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Re: [PATCH] powerpc: Provide __tls_get_addr () in static libc
- From: Andreas Schwab <schwab at suse dot de>
- To: Carlos Eduardo Seo <cseo at linux dot vnet dot ibm dot com>
- Cc: GNU C Library <libc-alpha at sourceware dot org>, "Steven J. Munroe" <sjmunroe at us dot ibm dot com>, Tulio Machado <tuliom at linux dot vnet dot ibm dot com>
- Date: Thu, 08 Oct 2015 09:54:11 +0200
- Subject: Re: [PATCH] powerpc: Provide __tls_get_addr () in static libc
- Authentication-results: sourceware.org; auth=none
- References: <A6CFD9AA-EFAA-4E5D-BAC7-F5B68056A487 at linux dot vnet dot ibm dot com>
Carlos Eduardo Seo <cseo@linux.vnet.ibm.com> writes:
> --- /dev/null
> +++ b/sysdeps/powerpc/libc-tls.c
> @@ -0,0 +1,28 @@
> +/* Thread-local storage handling in the ELF dynamic linker. PowerPC version.
> + Copyright (C) 2015 Free Software Foundation, Inc.
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <http://www.gnu.org/licenses/>. */
> +
> +#include <csu/libc-tls.c>
> +#include <dl-tls.h>
> +
> +void *
> +__tls_get_addr (tls_index *ti)
> +{
> + dtv_t *dtv = THREAD_DTV ();
> + return (char *) dtv[1].pointer.val + ti->ti_offset + TLS_DTV_OFFSET;
> +}
> +
Please add a comment on why this is needed.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
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