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644 lines
27 KiB
ObjectPascal
644 lines
27 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998 by the FPC development team
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This unit implements an asmoutput class for Macintosh MPW syntax
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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 ag68kmpw;
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interface
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uses aasm,assemble;
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type
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pm68kmpwasmlist=^tm68kmpwasmlist;
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tm68kmpwasmlist = object(tasmlist)
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procedure WriteTree(p:paasmoutput);virtual;
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procedure WriteAsmList;virtual;
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end;
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implementation
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uses
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globtype,systems,
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dos,globals,cobjects,m68k,
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strings,files,verbose
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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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function double2str(d : double) : string;
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var
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hs : string;
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begin
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str(d,hs);
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double2str:=hs;
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end;
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(* TO SUPPORT SOONER OR LATER!!!
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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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{$ifdef TP}
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c:=d;
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{$else}
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c:=comp(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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const
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line_length = 70;
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function getreferencestring(const ref : treference; var importstring: string) : string;
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var
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s : string;
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begin
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s:='';
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importstring:='';
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if ref.isintvalue then
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s:='#'+tostr(ref.offset)
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else
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with ref do
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begin
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if (index=R_NO) and (base=R_NO) and (direction=dir_none) then
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begin
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if assigned(symbol) then
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begin
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s:=s+symbol^;
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importstring:=symbol^;
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if offset<0 then
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s:=s+tostr(offset)
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else
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if (offset>0) then
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s:=s+'+'+tostr(offset);
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s:='('+s+').L';
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end
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else
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begin
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{ direct memory addressing }
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s:=s+'('+tostr(offset)+').L';
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end;
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end
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{ index<>R_NO or base<>R_NO }
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else
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begin
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if assigned(symbol) then
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s:=s+symbol^;
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if offset<0 then
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s:=s+tostr(offset)
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else
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if (offset>0) then
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begin
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if (symbol=nil) then s:=tostr(offset)
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else s:=s+'+'+tostr(offset);
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end;
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if (index<>R_NO) and (base=R_NO) and (direction=dir_none) then
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begin
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if (scalefactor = 1) or (scalefactor = 0) then
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begin
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if offset = 0 then
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s:=s+'0(,'+mot_reg2str[index]+'.l)'
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else
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s:=s+'(,'+mot_reg2str[index]+'.l)';
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end
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else
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begin
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if offset = 0 then
