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Sat, 25 Jan 2025 09:29:32 -0800 (PST) Received: from [192.168.74.94] ([50.200.230.211]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21da414cc20sm34890705ad.165.2025.01.25.09.29.31 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 25 Jan 2025 09:29:31 -0800 (PST) Message-ID: <63ad1ebf-03c0-4bca-b0a9-b70234bea00c@linaro.org> Date: Sat, 25 Jan 2025 09:29:29 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 30/76] target/arm: Adjust exception flag handling for AH = 1 To: qemu-devel@nongnu.org References: <20250124162836.2332150-1-peter.maydell@linaro.org> <20250124162836.2332150-31-peter.maydell@linaro.org> Content-Language: en-US From: Richard Henderson In-Reply-To: <20250124162836.2332150-31-peter.maydell@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x630.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 1/24/25 08:27, Peter Maydell wrote: > When FPCR.AH = 1, some of the cumulative exception flags in the FPSR > behave slightly differently for A64 operations: > * IDC is set when a denormal input is used without flushing > * IXC (Inexact) is set when an output denormal is flushed to zero > > Update vfp_get_fpsr_from_host() to do this. > > Note that because half-precision operations never set IDC, we now > need to add float_flag_input_denormal_used to the set we mask out of > fp_status_f16_a64. > > Signed-off-by: Peter Maydell > --- > target/arm/vfp_helper.c | 17 ++++++++++++++--- > 1 file changed, 14 insertions(+), 3 deletions(-) Reviewed-by: Richard Henderson r~