Re: [Qemu-devel] Re: Debugging with paging enabled

2006-11-10 Thread Daniel Jacobowitz
On Fri, Nov 10, 2006 at 08:01:54PM +0100, Marcel Kilgus wrote: > Or do you mean that qemu should always and in all situations report an > adjusted EIP to GDB and re-adjust all EIPs it gets? Interesting idea, > but I guess that too would lead to dozens of other problems. Yes precisely. I doubt it

Re: [Qemu-devel] Re: Debugging with paging enabled

2006-11-10 Thread Daniel Jacobowitz
On Fri, Nov 10, 2006 at 03:56:01PM +, 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 b

Re: [Qemu-devel] Re: Debugging with paging enabled

2006-11-10 Thread Paul Brook
> 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

Re: [Qemu-devel] Re: Debugging with paging enabled

2006-11-10 Thread andrzej zaborowski
On 08/11/06, Marcel Kilgus <[EMAIL PROTECTED]> wrote: > Correct. It doesn't know anything at all about i386 segmentation. Well, that explains it then, I guess. In that case I don't really see a clean solution for it. If I understand the problem, the clean solution is having the debugging symb

Re: [Qemu-devel] Re: Debugging with paging enabled

2006-11-08 Thread Daniel Jacobowitz
On Thu, Nov 09, 2006 at 12:57:29AM +0100, Marcel Kilgus wrote: > Daniel Jacobowitz wrote: > >> Leaving that aside, if I do set the breakpoint correctly at virtual > >> address (e.g.) 0xC0123456 qemu will (correctly I guess) cause an > >> exception for code offset 0x123456 (as CS base is 0xC000)

Re: [Qemu-devel] Re: Debugging with paging enabled

2006-11-08 Thread Daniel Jacobowitz
On Thu, Nov 09, 2006 at 12:33:05AM +0100, Marcel Kilgus wrote: > Leaving that aside, if I do set the breakpoint correctly at virtual > address (e.g.) 0xC0123456 qemu will (correctly I guess) cause an > exception for code offset 0x123456 (as CS base is 0xC000). GDB > however then doesn't recogni

Re: [Qemu-devel] Re: Debugging with paging enabled

2006-11-08 Thread Fabrice Bellard
Marcel Kilgus wrote: /me wrote: Having to always set them both in the high and low area is a bit cumbersome to say the least. Any suggestion on what I'm missing or can do to get breakpoints working properly again? Okay, the QEMU source code was a lot more readable than I expected it to be, s