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9fc813e1a3
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>
36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
/* Dynamic loading of the libgcc unwinder. Arm customization.
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Copyright (C) 2021 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 _ARCH_UNWIND_LINK_H
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#define _ARCH_UNWIND_LINK_H
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/* On arm, _Unwind_GetIP is a macro. */
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#define UNWIND_LINK_GETIP 0
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#define UNWIND_LINK_FRAME_STATE_FOR 0
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#define UNWIND_LINK_FRAME_ADJUSTMENT 0
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#define UNWIND_LINK_EXTRA_FIELDS \
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__typeof (_Unwind_VRS_Get) *ptr__Unwind_VRS_Get;
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#define UNWIND_LINK_EXTRA_INIT \
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local.ptr__Unwind_VRS_Get \
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= __libc_dlsym (local_libgcc_handle, "_Unwind_VRS_Get"); \
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assert (local.ptr__Unwind_VRS_Get != NULL); \
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PTR_MANGLE (local.ptr__Unwind_VRS_Get);
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#endif /* _ARCH_UNWIND_LINK_H */
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