From: Richard Henderson <rth@redhat.com>
To: "Jose E. Marchesi" <jose.marchesi@oracle.com>,
Eric Botcazou <ebotcazou@adacore.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: [PATCH][SPARC] sparc: switch -fasynchronous-unwind-tables on by default.
Date: Thu, 17 Mar 2016 21:17:00 -0000 [thread overview]
Message-ID: <56EB1E4D.4050505@redhat.com> (raw)
In-Reply-To: <87h9grcy85.fsf@oracle.com>
On 02/29/2016 07:50 AM, Jose E. Marchesi wrote:
> The backtrace(3) implementation for sparc contains a simple unwinder
> that works well in most cases, but that unwinder is not used if
> libgcc_s.so can be dlopened and it provides _Unwind_Backtrace.
There's no reason that simple unwinder can't be put into
MD_FALLBACK_FRAME_STATE_FOR.
Currently we only use that for unwinding through signal stacks, but it could be
used for anything that the dwarf2 unwinder doesn't have data for. Given sparc
register windows, this seems particularly reliable.
r~
next prev parent reply other threads:[~2016-03-17 21:14 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-25 21:16 Jose E. Marchesi
2016-02-28 18:35 ` Eric Botcazou
2016-02-29 15:42 ` Jose E. Marchesi
2016-03-09 10:03 ` Eric Botcazou
2016-03-15 16:38 ` Jose E. Marchesi
2016-03-17 21:17 ` Richard Henderson [this message]
2016-03-18 1:07 ` Jose E. Marchesi
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