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Re: [Qemu-devel] Re: [PATCH v5 18/18] gdbstub: x86: Switch 64/32 bit reg

From: Paul Brook
Subject: Re: [Qemu-devel] Re: [PATCH v5 18/18] gdbstub: x86: Switch 64/32 bit registers dynamically
Date: Tue, 18 Nov 2008 22:46:54 +0000
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> The best approach, definitely, would be to teach GDB how to switch the
> disassembler mode depending on the thread's (or VCPUs) state. But so
> there is neither a mechanism in GDB for this, nor is GDB even aware of
> the x86 modes (no tracking of privileged registers). We have some
> preliminary patches for this, but they are still far away from GDB
> mainline.

I'm pretty sure all the infrastructure is there. gdb is able to natively debug 
32-bit binaries on a 64-bit host and is able to switch disassembler modes for 
ARM vs. Thumb.


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