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Re: [PATCH 0/8] [AArch64] Add support for tracepoints
- From: Yao Qi <qiyaoltc at gmail dot com>
- To: Pierre Langlois <pierre dot langlois at arm dot com>
- Cc: gdb-patches at sourceware dot org
- Date: Wed, 08 Jul 2015 17:42:21 +0100
- Subject: Re: [PATCH 0/8] [AArch64] Add support for tracepoints
- Authentication-results: sourceware.org; auth=none
- References: <1436273518-5959-1-git-send-email-pierre dot langlois at arm dot com>
Pierre Langlois <pierre.langlois@arm.com> writes:
> These patches enable tracepoints for AArch64. Although tracepoints are
> enabled in GDBServer with the last patch, most of the changes are in GDB.
> The most important changes teach AArch64's frame unwinders to report when
> the inferior is unavailable.
>
> The first three patches refactor the frame caches. The idea is to keep
> accesses to the inferior's registers in aarch64_make_prologue_cache and
> aarch64_make_stub_cache. This way the following patches can easily catch
> exceptions when the inferior is unavailable.
>
> The following two patches teach AArch64's unwinders to terminate
> gracefully, in a similar way as it was done for x86 here:
>
> https://sourceware.org/ml/gdb-patches/2011-02/msg00611.html
>
> It fixes cases where we do not have debugging information and AArch64's
> unwinders need to be used when examining a trace buffer. In this context
> we cannot assume that the inferior's memory and registers are
> available.
Beside Pedro's comments, we need a NEWS entry. Could you please write
one?
--
Yao (éå)