Date: Mon, 5 Dec 2011 12:54:15 -0800 From: some body <bsd.mharv@gmail.com> To: freebsd-hackers@freebsd.org Subject: boot0.S empty #ifdef Message-ID: <CAJy8JvTQvtq5z6MY%2BN9soTQia8SsD7bM0bAFA4YGAAw57=n4%2BA@mail.gmail.com>
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I sent this to freebsd-drives too but I think that might not be the right list for it so here it is: I am starting to learn how the kernel works and have started by going through the boot loader and I've noticed that between lines 21-32 in boot0.S there are some empty #ifdef statements. I was wondering a) where are these paramaters defined and if they are defined, what difference does it make since it looks like it doesn't change anything since they're empty? #ifdef SIO #endif #ifdef CHECK_DRIVE #endif #ifdef ONLY_F_KEYS #endif
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