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| From | Spam@ControlQ.com |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: Foreign language interface (was: On the importance of standards) |
| Date | 2013-06-14 15:28 -0400 |
| Organization | albasani.net |
| Message-ID | <alpine.BSF.2.00.1306141504020.36195@yoko.controlq.com> (permalink) |
| References | (3 earlier) <51af011e.1209188506@news.demon.co.uk> <229d55d3-00ab-44c2-b015-64b5ee748775@googlegroups.com> <2013Jun5.173514@mips.complang.tuwien.ac.at> <alpine.BSF.2.00.1306051539540.80715@yoko.controlq.com> <2013Jun14.165525@mips.complang.tuwien.ac.at> |
On Fri, 14 Jun 2013, Anton Ertl wrote: > Date: Fri, 14 Jun 2013 14:55:25 GMT > From: Anton Ertl <anton@mips.complang.tuwien.ac.at> > Newsgroups: comp.lang.forth > Subject: Re: Foreign language interface (was: On the importance of standards) > > Spam@ControlQ.com writes: >> One of the benefits of a "C" based forth on a hosted system is the ease >> with which an interface can be had. > > Not in my experience. The problem is that you cannot construct a call > with arbitrary arguments dynamically in C, except by creating it as > source code, compiling that, and dynamically linking the result (which > is what libcc.fs does). So it's not any easier in C than in assembly > language. Sure, for simple cases you can do it in either language, > but the general case is not easy in either language. > >> In the case of MiniForth, the only >> "code" words are "dlopen/dlsym/dlerror, and native". These open a shared >> library, search for an entry, and call it with the correct number of >> arguments. >> >> : load dlopen constant ; >> : entry dlsym dup 0 == if dlerror type cr then ; >> : code create , , does> dup @ swap 1 cells + @ native ; >> >> 0 load _libc >> >> _libc " getuid" entry 0 code uid >> _libc " getgid" entry 0 code gid >> _libc " time" entry 1 code tick >> _libc " clock" entry 0 code clock >> _libc " calloc" entry 2 code allocate >> _libc " free" entry 1 code free >> _libc " system" entry 1 code shell >> _libc " gettimeofday" entry 2 code tod >> _libc " getenv" entry 1 code env > > What if you have double arguments? Say, a C function f like this: > > double f(double, int, double, long long); > > How do you call that? > > - anton Anton, As MiniForth does not support either floating point or double numbers, the issue hasn't come up. On a system, where ints and pointers are effectively the same size this very simple interface works remarkably well, with the burden placed upon the user at define time to determine the number of arguments expected, and if necessary, to either allocate space or initialize their values at run time. Another distinct advantage that Miniforth has is the use of null terminated strings. I agree, however with your assessment that the general case is difficult, but this "trivial" interface can cover a lot of ground. It should also be pointed out that the native call has an upper limit of 10 arguments max, but that is easy to extend. Cheers, Rob.
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On the importance of standards Joshua Litt <jalitt@gmail.com> - 2013-06-03 22:42 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-03 23:59 -0700
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-04 06:16 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-10 20:51 +1000
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-11 22:03 -0700
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-11 22:32 -0700
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-12 13:06 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-13 22:34 +1000
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-14 19:09 -0400
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 19:02 +1000
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-23 13:55 -0400
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-13 22:08 +1000
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-13 23:28 +1000
Re: On the importance of standards Mark Wills <markrobertwills@yahoo.co.uk> - 2013-06-13 07:41 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 19:06 +1000
Re: On the importance of standards Brad Eckert <hwfwguy@gmail.com> - 2013-06-13 10:10 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 19:19 +1000
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-13 12:33 -0500
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 19:28 +1000
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-23 11:58 -0500
Re: On the importance of standards "Alex McDonald" <blog@rivadpm.com> - 2013-06-25 20:00 +0100
Re: On the importance of standards "Elizabeth D. Rather" <erather@forth.com> - 2013-06-13 07:55 -1000
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-13 12:35 -0700
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-13 23:18 +0200
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 19:41 +1000
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 19:37 +1000
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-13 12:00 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 21:41 +1000
Re: On the importance of standards "Alex McDonald" <blog@rivadpm.com> - 2013-06-25 20:08 +0100
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-14 19:16 -0400
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 20:33 +1000
Re: On the importance of standards Elizabeth D Rather <erather@forth.com> - 2013-06-03 21:32 -1000
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-04 01:33 -0700
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-04 01:36 -0700
