Date: Wed, 2 Sep 1998 08:32:31 +0100 (BST) From: Doug Rabson <dfr@nlsystems.com> To: Chuck Robey <chuckr@glue.umd.edu> Cc: Brian Feldman <green@unixhelp.org>, current@FreeBSD.ORG Subject: Re: E-day problems: rtld-elf dlsym() broken? Message-ID: <Pine.BSF.4.01.9809020831010.360-100000@herring.nlsystems.com> In-Reply-To: <Pine.BSF.4.00.9809011733280.353-100000@picnic.mat.net>
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On Tue, 1 Sep 1998, Chuck Robey wrote: > > On Tue, 1 Sep 1998, Doug Rabson wrote: > > > On Tue, 1 Sep 1998, Brian Feldman wrote: > > > > > As a start, I'd like to say great job to John Birrell and everyone else > > > involved, going to ELF worked almost without a hitch, I'm impressed! But > > > there is a problem now: dlsym, for me, seems to have stopped working. > > > Entirely.... Returning NULL always it seems. I've attached a program (yes, > > > it's a start on a basic debugger, I'm implementing rtld functions first) > > > which should show the problem to anyone interested. > > > > I suggest that you build rtld-elf with DEBUG_FLAGS=-g and set a breakpoint > > in dlsym(). > > Seeing this about dlsym (which always existed in ld.so) I figured the > elf one would be in ld.so-elf (whatever the name is). Another tought > occurred, tho: Will those functions finally be available for statically > linked elf images? The exact same issues exist for static elf images as for static a.out images. The linker doesn't put a dynamic symbol table into the static image so it can't override symbols defined in shared libraries. This is a problem for libc fundamentals like malloc and stdio. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 951 1891 Fax: +44 181 381 1039 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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