It's time to provide 64bit time structs for all platforms, for y2038 is near. clock_gettime64 has been added from at least v5.0.0. Suggested-by: Arnd Bergmann <arnd@xxxxxxxx> Link: https://lore.kernel.org/linux-riscv/afc4944f-9494-4367-906d-06ac47648ab7@xxxxxxxxxxxxxxxx/ Signed-off-by: Zhangjin Wu <falcon@xxxxxxxxxxx> --- tools/include/nolibc/sys.h | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h index ca802627e88f..533233094733 100644 --- a/tools/include/nolibc/sys.h +++ b/tools/include/nolibc/sys.h @@ -25,6 +25,7 @@ #include "arch.h" #include "errno.h" +#include "string.h" #include "types.h" /* Functions in this file only describe syscalls. They're declared static so @@ -552,7 +553,34 @@ long getpagesize(void) static __attribute__((unused)) int sys_gettimeofday(struct timeval *tv, struct timezone *tz) { - return my_syscall2(__NR_gettimeofday, tv, tz); +#if defined(__NR_clock_gettime) || defined(__NR_clock_gettime64) +#ifdef __NR_clock_gettime64 + const long nr_clock_gettime = __NR_clock_gettime64; +#elif __SIZEOF_LONG__ == 8 + const long nr_clock_gettime = __NR_clock_gettime; +#else +#error No __NR_clock_gettime64 defined, cannot implement time64 sys_gettimeofday() +#endif + struct timespec ts; + int ret; + + /* set tz to zero to avoid random number */ + if (tz != NULL) + memset(tz, 0, sizeof(struct timezone)); + + if (tv == NULL) + return 0; + + ret = my_syscall2(nr_clock_gettime, CLOCK_REALTIME, &ts); + if (ret) + return ret; + + tv->tv_sec = ts.tv_sec; + tv->tv_usec = (unsigned int)ts.tv_nsec / 1000; + return 0; +#else +#error Neither __NR_clock_gettime nor __NR_clock_gettime64 defined, cannot implement sys_gettimeofday() +#endif } static __attribute__((unused)) -- 2.25.1
