From nobody Wed Nov 19 04:36:58 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1614313420; cv=none; d=zohomail.com; s=zohoarc; b=hTg8lSt7cxnxfI9i8KJtIW0XyAaldxkrYWZkoTx1iY2mVYyjNgdInFQqA6ch729RZgK/swjDcb7k6hK9152UYaHUDd+vH7uq9XnALeCewVKBHjqQcEIQI+S/E6I7muBXDWdnw8K/o9diI39OJO8o/InMpjB1J0fVwbA/8Qk0Bmw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1614313420; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=1K63dT0Tzdrjase8N2euXunPRGBjKAQzEzf7DeO2+d8=; b=dgzIQLCMnkgm0MqmMb46NS4UKhvMd7CL7gyq2jefAe4d1s6UuyxSuD4wQD4ZZXfLZH6hj6StoDh+g4MJWIHHCLjaxQVcjMQzKXLEl41Ypqv52FOl7mHTAS1ZynDK/gteev1/8palLB1JK3m4LJy+ioh7xJfGeKuFRRheGl+fOVU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1614313420885669.8442765429885; Thu, 25 Feb 2021 20:23:40 -0800 (PST) Received: from localhost ([::1]:34998 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lFUfD-000870-PQ for importer@patchew.org; Thu, 25 Feb 2021 23:23:39 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:36072) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lFTkg-00037k-Tl for qemu-devel@nongnu.org; Thu, 25 Feb 2021 22:25:16 -0500 Received: from mail-pf1-x42a.google.com ([2607:f8b0:4864:20::42a]:35780) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lFTkc-0002rP-PJ for qemu-devel@nongnu.org; Thu, 25 Feb 2021 22:25:13 -0500 Received: by mail-pf1-x42a.google.com with SMTP id j24so5332030pfi.2 for ; Thu, 25 Feb 2021 19:25:09 -0800 (PST) Received: from frankchang-ThinkPad-T490.internal.sifive.com (114-34-229-221.HINET-IP.hinet.net. [114.34.229.221]) by smtp.gmail.com with ESMTPSA id p11sm7083709pjb.31.2021.02.25.19.25.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Feb 2021 19:25:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=1K63dT0Tzdrjase8N2euXunPRGBjKAQzEzf7DeO2+d8=; b=aJF4UHKwOgKUdbPfjg0e2zm+un6zwqRncRfxpp1WkTvXbTFnb83Uv9vh0PdrR7TfH+ ppP+HeCge+k+AKJodO/Xsxctw17ets4xj/YwImNAS62fitYFh+XLOU/szr0a62r8QNhn rGtJ2nydgTluMi4BV6U7sgcDHx0wAC2M8c6hJPCo28wyaEe3H8TWGL+ZVDzInO3Oa4FH LMl3XHugiqLfDcw0mMseNzlf3XCSu1RD6IfEnKyBYE4Vg3/oM+KqzcggrSCIBfiuMvt6 nhd82LBOG6mgX2FLRK4KbNf+fyW7yO4er99lADotit0djv2B0UN3UDLA2ehOFUqJC0HL jEDQ== 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:in-reply-to :references; bh=1K63dT0Tzdrjase8N2euXunPRGBjKAQzEzf7DeO2+d8=; b=X5b2MQk2jbWO637JM9hMkyZw6+tlPZa/6qZqkGUNU1dxTS9kEmwVkqWPm9EVHNiVJK gT5N4eClRWDY0CzEnD6Nvmlc2gyVEZd5RP51wovvQ7kJbEEtTBxdkL33CVjZCuyAwDaq WR607TypxXxgP52oohlihbP/o5IsHn2h4ZgqbY+oRdEeLIyi1BDR9c3gwcP/ZwHJtiRj xYKyG95ow0N26BWMTTCdGZzQ9unhiT6rKbRxbIOKqaOO4z8VezA7MrgIDTEViAy/HMCc B2Kzv9Zxg39F/FK7r6zsntYnJceoPCXU3kj2eaHOziZOUYVYWAV1uSUXyWb9zi93XrHm W/OQ== X-Gm-Message-State: AOAM532CZhRR/Dn9jen2XYDwRUuPqyBrAvPoxeNlDRXR0tcC9sDB3d0Z EzgrpW4diYXJ3sVBkG6Ak5bB1XN40MY91Q== X-Google-Smtp-Source: ABdhPJyYwwFESwuuP+RtXJwkTVyD1rHwClYBVfz/nJpzwuD1Rens/Ij1/C2+H9ACGcRAgT6qdqa1TQ== X-Received: by 2002:a63:d144:: with SMTP id c4mr1020250pgj.196.1614309908001; Thu, 25 Feb 2021 19:25:08 -0800 (PST) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH v7 62/75] target/riscv: add "set round to odd" rounding mode helper function Date: Fri, 26 Feb 2021 11:18:46 +0800 Message-Id: <20210226031902.23656-63-frank.chang@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210226031902.23656-1-frank.chang@sifive.com> References: <20210226031902.23656-1-frank.chang@sifive.com> 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=2607:f8b0:4864:20::42a; envelope-from=frank.chang@sifive.com; helo=mail-pf1-x42a.