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From: | C Bergström |
Subject: | Re: [Libunwind-devel] [PATCH] restore "x0" and "x1" registers |
Date: | Sun, 19 Oct 2014 23:23:33 +0700 |
On 10 October 2014 16:51, Arun Sharma <address@hidden> wrote:
> You wrote:
>
>> And yes, it seems we need to restore x0, x1, x2, x3, not only x0 and x1.
>
> Did I miss a patch sent to the list?
I haven't seen it too.
BTW, I may buy Christian's argument that not checking eh_valid_mask is
slower than restoring the registers, but are we compliant with the
specification of the function in that case ? and Arun do you
understand IA64 code which restored the exception argument register
when a signal is involved only when eh_valid_mask is set, and always
restore them in the normal path ? My understanding of unw_resume
documentation is that is should be the opposite.
Yvan
libunwind_aarch64.patch
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