[PATCH] Force 64-bit time based syscalls for TIMESIZE==64 on 32-bit arches

[Alistair Francis]

On Mon, Feb 24, 2020 at 10:34 AM Vineet Gupta
<Vineet.Gupta1@synopsys.com> wrote:
>
> This provides better out-of-box support for 32-bit arches with 64-bit
> time_t
>
> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
> ---
>  sysdeps/unix/sysv/linux/generic/sysdep.h | 48 ++++++++++++++++++++++++
>  1 file changed, 48 insertions(+)
>
> diff --git a/sysdeps/unix/sysv/linux/generic/sysdep.h b/sysdeps/unix/sysv/linux/generic/sysdep.h
> index 23defce7c3e1..27b0079a2a71 100644
> --- a/sysdeps/unix/sysv/linux/generic/sysdep.h
> +++ b/sysdeps/unix/sysv/linux/generic/sysdep.h
> @@ -17,6 +17,7 @@
>     <https://www.gnu.org/licenses/>.  */
>
>  #include <bits/wordsize.h>
> +#include <bits/timesize.h>
>  #include <kernel-features.h>
>  #include <sysdeps/unix/sysdep.h>
>  #include <sysdeps/unix/sysv/linux/sysdep.h>
> @@ -33,3 +34,50 @@
>  #define __NR_pread __NR_pread64
>  #define __NR_pwrite __NR_pwrite64
>  #endif
> +
> +/* Override syscalls for asm-generic ABIs with 64-bit time.  */
> +#if __WORDSIZE == 32 && __TIMESIZE == 64
> +
> +# undef __NR_futex
> +# define __NR_futex __NR_futex_time64

I think you should do what RV32 does and wrap these in ifndef's

Alistair

> +
> +# undef __NR_rt_sigtimedwait
> +# define __NR_rt_sigtimedwait __NR_rt_sigtimedwait_time64
> +
> +# undef __NR_ppoll
> +# define __NR_ppoll __NR_ppoll_time64
> +
> +# undef __NR_utimensat
> +# define __NR_utimensat __NR_utimensat_time64
> +
> +# undef __NR_pselect6
> +# define __NR_pselect6 __NR_pselect6_time64
> +
> +# undef __NR_recvmmsg
> +# define __NR_recvmmsg __NR_recvmmsg_time64
> +
> +# undef __NR_semtimedop
> +# define __NR_semtimedop __NR_semtimedop_time64
> +
> +# undef __NR_mq_timedreceive
> +# define __NR_mq_timedreceive __NR_mq_timedreceive_time64
> +
> +# undef __NR_mq_timedsend
> +# define __NR_mq_timedsend __NR_mq_timedsend_time64
> +
> +# undef __NR_clock_getres
> +# define __NR_clock_getres __NR_clock_getres_time64
> +
> +# undef __NR_timerfd_settime
> +# define __NR_timerfd_settime __NR_timerfd_settime64
> +
> +# undef __NR_timerfd_gettime
> +# define __NR_timerfd_gettime __NR_timerfd_gettime64
> +
> +# undef __NR_sched_rr_get_interval
> +# define __NR_sched_rr_get_interval __NR_sched_rr_get_interval_time64
> +
> +# undef __NR_clock_adjtime
> +# define __NR_clock_adjtime __NR_clock_adjtime64
> +
> +#endif
> --
> 2.20.1
>