Date: Sat, 6 Feb 1999 21:08:14 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: jdp@polstra.com (John Polstra) Cc: tlambert@primenet.com, mjacob@feral.com, alpha@FreeBSD.ORG Subject: Re: Could somebody please test this patch? Message-ID: <199902062108.OAA17997@usr02.primenet.com> In-Reply-To: <XFMail.990205170159.jdp@polstra.com> from "John Polstra" at Feb 5, 99 05:01:59 pm
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> > which gets mapped to a specific address for Alpha binaries by the > > image activator, > > Fine, then _tell_ me what the specific address is supposed to be, > if there even really is one. I know there's a specific address in > SVR4/i386, but as yet you've given me no reason to think the address > is wired down on the Alpha. Just saying it's wired down doesn't do > anybody a bit of good if you don't state what the address is supposed > to be. Do you have a copy of DEC UNIX with a compiler? Write a program: main() { for(;;) { sleep(1000); } } And then examine the memory mappings for it. I can't really *prove* that the thing *never* maps it to a different location, but I've put loops like that into much more complex programs and not had it move around. > > not the crt0.o (that's why you can dlopen from static executable on > > an Alpha; same for SVR4 and Solaris, for that matter). > > As I've told you at least four times in the mailing lists, that is > misinformation. I know from first-hand experience (and from man > pages) that you can't use dlopen in static executables under SVR4. > And I and others have quoted every variety of Solaris man page to you, > which specifically say you can't do it. I wish you'd quit spreading > it around that you can, because it's utterly false. Ugh. There isn't a static "libdl". You're right. I screwed up and assumed that the libdl was statically linked. Hmmm... you *can* use mmap and libelf to get the offsets, right? So it is possible to support loadable code modules in a static binary, it's just an implementation decision that that's not how dlopen itself is implemented. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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