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Re: bin/47129: mouse won't move diagonally in i386 X11 on amd64 kernel
The following reply was made to PR bin/47129; it has been noted by GNATS.
From: David Laight <david%l8s.co.uk@localhost>
Cc: gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost,
Subject: Re: bin/47129: mouse won't move diagonally in i386 X11 on amd64 kernel
Date: Sun, 28 Oct 2012 15:10:28 +0000
On Sat, Oct 27, 2012 at 05:45:03PM +0000, Alan Barrett wrote:
> This problem is traceable to the change in struct timespec between i386
> and amd64. struct timespec is embedded in struct wscons_event, which
> is used for data read from the mouse. struct timespec contains "long
> tv_nsec", which is 32 bits on i386, and 64 bits on amd64. (Defining
> tv_nsec as long doesn't really make sense, because there is no need to
> represent values larger than 1000000000, so 32 bits would have been
> plenty, but POSIX specifies long and NetBSD apparently chose not to
> deviate from POSIX here.)
That wouldn't have helped, the 'seconds' part is 64bit, so the amd64
timespec would contain 4 bytes of padding - total 16 bytes.
The i386 one is 12 bytes.
David Laight: david%l8s.co.uk@localhost
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