN }
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{ HERE UNDER TASM! }
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AsmWriteLn(#9'ALIGN '+tostr(pai_align(hp)^.aligntype));
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end;
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ait_datablock : begin
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if pai_datablock(hp)^.is_global then
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AsmWriteLn(#9'PUBLIC'#9+pai_datablock(hp)^.sym^.name);
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AsmWriteLn(PadTabs(pai_datablock(hp)^.sym^.name,#0)+'DB'#9+tostr(pai_datablock(hp)^.size)+' DUP(?)');
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end;
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ait_const_32bit,
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ait_const_8bit,
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ait_const_16bit : begin
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AsmWrite(ait_const2str[hp^.typ]+tostr(pai_const(hp)^.value));
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consttyp:=hp^.typ;
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l:=0;
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repeat
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found:=(not (Pai(hp^.next)=nil)) and (Pai(hp^.next)^.typ=consttyp);
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if found then
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begin
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hp:=Pai(hp^.next);
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s:=','+tostr(pai_const(hp)^.value);
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AsmWrite(s);
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inc(l,length(s));
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end;
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until (not found) or (l>line_length);
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AsmLn;
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end;
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ait_const_symbol : begin
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AsmWriteLn(#9#9'DD'#9'offset '+pai_const_symbol(hp)^.sym^.name);
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if pai_const_symbol(hp)^.offset>0 then
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AsmWrite('+'+tostr(pai_const_symbol(hp)^.offset))
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else if pai_const_symbol(hp)^.offset<0 then
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AsmWrite(tostr(pai_const_symbol(hp)^.offset));
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AsmLn;
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end;
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ait_const_rva : begin
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AsmWriteLn(#9#9'RVA'#9+pai_const_symbol(hp)^.sym^.name);
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end;
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ait_real_32bit : AsmWriteLn(#9#9'DD'#9+single2str(pai_real_32bit(hp)^.value));
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ait_real_64bit : AsmWriteLn(#9#9'DQ'#9+double2str(pai_real_64bit(hp)^.value));
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ait_real_80bit : AsmWriteLn(#9#9'DT'#9+extended2str(pai_real_80bit(hp)^.value));
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ait_comp_64bit : AsmWriteLn(#9#9'DQ'#9+comp2str(pai_real_80bit(hp)^.value));
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ait_string : begin
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counter := 0;
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lines := pai_string(hp)^.len div line_length;
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{ separate lines in different parts }
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if pai_string(hp)^.len > 0 then
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Begin
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for j := 0 to lines-1 do
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begin
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AsmWrite(#9#9'DB'#9);
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quoted:=false;
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for i:=counter to counter+line_length do
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begin
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{ it is an ascii character. }
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if (ord(pai_string(hp)^.str[i])>31) and
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(ord(pai_string(hp)^.str[i])<128) and
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(pai_string(hp)^.str[i]<>'"') then
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begin
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if not(quoted) then
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begin
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if i>counter then
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AsmWrite(',');
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AsmWrite('"');
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end;
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AsmWrite(pai_string(hp)^.str[i]);
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quoted:=true;
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end { if > 31 and < 128 and ord('"') }
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else
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begin
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if quoted then
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AsmWrite('"');
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if i>counter then
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AsmWrite(',');
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quoted:=false;
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AsmWrite(tostr(ord(pai_string(hp)^.str[i])));
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end;
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end; { end for i:=0 to... }
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if quoted then AsmWrite('"');
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AsmWrite(target_os.newline);
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counter := counter+line_length;
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end; { end for j:=0 ... }
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{ do last line of lines }
