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Re: [Qemu-arm] [Qemu-devel] [PATCH 12/20] target/arm: Add v8M support to
From: |
Richard Henderson |
Subject: |
Re: [Qemu-arm] [Qemu-devel] [PATCH 12/20] target/arm: Add v8M support to exception entry code |
Date: |
Thu, 5 Oct 2017 14:31:33 -0400 |
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Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 |
On 09/22/2017 10:59 AM, Peter Maydell wrote:
> Add support for v8M and in particular the security extension
> to the exception entry code. This requires changes to:
> * calculation of the exception-return magic LR value
> * push the callee-saves registers in certain cases
> * clear registers when taking non-secure exceptions to avoid
> leaking information from the interrupted secure code
> * switch to the correct security state on entry
> * use the vector table for the security state we're targeting
>
> Signed-off-by: Peter Maydell <address@hidden>
> ---
> target/arm/helper.c | 165
> +++++++++++++++++++++++++++++++++++++++++++++-------
> 1 file changed, 145 insertions(+), 20 deletions(-)
Reviewed-by: Richard Henderson <address@hidden>
r~
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