From patchwork Sun May 15 14:13:18 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aurelien Jarno X-Patchwork-Id: 95622 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 2A8DDB6F00 for ; Mon, 16 May 2011 00:16:00 +1000 (EST) Received: from localhost ([::1]:43361 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QLc6v-0003te-7w for incoming@patchwork.ozlabs.org; Sun, 15 May 2011 10:15:57 -0400 Received: from eggs.gnu.org ([140.186.70.92]:34615) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QLc4Y-0008Vx-8W for qemu-devel@nongnu.org; Sun, 15 May 2011 10:13:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QLc4X-0007i8-7r for qemu-devel@nongnu.org; Sun, 15 May 2011 10:13:30 -0400 Received: from hall.aurel32.net ([88.191.126.93]:42084) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QLc4X-0007hm-35 for qemu-devel@nongnu.org; Sun, 15 May 2011 10:13:29 -0400 Received: from [2001:470:d4ed:0:5e26:aff:fe2b:6f5b] (helo=volta.aurel32.net) by hall.aurel32.net with esmtpsa (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.72) (envelope-from ) id 1QLc4W-0005xC-Dv; Sun, 15 May 2011 16:13:28 +0200 Received: from aurel32 by volta.aurel32.net with local (Exim 4.72) (envelope-from ) id 1QLc4S-000251-5V; Sun, 15 May 2011 16:13:24 +0200 From: Aurelien Jarno To: qemu-devel@nongnu.org Date: Sun, 15 May 2011 16:13:18 +0200 Message-Id: <1305468801-6015-9-git-send-email-aurelien@aurel32.net> X-Mailer: git-send-email 1.7.2.3 In-Reply-To: <1305468801-6015-1-git-send-email-aurelien@aurel32.net> References: <1305468801-6015-1-git-send-email-aurelien@aurel32.net> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 88.191.126.93 Cc: Aurelien Jarno Subject: [Qemu-devel] [PATCH 08/11] target-i386: cleanup helper_fxam_ST0() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Rewrite helper_fxam_ST0() using only softfloat functions. Signed-off-by: Aurelien Jarno --- target-i386/op_helper.c | 30 ++++++++++++------------------ 1 files changed, 12 insertions(+), 18 deletions(-) diff --git a/target-i386/op_helper.c b/target-i386/op_helper.c index cec0c76..8ba2b5f 100644 --- a/target-i386/op_helper.c +++ b/target-i386/op_helper.c @@ -4241,29 +4241,23 @@ void helper_fcos(void) void helper_fxam_ST0(void) { - CPU_LDoubleU temp; - int expdif; - - temp.d = ST0; - env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ - if (SIGND(temp)) + + if (floatx80_is_neg(ST0)) { env->fpus |= 0x200; /* C1 <-- 1 */ + } /* XXX: test fptags too */ - expdif = EXPD(temp); - if (expdif == MAXEXPD) { - if (MANTD(temp) == 0x8000000000000000ULL) - env->fpus |= 0x500 /*Infinity*/; - else - env->fpus |= 0x100 /*NaN*/; - } else if (expdif == 0) { - if (MANTD(temp) == 0) - env->fpus |= 0x4000 /*Zero*/; - else - env->fpus |= 0x4400 /*Denormal*/; + if (floatx80_is_infinity(ST0)) { + env->fpus |= 0x500; /* (C3,C2,C0) <-- 011 */ + } else if (floatx80_is_any_nan(ST0)) { + env->fpus |= 0x100; /* (C3,C2,C0) <-- 001 */ + } else if (floatx80_is_zero(ST0)) { + env->fpus |= 0x4000; /* (C3,C2,C0) <-- 100 */ + } else if (floatx80_is_zero_or_denormal(ST0)) { + env->fpus |= 0x4400; /* (C3,C2,C0) <-- 110 */ } else { - env->fpus |= 0x400; + env->fpus |= 0x400; /* (C3,C2,C0) <-- 010 */ } }