On 3/31/20 2:47 PM, Vineet Gupta via Libc-alpha wrote: > From: Vineet Gupta via Libc-alpha <libc-alpha@xxxxxxxxxxxxxx> > > An older asm-generic syscall ABI may have kernel provide 32-bit > time syscalls, so undef them to not mix 32/64 in 64-bit time regime. > > Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx> ping ! > --- > Changes since v2 > - Made x32 safe > > Changes since v1 > - don't redirect these to 64-bit variants > --- > sysdeps/unix/sysv/linux/generic/sysdep.h | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > diff --git a/sysdeps/unix/sysv/linux/generic/sysdep.h b/sysdeps/unix/sysv/linux/generic/sysdep.h > index 40b4b955ca1b..b83e17e1c9d1 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> > @@ -25,3 +26,26 @@ > #ifdef __NR_llseek > # define __NR__llseek __NR_llseek > #endif > + > +#if (__TIMESIZE == 64 && __WORDSIZE == 32 \ > + && (!defined __SYSCALL_WORDSIZE || __SYSCALL_WORDSIZE == 32)) > + > +/* Don't provide 32-bit time syscalls even if the kernel ABI provides > + them (Older variants of asm-generic ABIs e.g. ARC). */ > + > +# undef __NR_futex > +# undef __NR_rt_sigtimedwait > +# undef __NR_ppoll > +# undef __NR_utimensat > +# undef __NR_pselect6 > +# undef __NR_recvmmsg > +# undef __NR_semtimedop > +# undef __NR_mq_timedreceive > +# undef __NR_mq_timedsend > +# undef __NR_clock_getres > +# undef __NR_timerfd_settime > +# undef __NR_timerfd_gettime > +# undef __NR_sched_rr_get_interval > +# undef __NR_clock_adjtime > + > +#endif > _______________________________________________ linux-snps-arc mailing list linux-snps-arc@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-snps-arc
