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From: Richard Henderson <richard.henderson@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>,
	qemu-arm@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [PATCH 9/9] target/arm: Allow FPCR bits that aren't in FPSCR
Date: Fri, 28 Jun 2024 09:14:24 -0700	[thread overview]
Message-ID: <f078e65c-7e77-469e-8643-033f81026bbc@linaro.org> (raw)
In-Reply-To: <20240628142347.1283015-10-peter.maydell@linaro.org>

On 6/28/24 07:23, Peter Maydell wrote:
> In order to allow FPCR bits that aren't in the FPSCR (like the new
> bits that are defined for FEAT_AFP), we need to make sure that writes
> to the FPSCR only write to the bits of FPCR that are architecturally
> mapped, and not the others.
> 
> Implement this with a new function vfp_set_fpcr_masked() which
> takes a mask of which bits to update.
> 
> (We could do the same for FPSR, but we leave that until we actually
> are likely to need it.)
> 
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> ---
>   target/arm/vfp_helper.c | 54 ++++++++++++++++++++++++++---------------
>   1 file changed, 34 insertions(+), 20 deletions(-)

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

r~


      reply	other threads:[~2024-06-28 16:14 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-06-28 14:23 [PATCH 0/9] target/arm: Refactor FPCR/FPSR handling to prepare for FEAT_AFP Peter Maydell
2024-06-28 14:23 ` [PATCH 1/9] target/arm: Correct comments about M-profile FPSCR Peter Maydell
2024-06-28 14:57   ` Richard Henderson
2024-06-28 14:23 ` [PATCH 2/9] target/arm: Make vfp_get_fpscr() call vfp_get_{fpcr, fpsr} Peter Maydell
2024-06-28 15:37   ` Richard Henderson
2024-06-28 14:23 ` [PATCH 3/9] target/arm: Make vfp_set_fpscr() call vfp_set_{fpcr, fpsr} Peter Maydell
2024-06-28 15:50   ` Richard Henderson
2024-06-28 14:23 ` [PATCH 4/9] target/arm: Support migration when FPSR/FPCR won't fit in the FPSCR Peter Maydell
2024-06-28 16:01   ` Richard Henderson
2024-06-28 16:27     ` Peter Maydell
2024-06-28 14:23 ` [PATCH 5/9] target/arm: Implement store_cpu_field_low32() macro Peter Maydell
2024-06-28 16:02   ` Richard Henderson
2024-06-28 14:23 ` [PATCH 6/9] target/arm: Store FPSR and FPCR in separate CPU state fields Peter Maydell
2024-06-28 16:06   ` Richard Henderson
2024-06-28 14:23 ` [PATCH 7/9] target/arm: Rename FPCR_ QC, NZCV macros to FPSR_ Peter Maydell
2024-06-28 16:07   ` Richard Henderson
2024-06-28 14:23 ` [PATCH 8/9] target/arm: Rename FPSR_MASK and FPCR_MASK and define them symbolically Peter Maydell
2024-06-28 16:12   ` Richard Henderson
2024-06-28 14:23 ` [PATCH 9/9] target/arm: Allow FPCR bits that aren't in FPSCR Peter Maydell
2024-06-28 16:14   ` Richard Henderson [this message]

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