lkml.org 
[lkml]   [2016]   [May]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 24/25] arm64:ilp32: add vdso-ilp32 and use for signal return
From
Date
Hi,

On 2016/5/5 7:23, Andrew Pinski wrote:
> On Wed, May 4, 2016 at 2:49 PM, Yury Norov <ynorov@caviumnetworks.com> wrote:
>> On Tue, May 03, 2016 at 08:41:25PM +0800, Zhangjian (Bamvor) wrote:
>>> Hi, all
>>>
>>> After apply this patch with my small testcase, the vsyscall of gettimeofday in
>>> ilp32 works in both big endian and small endian. In this patch, I use the
>>> different register and offset for ilp32 and lp64. Actually, the
>>> COMPAT_TVAL_TV_SEC is same as TVAL_TV_SEC(so as to COMPAT_TSPEC_TV_SEC and
>>> TSPEC_TV_SEC). I add it to keep the logic clear. I also change the version
>>> of vdso to 4.6. It should change to 2.6.39 if glibc is not update.
>>>
>>
>> [...]
>>
>> Hi Bamvor,
>>
>> It works for me as well. Thank you.
>> I'll incorporate it in next submission.
>
> We should add the following so we are complaint to the ILP32 ABI
> dealing with pointers don't have to be zero extended for arguments,
> Note ZERO should most likely be ZERO_PTR or something to do that
> effect, I am not so good with names.
> #ifdef __LP64__
> #define ZERO(n)
> #else
> #define ZERO(n) mov w##n, w##n
> #endif
>
> ...
> ENTRY(__kernel_gettimeofday)
> .cfi_startproc
> ZERO(0)
> ZERO(1)
> ...
> ENTRY(__kernel_clock_gettime)
> .cfi_startproc
> ZERO(1)
> ...
> ENTRY(__kernel_clock_getres)
> .cfi_startproc
> ZERO(1)
Thanks. I will test and send a new version.

Thanks.

Bamvor
> Thanks,
> Andrew Pinski
>
>>
>> Yury.

\
 
 \ /
  Last update: 2016-05-05 05:01    [W:0.747 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site