Switching architectures from a remote target

Hui Zhu teawater@gmail.com
Fri Feb 5 06:50:00 GMT 2010

Try "set architecture"
But I don't have a inferior that can change bit when it's debug. I
don't sure if it works or not.


On Fri, Feb 5, 2010 at 03:38, Robert Barnes <robcb85@gmail.com> wrote:
> I am using GDB to interface with a remote target over serial. The
> target architecture changes during execution (e.g. 32-bit to 64-bit).
> When the architecture changes I need gdb to change its internal
> representation of the remote architecture at the same time. The
> primary problem is the remote 'g' command, it's return packet size is
> determined by the initial call. When the architecture changes, the
> size and number of registers may change, thus the size of the 'g'
> packet changes. Yet gdb is still expecting the old size.
> This problem is addressed in section 7 of "Multi-arching Insights and
> GDB" by Andrew Cagney
> (http://www.gnu.org/software/gdb/papers/multi-arch/real-multi-arch/).
> As far as I can tell the recommendations haven't been implemented.
> Are there any workarounds or solutions to the general problem of
> handling changing architectures on a remote target?
> Thanks!
> -Rob

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