+ added 6502 rgcpu

compiler/mos6502/rgcpu.pas

@@ -0,0 +1,79 @@
+{
+    Copyright (c) 1998-2008 by Florian Klaempfl
+
+    This unit implements the MOS Technology 6502 specific class for the register
+    allocator
+
+    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.
+
+ ****************************************************************************
+}
+
+unit rgcpu;
+
+{$i fpcdefs.inc}
+
+  interface
+
+     uses
+       aasmbase,aasmtai,aasmdata,aasmcpu,aasmsym,
+       cgbase,cgutils,
+       cpubase,
+       rgobj;
+
+     type
+       trgcpu = class(trgobj)
+       end;
+
+       trgintcpu = class(trgcpu)
+         procedure add_cpu_interferences(p : tai);override;
+       end;
+
+  implementation
+
+    uses
+      verbose, cutils,
+      cgobj,
+      procinfo;
+
+
+    procedure trgintcpu.add_cpu_interferences(p : tai);
+      var
+        r : tsuperregister;
+      begin
+        inherited;
+        //if p.typ=ait_instruction then
+        //  begin
+        //    case taicpu(p).opcode of
+        //      A_CPI,
+        //      A_ANDI,
+        //      A_ORI,
+        //      A_SUBI,
+        //      A_SBCI,
+        //      A_LDI:
+        //        for r:=RS_R0 to RS_R15 do
+        //          add_edge(r,GetSupReg(taicpu(p).oper[0]^.reg));
+        //      A_MULS:
+        //        begin
+        //          for r:=RS_R0 to RS_R15 do
+        //            add_edge(r,GetSupReg(taicpu(p).oper[0]^.reg));
+        //          for r:=RS_R0 to RS_R15 do
+        //            add_edge(r,GetSupReg(taicpu(p).oper[1]^.reg));
+        //        end;
+        //    end;
+        //  end;
+      end;
+
+end.