glibc/sysdeps/generic/unwind-arch.h
Florian Weimer 9fc813e1a3 Implement <unwind-link.h> for dynamically loading the libgcc_s unwinder
This will be used to consolidate the libgcc_s access for backtrace
and pthread_cancel.

Unlike the existing backtrace implementations, it provides some
hardening based on pointer mangling.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2021-03-01 15:58:01 +01:00

36 lines
1.3 KiB
C

/* Dynamic loading of the libgcc unwinder. Generic version of parameters.
Copyright (C) 2021 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
<https://www.gnu.org/licenses/>. */
#ifndef _ARCH_UNWIND_LINK_H
#define _ARCH_UNWIND_LINK_H
/* The _Unwind_GetIP function is supported. */
#define UNWIND_LINK_GETIP 1
/* The __frame_state_for function is needed and re-exported from glibc. */
#define UNWIND_LINK_FRAME_STATE_FOR 0
/* No adjustment of the is needed. */
#define UNWIND_LINK_FRAME_ADJUSTMENT 0
/* There are no extra fields in struct unwind_link in the generic version. */
#define UNWIND_LINK_EXTRA_FIELDS
#define UNWIND_LINK_EXTRA_INIT
#endif /* _ARCH_UNWIND_LINK_H */