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Re: [Qemu-devel] Questions on ARM port

From: Paul Brook
Subject: Re: [Qemu-devel] Questions on ARM port
Date: Tue, 14 Mar 2006 14:21:20 +0000
User-agent: KMail/1.9.1

> Basically, r3 is initialized by <start+8> (to 0x80000, in my case).  The
> next instruction (at <start+12>) switches the mode to FIQ.  After single
> steping over this in QEMU (via GDB si), r3 no longer contains what it
> had before (0x80000), instead, it is set to 0.  If I manually fix this
> (via set $r3=0x80000), then at the next mode switch (at <start+28>) r3
> is changed incorrectly to zero again.
> Is this my fault or what is happening?

It's a big in the qemu FIQ bank switching code. Fixed now.


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