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AsmWrite(#9#9'DB'#9);
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quoted:=false;
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for i:=counter to pai_string(hp)^.len-1 do
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begin
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{ it is an ascii character. }
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if (ord(pai_string(hp)^.str[i])>31) and
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(ord(pai_string(hp)^.str[i])<128) and
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(pai_string(hp)^.str[i]<>'"') then
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begin
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if not(quoted) then
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begin
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if i>counter then
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AsmWrite(',');
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AsmWrite('"');
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end;
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AsmWrite(pai_string(hp)^.str[i]);
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quoted:=true;
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end { if > 31 and < 128 and " }
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else
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begin
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if quoted then
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AsmWrite('"');
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if i>counter then
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AsmWrite(',');
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quoted:=false;
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AsmWrite(tostr(ord(pai_string(hp)^.str[i])));
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end;
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end; { end for i:=0 to... }
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if quoted then
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AsmWrite('"');
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end;
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AsmLn;
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end;
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ait_label : begin
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if pai_label(hp)^.l^.is_used then
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begin
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AsmWrite(pai_label(hp)^.l^.name);
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if assigned(hp^.next) and not(pai(hp^.next)^.typ in
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[ait_const_32bit,ait_const_16bit,ait_const_8bit,
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ait_const_symbol,ait_const_rva,
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ait_real_32bit,ait_real_64bit,ait_real_80bit,ait_comp_64bit,ait_string]) then
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AsmWriteLn(':');
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end;
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end;
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ait_direct : begin
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AsmWritePChar(pai_direct(hp)^.str);
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AsmLn;
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end;
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ait_symbol : begin
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if pai_symbol(hp)^.is_global then
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AsmWriteLn(#9'PUBLIC'#9+pai_symbol(hp)^.sym^.name);
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AsmWrite(pai_symbol(hp)^.sym^.name);
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if assigned(hp^.next) and not(pai(hp^.next)^.typ in
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[ait_const_32bit,ait_const_16bit,ait_const_8bit,
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ait_const_symbol,ait_const_rva,
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ait_real_32bit,ait_real_64bit,ait_real_80bit,ait_comp_64bit,ait_string]) then
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AsmWriteLn(':')
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end;
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ait_symbol_end : begin
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end;
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ait_instruction : begin
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{ We need intel order, no At&t }
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paicpu(hp)^.SwapOperands;
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{ Reset }
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suffix:='';
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prefix:= '';
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s:='';
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{ added prefix instructions, must be on same line as opcode }
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if (paicpu(hp)^.ops = 0) and
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((paicpu(hp)^.opcode = A_REP) or
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(paicpu(hp)^.opcode = A_LOCK) or
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(paicpu(hp)^.opcode = A_REPE) or
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(paicpu(hp)^.opcode = A_REPNZ) or
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(paicpu(hp)^.opcode = A_REPZ) or
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(paicpu(hp)^.opcode = A_REPNE)) then
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Begin
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prefix:=int_op2str[paicpu(hp)^.opcode]+#9;
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hp:=Pai(hp^.next);
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{ this is theorically impossible... }
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if hp=nil then
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begin
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s:=#9#9+prefix;
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AsmWriteLn(s);
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break;
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end;
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{ nasm prefers prefix on a line alone }
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AsmWriteln(#9#9+prefix);
