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Re: [Qemu-devel] [PATCH] linux-user: ARM: Ignore immediate value for svc
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH] linux-user: ARM: Ignore immediate value for svc in thumb mode |
Date: |
Fri, 22 Jun 2012 10:39:11 +0100 |
On 29 May 2012 16:30, Alexander Graf <address@hidden> wrote:
> When running in thumb mode, Linux doesn't evaluate the immediate value
> of the svc instruction, but instead just always assumes the syscall number
> to be in r7.
>
> This fixes executing go_bootstrap while building go for me.
>
> Signed-off-by: Alexander Graf <address@hidden>
Yep, there's no OABI back-compat for thumb so it is always EABI.
(I think the code emitting Thumb SVCs with non-zero immediate
values is probably broken though.)
Reviewed-by: Peter Maydell <address@hidden>
-- PMM
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