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Date: Tue, 23 Dec 2003 15:00:00 -0000
From: Daniel Jacobowitz <drow@mvista.com>
To: "Manoj Verma, Noida" <manojv@noida.hcltech.com>
Cc: gdb@sources.redhat.com, "Amit S. Kale" <amitkale@emsyssoft.com>
Subject: Re: Access ARM BANKED registers
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	gdb@sources.redhat.com, "Amit S. Kale" <amitkale@emsyssoft.com>
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On Tue, Dec 23, 2003 at 05:02:50PM +0530, Manoj Verma, Noida wrote:
> Hi,
> 
> I am doing remote debugging using GDB Server running on ARM based target.
> My HOST is a i386 based Linux box. 
> 
> When I say:
> (gdb) mt packet g
> The reply is :
> 01000000e4fdffbfecfdffbf43000000e4fdffbf040f02405c82000001000000a0830000ec77
> 1340607e1340c8fdffbfccfdffbfb4fdffbf50140440c0830000000000000000000000000000
> 0000000000000000000000000000000000000000000000000000000000000000000000000000
> 0000000000000000000000000000000000000000000000000000000000000000000000000000
> 00000000000000000000000010000060
> 
> which I think maps to:
> 
> {"r0",  "r1",  "r2",  "r3", "r4",  "r5",  "r6",  "r7", "r8",  "r9",  "r10",
> "r11", "r12", "sp",  "lr",  "pc", "f0",  "f1",  "f2",  "f3", "f4",  "f5",
> "f6",  "f7", "fps", "cpsr" };
> 
> 
> My question is:
> If I were to access the BANKED registers (like R8_fiq, R14_abt etc..) of
> ARM, will the existing GDB Server architecture would suffice my need? Or in
> other words, How can I achieve this?

The current GDB protocol used for ARM doesn't support those registers. 
You'd probably want to add support for p/P packet register fetches and
query them that way.

Note that the current GDB _client_ doesn't support them either.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer