Re: [Qemu-devel] [PATCH 05/20] target/arm: Restore SPSEL to correct CONTROL register on exception return

[Richard Henderson]

On 09/22/2017 10:59 AM, Peter Maydell wrote:
> On exception return for v8M, the SPSEL bit in the EXC_RETURN magic
> value should be restored to the SPSEL bit in the CONTROL register
> banked specified by the EXC_RETURN.ES bit.
> 
> Add write_v7m_control_spsel_for_secstate() which behaves like
> write_v7m_control_spsel() but allows the caller to specify which
> CONTROL bank to use, reimplement write_v7m_control_spsel() in
> terms of it, and use it in exception return.
> 
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  target/arm/helper.c | 40 +++++++++++++++++++++++++++-------------
>  1 file changed, 27 insertions(+), 13 deletions(-)

Reviewed-by: Richard Henderson <address@hidden>


r~