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Re: [PATCH] Implement stap probe on ARM's unwinder
- From: Richard Henderson <rth at redhat dot com>
- To: Bernd Schmidt <bernds at codesourcery dot com>
- Cc: Ramana Radhakrishnan <ramana dot radhakrishnan at linaro dot org>, Sergio Durigan Junior <sergiodj at redhat dot com>, gcc-patches at gcc dot gnu dot org, Tom Tromey <tromey at redhat dot com>
- Date: Fri, 02 Dec 2011 16:00:47 -0800
- Subject: Re: [PATCH] Implement stap probe on ARM's unwinder
- References: <m3k46sotdr.fsf@redhat.com> <CACUk7=W1Vf1WBzRUc_1eJBkQw3en7s=Ya2-jzfRqHU6pb1w78w@mail.gmail.com> <4ED8C3BD.8040803@codesourcery.com>
On 12/02/2011 04:25 AM, Bernd Schmidt wrote:
> Doesn't look like it would cause problems. I have no idea what
> builtin_frob_return_addr does but it appears to exist everywhere.
It's for adjusting the return address in magic ways. E.g. Sparc pc+8 for
structure returns, ARM low bit for thumb returns. I.e. whatever the target
needs for EH handling.
r~