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Re: [Qemu-arm] [Qemu-devel] [PATCH 01/13] target/arm: Define new TBFLAG


From: Richard Henderson
Subject: Re: [Qemu-arm] [Qemu-devel] [PATCH 01/13] target/arm: Define new TBFLAG for v8M stack checking
Date: Wed, 3 Oct 2018 14:51:06 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0

On 10/2/18 11:35 AM, Peter Maydell wrote:
> The Arm v8M architecture includes hardware stack limit checking.
> When certain instructions update the stack pointer, if the new
> value of SP is below the limit set in the associated limit register
> then an exception is taken. Add a TB flag that tracks whether
> the limit-checking code needs to be emitted.
> 
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  target/arm/cpu.h       |  7 +++++++
>  target/arm/translate.h |  1 +
>  target/arm/helper.c    | 10 ++++++++++
>  target/arm/translate.c |  1 +
>  4 files changed, 19 insertions(+)

Reviewed-by: Richard Henderson <address@hidden>

r~




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