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Groups > comp.lang.forth > #43769
| From | anton@mips.complang.tuwien.ac.at (Anton Ertl) |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: Question about checking the stack |
| Date | 2015-11-25 17:26 +0000 |
| Organization | Institut fuer Computersprachen, Technische Universitaet Wien |
| Message-ID | <2015Nov25.182654@mips.complang.tuwien.ac.at> (permalink) |
| References | <b2176cc4-7ef3-4ba8-9270-6fed74cf429f@googlegroups.com> <2015Nov25.135333@mips.complang.tuwien.ac.at> <87egfegggf.fsf@nightsong.com> |
Paul Rubin <no.email@nospam.invalid> writes:
>anton@mips.complang.tuwien.ac.at (Anton Ertl) writes:
>> Gforth's debugging engine "gforth" reports the error earlier...
>> How is that implemented? There is an unmapped page ...
>
>Interesting--for some reason I thought only gforth-fast did that
>and gforth(non-fast) actually had a dynamic check. How badly would
>an explicit check slow things down? I presume it's been tried.
We have not tried it, as we have a working (well, on decent OSs)
solution.
I have thought about doing extra loads in code that use stack caching
in order to produce an exception near the place of the logical
underflow; one could also do it with branches, but I expect that loads
are cheaper. If you have an analytic compiler, you probably can
optimize many of the extra loads away.
- anton
--
M. Anton Ertl http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
New standard: http://www.forth200x.org/forth200x.html
EuroForth 2015: http://www.rigwit.co.uk/EuroForth2015/
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Question about checking the stack Chris Curl <ccurl609@gmail.com> - 2015-11-24 22:31 -0800
Re: Question about checking the stack Lars Brinkhoff <lars.spam@nocrew.org> - 2015-11-25 07:46 +0100
Re: Question about checking the stack Chris Curl <ccurl609@gmail.com> - 2015-11-24 23:09 -0800
Re: Question about checking the stack Ron Aaron <rambamist@gmail.com> - 2015-11-25 09:16 +0200
Re: Question about checking the stack Paul Rubin <no.email@nospam.invalid> - 2015-11-24 23:19 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-11-24 22:05 -1000
Re: Question about checking the stack Paul Rubin <no.email@nospam.invalid> - 2015-11-25 13:17 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-11-25 13:58 -1000
Re: Question about checking the stack Paul Rubin <no.email@nospam.invalid> - 2015-11-25 18:00 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-11-25 17:44 -1000
Re: Question about checking the stack Paul Rubin <no.email@nospam.invalid> - 2015-11-25 23:05 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-11-25 21:38 -1000
Re: Question about checking the stack Ron Aaron <rambamist@gmail.com> - 2015-11-26 09:49 +0200
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-11-25 22:42 -1000
Re: Question about checking the stack anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-11-26 14:51 +0000
Re: Question about checking the stack Paul Rubin <no.email@nospam.invalid> - 2015-11-30 13:00 -0800
Re: Question about checking the stack hughaguilar96@gmail.com - 2015-11-30 21:54 -0800
Re: Question about checking the stack Julian Fondren <julian.fondren@gmail.com> - 2015-12-01 04:24 -0800
Re: Question about checking the stack Raimond Dragomir <raimond.dragomir@gmail.com> - 2015-12-01 05:07 -0800
Re: Question about checking the stack Julian Fondren <julian.fondren@gmail.com> - 2015-12-01 06:02 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-12-01 19:30 -1000
Re: Question about checking the stack Albert van der Horst <albert@spenarnc.xs4all.nl> - 2015-12-01 14:47 +0000
Re: Question about checking the stack Chris Curl <ccurl609@gmail.com> - 2015-12-01 11:56 -0800
Re: Question about checking the stack Alfred Singlestone <vitonis@gmail.com> - 2015-12-03 05:48 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-12-03 09:24 -1000
Re: Question about checking the stack Chris Curl <ccurl609@gmail.com> - 2015-12-03 21:10 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-12-03 20:52 -1000
Re: Question about checking the stack Chris Curl <ccurl609@gmail.com> - 2015-12-04 06:08 -0800
Re: Question about checking the stack Gerry Jackson <gerry@jackson9000.fsnet.co.uk> - 2015-12-01 20:32 +0000
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-12-01 19:32 -1000
Re: Question about checking the stack Lars Brinkhoff <lars.spam@nocrew.org> - 2015-12-01 08:18 +0100
Re: Question about checking the stack Alfred Singlestone <vitonis@gmail.com> - 2015-11-27 06:25 -0800
Re: Question about checking the stack Ron Aaron <rambamist@gmail.com> - 2015-11-28 17:55 +0200
Re: Question about checking the stack mhx@iae.nl - 2015-11-28 08:24 -0800
Re: Question about checking the stack Ron Aaron <rambamist@gmail.com> - 2015-11-28 20:54 +0200
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-11-28 11:32 -1000
Re: Question about checking the stack Paul Rubin <no.email@nospam.invalid> - 2015-11-28 19:17 -0800
Re: Question about checking the stack Ron Aaron <rambamist@gmail.com> - 2015-11-29 07:30 +0200
Re: Question about checking the stack Alfred Singlestone <vitonis@gmail.com> - 2015-11-29 09:41 -0800
Re: Question about checking the stack minforth@arcor.de - 2015-11-30 01:48 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-11-30 08:03 -1000
Re: Question about checking the stack hughaguilar96@gmail.com - 2015-11-28 19:09 -0800
Re: Question about checking the stack Paul Rubin <no.email@nospam.invalid> - 2015-11-26 00:03 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-11-25 22:49 -1000
Re: Question about checking the stack hughaguilar96@gmail.com - 2015-11-26 10:59 -0800
Re: Question about checking the stack franck.bensusan@gmail.com - 2015-11-25 21:03 -0800
Re: Question about checking the stack Alfred Singlestone <vitonis@gmail.com> - 2015-11-27 06:14 -0800
Re: Question about checking the stack "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-11-25 04:54 -0500
Re: Question about checking the stack François <francois.ganza@wanadoo.fr> - 2015-11-25 03:09 -0800
Re: Question about checking the stack anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-11-25 12:53 +0000
Re: Question about checking the stack Paul Rubin <no.email@nospam.invalid> - 2015-11-25 09:02 -0800
Re: Question about checking the stack Bernd Paysan <bernd.paysan@gmx.de> - 2015-11-25 18:53 +0100
Re: Question about checking the stack Paul Rubin <no.email@nospam.invalid> - 2015-11-25 12:01 -0800
Re: Question about checking the stack anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-11-25 17:26 +0000
Re: Question about checking the stack François <francois.ganza@wanadoo.fr> - 2015-11-25 13:51 -0800
Re: Question about checking the stack Chris Curl <ccurl609@gmail.com> - 2015-11-28 09:29 -0800
Re: Question about checking the stack Alfred Singlestone <vitonis@gmail.com> - 2015-11-28 12:03 -0800
Re: Question about checking the stack François <francois.ganza@wanadoo.fr> - 2015-12-01 06:15 -0800
Re: Question about checking the stack Chris Curl <ccurl609@gmail.com> - 2015-12-01 14:05 -0800
Re: Question about checking the stack "Elizabeth D. Rather" <erather@forth.com> - 2015-12-01 19:35 -1000
Re: Question about checking the stack dunno <dunno@dunno.dunno> - 2015-12-03 03:40 +0000
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