On 4/13/20 2:12 PM, Vineet Gupta via Libc-alpha wrote: > On 4/6/20 11:54 AM, Vineet Gupta wrote: >> 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 ! > > ping ^2 ! If this is not suitable for common code, I'd still like to add this as part of ARC port to safe guard against future snafus. >>> --- >>> 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
