On Fri, Nov 10, 2006 at 03:56:01PM +0000, Paul Brook wrote: > > Assuming that breakpoint locations are indeed meant to be virtual > > addresses, GDB would have to evaluate the CS descriptor, add the CS > > base to the EIP address and THEN check whether it knows the address. > > But as it seems to be segment-agnostic it doesn't do that and things > > break as a result. > > As Dan said, gdb knows nothing about x86 segmentation. As soon as you have > nonzero segment bases you're pretty much on your own. > > If you care about fixing this I suggest you get GDB folks to agree (and > document) how segmented memory models should work, then implement that model > in qemu. Hacking qemu to work for your particular case with unmodified gdb > probably "breaks" something else, so doesn't seem to improve the overall > usefulness.
I'd recommend the even simpler hack of having qemu report a PC that included the segment base :-) -- Daniel Jacobowitz CodeSourcery _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel
