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0e411c5d30
Add the logic to append an 'extra TLS' block in the TLS block allocator with a generic stub implementation. The duplicated code in 'csu/libc-tls.c' and 'elf/dl-tls.c' is to handle both statically linked applications and the ELF dynamic loader. Signed-off-by: Michael Jeanson <mjeanson@efficios.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* extra tls utils for the dynamic linker. Generic stub version.
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Copyright (C) 2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _DL_EXTRA_TLS_H
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#define _DL_EXTRA_TLS_H 1
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#include <stddef.h>
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/* In this generic version, the extra TLS block is unused. */
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/* Returns the size of the extra TLS block, it must always be a multiple of the
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alignment. */
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static inline size_t
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_dl_extra_tls_get_size (void)
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{
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return 0;
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}
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/* Returns the alignment requirements of the extra TLS block. */
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static inline size_t
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_dl_extra_tls_get_align (void)
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{
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return 0;
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}
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/* Record the offset of the extra TLS block from the thread pointer. */
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static inline void
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_dl_extra_tls_set_offset (ptrdiff_t tls_offset __attribute__ ((unused)))
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{
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}
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#endif
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