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s:=s+'0(,'+mot_reg2str[index]+'.l*'+tostr(scalefactor)+')'
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else
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s:=s+'(,'+mot_reg2str[index]+'.l*'+tostr(scalefactor)+')';
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end
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end
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else
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if (index=R_NO) and (base<>R_NO) and (direction=dir_inc) then
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begin
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if (scalefactor = 1) or (scalefactor = 0) then
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s:=s+'('+mot_reg2str[base]+')+'
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else
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InternalError(10002);
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end
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else
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if (index=R_NO) and (base<>R_NO) and (direction=dir_dec) then
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begin
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if (scalefactor = 1) or (scalefactor = 0) then
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s:=s+'-('+mot_reg2str[base]+')'
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else
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InternalError(10003);
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end
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else
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if (index=R_NO) and (base<>R_NO) and (direction=dir_none) then
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begin
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s:=s+'('+mot_reg2str[base]+')';
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end
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else
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if (index<>R_NO) and (base<>R_NO) and (direction=dir_none) then
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begin
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if (scalefactor = 1) or (scalefactor = 0) then
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begin
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if offset = 0 then
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s:=s+'0('+mot_reg2str[base]+','+mot_reg2str[index]+'.l)'
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else
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s:=s+'('+mot_reg2str[base]+','+mot_reg2str[index]+'.l)';
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end
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else
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begin
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if offset = 0 then
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s:=s+'0('+mot_reg2str[base]+','+mot_reg2str[index]+'.l*'+tostr(scalefactor)+')'
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else
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s:=s+'('+mot_reg2str[base]+','+mot_reg2str[index]+'.l*'+tostr(scalefactor)+')';
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end
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end
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{ if this is not a symbol, and is not in the above, then there is an error }
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else
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if NOT assigned(symbol) then
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InternalError(10004);
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end; { endif }
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end; { end with }
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getreferencestring:=s;
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end;
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function getopstr(t : byte;o : pointer) : string;
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var
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hs : string;
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i: tregister;
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importstring: string;
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begin
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case t of
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top_reg : getopstr:=mot_reg2str[tregister(o)];
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top_reglist: begin
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hs:='';
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for i:=R_NO to R_FPSR do
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begin
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if i in tregisterlist(o^) then
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hs:=hs+mot_reg2str[i]+'/';
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end;
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delete(hs,length(hs),1);
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getopstr := hs;
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end;
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top_ref : getopstr:=getreferencestring(preference(o)^,importstring);
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top_const : getopstr:='#'+tostr(longint(o));
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top_symbol : begin
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hs[0]:=chr(strlen(pchar(pcsymbol(o)^.symbol)));
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move(pchar(pcsymbol(o)^.symbol)^,hs[1],byte(hs[0]));
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if pcsymbol(o)^.offset>0 then
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hs:=hs+'+'+tostr(pcsymbol(o)^.offset)
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else if pcsymbol(o)^.offset<0 then
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hs:=hs+tostr(pcsymbol(o)^.offset);
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getopstr:=hs;
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end;
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else internalerror(10001);
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end;
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end;
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function getopstr_jmp(t : byte;o : pointer; var importname: string) : string;
