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{
Copyright (c) 2014 by Florian Klaempfl
Symbol table overrides for x86
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 symx86;
{$i fpcdefs.inc}
interface
uses
globtype,
symconst, symtype,symdef,symsym;
type
tx86pointerdef = class(tpointerdef)
protected
procedure ppuload_platform(ppufile: tcompilerppufile); override;
procedure ppuwrite_platform(ppufile: tcompilerppufile); override;
public
x86pointertyp : tx86pointertyp;
constructor create(def: tdef); override;
constructor createx86(def:tdef;x86typ:tx86pointertyp);virtual;
function size: asizeint; override;
function getcopy: tstoreddef; override;
function GetTypeName: string; override;
class function default_x86_data_pointer_type: tx86pointertyp; virtual;
end;
tx86pointerdefclass = class of tx86pointerdef;
implementation
uses
globals, verbose;
{****************************************************************************
tx86pointerdef
****************************************************************************}
procedure tx86pointerdef.ppuload_platform(ppufile: tcompilerppufile);
begin
inherited;
x86pointertyp:=tx86pointertyp(ppufile.getbyte);
end;
procedure tx86pointerdef.ppuwrite_platform(ppufile: tcompilerppufile);
begin
inherited;
ppufile.putbyte(byte(x86pointertyp));
end;
constructor tx86pointerdef.create(def: tdef);
begin
inherited create(def);
x86pointertyp := default_x86_data_pointer_type;
end;
constructor tx86pointerdef.createx86(def: tdef; x86typ: tx86pointertyp);
begin
tabstractpointerdef(self).create(pointerdef,def);
x86pointertyp := x86typ;
has_pointer_math:=cs_pointermath in current_settings.localswitches;
end;
function tx86pointerdef.size: asizeint;
begin
if x86pointertyp in [x86pt_far,x86pt_huge] then
result:=sizeof(pint)+2
else
result:=inherited;
end;
function tx86pointerdef.getcopy: tstoreddef;
begin
result:=inherited;
tx86pointerdef(result).x86pointertyp:=x86pointertyp;
end;
function tx86pointerdef.GetTypeName: string;
begin
result:=inherited;
if x86pointertyp<>default_x86_data_pointer_type then
begin
case x86pointertyp of
x86pt_near:
result:=result+';near';
x86pt_near_cs:
result:=result+';near ''CS''';
x86pt_near_ds:
result:=result+';near ''DS''';
x86pt_near_ss:
result:=result+';near ''SS''';
x86pt_near_es:
result:=result+';near ''ES''';
x86pt_near_fs:
result:=result+';near ''FS''';
x86pt_near_gs:
result:=result+';near ''GS''';
x86pt_far:
result:=result+';far';
x86pt_huge:
result:=result+';huge';
else
internalerror(2013050301);
end;
end;
end;
class function tx86pointerdef.default_x86_data_pointer_type: tx86pointertyp;
begin
result:=x86pt_near;
end;
end.
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