mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 02:39:40 +01:00
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
{
|
|
Copyright (c) 2016 by Jonas Maebe
|
|
|
|
Generate assembler for nodes that influence the flow
|
|
|
|
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 ncgnstfl;
|
|
|
|
{$i fpcdefs.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
node,
|
|
nflw, ncgflw;
|
|
|
|
type
|
|
tcgnestgotonode = class(tcggotonode)
|
|
function pass_typecheck: tnode; override;
|
|
end;
|
|
|
|
implementation
|
|
|
|
uses
|
|
globtype,globals,
|
|
nld,
|
|
symdef,symsym,symcreat;
|
|
|
|
|
|
function tcgnestgotonode.pass_typecheck: tnode;
|
|
begin
|
|
result:=inherited;
|
|
if (m_non_local_goto in current_settings.modeswitches) and
|
|
assigned(labelsym.jumpbuf) then
|
|
begin
|
|
{ we will access this jumpbuf local variable from a nested context,
|
|
but the loadnode to do so only gets created in pass_1. This is too
|
|
late for us to detect that it should have been added to the
|
|
parentfpstruct, so temporarily create and typecheckpass a load
|
|
node for the jumpbuf here (so that it can be added now) }
|
|
with cloadnode.create(labelsym.jumpbuf,labelsym.jumpbuf.Owner) do
|
|
begin
|
|
pass_typecheck;
|
|
free
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
begin
|
|
cgotonode:=tcgnestgotonode;
|
|
end.
|
|
|