git/linux-cryptodev-2.6
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git synced 2026-04-18 03:23:53 -04:00
Code Issues Packages Projects Releases Wiki Activity

tools/nolibc/select: avoid libgcc 64-bit multiplications

Browse Source 
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 <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20251220-nolibc-uapi-types-v3-7-c662992f75d7@weissschuh.net
This commit is contained in:
Thomas Weißschuh
2025-12-20 14:55:51 +01:00
parent 7efd15d22a
commit 47c17d9768
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
tools/include/nolibc/sys/select.h
View File

@@ -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