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and initialise global variables that are wrapped (records, arrays) in those sections o check whether pd.localst is assigned in dbgjasm, because it's not for the unit initialisation routine o moved insertbssdata() from ncgutil to ngenutil and override it njvmutil (it does nothing in the latter, since global variables are added as fields to the class representing the unit; the initialisation is done in gen_initialize_code() in thlcgjvm) o added force_init() and force_final() methods to ngenutil, so that targets can force init/final routines separate from the regular managed types infrastructure (used by JVM for forcing an init section in case of records/arrays) git-svn-id: branches/jvmbackend@18460 -
293 lines
9.7 KiB
ObjectPascal
293 lines
9.7 KiB
ObjectPascal
{
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Copyright (c) 1998-20011 by Florian Klaempfl
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Generic version of some node tree helper routines that can be overridden
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by cpu-specific versions
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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 ngenutil;
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{$i fpcdefs.inc}
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interface
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uses
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node,symsym;
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type
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tnodeutils = class
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class function call_fail_node:tnode; virtual;
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class function initialize_data_node(p:tnode):tnode; virtual;
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class function finalize_data_node(p:tnode):tnode; virtual;
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{ returns true if the unit requires an initialisation section (e.g.,
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to force class constructors for the JVM target to initialise global
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records/arrays) }
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class function force_init: boolean; virtual;
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{ idem for finalization }
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class function force_final: boolean; virtual;
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class procedure insertbssdata(sym : tstaticvarsym); virtual;
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end;
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tnodeutilsclass = class of tnodeutils;
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const
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cnodeutils: tnodeutilsclass = tnodeutils;
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implementation
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uses
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verbose,globtype,globals,cutils,constexp,
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scanner,systems,procinfo,
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aasmbase,aasmdata,aasmtai,
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symconst,symtype,symdef,symbase,symtable,defutil,
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nadd,nbas,ncal,ncnv,ncon,nflw,nld,nmem,nobj,nutils,
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pass_1;
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class function tnodeutils.call_fail_node:tnode;
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var
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para : tcallparanode;
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newstatement : tstatementnode;
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srsym : tsym;
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begin
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result:=internalstatements(newstatement);
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{ call fail helper and exit normal }
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if is_class(current_structdef) then
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begin
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srsym:=search_struct_member(current_structdef,'FREEINSTANCE');
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if assigned(srsym) and
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(srsym.typ=procsym) then
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begin
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{ if self<>0 and vmt<>0 then freeinstance }
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addstatement(newstatement,cifnode.create(
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caddnode.create(andn,
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caddnode.create(unequaln,
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load_self_pointer_node,
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cnilnode.create),
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caddnode.create(unequaln,
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load_vmt_pointer_node,
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cnilnode.create)),
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ccallnode.create(nil,tprocsym(srsym),srsym.owner,load_self_node,[]),
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nil));
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end
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else
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internalerror(200305108);
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end
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else
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if is_object(current_structdef) then
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begin
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{ parameter 3 : vmt_offset }
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{ parameter 2 : pointer to vmt }
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{ parameter 1 : self pointer }
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para:=ccallparanode.create(
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cordconstnode.create(tobjectdef(current_structdef).vmt_offset,s32inttype,false),
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ccallparanode.create(
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ctypeconvnode.create_internal(
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load_vmt_pointer_node,
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voidpointertype),
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ccallparanode.create(
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ctypeconvnode.create_internal(
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load_self_pointer_node,
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voidpointertype),
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nil)));
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addstatement(newstatement,
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ccallnode.createintern('fpc_help_fail',para));
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end
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else
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internalerror(200305132);
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{ self:=nil }
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addstatement(newstatement,cassignmentnode.create(
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load_self_pointer_node,
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cnilnode.create));
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{ exit }
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addstatement(newstatement,cexitnode.create(nil));
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end;
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class function tnodeutils.initialize_data_node(p:tnode):tnode;
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begin
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if not assigned(p.resultdef) then
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typecheckpass(p);
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if is_ansistring(p.resultdef) or
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is_wide_or_unicode_string(p.resultdef) or
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is_interfacecom_or_dispinterface(p.resultdef) or
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is_dynamic_array(p.resultdef) then
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begin
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result:=cassignmentnode.create(
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ctypeconvnode.create_internal(p,voidpointertype),
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cnilnode.create
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);
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end
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else
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begin
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result:=ccallnode.createintern('fpc_initialize',
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ccallparanode.create(
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caddrnode.create_internal(
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crttinode.create(
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tstoreddef(p.resultdef),initrtti,rdt_normal)),
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ccallparanode.create(
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caddrnode.create_internal(p),
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nil)));
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end;
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end;
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class function tnodeutils.finalize_data_node(p:tnode):tnode;
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var
