src/sys/libkern/ffsdi2.c, branch main FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=main 2026-01-31T17:20:50Z libkern: Add libcalls for ffs and __ffsdi2 2026-01-31T17:20:50Z John Baldwin jhb@FreeBSD.org 2026-01-31T17:20:50Z urn:sha1:4c822dd4a15c533c08271b2286da949fffafc89e These are needed when compiling a RISC-V kernel with GCC which does not inline __builtin_ffs*. The __ffsdi2 is adapated from the previous ffsl.c. This partially reverts commit f4db342d44198973c1c7b9005d0c5683a582707e. Reviewed by: mhorne Differential Revision: https://reviews.freebsd.org/D54967