On Thu, 2020-09-03 at 17:58 +0200, Mark Wielaard wrote: > DW_CFA_AARCH64_negate_ra_state is used on aarch64 to indicate whether > or not the return address is mangled or not. This has the same value > as the DW_CFA_GNU_window_save. So we have to pass around the e_machine > value of the process or core we are inspecting to know which one to > use. > > Note that it isn't actually implemented yet. It needs ARMv8.3 hardware. > If we don't have such hardware it is enough to simply ignore the > DW_CFA_AARCH64_negate_ra_state (and not confuse it with > DW_CFA_GNU_window_save) to get backtraces to work on aarch64. > > Add a testcase for eu-readelf --debug-dump=frames to show the value > is correctly recognized. Also don't warn we cannot find any DWARF > if we are just dumping frames (those will come from .eh_frame if > there is no .debug_frame).
Pushed.