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newstatement : tstatementnode;
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begin
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if not assigned(p.resultdef) then
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typecheckpass(p);
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if is_ansistring(p.resultdef) then
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begin
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result:=internalstatements(newstatement);
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addstatement(newstatement,ccallnode.createintern('fpc_ansistr_decr_ref',
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ccallparanode.create(
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ctypeconvnode.create_internal(p,voidpointertype),
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nil)));
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addstatement(newstatement,cassignmentnode.create(
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ctypeconvnode.create_internal(p.getcopy,voidpointertype),
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cnilnode.create
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));
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end
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else if is_widestring(p.resultdef) then
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begin
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result:=internalstatements(newstatement);
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addstatement(newstatement,ccallnode.createintern('fpc_widestr_decr_ref',
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ccallparanode.create(
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ctypeconvnode.create_internal(p,voidpointertype),
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nil)));
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addstatement(newstatement,cassignmentnode.create(
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ctypeconvnode.create_internal(p.getcopy,voidpointertype),
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cnilnode.create
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));
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end
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else if is_unicodestring(p.resultdef) then
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begin
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result:=internalstatements(newstatement);
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addstatement(newstatement,ccallnode.createintern('fpc_unicodestr_decr_ref',
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ccallparanode.create(
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ctypeconvnode.create_internal(p,voidpointertype),
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nil)));
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addstatement(newstatement,cassignmentnode.create(
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ctypeconvnode.create_internal(p.getcopy,voidpointertype),
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cnilnode.create
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));
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end
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else if is_interfacecom_or_dispinterface(p.resultdef) then
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begin
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result:=internalstatements(newstatement);
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addstatement(newstatement,ccallnode.createintern('fpc_intf_decr_ref',
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ccallparanode.create(
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ctypeconvnode.create_internal(p,voidpointertype),
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nil)));
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addstatement(newstatement,cassignmentnode.create(
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ctypeconvnode.create_internal(p.getcopy,voidpointertype),
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cnilnode.create
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));
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end
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else
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result:=ccallnode.createintern('fpc_finalize',
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ccallparanode.create(
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caddrnode.create_internal(
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crttinode.create(
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tstoreddef(p.resultdef),initrtti,rdt_normal)),
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ccallparanode.create(
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caddrnode.create_internal(p),
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nil)));
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end;
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class function tnodeutils.force_init: boolean;
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begin
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result:=false;
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end;
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class function tnodeutils.force_final: boolean;
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begin
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result:=false;
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end;
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class procedure tnodeutils.insertbssdata(sym: tstaticvarsym);
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var
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l : asizeint;
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varalign : shortint;
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storefilepos : tfileposinfo;
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list : TAsmList;
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sectype : TAsmSectiontype;
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begin
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storefilepos:=current_filepos;
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current_filepos:=sym.fileinfo;
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l:=sym.getsize;
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varalign:=sym.vardef.alignment;
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if (varalign=0) then
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varalign:=var_align_size(l)
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else
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varalign:=var_align(varalign);
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if tf_section_threadvars in target_info.flags then
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begin
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if (vo_is_thread_var in sym.varoptions) then
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begin
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list:=current_asmdata.asmlists[al_threadvars];
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sectype:=sec_threadvar;
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end
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else
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begin
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list:=current_asmdata.asmlists[al_globals];
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sectype:=sec_bss;
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end;
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end
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else
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begin
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if (vo_is_thread_var in sym.varoptions) then
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begin
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inc(l,sizeof(pint));
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{ it doesn't help to set a higher alignment, as }
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{ the first sizeof(pint) bytes field will offset }
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{ everything anyway }
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varalign:=sizeof(pint);
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end;
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list:=current_asmdata.asmlists[al_globals];
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sectype:=sec_bss;
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end;
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maybe_new_object_file(list);
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if vo_has_section in sym.varoptions then
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new_section(list,sec_user,sym.section,varalign)
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else
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new_section(list,sectype,lower(sym.mangledname),varalign);
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if (sym.owner.symtabletype=globalsymtable) or
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create_smartlink or
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DLLSource or
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(assigned(current_procinfo) and
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(po_inline in current_procinfo.procdef.procoptions)) or
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(vo_is_public in sym.varoptions) then
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list.concat(Tai_datablock.create_global(sym.mangledname,l))
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else
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list.concat(Tai_datablock.create(sym.mangledname,l));
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current_filepos:=storefilepos;
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end;
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end.
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