[PATCH 24/25] arm64:ilp32: add vdso-ilp32 and use for signal return

Arnd Bergmann
2016-04-29T17:30:19Z

On Friday 29 April 2016 17:01:55 Catalin Marinas wrote:
> On Wed, Apr 06, 2016 at 01:08:46AM +0300, Yury Norov wrote:
> > ILP32 VDSO exports next symbols:
> > __kernel_rt_sigreturn;
> > __kernel_gettimeofday;
> > __kernel_clock_gettime;
> > __kernel_clock_getres;
>
> [...]
>
> > +$(obj)/gettimeofday-ilp32.o: $(src)/../vdso/gettimeofday.S
> > + $(call if_changed_dep,vdso-ilp32as)
>
> Are struct timeval and timespec the same between ILP32 and LP64? For
> example, __kernel_gettimeofday() assumes TVAL_TV_SEC offset defined in
> asm-offsets.c based on the LP64 timeval.

No, ilp32 uses the generic 32-bit data structures, which have a 32-bit
time_t. I guess that means it can work for little-endian but not
big-endian, right?

Arnd