From patchwork Tue Mar 8 17:42:36 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bastian Koppelmann X-Patchwork-Id: 8536451 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6442C9F372 for ; Tue, 8 Mar 2016 17:43:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C0B69201C8 for ; Tue, 8 Mar 2016 17:43:12 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C667E201C0 for ; Tue, 8 Mar 2016 17:43:11 +0000 (UTC) Received: from localhost ([::1]:36292 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1adLf5-0001yt-6M for patchwork-qemu-devel@patchwork.kernel.org; Tue, 08 Mar 2016 12:43:11 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40889) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1adLep-0001xC-VH for qemu-devel@nongnu.org; Tue, 08 Mar 2016 12:42:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1adLen-0006JD-7i for qemu-devel@nongnu.org; Tue, 08 Mar 2016 12:42:55 -0500 Received: from mail.uni-paderborn.de ([131.234.142.9]:58695) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1adLen-0006Ij-1H for qemu-devel@nongnu.org; Tue, 08 Mar 2016 12:42:53 -0500 From: Bastian Koppelmann To: qemu-devel@nongnu.org Date: Tue, 8 Mar 2016 18:42:36 +0100 Message-Id: <1457458958-23933-6-git-send-email-kbastian@mail.uni-paderborn.de> X-Mailer: git-send-email 2.7.2 In-Reply-To: <1457458958-23933-1-git-send-email-kbastian@mail.uni-paderborn.de> References: <1457458958-23933-1-git-send-email-kbastian@mail.uni-paderborn.de> X-IMT-Spam-Score: 0.0 () X-PMX-Version: 6.2.1.2493963, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2016.3.8.173617 X-IMT-Authenticated-Sender: uid=kbastian,ou=People,o=upb,c=de X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 131.234.142.9 Cc: rth@twiddle.net Subject: [Qemu-devel] [PATCH v2 5/7] target-tricore: Add div.f instruction 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Bastian Koppelmann Reviewed-by: Richard Henderson --- v1 -> v2: - Make exceptional case exceptional target-tricore/fpu_helper.c | 29 +++++++++++++++++++++++++++++ target-tricore/helper.h | 1 + target-tricore/translate.c | 3 +++ 3 files changed, 33 insertions(+) diff --git a/target-tricore/fpu_helper.c b/target-tricore/fpu_helper.c index 80a9472..514ec0c 100644 --- a/target-tricore/fpu_helper.c +++ b/target-tricore/fpu_helper.c @@ -137,3 +137,32 @@ uint32_t helper_fmul(CPUTriCoreState *env, uint32_t r1, uint32_t r2) return (uint32_t)f_result; } + +uint32_t helper_fdiv(CPUTriCoreState *env, uint32_t r1, uint32_t r2) +{ + uint32_t flags; + float32 arg1 = make_float32(r1); + float32 arg2 = make_float32(r2); + float32 f_result; + + arg1 = float32_squash_input_denormal(arg1, &env->fp_status); + arg2 = float32_squash_input_denormal(arg2, &env->fp_status); + + f_result = float32_div(arg1, arg2 , &env->fp_status); + + flags = f_get_excp_flags(env); + if (flags) { + /* If the output is a NaN, but the inputs aren't, + we return a unique value. */ + if ((flags & float_flag_invalid) + && !float32_is_any_nan(arg1) + && !float32_is_any_nan(arg2)) { + f_result = DIV_NAN; + } + f_update_psw_flags(env, flags); + } else { + env->FPU_FS = 0; + } + + return (uint32_t)f_result; +} diff --git a/target-tricore/helper.h b/target-tricore/helper.h index ac41190..f5eff36 100644 --- a/target-tricore/helper.h +++ b/target-tricore/helper.h @@ -108,6 +108,7 @@ DEF_HELPER_1(unpack, i64, i32) DEF_HELPER_3(fadd, i32, env, i32, i32) DEF_HELPER_3(fsub, i32, env, i32, i32) DEF_HELPER_3(fmul, i32, env, i32, i32) +DEF_HELPER_3(fdiv, i32, env, i32, i32) /* dvinit */ DEF_HELPER_3(dvinit_b_13, i64, env, i32, i32) DEF_HELPER_3(dvinit_b_131, i64, env, i32, i32) diff --git a/target-tricore/translate.c b/target-tricore/translate.c index 38ac8d6..6adeebb 100644 --- a/target-tricore/translate.c +++ b/target-tricore/translate.c @@ -6675,6 +6675,9 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx) case OPC2_32_RR_MUL_F: gen_helper_fmul(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]); break; + case OPC2_32_RR_DIV_F: + gen_helper_fdiv(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]); + break; default: generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC); }