Re: On the importance of standards albert@spenarnc.xs4all.nl (Albert van der Horst) - 2013-06-04 10:14 +0000
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-04 05:51 -0700
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-04 05:46 -0500
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-06 11:13 -0700
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-06 16:47 -0400
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-06 21:29 -0500
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-08 04:26 +1000
Re: On the importance of standards anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-04 12:03 +0000
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-04 06:00 -0700
Re: On the importance of standards anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-04 13:20 +0000
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-04 06:33 -0700
Re: On the importance of standards anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-04 13:40 +0000
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-04 07:42 -0700
Re: On the importance of standards Lars Brinkhoff <lars.spam@nocrew.org> - 2013-06-04 18:02 +0200
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-04 09:07 -0700
Re: On the importance of standards Lars Brinkhoff <lars.spam@nocrew.org> - 2013-06-04 19:16 +0200
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-04 14:27 -0400
TRAVERSE-WORDLIST (was Re: On the importance of standards) Alex McDonald <blog@rivadpm.com> - 2013-06-13 15:55 -0700
Re: TRAVERSE-WORDLIST Lars Brinkhoff <lars.spam@nocrew.org> - 2013-06-14 13:39 +0200
Re: TRAVERSE-WORDLIST Alex McDonald <blog@rivadpm.com> - 2013-06-14 09:06 -0700
Re: TRAVERSE-WORDLIST anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-17 17:05 +0000
Re: TRAVERSE-WORDLIST Alex McDonald <blog@rivadpm.com> - 2013-06-17 21:29 -0700
Re: On the importance of standards stephenXXX@mpeforth.com (Stephen Pelc) - 2013-06-04 13:51 +0000
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-05 01:24 +0200
Re: On the importance of standards stephenXXX@mpeforth.com (Stephen Pelc) - 2013-06-05 09:25 +0000
Re: On the importance of standards m.a.m.hendrix@tue.nl - 2013-06-05 04:31 -0700
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-05 05:41 -0700
Re: On the importance of standards mhx@iae.nl (Marcel Hendrix) - 2013-06-05 21:16 +0200
Re: On the importance of standards Alex McDonald <blog@rivadpm.com> - 2013-06-05 12:41 -0700
Re: On the importance of standards stephenXXX@mpeforth.com (Stephen Pelc) - 2013-06-05 12:53 +0000
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-06 04:20 +0200
Re: On the importance of standards m.a.m.hendrix@tue.nl - 2013-06-06 00:06 -0700
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-06 15:32 +0200
Re: On the importance of standards mhx@iae.nl (Marcel Hendrix) - 2013-06-06 17:09 +0200
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-06 22:44 +0200
Re: On the importance of standards Roelf Toxopeus <rt4all@notthis.hetnet.nl> - 2013-06-07 10:16 +0200
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-06 21:31 -0500
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-08 00:58 +0200
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-07 22:02 -0500
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-09 00:55 +0200
C interface (was: On the importance of standards) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-11 15:41 +0000
Re: C interface (was: On the importance of standards) Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-11 18:45 +0200
Re: C interface Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-12 08:05 -0500
Re: C interface anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-12 14:38 +0000
Re: C interface Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-12 20:15 +0200
Re: C interface Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-14 22:52 -0500
Re: C interface Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-12 13:27 -0500
Re: C interface anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-14 12:51 +0000
Re: C interface Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-14 22:47 -0500
Re: C interface anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-17 16:44 +0000
Re: C interface Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-17 12:46 -0500
Re: C interface anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-18 07:23 +0000
Re: C interface Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-18 04:06 -0500
Re: C interface m.a.m.hendrix@tue.nl - 2013-06-18 03:51 -0700
Re: C interface anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-18 16:10 +0000
Re: C interface Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-18 13:24 -0500
Foreign language interface (was: On the importance of standards) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-05 15:35 +0000
Re: Foreign language interface (was: On the importance of standards) stephenXXX@mpeforth.com (Stephen Pelc) - 2013-06-05 17:37 +0000
Re: Foreign language interface (was: On the importance of standards) Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-06 04:28 +0200
Re: Foreign language interface (was: On the importance of standards) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-14 15:23 +0000
Re: Foreign language interface (was: On the importance of standards) Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-15 14:33 +0200
Re: Foreign language interface (was: On the importance of standards) mhx@iae.nl (Marcel Hendrix) - 2013-06-05 21:32 +0200
Re: Foreign language interface (was: On the importance of standards) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-14 15:05 +0000
Re: Foreign language interface (was: On the importance of standards) mhx@iae.nl (Marcel Hendrix) - 2013-06-14 21:42 +0200
Re: Foreign language interface (was: On the importance of standards) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-17 16:53 +0000
Re: Foreign language interface (was: On the importance of standards) Spam@ControlQ.com - 2013-06-05 16:01 -0400
Re: Foreign language interface (was: On the importance of standards) anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2013-06-14 14:55 +0000
Re: Foreign language interface (was: On the importance of standards) Spam@ControlQ.com - 2013-06-14 15:28 -0400
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-06 04:14 +0200
Re: On the importance of standards glidedog@gmail.com - 2013-06-23 02:55 -0700
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-06 15:25 -0500
Re: On the importance of standards "Rod Pemberton" <do_not_have@notemailnotq.cpm> - 2013-06-04 17:48 -0400
Re: On the importance of standards visualforth@rocketmail.com - 2013-06-04 15:06 -0700
Re: On the importance of standards visualforth@rocketmail.com - 2013-06-04 15:40 -0700
Re: On the importance of standards Lars Brinkhoff <lars.spam@nocrew.org> - 2013-06-05 07:30 +0200
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-08 04:33 +1000
Re: On the importance of standards Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-06-05 02:09 +0000
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-04 19:32 -0700
Re: On the importance of standards Doug Hoffman <glidedog@gmail.com> - 2013-06-05 00:06 -0400
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-04 22:50 -0400
Re: On the importance of standards "Elizabeth D. Rather" <erather@forth.com> - 2013-06-04 19:02 -1000
Re: On the importance of standards Zbiggy <zbigniew2011REMOVE@gmail.REMOVE.com> - 2013-06-05 23:16 +0000
Re: On the importance of standards Elizabeth D Rather <erather@forth.com> - 2013-06-05 13:43 -1000
Re: On the importance of standards "Ed" <invalid@invalid.com> - 2013-06-06 11:14 +1000
Re: On the importance of standards Elizabeth D Rather <erather@forth.com> - 2013-06-05 15:27 -1000
Re: On the importance of standards "Ed" <invalid@invalid.com> - 2013-06-06 15:28 +1000
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-05 00:03 -0700
Re: On the importance of standards Joshua Litt <jalitt@gmail.com> - 2013-06-06 17:15 -0700
Re: On the importance of standards "Elizabeth D. Rather" <erather@forth.com> - 2013-06-06 14:45 -1000
Re: On the importance of standards Joshua Litt <jalitt@gmail.com> - 2013-06-06 19:24 -0700
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-06 21:38 -0500
Re: On the importance of standards Joshua Litt <jalitt@gmail.com> - 2013-06-07 14:39 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-09 00:57 +1000
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-08 10:44 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-09 06:11 +1000
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-08 14:47 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-10 00:03 +1000
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-09 15:00 -0400
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-09 12:26 -0700
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-09 15:41 -0400
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-09 13:11 -0700
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-09 13:14 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-10 18:41 +1000
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-09 17:09 -0400
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-10 18:35 +1000
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-10 16:04 +0200
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-15 01:08 -0700
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-10 20:13 +1000
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-10 11:35 -0400
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-10 17:37 -0500
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-10 18:46 -0400
Re: On the importance of standards Paul Rubin <no.email@nospam.invalid> - 2013-06-10 16:36 -0700
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-10 20:09 -0400
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-13 21:55 +1000
Re: On the importance of standards Andrew Haley <andrew29@littlepinkcloud.invalid> - 2013-06-11 09:56 -0500
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-11 18:40 +0200
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-11 22:36 -0400
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-15 14:30 +0200
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-15 19:20 -0400
Re: On the importance of standards Bernd Paysan <bernd.paysan@gmx.de> - 2013-06-16 22:37 +0200
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 17:14 +1000
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-13 21:33 +1000
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-15 13:21 -0400
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-23 18:58 +1000
Re: On the importance of standards rickman <gnuarm@gmail.com> - 2013-06-08 18:42 -0400
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-09 23:27 +1000
Re: On the importance of standards "WJ" <w_a_x_man@yahoo.com> - 2013-06-10 16:11 +0000
Re: On the importance of standards Steve <nospam275@gmail.com> - 2013-06-08 05:11 +1000
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