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