mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-05-31 05:02:34 +02:00
df0a126064
texceptionstatehandler class + llvm overrides
+ added FPC_DummyPotentialRaise routine that gets called at the begin and end
of try-blocks to be able to catch hardware exceptions to a limited extent
with LLVM
git-svn-id: branches/debug_eh@40418 -
131 lines
3.4 KiB
ObjectPascal
131 lines
3.4 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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aasmllvm;
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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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flandingpadstack: 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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{ returns true if there no more landing pads on the stack }
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function popexceptlabel(lab: TAsmLabel): boolean;
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function CurrExceptLabel: TAsmLabel;
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procedure pushlandingpad(pad: taillvm);
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procedure poppad;
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function currlandingpad: taillvm;
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end;
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implementation
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uses
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globtype,globals,verbose,systems,
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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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flandingpadstack:=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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if flandingpadstack.Count<>0 then
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internalerror(2018051901);
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flandingpadstack.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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function tllvmprocinfo.popexceptlabel(lab: TAsmLabel): boolean;
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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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result:=fexceptlabelstack.count=0;
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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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procedure tllvmprocinfo.pushlandingpad(pad: taillvm);
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begin
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flandingpadstack.add(pad);
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end;
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procedure tllvmprocinfo.poppad;
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begin
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if flandingpadstack.Count=0 then
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internalerror(2018051902);
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flandingpadstack.Count:=flandingpadstack.Count-1;
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end;
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function tllvmprocinfo.currlandingpad: taillvm;
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begin
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if flandingpadstack.Count=0 then
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internalerror(2018051903);
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result:=taillvm(flandingpadstack.last);
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end;
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begin
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if not assigned(cprocinfo) then
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begin
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writeln('Internalerror 2018052005');
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halt(1);
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end;
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cprocinfo:=tllvmprocinfo;
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end.
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