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* Implement _Unwind_Resume in libc on top of <unwind-link.h>Florian Weimer2021-03-011-0/+4
| | | | | | | | Temporarily move the arm _Unwind_Resume implementation to the file used by libpthread. It will be ported to <unwind-link.h> along with the rest of nptl. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Implement <unwind-link.h> for dynamically loading the libgcc_s unwinderFlorian Weimer2021-03-011-0/+35
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>