From: Richard Henderson <richard.henderson@linaro.org>
To: Max Filippov <jcmvbkbc@gmail.com>
Cc: qemu-devel@nongnu.org, Laurent Vivier <laurent@vivier.eu>,
qemu-stable@nongnu.org
Subject: Re: [PATCH] linux-user: xtensa: fix signal delivery in FDPIC
Date: Sun, 12 Nov 2023 12:37:38 -0800 [thread overview]
Message-ID: <747930b5-f3d4-45d9-9e66-071ad2847996@linaro.org> (raw)
In-Reply-To: <CAMo8BfLfqUPrpTrBGnv3rEcyyKByqA-NCP2yP0PtUr9bhH98ZQ@mail.gmail.com>
On 11/12/23 09:02, Max Filippov wrote:
> On Sun, Nov 12, 2023 at 8:51 AM Richard Henderson
>> However, it does not handle the GOT register for the restorer, like we do on ARM. That
>> said, I can't find any libc sources for xtensa, or at least that aren't out of date by a
>
> It's WIP, available at https://github.com/jcmvbkbc/uclibc-ng-xtensa
> branch xtensa-1.0.44-fdpic
>
>> decade, so I can't tell if libc *knows* the got register won't be loaded, and it doesn't
>> matter because it only uses the sigreturn syscall.
>
> That's the case. AFAU the restorer field is not for public use and the function
> used as a restorer by the uclibc does not care about the GOT pointer.
Right-o, thanks for the pointer.
r~
prev parent reply other threads:[~2023-11-12 20:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-11 11:22 [PATCH] linux-user: xtensa: fix signal delivery in FDPIC Max Filippov
2023-11-12 16:51 ` Richard Henderson
2023-11-12 17:02 ` Max Filippov
2023-11-12 20:37 ` Richard Henderson [this message]
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