On Tue, 15 Apr 2003, David Mosberger wrote:
> What's the point of using "unsigned long" for storing module version
> CRCs? As far as I can see, the CRCs are 32 bits in size, so using u32
> would be more appropriate (and would avoid wasting space on 64-bit
> platforms).
You're right that 32 bits would be enough to hold the CRC. However, we do
not yet know the checksum at compile time, so the trick I came up with is
to use the linker to fill in the crcs afterwards, using assignment to
absolute values. So while the crcs appear to be numbers to the C code,
they are handled like addresses from the linker side, and things would
most likely go badly wrong if the sizes aren't equal, though I have to
admit I didn't try.
--Kai
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This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:17 EST