On 9/9/17 3:25 PM, Jan Beich wrote: > Warner Losh <i...@bsdimp.com> writes: > >> On Sat, Sep 9, 2017 at 1:05 PM, Jan Beich <jbe...@vfemail.net> wrote: >> >>> Warner Losh <i...@bsdimp.com> writes: >> The goal, if it doesn't work already, is for NEON to work if used, >> but not be required, just like all the other optional features of a CPU. > > FreeBSD doesn't support detecting NEON at runtime unlike Linux. Do you > mean at compile time? If so then the following probably needs to change > > $ cc -target armv7-unknown-freebsd12.0-gnueabihf -dM -E -</dev/null |& fgrep > -i neon > #define __ARM_NEON 1 > #define __ARM_NEON_FP 0x4 > #define __ARM_NEON__ 1
Re: runtime, I have patches in review to add AT_HWCAP for native FreeBSD/arm binaries. Right now it doesn't support a NEON hwcap but it should be easy to add the flag using the same check to enable it that Linux does. -- John Baldwin _______________________________________________ freebsd-toolchain@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to "freebsd-toolchain-unsubscr...@freebsd.org"
