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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4318b57b051sm50104535e9.42.2024.10.25.07.13.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Oct 2024 07:13:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1729865583; x=1730470383; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=+dIJNAUGIBKPluHUtywmy4VA6hHxALG+WEgmCVMe7gU=; b=Ac1bPSncqcqgIIWgKjIeAPAATfd3+ryGVtkFPoIvtdFNAqeUlp8TmG0HEy1TXYHf3k jfBhHNU9PDyE4S+zqNi9cjA5FTXRve9uKqk1eB8uyQNtmWfH6KaCpWpX4ZKNVzBThRW3 R69Pye7YYIe1wHN4tZ08CqJJPoi1ubNdQ1z9klpx/JWmy5FUHiwOfIoC+EWic63bueQd tvnB4LnZDeOlW6yRSjAGXu/Mu/stZqLnvSxr1QXTCKkdM9OJJgrFv7l2/uJpCzKZbTBA gh56Ys9eMbBKcjnDEMT3N+yRej/sDSzBEGgDkQ9fJJR6yQNcgdpfiBZIBJA/ye+4QGin 9U8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729865583; x=1730470383; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=+dIJNAUGIBKPluHUtywmy4VA6hHxALG+WEgmCVMe7gU=; b=lhHEsI/MXx0GpPW8Z4hRrwdLTVZWemEyFxXK/fWZ+CNdSWJnN6DqPEfmZhzhrS5qqU MLxgMJALRMoOGnhujtsjE5MOIsFndXa8bYZsm2ABPSyiFlaDdi8jtqR3zYRDylm9Iky5 jADf3R4I/enGe3NrrV+NUDrRjjmWQIIyvHQ3xTItOxTj8yn+kntxI6bR3+v0Kzq2MlTf NzCqq/kHR63uzTV7vF5slMemAeeDSyx+vJ2JR1vIq1RGzc2RKxctMi44PI2yks92FU2l pTHGpga8RYxAnT8gM8dAR2Th4l29Y0FRz2NwOXh4TlUBLNy7N8yvx869HwUkyXjcZLQ0 gxNg== X-Forwarded-Encrypted: i=1; AJvYcCW4r7SfarZE4nnZYvKSXEGAj/gsAXniy61sRwRDYc+psoAbiY+6qp3kUdhYqRnswvmVt4MDCyvfs9in@nongnu.org X-Gm-Message-State: AOJu0Yx9DPZ2YF5gYxmGAzYnqtpd2BWk3MtBmVw60iKXL/qa6eZZr8cd s7rURsAe9uY1SxpABiFzqX54z7mwcUdrO+gSAlanuzEIhJ8W3XeemqInmMpWcBA= X-Google-Smtp-Source: AGHT+IFcA8oxoQEOawvv97SeiVR3If+e/2yvc0iinLIy6uEef3JELIn/jzXfhO2X0gtQUx9yM0jyIw== X-Received: by 2002:a05:600c:4694:b0:431:5f55:28ad with SMTP id 5b1f17b1804b1-43191349709mr34138735e9.22.1729865583374; Fri, 25 Oct 2024 07:13:03 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Richard Henderson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Song Gao , Eduardo Habkost , "Edgar E. Iglesias" , Jiaxun Yang , Aleksandar Rikalo , Stafford Horne , Nicholas Piggin , Daniel Henrique Barboza , Yoshinori Sato , David Hildenbrand , Ilya Leoshkevich , Thomas Huth , Mark Cave-Ayland , Artyom Tarasenko , Max Filippov , qemu-ppc@nongnu.org, qemu-s390x@nongnu.org Subject: [PATCH 08/21] target/ppc: Explicitly set 2-NaN propagation rule Date: Fri, 25 Oct 2024 15:12:41 +0100 Message-Id: <20241025141254.2141506-9-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241025141254.2141506-1-peter.maydell@linaro.org> References: <20241025141254.2141506-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32e; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x32e.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=unavailable 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1729865730849116600 Content-Type: text/plain; charset="utf-8" Set the 2-NaN propagation rule explicitly in env->fp_status and env->vec_status. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- As an aside, it looks a bit suspicious that we set tininess_before_rounding on fp_status but not vec_status... --- target/ppc/cpu_init.c | 8 ++++++++ fpu/softfloat-specialize.c.inc | 10 ++-------- 2 files changed, 10 insertions(+), 8 deletions(-) diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c index 23881d09e9f..5c9dcd1f857 100644 --- a/target/ppc/cpu_init.c +++ b/target/ppc/cpu_init.c @@ -7326,6 +7326,14 @@ static void ppc_cpu_reset_hold(Object *obj, ResetTyp= e type) /* tininess for underflow is detected before rounding */ set_float_detect_tininess(float_tininess_before_rounding, &env->fp_status); + /* + * PowerPC propagation rules: + * 1. A if it sNaN or qNaN + * 2. B if it sNaN or qNaN + * A signaling NaN is always silenced before returning it. + */ + set_float_2nan_prop_rule(float_2nan_prop_ab, &env->fp_status); + set_float_2nan_prop_rule(float_2nan_prop_ab, &env->vec_status); =20 for (i =3D 0; i < ARRAY_SIZE(env->spr_cb); i++) { ppc_spr_t *spr =3D &env->spr_cb[i]; diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc index a0c740e544d..8e3124c11a6 100644 --- a/fpu/softfloat-specialize.c.inc +++ b/fpu/softfloat-specialize.c.inc @@ -404,15 +404,9 @@ static int pickNaN(FloatClass a_cls, FloatClass b_cls, || defined(TARGET_RISCV) || defined(TARGET_SH4) \ || defined(TARGET_TRICORE) || defined(TARGET_ARM) || defined(TARGET_MI= PS) \ || defined(TARGET_LOONGARCH64) || defined(TARGET_HPPA) \ - || defined(TARGET_S390X) + || defined(TARGET_S390X) || defined(TARGET_PPC) g_assert_not_reached(); -#elif defined(TARGET_PPC) || defined(TARGET_M68K) - /* - * PowerPC propagation rules: - * 1. A if it sNaN or qNaN - * 2. B if it sNaN or qNaN - * A signaling NaN is always silenced before returning it. - */ +#elif defined(TARGET_M68K) /* * M68000 FAMILY PROGRAMMER'S REFERENCE MANUAL * 3.4 FLOATING-POINT INSTRUCTION DETAILS --=20 2.34.1