From 47c17d97681d9c5d080acfdb273fa0856c930e74 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Thomas=20Wei=C3=9Fschuh?= Date: Sat, 20 Dec 2025 14:55:51 +0100 Subject: [PATCH] tools/nolibc/select: avoid libgcc 64-bit multiplications MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit timeval::tv_usec is going to be 64-bit wide even on 32-bit architectures. As not all architectures support 64-bit multiplications instructions, calls to libgcc (__multi3()) may be emitted by the compiler which are not provided by nolibc. As tv_usec and tv_nsec are guaranteed to always fit into an uint32_t, perform a 32-bit multiplication instead. Signed-off-by: Thomas Weißschuh Acked-by: Willy Tarreau Reviewed-by: Arnd Bergmann Link: https://patch.msgid.link/20251220-nolibc-uapi-types-v3-7-c662992f75d7@weissschuh.net --- tools/include/nolibc/sys/select.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/include/nolibc/sys/select.h b/tools/include/nolibc/sys/select.h index f8870ad496879..80cb3755ba188 100644 --- a/tools/include/nolibc/sys/select.h +++ b/tools/include/nolibc/sys/select.h @@ -68,7 +68,7 @@ int sys_select(int nfds, fd_set *rfds, fd_set *wfds, fd_set *efds, struct timeva if (timeout) { t.tv_sec = timeout->tv_sec; - t.tv_nsec = timeout->tv_usec * 1000; + t.tv_nsec = (uint32_t)timeout->tv_usec * 1000; } return my_syscall6(__NR_pselect6_time64, nfds, rfds, wfds, efds, timeout ? &t : NULL, NULL); #else @@ -76,7 +76,7 @@ int sys_select(int nfds, fd_set *rfds, fd_set *wfds, fd_set *efds, struct timeva if (timeout) { t.tv_sec = timeout->tv_sec; - t.tv_nsec = timeout->tv_usec * 1000; + t.tv_nsec = (uint32_t)timeout->tv_usec * 1000; } return my_syscall6(__NR_pselect6, nfds, rfds, wfds, efds, timeout ? &t : NULL, NULL); #endif -- 2.47.3