Re: [RFC PATCH] linux-user/sparc: Implement v8plus signals

[Richard Henderson <richard.henderson@linaro.org>]

On 6/14/21 11:48 PM, Laurent Vivier wrote:
> Le 26/05/2021 à 03:13, Richard Henderson a écrit :
>> Sparc v8plus is a sparc64 running a 32-bit ABI.
>> The significant difference vs sparc32 is that all 64 bits of
>> the %g and %o registers, plus %xcc, are saved across interrupts,
>> context switches, and signals.
>>
>> There's a special marker in the saved %psr value that's used to
>> indicate that %xcc and the high bits are present in the frame.
>>
>> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
>> ---
>>
>> I have been unable to find an extant v8plus distribution with
>> which to test this beyond compilation.  Thus the RFC.  I know
>> debian used to have one, but they have moved to pure sparc64 now.
>>
>> Thoughts?
> 
> In my test, I use debian wheezy, and it seems to be sparc32plus v8+:
> 
> $ file chroot/sparc/wheezy/bin/ls
> chroot/sparc/wheezy/bin/ls: ELF 32-bit MSB executable, SPARC32PLUS, V8+ Required, total store
> ordering, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.2, for GNU/Linux
> 2.6.26, BuildID[sha1]=3fdfb5b9f829824f6110b7a2d91efd9947614263, stripped
> 
> I get wheezy from http://archive.debian.org/debian
> 
> If you want I can make a try with your patch.

Yes, please.


r~