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{
Copyright (c) 2016 by Jonas Maebe, member of the Free Pascal
development team
Contains asmsymbol functionality that depends on symdef (to avoid creating
circular dependencies between symdef and aasmdata via aasmtai)
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 aasmdef;
{$i fpcdefs.inc}
interface
uses
globtype,
aasmbase,aasmdata,
symtype;
type
TAsmDataDef = class(TAsmData)
function DefineAsmSymbolByClass(symclass: TAsmSymbolClass; const s : TSymStr;_bind:TAsmSymBind;_typ:Tasmsymtype; def: tdef) : TAsmSymbol; override;
end;
implementation
uses
globals,cutils,systems,
aasmtai,aasmcnst,
symdef,
fmodule;
function TAsmDataDef.DefineAsmSymbolByClass(symclass: TAsmSymbolClass; const s: TSymStr; _bind: TAsmSymBind; _typ: Tasmsymtype; def: tdef): TAsmSymbol;
var
symind: tasmsymbol;
ptrdef: tdef;
tcb: ttai_typedconstbuilder;
wasdefined: boolean;
begin
result:=DefineAsmSymbolByClassBase(symclass,s,_bind,_typ,def,wasdefined);
{ define the indirect asmsymbol if necessary }
if not wasdefined and
(_bind in [AB_GLOBAL,AB_COMMON,AB_PRIVATE_EXTERN]) and
(_typ<>AT_DATA_NOINDIRECT) and
(((_typ=AT_DATA) and
(tf_supports_packages in target_info.flags) and
(target_info.system in systems_indirect_var_imports)
) or
(_typ=AT_DATA_FORCEINDIRECT)
) then
begin
ptrdef:=cpointerdef.getreusable(def);
symind:=current_asmdata.DefineAsmSymbol(s,AB_INDIRECT,AT_DATA,ptrdef);
tcb:=ctai_typedconstbuilder.create([tcalo_make_dead_strippable,tcalo_new_section]);
tcb.emit_tai(Tai_const.Create_sym_offset(result,0),ptrdef);
current_asmdata.AsmLists[al_indirectglobals].concatlist(tcb.get_final_asmlist(
symind,ptrdef,
sec_rodata,
lower(symind.name),
ptrdef.alignment));
tcb.free;
if (_typ=AT_DATA_FORCEINDIRECT) and not (target_info.system in systems_indirect_var_imports) then
current_module.add_public_asmsym(symind.name,AB_INDIRECT,AT_DATA);
end;
end;
begin
{ Do not overwrite if already set, by powerpc specific code for example }
if not assigned(casmdata) then
casmdata:=TAsmDataDef;
end.
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