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48ef33a8b3
o ensure that the label's local "jumpbuf" variable gets moved to the
parentfpstruct soon enough
o don't generate global symbols for interprocedural labels: they're not
necessary if they are only used via setjmp/longjmp (all references are
local in that case), and if they are referenced via an assembler block
then we'll have to handle them by passing a blockaddress() expression
as parameter to that assembler block (which does not require a global
symbol, but which is not yet implemented)
git-svn-id: trunk@34946 -
69 lines
2.0 KiB
ObjectPascal
69 lines
2.0 KiB
ObjectPascal
{
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Copyright (c) 2016 by Jonas Maebe
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Generate assembler for nodes that influence the flow
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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 ncgnstfl;
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{$i fpcdefs.inc}
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interface
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uses
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node,
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nflw, ncgflw;
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type
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tcgnestgotonode = class(tcggotonode)
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function pass_typecheck: tnode; override;
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end;
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implementation
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uses
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globtype,globals,
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nld,
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symdef,symsym,symcreat;
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function tcgnestgotonode.pass_typecheck: tnode;
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begin
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result:=inherited;
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if (m_non_local_goto in current_settings.modeswitches) and
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assigned(labelsym.jumpbuf) then
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begin
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{ we will access this jumpbuf local variable from a nested context,
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but the loadnode to do so only gets created in pass_1. This is too
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late for us to detect that it should have been added to the
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parentfpstruct, so temporarily create and typecheckpass a load
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node for the jumpbuf here (so that it can be added now) }
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with cloadnode.create(labelsym.jumpbuf,labelsym.jumpbuf.Owner) do
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begin
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pass_typecheck;
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free
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end;
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end;
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end;
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begin
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cgotonode:=tcgnestgotonode;
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end.
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