Use PNaCl's _Unwind_PNaClSetResult functions for arm-nacl-clang For x86, the register values used by these functions match the __builtin_eh_return_data_regno builtins, so the native cxa_personality in libcxxabi matches the special unwinder built for PNaCl. However on ARM it does not. So as long as we are linking with the PNaCl uwinder we need to also use its API. [email protected], [email protected] BUG= https://code.google.com/p/nativeclient/issues/detail?id=4018 Review URL: https://codereview.chromium.org/876353003