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Re: [Qemu-devel] [PATCH 2/2] fix ARMv7 data processing instructions
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From: |
Paul Brook |
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Subject: |
Re: [Qemu-devel] [PATCH 2/2] fix ARMv7 data processing instructions |
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Date: |
Fri, 15 May 2009 03:19:46 +0100 |
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User-agent: |
KMail/1.11.2 (Linux/2.6.29-2-amd64; KDE/4.2.2; x86_64; ; ) |
On Friday 15 May 2009, Paul Brook wrote:
> On Wednesday 06 May 2009, Juha Riihimäki wrote:
> > ARMv7 defines a new behavior for ARM data processing instructions
> > compared to earlier architecture revisions; when the destination
> > register is R15, a Branch and Exchange operation is executed rather
> > than a simple Branch to the target address. This patch corrects the
> > behavior of the emulation for the aforementioned operations.
>
> We should not switch modes if instructions sets the condition flags.
On second looks, we get those cases wrong anyway, so I've applied the patch.
Paul