Hi, This patch:
http://lev.vlakno.cz/~rdivacky/boot2-mregparm.patch
makes boot2 to be compiled with -mregparm=3 (which shrinks it
some). It changes CFLAGS to include -mregparm=3 and also
rewrites sio.S to use register passing.
This survived my testing in qemu and jhb@s review.
Please test this patch with boot2 booting via serial console,
and with gptboot/zfsboot using serial console.
Thank you! This is the last FreeBSD patch in the clang-boot2
saga so please help.
roman
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