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prefix:='';
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end
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else
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prefix:= '';
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if paicpu(hp)^.ops<>0 then
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begin
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if is_calljmp(paicpu(hp)^.opcode) then
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s:=#9+getopstr_jmp(paicpu(hp)^.oper[0])
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else
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begin
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for i:=0to paicpu(hp)^.ops-1 do
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begin
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if i=0 then
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sep:=#9
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else
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sep:=',';
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s:=s+sep+getopstr(paicpu(hp)^.oper[i],paicpu(hp)^.opsize,paicpu(hp)^.opcode,(i=2));
|
|
end;
|
|
end;
|
|
end;
|
|
AsmWriteLn(#9#9+prefix+int_op2str[paicpu(hp)^.opcode]+cond2str[paicpu(hp)^.condition]+suffix+s);
|
|
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(pai_cut(hp)^.place);
|
|
end;
|
|
{ avoid empty files }
|
|
while assigned(hp^.next) and (pai(hp^.next)^.typ in [ait_cut,ait_section,ait_comment]) do
|
|
begin
|
|
if pai(hp^.next)^.typ=ait_section then
|
|
begin
|
|
lastsec:=pai_section(hp^.next)^.sec;
|
|
end;
|
|
hp:=pai(hp^.next);
|
|
end;
|
|
AsmWriteLn(#9'.386p');
|
|
{ I was told that this isn't necesarry because }
|
|
{ the labels generated by FPC are unique (FK) }
|
|
{ AsmWriteLn(#9'LOCALS '+target_asm.labelprefix); }
|
|
if lastsec<>sec_none then
|
|
AsmWriteLn('_'+target_asm.secnames[lastsec]+#9#9+
|
|
'SEGMENT'#9'PARA PUBLIC USE32 '''+
|
|
target_asm.secnames[lastsec]+'''');
|
|
AsmStartSize:=AsmSize;
|
|
end;
|
|
ait_marker: ;
|
|
else
|
|
internalerror(10000);
|
|
end;
|
|
hp:=pai(hp^.next);
|
|
end;
|
|
end;
|
|
|
|
var
|
|
currentasmlist : PAsmList;
|
|
|
|
procedure writeexternal(p:pnamedindexobject);{$ifndef FPC}far;{$endif}
|
|
begin
|
|
if pasmsymbol(p)^.typ=AS_EXTERNAL then
|
|
currentasmlist^.AsmWriteln(#9'EXTRN'#9+p^.name);
|
|
end;
|
|
|
|
procedure ti386intasmlist.WriteExternals;
|
|
begin
|
|
currentasmlist:=@self;
|
|
AsmSymbolList^.foreach({$ifndef VER70}@{$endif}writeexternal);
|
|
end;
|
|
|
|
|
|
procedure ti386intasmlist.WriteAsmList;
|
|
begin
|
|
{$ifdef EXTDEBUG}
|
|
if assigned(current_module^.mainsource) then
|
|
comment(v_info,'Start writing intel-styled assembler output for '+current_module^.mainsource^);
|
|
{$endif}
|
|
LastSec:=sec_none;
|
|
AsmWriteLn(#9'.386p');
|
|
AsmWriteLn(#9'LOCALS '+target_asm.labelprefix);
|
|
AsmWriteLn('DGROUP'#9'GROUP'#9'_BSS,_DATA');
|
|
AsmWriteLn(#9'ASSUME'#9'CS:_CODE,ES:DGROUP,DS:DGROUP,SS:DGROUP');
|
|
AsmLn;
|
|
|
|
countlabelref:=false;
|
|
|
|
WriteExternals;
|
|
|
|
{ INTEL ASM doesn't support stabs
|
|
WriteTree(debuglist);}
|
|
|
|
WriteTree(codesegment);
|
|
WriteTree(datasegment);
|
|
WriteTree(consts);
|
|
WriteTree(rttilist);
|
|
WriteTree(resourcestringlist);
|
|
WriteTree(bsssegment);
|
|
countlabelref:=true;
|
|
|
|
AsmWriteLn(#9'END');
|
|
AsmLn;
|
|
|
|
{$ifdef EXTDEBUG}
|
|
if assigned(current_module^.mainsource) then
|
|
comment(v_info,'Done writing intel-styled assembler output for '+current_module^.mainsource^);
|
|
{$endif EXTDEBUG}
|
|
end;
|
|
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.58 2000-01-07 01:14:18 peter
|
|
* updated copyright to 2000
|
|
|
|
Revision 1.57 1999/12/19 17:36:25 florian
|
|
* generation of LOCALS @@ removed
|
|
|
|
Revision 1.56 1999/11/06 14:34:16 peter
|
|
* truncated log to 20 revs
|
|
|
|
Revision 1.55 1999/11/02 15:06:56 peter
|
|
* import library fixes for win32
|
|
* alignment works again
|
|
|
|
Revision 1.54 1999/09/10 15:41:18 peter
|
|
* added symbol_end
|
|
|
|
Revision 1.53 1999/09/02 18:47:42 daniel
|
|
* Could not compile with TP, some arrays moved to heap
|
|
* NOAG386BIN default for TP
|
|
* AG386* files were not compatible with TP, fixed.
|
|
|
|
Revision 1.52 1999/08/25 11:59:36 jonas
|
|
* changed pai386, paippc and paiapha (same for tai*) to paicpu (taicpu)
|
|
|
|
Revision 1.51 1999/08/04 00:22:36 florian
|
|
* renamed i386asm and i386base to cpuasm and cpubase
|
|
|
|
Revision 1.50 1999/07/22 09:37:31 florian
|
|
+ resourcestring implemented
|
|
+ start of longstring support
|
|
|
|
Revision 1.49 1999/07/18 14:47:19 florian
|
|
* bug 487 fixed, (inc(<property>) isn't allowed)
|
|
* more fixes to compile with Delphi
|
|
|
|
Revision 1.48 1999/07/18 10:19:39 florian
|
|
* made it compilable with Dlephi 4 again
|
|
+ fixed problem with large stack allocations on win32
|
|
|
|
Revision 1.47 1999/06/02 22:44:01 pierre
|
|
* previous wrong log corrected
|
|
|
|
Revision 1.46 1999/06/02 22:25:26 pierre
|
|
* changed $ifdef FPC @ into $ifndef TP
|
|
|
|
Revision 1.45 1999/06/01 14:45:43 peter
|
|
* @procvar is now always needed for FPC
|
|
|
|
Revision 1.44 1999/05/27 19:44:00 peter
|
|
* removed oldasm
|
|
* plabel -> pasmlabel
|
|
* -a switches to source writing automaticly
|
|
* assembler readers OOPed
|
|
* asmsymbol automaticly external
|
|
* jumptables and other label fixes for asm readers
|
|
|
|
Revision 1.43 1999/05/23 18:41:55 florian
|
|
* better error recovering in typed constants
|
|
* some problems with arrays of const fixed, some problems
|
|
due my previous
|
|
- the location type of array constructor is now LOC_MEM
|
|
- the pushing of high fixed
|
|
- parameter copying fixed
|
|
- zero temp. allocation removed
|
|
* small problem in the assembler writers fixed:
|
|
ref to nil wasn't written correctly
|
|
|
|
Revision 1.42 1999/05/21 13:54:42 peter
|
|
* NEWLAB for label as symbol
|
|
|
|
Revision 1.41 1999/05/12 00:19:38 peter
|
|
* removed R_DEFAULT_SEG
|
|
* uniform float names
|
|
|
|
Revision 1.40 1999/05/10 15:18:14 peter
|
|
* fixed condition writing
|
|
|
|
Revision 1.39 1999/05/08 19:52:33 peter
|
|
+ MessagePos() which is enhanced Message() function but also gets the
|
|
position info
|
|
* Removed comp warnings
|
|
|
|
Revision 1.38 1999/05/07 00:08:49 pierre
|
|
* AG386BIN cond -> OLDASM, only cosmetic
|
|
|
|
Revision 1.37 1999/05/06 09:05:09 peter
|
|
* generic write_float and str_float
|
|
* fixed constant float conversions
|
|
|
|
Revision 1.36 1999/05/04 21:44:31 florian
|
|
* changes to compile it with Delphi 4.0
|
|
|
|
}
|