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var
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hs : string;
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begin
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importname:='';
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case t of
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top_reg : getopstr_jmp:=mot_reg2str[tregister(o)];
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top_ref : getopstr_jmp:=getreferencestring(preference(o)^,importname);
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top_const : getopstr_jmp:=tostr(longint(o));
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top_symbol : begin
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hs[0]:=chr(strlen(pchar(pcsymbol(o)^.symbol)));
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move(pchar(pcsymbol(o)^.symbol)^,hs[1],byte(hs[0]));
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if pcsymbol(o)^.offset>0 then
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hs:=hs+'+'+tostr(pcsymbol(o)^.offset)
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else if pcsymbol(o)^.offset<0 then
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hs:=hs+tostr(pcsymbol(o)^.offset);
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importname:=hs;
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hs:='('+hs+').L';
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getopstr_jmp:=hs;
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end;
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else internalerror(10001);
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end;
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end;
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{****************************************************************************
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TM68KMOTASMLIST
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****************************************************************************}
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var
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LastSec : tsection;
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procedure tm68kmpwasmlist.WriteTree(p:paasmoutput);
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var
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hp : pai;
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s : string;
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counter,
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i,j,lines : longint;
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quoted : boolean;
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importname: string;
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begin
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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_section : begin
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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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end;
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LastSec:=pai_section(hp)^.sec;
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end;
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{$ifdef DREGALLOC}
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ait_regalloc : AsmWriteLn(target_asm.comment+'Register '+att_reg2str[pairegalloc(hp)^.reg]+' allocated');
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ait_regdealloc : AsmWriteLn(target_asm.comment+'Register '+att_reg2str[pairegalloc(hp)^.reg]+' released');
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{$endif DREGALLOC}
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ait_align : AsmWriteLn(#9'ALIGN '+tostr(pai_align(hp)^.aligntype));
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ait_external : AsmWriteLn(#9'IMPORT'#9+StrPas(pai_external(hp)^.name));
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ait_real_extended : Message(assem_e_extended_not_supported);
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ait_comp : Message(assem_e_comp_not_supported);
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ait_datablock : begin
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{ ------------------------------------------------------- }
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{ ----------- ALIGNMENT FOR ANY NON-BYTE VALUE ---------- }
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{ ------------- REQUIREMENT FOR 680x0 ------------------- }
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{ ------------------------------------------------------- }
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if pai_datablock(hp)^.size <> 1 then
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begin
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if not(cs_littlesize in aktglobalswitches) then
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AsmWriteLn(#9'ALIGN 4')
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else
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AsmWriteLn(#9'ALIGN 2');
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end;
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if pai_datablock(hp)^.is_global then
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AsmWriteLn(#9'EXPORT'#9+StrPas(pai_datablock(hp)^.name));
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AsmWriteLn(#9#9+StrPas(pai_datablock(hp)^.name)+#9#9'DS.B '+tostr(pai_datablock(hp)^.size));
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end;
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ait_const_32bit : Begin
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AsmWriteLn(#9#9'DC.L'#9+tostr(pai_const(hp)^.value));
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end;
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ait_const_16bit : Begin
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AsmWriteLn(#9#9'DC.W'#9+tostr(pai_const(hp)^.value));
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end;
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ait_const_8bit : AsmWriteLn(#9#9'DC.B'#9+tostr(pai_const(hp)^.value));
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ait_const_symbol : Begin
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AsmWriteLn(#9#9+'DC.L '#9+StrPas(pchar(pai_const(hp)^.value)));
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end;