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=ham autolearn_force=no X-Spam_action: no action 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: Frank Chang , Alistair Francis , Palmer Dabbelt , Sagar Karandikar , Bastian Koppelmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Frank Chang helper_set_rounding_mode() is responsible for SIGILL, and "round to odd" should be an interface private to translation, so add a new independent helper_set_rod_rounding_mode(). Signed-off-by: Frank Chang --- target/riscv/fpu_helper.c | 5 +++++ target/riscv/helper.h | 1 + target/riscv/internals.h | 1 + target/riscv/translate.c | 5 +++++ 4 files changed, 12 insertions(+) diff --git a/target/riscv/fpu_helper.c b/target/riscv/fpu_helper.c index ad84aeebc1c..ac3e7b4d08f 100644 --- a/target/riscv/fpu_helper.c +++ b/target/riscv/fpu_helper.c @@ -81,6 +81,11 @@ void helper_set_rounding_mode(CPURISCVState *env, uint32= _t rm) set_float_rounding_mode(softrm, &env->fp_status); } =20 +void helper_set_rod_rounding_mode(CPURISCVState *env) +{ + set_float_rounding_mode(float_round_to_odd, &env->fp_status); +} + static uint64_t do_fmadd_s(CPURISCVState *env, uint64_t rs1, uint64_t rs2, uint64_t rs3, int flags) { diff --git a/target/riscv/helper.h b/target/riscv/helper.h index e11cce3e8ea..1d52936c399 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -3,6 +3,7 @@ DEF_HELPER_2(raise_exception, noreturn, env, i32) =20 /* Floating Point - rounding mode */ DEF_HELPER_FLAGS_2(set_rounding_mode, TCG_CALL_NO_WG, void, env, i32) +DEF_HELPER_FLAGS_1(set_rod_rounding_mode, TCG_CALL_NO_WG, void, env) =20 /* Floating Point - fused */ DEF_HELPER_FLAGS_4(fmadd_s, TCG_CALL_NO_RWG, i64, env, i64, i64, i64) diff --git a/target/riscv/internals.h b/target/riscv/internals.h index 469cc418c4e..6a80c067706 100644 --- a/target/riscv/internals.h +++ b/target/riscv/internals.h @@ -43,6 +43,7 @@ enum { RISCV_FRM_RUP =3D 3, /* Round Up */ RISCV_FRM_RMM =3D 4, /* Round to Nearest, ties to Max Magnitude */ RISCV_FRM_DYN =3D 7, /* Dynamic rounding mode */ + RISCV_FRM_ROD =3D 8, /* Round to Odd */ }; =20 static inline uint64_t nanbox_s(float32 f) diff --git a/target/riscv/translate.c b/target/riscv/translate.c index d9a794d71e8..b9da55c75a8 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -30,6 +30,7 @@ #include "exec/log.h" =20 #include "instmap.h" +#include "internals.h" =20 /* global register indices */ static TCGv cpu_gpr[32], cpu_pc, cpu_vl; @@ -585,6 +586,10 @@ static void gen_set_rm(DisasContext *ctx, int rm) return; } ctx->frm =3D rm; + if (rm =3D=3D RISCV_FRM_ROD) { + gen_helper_set_rod_rounding_mode(cpu_env); + return; + } t0 =3D tcg_const_i32(rm); gen_helper_set_rounding_mode(cpu_env, t0); tcg_temp_free_i32(t0); --=20 2.17.1