From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CF6E5EE4993 for ; Mon, 21 Aug 2023 15:59:15 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qY7Ij-0002Az-5H; Mon, 21 Aug 2023 11:58:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qY7Ih-0002Ad-L9 for qemu-devel@nongnu.org; Mon, 21 Aug 2023 11:58:43 -0400 Received: from home.keithp.com ([63.227.221.253] helo=elaine.keithp.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qY7Ie-0001AQ-IJ for qemu-devel@nongnu.org; Mon, 21 Aug 2023 11:58:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=keithp.com; s=mail; t=1692633517; bh=59av9dyf1ZroCB1Rfs04RuXtAb5V+NW3VRfxoekeWCY=; h=From:To:Subject:In-Reply-To:References:Date:From; b=JwRf27OFJn6teRlMFazQGzhnfEgQO/ilB5zDbA7CDFWzRAsuVbdcRAnLGzcZz3nXv 32CUaTkUXFvd2NiL8K3wlfmTLqBeK44e7zmbR9L53lIPOtP4p4g9mhotEBjCY7PkEd RrufFUxZoPhVDoV3GhIXZ/cfHbRHdzxD7R/sWOdbBPNtn1ksn8IoPswKV868Dl+MnD L7JAkfwxb7ds53DzbReFrMheMUEdYy052oU0dqO1VeOZbkzeUWcut6xYXmrimAlkt4 +WTuI3dZJPul+4t6pSsB40/yVtyVa9GouQ3SHPZ4DGX7Df6ul/TmKaIbwQnCqudZPU V5qCkYGD6lZIw== Received: from localhost (localhost [127.0.0.1]) by elaine.keithp.com (Postfix) with ESMTP id 3FEBB3F20D83; Mon, 21 Aug 2023 08:58:37 -0700 (PDT) X-Virus-Scanned: Debian amavis at keithp.com Received: from elaine.keithp.com ([127.0.0.1]) by localhost (elaine.keithp.com [127.0.0.1]) (amavis, port 10024) with LMTP id bWYkMjngnTrQ; Mon, 21 Aug 2023 08:58:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=keithp.com; s=mail; t=1692633516; bh=59av9dyf1ZroCB1Rfs04RuXtAb5V+NW3VRfxoekeWCY=; h=From:To:Subject:In-Reply-To:References:Date:From; b=GRCMqHyRaSYCMBHFbK4CGTvXkTY2Bg3y6urIh7rJChYeWJ0OOoENH1zonzxup45ef 9Psfc0IthelapA03+eMjmmNsdukrtzm3tZBki+sometImZdkxNsSUbhQMGFZIpAj/J gIf7hFQ04S7u1mMh8Jm0SILUYuWojiZI+DxvS127R0wuU2NVIAW/7WZAMtJQLtpR1X pzD7JkUUcb4jUXuurkZU/myaUsQJUCrDUsS8dGb2aCkyWmErh2Dmw8owAtPNOH2Xtm CEUt9q1zU5XyzvldpB5ESvbdcsf5+YzH9glawwLKTmg8TSU+V0u6AzUbFOJW8guKRO Je8aHEMgSFOiA== Received: from keithp.com (unknown [98.97.112.104]) by elaine.keithp.com (Postfix) with ESMTPSA id 4F24B3F20D23; Mon, 21 Aug 2023 08:58:36 -0700 (PDT) Received: by keithp.com (Postfix, from userid 1000) id C50BD1E601E7; Mon, 21 Aug 2023 08:58:36 -0700 (PDT) To: Laurent Vivier , qemu-devel@nongnu.org, Richard Henderson Subject: Re: Funny results with long double denorms on m68k In-Reply-To: References: <87bkf1l9hf.fsf@keithp.com> <75b13a6f-5866-4948-00fb-fbfdb7866e3d@vivier.eu> Date: Mon, 21 Aug 2023 08:58:36 -0700 Message-ID: <871qfwl74j.fsf@keithp.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Received-SPF: pass client-ip=63.227.221.253; envelope-from=keithp@keithp.com; helo=elaine.keithp.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, 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: , Reply-to: Keith Packard From: Keith Packard via Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable > When I developped the FPU emulation I compared the result of QEMU and a r= eal hardware using=20 > https://github.com/vivier/m68k-testfloat and https://github.com/vivier/m6= 8k-softfloat It looks like the second of those has similar issues with m68k denorms? https://github.com/vivier/m68k-softfloat/blob/6ecdd5c9627d02c7502de4acaf54c= 5c5b0a43bdf/softfloat/bits64/softfloat.c#L640 =2D-=20 =2Dkeith --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEw4O3eCVWE9/bQJ2R2yIaaQAAABEFAmTjiawACgkQ2yIaaQAA ABHxmQ/+NVobEm5VLq3H/wwQa++nnzJ7ev1vhJJc5BXuKHgtvFWlT/s9/IWKRSw3 uRDIRA1IkxgFI+PRtmFq7gfGJZOvXdpnR7Nr9XWkI13zPH9SlY51JCgIKaCYmVzc ne89I4HaPvJ+AmsnctqGgUuqgGvbGxeCMbEfWFGb2addIeVAIifxKUkGM01oSTZU 9E64OVxNqmHoZYfGP0QwyxhocHsHo+QSHtbx1KzUhVzigWyoanUhLNqLJROU18aK AGmQq+GMvR+ZJpkzDaQ+47Jgbpr3c+iiFsupyg0TPBN6aHSOJnAUbcMIg/G4lt8+ QKxmqsTghHLiKKblk9spzyzaVoG/O3taNkwDafyeoyU5JpY6SMCzOLxB45f5iGM1 DF6XcTp3Np/QDVz9cZNxg1MJGde514m4Pgn3Ioj3xXt8PI2vTG/i1jtnTBwzoGCG 1HJsZhc1W5e7X2BZoURu3hdjJBvXYR9U3znCxbMJotdAsWTOayulMYOy+2tf2U9e cpfXfc0zA5A46hOuGTVnBbXGYqf2oAvXah9oOkDWB1Xm6OdF+Up5vSIEXqaBsDTy Ryo8ZO56XtyTZJ+RM+w403861qwebvRjFXwYaIiE6WRwbzppFq7ZejpjtgJspxCL y9uvPZNYnNySX1D8VH/oMvt3hLIXRULrMDp0MzIghQgeXGyAr94= =yPaO -----END PGP SIGNATURE----- --=-=-=--