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ait_const_symbol_offset :
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Begin
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AsmWrite(#9#9+'DC.L '#9);
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AsmWritePChar(pai_const_symbol_offset(hp)^.name);
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if pai_const_symbol_offset(hp)^.offset>0 then
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AsmWrite('+'+tostr(pai_const_symbol_offset(hp)^.offset))
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else if pai_const_symbol_offset(hp)^.offset<0 then
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AsmWrite(tostr(pai_const_symbol_offset(hp)^.offset));
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AsmLn;
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end;
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ait_real_64bit : Begin
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AsmWriteLn(#9#9'DC.D'#9+double2str(pai_double(hp)^.value));
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end;
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ait_real_32bit : Begin
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AsmWriteLn(#9#9'DC.S'#9+double2str(pai_single(hp)^.value));
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end;
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{ TO SUPPORT SOONER OR LATER!!!
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ait_comp : AsmWriteLn(#9#9'DC.D'#9+comp2str(pai_extended(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'DC.B'#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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AsmLn;
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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'DC.B'#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 AsmWrite('''');
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end; { endif }
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AsmLn;
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end;
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ait_label : begin
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if assigned(hp^.next) and (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_symbol_offset,
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ait_real_64bit,ait_real_32bit,ait_string]) then
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begin
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if not(cs_littlesize in aktglobalswitches) then
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AsmWriteLn(#9'ALIGN 4')
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else
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AsmWriteLn(#9'ALIGN 2');
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end;
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AsmWrite(lab2str(pai_label(hp)^.l));
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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_symbol_offset,
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ait_real_64bit,ait_string]) then
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AsmWriteLn(':');
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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_labeled_instruction :
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{ Labeled instructions are those which don't require an }
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{ intersegment jump -- jmp/bra/bcc to local labels. }
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Begin
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{ labeled operand }
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if pai_labeled(hp)^._op1 = R_NO then
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AsmWriteLn(#9+mot_op2str[pai_labeled(hp)^._operator]+#9+lab2str(pai_labeled(hp)^.lab))
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else
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{ labeled operand with register }
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AsmWriteLn(#9+mot_op2str[pai_labeled(hp)^._operator]+#9+
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mot_reg2str[pai_labeled(hp)^._op1]+','+lab2str(pai_labeled(hp)^.lab))
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end;
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ait_symbol : begin
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{ ------------------------------------------------------- }
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{ ----------- ALIGNMENT FOR ANY NON-BYTE VALUE ---------- }
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{ ------------- REQUIREMENT FOR 680x0 ------------------- }
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{ ------------------------------------------------------- }
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if assigned(hp^.next) and (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_symbol_offset,
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ait_real_64bit,ait_real_32bit,ait_string]) then
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begin
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if not(cs_littlesize in aktglobalswitches) then
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AsmWriteLn(#9'ALIGN 4')
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else
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AsmWriteLn(#9'ALIGN 2');
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end;
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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_symbol_offset,
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ait_real_64bit,ait_string,ait_real_32bit]) then
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{ this is a subroutine }
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Begin
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if pai_symbol(hp)^.is_global then
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AsmWriteLn(#9+StrPas(pai_symbol(hp)^.name)+' PROC EXPORT')
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else
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AsmWriteLn(#9+StrPas(pai_symbol(hp)^.name)+' PROC');
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AsmWriteLn(#9'WITH _DATA');
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end
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else
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Begin
