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[222.224.164.52]) by smtp.gmail.com with ESMTPSA id u1sm3844581pfn.133.2020.01.10.13.28.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jan 2020 13:28:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8AYg1chBm/3+FdlYUxpXHIjfTe3u4FtxJXy2WDGRSv0=; b=oUzRlCcp9bapiiBOvv8ocnZ7YGsSBlylxyyJlqWy1HsDqNyZikoLtMlcC7NFaskXRj knq0IiYuXVie7+effr89POiismv9xYptzvDwiDQCqVXiy9M+J/kuz9A0VL42nNtjbWuy gBdHXMFOyYiTUMXnaOE5AbAwbRshwSsPxJPJ3SouKfvWJnl4Ch6t2pXDQONiaDK2Tz39 W8yWFA5qPUC3Pxtuba4t02szOGqBlJmE6k4bMmt05J8rXwo5oRb/u0dWVpFEwvWxijw7 jVqyiEj5DIqMmpxzWnm62mIGAgBaciI8W1Uma3Mp0StjS8s4AhWfZBBffH2CBgqm4B/L AtSQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8AYg1chBm/3+FdlYUxpXHIjfTe3u4FtxJXy2WDGRSv0=; b=f/LYWHDnAuzMwqGldZJ7gCMUFApWJEovN3aMOBDOvMlmJIE4VFzj2VD9Z+xtVsGfse vRymisVkD8coQgzDbId0k5tnDQJgaOuKRgYq8oLOAkvfqL69Mjm6Rh72lg297yOGC5za aL8ymfpVqf8g2tEk0zSnIYuvJYRBtiYHNQ/n0tgOsK5NCm+ywrmvOIwStEbhGT7XWYmH aHBFkwS2K9+gbUhPA9rne2G/Pogk9T63av7JNeh30WhDM3pNWZAg9iv/ecbotUW9+GoE xU3Miv/USZbsn6kXu6vOYlMnBkmdpaMOgmL4/kkv67T4v7QWDS25EjMskLAcPaRYB3tv nONw== X-Gm-Message-State: APjAAAUj06KDK98T+jCpOzx1UbTGDUMKJdy45AjujicWBrNB2XQeQCdm 6GINHArGcgRIYR3cU/6DQo0= X-Google-Smtp-Source: APXvYqzsmjduJWm5gR220qr+f42GOU9/Q7VRiDq1q8hwPme4QfIqP9EsSg9E5kIyu0XllZpLC1aU0A== X-Received: by 2002:a63:4b52:: with SMTP id k18mr6659855pgl.371.1578691736954; Fri, 10 Jan 2020 13:28:56 -0800 (PST) From: Stafford Horne To: shorne@gmail.com Subject: [PATCH] target/openrisc: Fix FPCSR mask to allow setting DZF Date: Sat, 11 Jan 2020 06:28:43 +0900 Message-Id: <20200110212843.27335-1-shorne@gmail.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::543 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Openrisc , QEMU Development , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" The mask used when setting FPCSR allows setting bits 10 to 1. However, OpenRISC has flags and config bits in 11 to 1, 11 being Divide by Zero Flag (DZF). This seems like an off-by-one bug. This was found when testing the GLIBC test suite which has test cases to set and clear all bits. Signed-off-by: Stafford Horne --- target/openrisc/fpu_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/openrisc/fpu_helper.c b/target/openrisc/fpu_helper.c index 59e1413279..6f75ea0505 100644 --- a/target/openrisc/fpu_helper.c +++ b/target/openrisc/fpu_helper.c @@ -70,7 +70,7 @@ void cpu_set_fpcsr(CPUOpenRISCState *env, uint32_t val) float_round_down }; =20 - env->fpcsr =3D val & 0x7ff; + env->fpcsr =3D val & 0xfff; set_float_rounding_mode(rm_to_sf[extract32(val, 1, 2)], &env->fp_statu= s); } =20 --=20 2.21.0