+ initial revision

compiler/ncon.pas

@@ -0,0 +1,178 @@
+{
+    $Id$
+    Copyright (c) 1998-2000 by Florian Klaempfl
+
+    Type checking and register allocation for constants
+
+    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 ncon;
+interface
+
+    uses
+      node;
+
+    type
+       trealconstnode = class(tnode)
+          value_real : bestreal;
+          lab_real : pasmlabel;
+          // !!!!!!! needs at least create, getcopy
+          function pass_1 : tnode;override;
+       end;
+
+       tfixconstnode = class(tnode)
+          value_fix: longint;
+          // !!!!!!! needs at least create, getcopy
+          function pass_1 : tnode;override;
+       end;
+
+       tordconstnode = class(tnode)
+          value : TConstExprInt;
+          // !!!!!!! needs at least create, getcopy
+          function pass_1 : tnode;override;
+       end;
+
+       tpointerconstnode = class(tnode)
+          value : TPointerOrd;
+          // !!!!!!! needs at least create, getcopy
+          function pass_1 : tnode;override;
+       end;
+
+       tstringconstnode = class(tnode)
+          value_str : pchar;
+          length : longint;
+          lab_str : pasmlabel;
+          stringtype : tstringtype
+          // !!!!!!! needs at least create, getcopy, destroy
+          function pass_1 : tnode;override;
+       end;
+
+       tsetconstnode = class(tnode)
+          value_set : pconstset;
+          lab_set : pasmlabel
+          // !!!!!!! needs at least create,  getcopy
+          function pass_1 : tnode;override;
+       end;
+
+       tnilnode = class(tnode)
+          // !!!!!!! needs at least create
+          function pass_1 : tnode;override;
+       end;
+
+implementation
+
+    uses
+      cobjects,verbose,globals,systems,
+      symconst,symtable,aasm,types,
+      hcodegen,pass_1,cpubase;
+
+{*****************************************************************************
+                             TREALCONSTNODE
+*****************************************************************************}
+
+    function tpointerconstnode.pass_1 : tnode;
+      begin
+         if (value_real=1.0) or (value_real=0.0) then
+           begin
+              location.loc:=LOC_FPU;
+              registersfpu:=1;
+           end
+         else
+           location.loc:=LOC_MEM;
+      end;
+
+
+{*****************************************************************************
+                             TFIXCONSTNODE
+*****************************************************************************}
+
+    function tpointerconstnode.pass_1 : tnode;
+      begin
+         location.loc:=LOC_MEM;
+      end;
+
+
+{*****************************************************************************
+                              TORDCONSTNODE
+*****************************************************************************}
+
+    function tpointerconstnode.pass_1 : tnode;
+      begin
+         location.loc:=LOC_MEM;
+      end;
+
+
+{*****************************************************************************
+                            TPOINTERCONSTNODE
+*****************************************************************************}
+
+    function tpointerconstnode.pass_1 : tnode;
+      begin
+         location.loc:=LOC_MEM;
+      end;
+
+
+{*****************************************************************************
+                             TSTRINGCONSTNODE
+*****************************************************************************}
+
+    function tstringconstnode.pass_1 : tnode;
+      begin
+{        if cs_ansistrings in aktlocalswitches then
+          resulttype:=cansistringdef
+         else
+          resulttype:=cshortstringdef; }
+        case stringtype of
+          st_shortstring :
+            resulttype:=cshortstringdef;
+          st_ansistring :
+            resulttype:=cansistringdef;
+          st_widestring :
+            resulttype:=cwidestringdef;
+          st_longstring :
+            resulttype:=clongstringdef;
+        end;
+        location.loc:=LOC_MEM;
+      end;
+
+
+{*****************************************************************************
+                             TSETCONSTNODE
+*****************************************************************************}
+
+    function tsetconstnode.pass_1 : tnode;
+      begin
+         location.loc:=LOC_MEM;
+      end;
+
+{*****************************************************************************
+                               TNILNODE
+*****************************************************************************}
+
+    function tnilnode.pass_1 : tnode;
+      begin
+        resulttype:=voidpointerdef;
+        location.loc:=LOC_MEM;
+      end;
+
+end.
+{
+  $Log$
+  Revision 1.1  2000-09-22 21:44:48  florian
+    + initial revision
+
+}