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if pai_symbol(hp)^.is_global then
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AsmWriteLn(#9'EXPORT'#9+StrPas(pai_symbol(hp)^.name))
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else
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AsmWriteLn(#9'ENTRY'#9+StrPas(pai_symbol(hp)^.name));
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AsmWritePChar(pai_symbol(hp)^.name);
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end;
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end;
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ait_instruction : begin
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s:=#9+mot_op2str[pai68k(hp)^._operator]+mot_opsize2str[pai68k(hp)^.size];
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if pai68k(hp)^.op1t<>top_none then
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begin
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{ call and jmp need an extra handling }
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{ this code is only called if jmp isn't a labeled instruction }
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if pai68k(hp)^._operator in [A_JSR,A_JMP] then
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begin
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s:=s+#9+getopstr_jmp(pai68k(hp)^.op1t,pai68k(hp)^.op1,importname);
|
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if importname <> '' then
|
|
AsmWriteLn(#9+'IMPORT '+importname);
|
|
end
|
|
else
|
|
begin
|
|
if pai68k(hp)^.op1t = top_reglist then
|
|
s:=s+#9+getopstr(pai68k(hp)^.op1t,@(pai68k(hp)^.reglist))
|
|
else
|
|
s:=s+#9+getopstr(pai68k(hp)^.op1t,pai68k(hp)^.op1);
|
|
if pai68k(hp)^.op2t<>top_none then
|
|
begin
|
|
if pai68k(hp)^.op2t = top_reglist then
|
|
s:=s+','+getopstr(pai68k(hp)^.op2t,@pai68k(hp)^.reglist)
|
|
else
|
|
s:=s+','+getopstr(pai68k(hp)^.op2t,pai68k(hp)^.op2);
|
|
{ three operands }
|
|
if pai68k(hp)^.op3t<>top_none then
|
|
begin
|
|
if (pai68k(hp)^._operator = A_DIVSL) or
|
|
(pai68k(hp)^._operator = A_DIVUL) or
|
|
(pai68k(hp)^._operator = A_MULU) or
|
|
(pai68k(hp)^._operator = A_MULS) or
|
|
(pai68k(hp)^._operator = A_DIVS) or
|
|
(pai68k(hp)^._operator = A_DIVU) then
|
|
s:=s+':'+getopstr(pai68k(hp)^.op3t,pai68k(hp)^.op3)
|
|
else
|
|
s:=s+','+getopstr(pai68k(hp)^.op3t,pai68k(hp)^.op3);
|
|
end;
|
|
end;
|
|
end;
|
|
end;
|
|
AsmWriteLn(s);
|
|
{ if this instruction is the last before }
|
|
{ returning it MIGHT be the end of a }
|
|
{ pascal subroutine, if this is so, then }
|
|
if (pai68k(hp)^._operator = A_RTS) or
|
|
(pai68k(hp)^._operator = A_RTD) then
|
|
Begin
|
|
{ if next is not an instruction nor a label }
|
|
{ this is the end of a procedure probably }
|
|
{ and not an inline assembler instruction }
|
|
if assigned(hp^.next) and (
|
|
(pai(hp^.next)^.typ = ait_label) or
|
|
(pai(hp^.next)^.typ = ait_instruction) or
|
|
(pai(hp^.next)^.typ = ait_labeled_instruction)) then
|
|
begin
|
|
end
|
|
else
|
|
begin
|
|
AsmWriteLn(#9'ENDWITH');
|
|
AsmWriteLn(#9'ENDPROC');
|
|
AsmLn;
|
|
end;
|
|
end;
|
|
end;
|
|
{$ifdef GDB}
|
|
ait_stabn,
|
|
ait_stabs,
|
|
ait_force_line,
|
|
ait_stab_function_name : ;
|
|
{$endif GDB}
|
|
ait_marker : ;
|
|
else
|
|
internalerror(10000);
|
|
end;
|
|
hp:=pai(hp^.next);
|
|
end;
|
|
end;
|
|
|
|
procedure tm68kmpwasmlist.WriteAsmList;
|
|
begin
|
|
{$ifdef EXTDEBUG}
|
|
if assigned(current_module^.mainsource) then
|
|
comment(v_info,'Start writing MPW-styled assembler output for '+current_module^.mainsource^);
|
|
{$endif}
|
|
WriteTree(externals);
|
|
AsmLn;
|
|
AsmWriteLn(#9'_DATA'#9'RECORD');
|
|
{ write a signature to the file }
|
|
AsmWriteLn(#9'ALIGN 4');
|
|
(* now in pmodules
|
|
{$ifdef EXTDEBUG}
|
|
AsmWriteLn(#9'DC.B'#9'''compiled by FPC '+version_string+'\0''');
|
|
AsmWriteLn(#9'DC.B'#9'''target: '+target_info.short_name+'\0''');
|
|
{$endif EXTDEBUG} *)
|
|
WriteTree(datasegment);
|
|
WriteTree(consts);
|
|
WriteTree(bsssegment);
|
|
AsmWriteLn(#9'ENDR');
|
|
|
|
AsmLn;
|
|
WriteTree(codesegment);
|
|
|
|
|
|
AsmLn;
|
|
AsmWriteLn(#9'END');
|
|
{$ifdef EXTDEBUG}
|
|
if assigned(current_module^.mainsource) then
|
|
comment(v_info,'Done writing MPW-styled assembler output for '+current_module^.mainsource^);
|
|
{$endif}
|
|
end;
|
|
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.8 1998-12-11 00:02:42 peter
|
|
+ globtype,tokens,version unit splitted from globals
|
|
|
|
Revision 1.7 1998/11/12 11:19:39 pierre
|
|
* fix for first line of function break
|
|
|
|
Revision 1.6 1998/10/29 11:35:39 florian
|
|
* some dll support for win32
|
|
* fixed assembler writing for PalmOS
|
|
|
|
Revision 1.5 1998/10/20 08:06:37 pierre
|
|
* several memory corruptions due to double freemem solved
|
|
=> never use p^.loc.location:=p^.left^.loc.location;
|
|
+ finally I added now by default
|
|
that ra386dir translates global and unit symbols
|
|
+ added a first field in tsymtable and
|
|
a nextsym field in tsym
|
|
(this allows to obtain ordered type info for
|
|
records and objects in gdb !)
|
|
|
|
Revision 1.4 1998/10/14 15:56:42 pierre
|
|
* all references to comp suppressed for m68k
|
|
|
|
Revision 1.3 1998/10/12 12:20:47 pierre
|
|
+ added tai_const_symbol_offset
|
|
for r : pointer = @var.field;
|
|
* better message for different arg names on implementation
|
|
of function
|
|
|
|
Revision 1.2 1998/10/07 04:26:31 carl
|
|
+ initial rev of MPW asm writer
|
|
|
|
Revision 1.1.2.1 1998/10/07 01:48:59 carl
|
|
* initial revision of MPW asm writer
|
|
|
|
Revision 1.1.1.1.2.3 1998/09/14 18:56:26 carl
|
|
* alignment bugfix for bytes
|
|
|
|
Revision 1.1.1.1.2.2 1998/07/01 13:58:25 carl
|
|
?
|
|
|
|
Revision 1.1.1.1 1998/03/25 11:18:16 root
|
|
* Restored version
|
|
|
|
Revision 1.3 1998/03/22 12:45:37 florian
|
|
* changes of Carl-Eric to m68k target commit:
|
|
- wrong nodes because of the new string cg in intel, I had to create
|
|
this under m68k also ... had to work it out to fix potential alignment
|
|
problems --> this removes the crash of the m68k compiler.
|
|
- added absolute addressing in m68k assembler (required for Amiga startup)
|
|
- fixed alignment problems (because of byte return values, alignment
|
|
would not be always valid) -- is this ok if i change the offset if odd in
|
|
setfirsttemp ?? -- it seems ok...
|
|
|
|
Revision 1.2 1998/03/10 04:23:33 carl
|
|
- removed in because can cause range check errors under BP
|
|
|
|
Revision 1.1 1998/03/10 01:26:10 peter
|
|
+ new uniform names
|
|
|
|
} |