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Re: [Qemu-devel] Debugging low level ARM with GDB

From: Dirk Behme
Subject: Re: [Qemu-devel] Debugging low level ARM with GDB
Date: Fri, 24 Mar 2006 17:51:59 +0100
User-agent: Mozilla Thunderbird 1.0.7 (X11/20050923)

Paul Brook wrote:
But PC is still wrong. Who sets the PC to KERNEL_LOAD_ADDR

What makes you think ti's wrong? There's a small bootloader built into qemu.

Uups. Then it seems that I start things the wrong way. I start QEMU with -S -s, then I attach GDB, and GDB "complains" that PC is at 0x0 (and not 0x10000). How do I have to invoke things in the correct way (and that this bootloader is used) so that system is at 0x10000 if I attach GDB and can start with si debugging from there?

Then I tried the other way around: Instead of adapting
u-boot, it should be possible to adapt hw/integratorcp.c to
the address u-boot is linked to by default. This is
0x11080000. For my changes see below. With this, I get

You're obviously using the wrong u-boot config then. 0x11080000 isn't even a RAM address.

Yes, seems that I was unclear here. Sorry. It's for an other board. Take this question as the first step for a new machine description using integrator as an example.

Thanks for your help and patience!


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