Date: Sun, 4 Oct 1998 14:51:55 -0400 (EDT) From: Chuck Robey <chuckr@mat.net> To: Brian Feldman <green@zone.syracuse.net> Cc: Martin Cracauer <cracauer@cons.org>, Terry Lambert <tlambert@primenet.com>, nate@mt.sri.com, osa@etrust.ru, current@FreeBSD.ORG Subject: Re: What about jdk-1.1.6 for FreeBSD-3.0-ELF ? Message-ID: <Pine.BSF.4.02A.9810041450160.362-100000@picnic.mat.net> In-Reply-To: <Pine.BSF.4.04.9810041320510.16118-100000@zone.syracuse.net>
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On Sun, 4 Oct 1998, Brian Feldman wrote: > I do understand more than you think I do. I know about kernel- and > user-land, how system calls work, etc. What I meant is: in a dynamic > library, there should be NO raw __syscall/syscall'ing, the choices of howt > o do system calls should be in the system libc. The only real > incompatibilities in the actual libraries would be compiler-specific, or > libc-specific (those *64 calls etc, for solaris only), like with > libgcc.a-compiled libs on non-GNU-cc-systems. The ACTUAL function calls, > as defined by ELF, that call functions, defined by ANSI, should not in any > differ except across architectures. I didn't mean to insult (if I unintentionally have) but I did ask you to take this offline, so as not to drag the list thru it. > > -Brian Feldman > > On Sun, 4 Oct 1998, Chuck Robey wrote: > > > On Sun, 4 Oct 1998, Brian Feldman wrote: > > > > > Cheers, > > > Brian Feldman > > > > > > On Sun, 4 Oct 1998, Martin Cracauer wrote: > > > > > > > In <199810040411.VAA25038@usr06.primenet.com>, Terry Lambert wrote: > > > > > > I'm taking from this that not having a Motif lib in elf is dragging > > > > > > things back. I'm totally non-suprised (I've been nagging XiG to get by > > > > > > personal favorite one done for a while now). I would hope that, when > > > > > > someone _does_ find a vendor of Motif in ELF, there will be a quick > > > > > > announcement on the lists ... don't consider it advertising, we _need_ > > > > > > this. > > > > > > > > > > Someone needs to flush $15 on the "free" Solaris and/or UnixWare CDROM, > > > > > which has an ELF Motif library on it. > > > > > > > > And this library won't use any system or libc calls that might be > > > > incompatible in FreeBSD? > > > > > > I don't see why a system call should be incompatible since being a shared > > > library, the system call is just a definition of a link to the true libc > > > symbol. > > > > That's because of two things, the semantics of the libc call, and the > > way that OS calls are done. In the semantics, I'm referring both to > > what precisely the call does, which varies sufficiently to be a major > > headache, and the number/order of arguments. It's not standard, Brian. > > > > The other thing, about the way that OS type calls (like, say, unlink) > > which the libc does not in itself handle are done. The libc can't > > unlink a file, it has to pass the request to the kernel, and it does > > that by using an integer numbered thing called a syscall, where the > > kernel recognizes what's being asked of it by the number of the call, > > and never sees "unlink". If the libc wrapper for your call thinks the > > number for the call is one thing, but the kernel thinks it's another, > > boom. > > > > It's not just "a definition of a link to the true libc" at all. > > > > ----------------------------+----------------------------------------------- > > Chuck Robey | Interests include any kind of voice or data > > chuckr@glue.umd.edu | communications topic, C programming, and Unix. > > 213 Lakeside Drive Apt T-1 | > > Greenbelt, MD 20770 | I run Journey2 and picnic (FreeBSD-current) > > (301) 220-2114 | and jaunt (NetBSD). > > ----------------------------+----------------------------------------------- > > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-current" in the body of the message > > > > > ----------------------------+----------------------------------------------- Chuck Robey | Interests include any kind of voice or data chuckr@glue.umd.edu | communications topic, C programming, and Unix. 213 Lakeside Drive Apt T-1 | Greenbelt, MD 20770 | I run Journey2 and picnic (FreeBSD-current) (301) 220-2114 | and jaunt (NetBSD). ----------------------------+----------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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