Re: PTRACE_GET_THREAD_AREA
Daniel Jacobowitz (dan@debian.org)
Fri, 20 Dec 2002 11:08:17 -0500
On Fri, Dec 20, 2002 at 10:55:16AM -0500, Jakub Jelinek wrote:
> On Fri, Dec 20, 2002 at 10:48:29AM -0500, Daniel Jacobowitz wrote:
> > Eventually most or all targets will have thread-specific data
> > implemented; I don't want to have to redo this for each one.
>
> Well, but on most arches you don't need any kernel support for TLS.
> On sparc32/sparc64/IA-64/s390/s390x and others you simply have one
> general register reserved for it by the ABI, on Alpha you use a PAL
> call.
> set_thread_area/get_thread_area is IA-32/x86-64 specific.
Oh, right, I guess we won't need anything if it's just in a register :)
Architecture-specific it is, then. For Alpha (and probably MIPS) we
can add a ptrace equivalent of the trap to fetch the pointer. Patch
looks fine to me.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
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