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Re: [PATCH v2 7/9] s390x/tcg: Implement MULTIPLY SINGLE (MSC, MSGC, MSGR


From: Richard Henderson
Subject: Re: [PATCH v2 7/9] s390x/tcg: Implement MULTIPLY SINGLE (MSC, MSGC, MSGRKC, MSRKC)
Date: Thu, 1 Oct 2020 09:54:54 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

On 9/28/20 7:27 AM, David Hildenbrand wrote:
> We need new CC handling, determining the CC based on the intermediate
> result (64bit for MSC and MSRKC, 128bit for MSGC and MSGRKC).
> 
> We want to store out2 ("low") after muls128 to r1, so add
> "wout_out2_r1".
> 
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
>  target/s390x/cc_helper.c   | 32 ++++++++++++++++++++++++++++++++
>  target/s390x/helper.c      |  2 ++
>  target/s390x/insn-data.def |  4 ++++
>  target/s390x/internal.h    |  2 ++
>  target/s390x/translate.c   | 19 +++++++++++++++++++
>  5 files changed, 59 insertions(+)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~



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