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