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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-432a3688813sm16354555e9.1.2024.11.05.03.19.47 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Nov 2024 03:19:47 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 18/31] target/microblaze: Explicitly set 2-NaN propagation rule Date: Tue, 5 Nov 2024 11:19:22 +0000 Message-Id: <20241105111935.2747034-19-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241105111935.2747034-1-peter.maydell@linaro.org> References: <20241105111935.2747034-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::630; envelope-from=peter.maydell@linaro.org; helo=mail-ej1-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 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+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org Set the NaN propagation rule explicitly for the float_status word used in the microblaze target. This is probably not the architecturally correct behaviour, but since this is a no-behaviour-change patch, we leave a TODO note to that effect. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-id: 20241025141254.2141506-19-peter.maydell@linaro.org --- target/microblaze/cpu.c | 5 +++++ fpu/softfloat-specialize.c.inc | 3 ++- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c index 6329a774331..14286deead9 100644 --- a/target/microblaze/cpu.c +++ b/target/microblaze/cpu.c @@ -202,6 +202,11 @@ static void mb_cpu_reset_hold(Object *obj, ResetType type) env->pc = cpu->cfg.base_vectors; set_float_rounding_mode(float_round_nearest_even, &env->fp_status); + /* + * TODO: this is probably not the correct NaN propagation rule for + * this architecture. + */ + set_float_2nan_prop_rule(float_2nan_prop_x87, &env->fp_status); #if defined(CONFIG_USER_ONLY) /* start in user mode with interrupts enabled. */ diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index a5c3e2b8de5..40cbb1ab73b 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -406,7 +406,8 @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls, || defined(TARGET_LOONGARCH64) || defined(TARGET_HPPA) \ || defined(TARGET_S390X) || defined(TARGET_PPC) || defined(TARGET_M68K) \ || defined(TARGET_SPARC) || defined(TARGET_XTENSA) \ - || defined(TARGET_I386) || defined(TARGET_ALPHA) + || defined(TARGET_I386) || defined(TARGET_ALPHA) \ + || defined(TARGET_MICROBLAZE) g_assert_not_reached(); #else rule = float_2nan_prop_x87;