From: Thomas Weißschuh Date: Sat, 20 Dec 2025 13:55:50 +0000 (+0100) Subject: tools/nolibc/gettimeofday: avoid libgcc 64-bit divisions X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7efd15d22a9b7e62d0659471bde25c35ef50c9e5;p=thirdparty%2Fkernel%2Flinux.git tools/nolibc/gettimeofday: avoid libgcc 64-bit divisions timespec::tv_nsec is going to be 64-bit wide even on 32-bit architectures. As not all architectures support 64-bit division instructions, calls to libgcc (__divdi3()) may be emitted by the compiler which are not provided by nolibc. As tv_nsec is guaranteed to always fit into an uint32_t, perform a 32-bit division instead. Signed-off-by: Thomas Weißschuh Reviewed-by: Arnd Bergmann Acked-by: Willy Tarreau Link: https://patch.msgid.link/20251220-nolibc-uapi-types-v3-6-c662992f75d7@weissschuh.net --- diff --git a/tools/include/nolibc/sys/time.h b/tools/include/nolibc/sys/time.h index 171187836e6df..afdb7e326df17 100644 --- a/tools/include/nolibc/sys/time.h +++ b/tools/include/nolibc/sys/time.h @@ -30,7 +30,7 @@ int sys_gettimeofday(struct timeval *tv, struct timezone *tz) ret = sys_clock_gettime(CLOCK_REALTIME, &tp); if (!ret && tv) { tv->tv_sec = tp.tv_sec; - tv->tv_usec = tp.tv_nsec / 1000; + tv->tv_usec = (uint32_t)tp.tv_nsec / 1000; } return ret;