Re: [Qemu-devel] [PATCH 23/26] target/arm: Implement M-profile lazy FP state preservation

[Richard Henderson]

On 4/16/19 5:57 AM, Peter Maydell wrote:
> The M-profile architecture floating point system supports
> lazy FP state preservation, where FP registers are not
> pushed to the stack when an exception occurs but are instead
> only saved if and when the first FP instruction in the exception
> handler is executed. Implement this in QEMU, corresponding
> to the check of LSPACT in the pseudocode ExecuteFPCheck().
> 
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  target/arm/cpu.h       |   3 ++
>  target/arm/helper.h    |   2 +
>  target/arm/translate.h |   1 +
>  target/arm/helper.c    | 112 +++++++++++++++++++++++++++++++++++++++++
>  target/arm/translate.c |  22 ++++++++
>  5 files changed, 140 insertions(+)

Reviewed-by: Richard Henderson <address@hidden>


r~