[libunwind] Adjust the signal_frame test for Arm
Summary:
This patch adjusts the signal_frame.pass.cpp to pass on Arm targets:
* When Arm EHABI is used the unwinder does not use DWARF, hence the
DWARF-specific check unw_is_signal_frame() must be disabled.
* Certain C libraries don't include EH tables, so the unwinder must
not try to step out of main(). The patch moves the test code out of
main() into a separate function to avoid this.
Reviewers: saugustine, ostannard, phosek, jfb, mclow.lists
Reviewed By: saugustine
Subscribers: dexonsmith, aprantl, kristof.beyls, christof, libcxx-commits, pbarrio, labrinea
Tags: #libc
Differential Revision: https://reviews.llvm.org/D70397
GitOrigin-RevId: 4fb8ecdef4c9b19563e428a151c376a4103d65fc
1 file changed
