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b6efcb9105
referred by invoke instructions in exception catching blocks
o for now we won't actually use ABI-compliant exception handling, but we
need invoke/landingpad combinations for LLVM's control flow analyses to
correctly handle code involving exception handling
git-svn-id: branches/debug_eh@40401 -
94 lines
2.3 KiB
ObjectPascal
94 lines
2.3 KiB
ObjectPascal
{
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Copyright (c) 2016 by Jonas Maebe
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Information about the current procedure that is being compiled
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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 llvmpi;
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{$i fpcdefs.inc}
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interface
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uses
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cclasses,
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aasmbase,
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procinfo,
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cpupi;
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type
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tllvmprocinfo = class(tcpuprocinfo)
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private
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fexceptlabelstack: tfplist;
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public
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constructor create(aparent: tprocinfo); override;
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destructor destroy; override;
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procedure pushexceptlabel(lab: TAsmLabel);
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procedure popexceptlabel(lab: TAsmLabel);
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function CurrExceptLabel: TAsmLabel; inline;
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end;
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implementation
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uses
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globtype,verbose,
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symtable;
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constructor tllvmprocinfo.create(aparent: tprocinfo);
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begin
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inherited;
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fexceptlabelstack:=tfplist.create;
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end;
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destructor tllvmprocinfo.destroy;
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begin
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if fexceptlabelstack.Count<>0 then
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Internalerror(2016121301);
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fexceptlabelstack.free;
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inherited;
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end;
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procedure tllvmprocinfo.pushexceptlabel(lab: TAsmLabel);
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begin
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fexceptlabelstack.add(lab);
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end;
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procedure tllvmprocinfo.popexceptlabel(lab: TAsmLabel);
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begin
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if CurrExceptLabel<>lab then
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internalerror(2016121302);
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fexceptlabelstack.count:=fexceptlabelstack.count-1;
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end;
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function tllvmprocinfo.CurrExceptLabel: TAsmLabel; inline;
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begin
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result:=TAsmLabel(fexceptlabelstack.last);
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if not assigned(result) then
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internalerror(2016121703);
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end;
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begin
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cprocinfo:=tllvmprocinfo;
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end.
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