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Re: TLS on powerpc(32/64)
- From: Michael Snyder <Michael dot Snyder at palmsource dot com>
- To: Prosun Niyogi <niyogip at yahoo dot com>
- Cc: gdb at sourceware dot org, pniyogi at us dot ibm dot com
- Date: Fri, 22 Sep 2006 11:43:53 -0700
- Subject: Re: TLS on powerpc(32/64)
- References: <20060922181810.81410.qmail@web38911.mail.mud.yahoo.com>
On Fri, 2006-09-22 at 11:18 -0700, Prosun Niyogi wrote:
> Hi, thanks for your response. No, it isnt a
> glibc/libthread_db version problem ... I've built the
> same sources for ia32 and the test passes fine. It on
> powerpc that I see the failure.
>
> So, after a little digging, it seems like the load
> module address that gdb is using to make the call to
> td_thr_tls_get_addr_p is bogus. At the moment, I am
> comparing results with gdb-6.3 which works in my
> envrionment. The offset to the variable within LM
> looks fine. Still debugging. I am not too sure of what
> the concept of the load module address is. Where would
> be the appropriate place to look for background info?
> glibc TLS documentation?
>
> The lm_addr calculated in dwarf2loc.c looks bad on
> ppc.
That's a little beyond my knowledge. Could it be a 32/64
wordsize issue? A sign extension issue?