Re: [PATCH 3/3] target/arm: Implement v8.4-RCPC

[Richard Henderson]

On 2/24/20 9:28 AM, Peter Maydell wrote:
> The v8.4-RCPC extension implements some new instructions:
>  * LDAPUR, LDAPURB, LDAPURH, LDAPRSB, LDAPRSH, LDAPRSW
>  * STLUR, STLURB, STLURH
> 
> These are all in a new subgroup of encodings that sits below the
> top-level "Loads and Stores" group in the Arm ARM.
> 
> The STLUR* instructions have standard store-release semantics; the
> LDAPUR* have Load-AcquirePC semantics, but (as with LDAPR*) we choose
> to implement them as the slightly stronger Load-Acquire.
> 
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  target/arm/cpu.h           |  5 +++
>  linux-user/elfload.c       |  1 +
>  target/arm/cpu64.c         |  2 +-
>  target/arm/translate-a64.c | 90 ++++++++++++++++++++++++++++++++++++++
>  4 files changed, 97 insertions(+), 1 deletion(-)

Reviewed-by: Richard Henderson <address@hidden>


r~