site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com --- At Sat, 11 Apr 2009 07:13:16 -0400, Chas Williams (CONTRACTOR) wrote:

In message <20090410204924.1368388445 @mini.internal.murphyslogic.com>,"Duane Murphy" writes:

...

We are updating our drivers and moving them to 10.5 from 10.4. I am getting a link/load error when loading the kext.

Undefined Symbols: IOBufferMemoryDescriptor::getVirtualSegment

sure you dont want to use getBytesNoCopy()? getVirtualSegment() is basically the same except it optionally returned the remaining length of the segment.

Well, that's the interesting part; I'm _not_ calling getVirtualSegment(); not using it at all. Turns out I was subclassing IOBufferMemoryDescriptor. I haven't looked at the implementation yet (I should do that), but I suspect that the way it is setup, getVirtualSegment() is not part of the vtable for the class, causing the vtable to not be able to be filled for a subclass. Somehow, this manages to work for using IOBufferMemoryDescriptor, but not for subclassing. I've changed to sublcassing IOMemoryDescriptor, the root class of memory management. The subclass keeps an IOBufferMemoryDescriptor as a member and delegates the functions to that. I'm still having trouble with this, so I suspect that I need to override and delegate more functions. ...Duane _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... This email sent to site_archiver@lists.apple.com