From: Richard Sandiford <rsandifo@redhat.com>
To: "Bradley D. LaRonde" <brad@laronde.org>
Cc: <uclibc@uclibc.org>, <linux-mips@linux-mips.org>
Subject: Re: uclibc mips ld.so and undefined symbols with nonzero symbol table entry st_value
Date: Mon, 10 May 2004 19:21:04 +0100 [thread overview]
Message-ID: <878yg0m9db.fsf@redhat.com> (raw)
In-Reply-To: <00e201c436b9$5fa0f450$8d01010a@prefect> (Bradley D. LaRonde's message of "Mon, 10 May 2004 14:05:27 -0400")
"Bradley D. LaRonde" <brad@laronde.org> writes:
> Even though it is pointing libdl to the libpthread stub for malloc, should
> it crash?
Yeah. When you call a stub, $gp must already be set to the owning
object's _gp. That's how the dynamic loader knows which GOT to change.
In your case, libdl will be calling libpthread's stub with $gp set to
libdl's _gp. The dynamic loader will therefore end up trying to change
libdl's GOT, not libpthread's.
Richard
WARNING: multiple messages have this Message-ID (diff)
From: Richard Sandiford <rsandifo@redhat.com>
To: "Bradley D. LaRonde" <brad@laronde.org>
Cc: uclibc@uclibc.org, linux-mips@linux-mips.org
Subject: Re: uclibc mips ld.so and undefined symbols with nonzero symbol table entry st_value
Date: Mon, 10 May 2004 19:21:04 +0100 [thread overview]
Message-ID: <878yg0m9db.fsf@redhat.com> (raw)
Message-ID: <20040510182104.txii3rkOFrRzbYYXi-k9TiAqU-TIHuC9IWxKL9xXNec@z> (raw)
In-Reply-To: <00e201c436b9$5fa0f450$8d01010a@prefect> (Bradley D. LaRonde's message of "Mon, 10 May 2004 14:05:27 -0400")
"Bradley D. LaRonde" <brad@laronde.org> writes:
> Even though it is pointing libdl to the libpthread stub for malloc, should
> it crash?
Yeah. When you call a stub, $gp must already be set to the owning
object's _gp. That's how the dynamic loader knows which GOT to change.
In your case, libdl will be calling libpthread's stub with $gp set to
libdl's _gp. The dynamic loader will therefore end up trying to change
libdl's GOT, not libpthread's.
Richard
next prev parent reply other threads:[~2004-05-10 18:21 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-03 21:25 uclibc mips ld.so and undefined symbols with nonzero symbol table entry st_value Bradley D. LaRonde
2004-05-03 21:25 ` Bradley D. LaRonde
2004-05-09 13:14 ` Richard Sandiford
2004-05-09 13:14 ` Richard Sandiford
2004-05-09 20:52 ` Bradley D. LaRonde
2004-05-09 20:52 ` Bradley D. LaRonde
2004-05-10 7:40 ` Richard Sandiford
2004-05-10 7:40 ` Richard Sandiford
2004-05-10 18:05 ` Bradley D. LaRonde
2004-05-10 18:05 ` Bradley D. LaRonde
2004-05-10 18:21 ` Richard Sandiford [this message]
2004-05-10 18:21 ` Richard Sandiford
2004-05-10 20:36 ` Bradley D. LaRonde
2004-05-10 20:36 ` Bradley D. LaRonde
2004-05-10 20:41 ` Richard Sandiford
2004-05-10 20:41 ` Richard Sandiford
2004-05-10 20:44 ` Richard Sandiford
2004-05-10 20:44 ` Richard Sandiford
2004-05-11 3:39 ` Bradley D. LaRonde
2004-05-11 3:39 ` Bradley D. LaRonde
2004-05-11 5:48 ` [uClibc] Re: uclibc mips ld.so and undefined symbols with nonzerosymbol " Joakim Tjernlund
2004-05-11 5:48 ` Joakim Tjernlund
2004-05-11 14:03 ` uclibc mips ld.so and undefined symbols with nonzero symbol " Daniel Jacobowitz
2004-05-11 14:21 ` Bradley D. LaRonde
2004-05-11 14:21 ` Bradley D. LaRonde
2004-05-11 14:23 ` Daniel Jacobowitz
2004-05-11 16:33 ` [uClibc] Re: uclibc mips ld.so and undefined symbols with nonzerosymbol " Joakim Tjernlund
2004-05-11 16:33 ` Joakim Tjernlund
2004-05-11 16:55 ` Bradley D. LaRonde
2004-05-11 16:55 ` Bradley D. LaRonde
2004-05-11 21:50 ` Joakim Tjernlund
2004-05-11 21:50 ` Joakim Tjernlund
2004-05-10 12:21 ` Joakim Tjernlund
2004-05-10 12:21 ` Joakim Tjernlund
2004-05-10 12:36 ` Joakim Tjernlund
2004-05-10 12:36 ` Joakim Tjernlund
2004-05-10 14:23 ` Joakim Tjernlund
2004-05-10 14:23 ` Joakim Tjernlund
2004-05-11 7:27 ` [uClibc] Re: uclibc mips ld.so and undefined symbols withnonzerosymbol " Joakim Tjernlund
2004-05-11 7:27 ` Joakim Tjernlund
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