From patchwork Sat Jul 11 11:06:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Max Filippov X-Patchwork-Id: 1327295 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=U5IVNUF1; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 4B3nL701Jqz9sRR for ; Sat, 11 Jul 2020 21:11:58 +1000 (AEST) Received: from localhost ([::1]:48024 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1juDQC-0002va-Mp for incoming@patchwork.ozlabs.org; Sat, 11 Jul 2020 07:11:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52724) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1juDMM-0004Yc-Fq for qemu-devel@nongnu.org; Sat, 11 Jul 2020 07:07:58 -0400 Received: from mail-pl1-x641.google.com ([2607:f8b0:4864:20::641]:43088) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1juDMK-0006Np-U5 for qemu-devel@nongnu.org; Sat, 11 Jul 2020 07:07:58 -0400 Received: by mail-pl1-x641.google.com with SMTP id x8so3294775plm.10 for ; Sat, 11 Jul 2020 04:07:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=R0mDmcoY1c/T6ValqPe48xOd9C3NnWvFmUKnHSHnR6s=; b=U5IVNUF1v1ZRNszumu/BmY2RU7Q5y7Mq+c5Rsvb73555YghxW4FsthwtvHmLrgIjhL Ug7+u/hPUFCzD8H8zOde5ffLb6h9vkJ2rZVIh30i7d6YvvauVAdB9zirnBPqktInCHSW LJyXdGk6DFhvhBDII2aDwUxf3f00+XJDcln33ttZVWXWfHRRFj1vtvrZ5SkGrDLUswtw LhFn680Q007n03uzemaxuO7K95JiXmQ82ebHWy5oxINELySQCHxXHztzybhZY2qst/H/ 14MUu0U6YJcSuwlwjX2g8ftvSL8mXJaPAvK18PP2d3YC03WzXf/EHeJNWAbaHSvdQfrJ XkHA== 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:mime-version:content-transfer-encoding; bh=R0mDmcoY1c/T6ValqPe48xOd9C3NnWvFmUKnHSHnR6s=; b=nenpKPSCbNmGLStSCaip1oyOkq8jGdoCkkQ2dCZ1GHEZl1LTZ0wXIFdR6HRyzraeOz ++PlXDhAQqbvDObuMtnRHUn+kP4yDcPgxxQB8+Q+6I2hcg2QdBWxixa38smN0Ocu2iA+ Ie5nC4oyu4gjf5IZo7/7F478tMIj4kExpNi5m/cTdUD9KWPGNj0N83ZgJH2BcvAZqTCT 7/ns1HcSMnw0MEVttCe2v+cf97hfGucWjps7FlRsgAaJw/PqU8b5C27UA5slK2sg1IvE dcNFYUOWXJWknHWrsNUIspfymy3yr20/79KPDnNqf7Sa9cnMOb3UiTugmDaLX1k46svq r99Q== X-Gm-Message-State: AOAM530SaOW+3HlmcZQFX6dkRyi1qFqpzYsR/aiItfFQxnE2OEtid1Tf NLgTMoZGzl2J1yC33Qjg3IzodFch X-Google-Smtp-Source: ABdhPJw78i50m5vqnLUYZlYzJGJD7LRNgVuWuMQUhoNmk9PPDyAThIMCV2h2XC0wPSOqOSM5m8rnVg== X-Received: by 2002:a17:90a:d587:: with SMTP id v7mr10745660pju.29.1594465675460; Sat, 11 Jul 2020 04:07:55 -0700 (PDT) Received: from octofox.hsd1.ca.comcast.net ([2601:641:400:e00:19b7:f650:7bbe:a7fb]) by smtp.gmail.com with ESMTPSA id m31sm8925826pjb.52.2020.07.11.04.07.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 11 Jul 2020 04:07:54 -0700 (PDT) From: Max Filippov To: qemu-devel@nongnu.org Subject: [PATCH v4 09/22] target/xtensa: add DFPU option Date: Sat, 11 Jul 2020 04:06:44 -0700 Message-Id: <20200711110655.20287-10-jcmvbkbc@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200711110655.20287-1-jcmvbkbc@gmail.com> References: <20200711110655.20287-1-jcmvbkbc@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::641; envelope-from=jcmvbkbc@gmail.com; helo=mail-pl1-x641.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 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, FREEMAIL_FROM=0.001, FROM_LOCAL_NOVOWEL=0.5, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: Max Filippov , Richard Henderson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Double precision floating point unit is a FPU implementation different from the FPU2000 in the following ways: - it may be configured with only single or with both single and double precision operations support; - it may be configured with division and square root opcodes; - FSR register accumulates inValid, division by Zero, Overflow, Underflow and Inexact result flags of operations; - QNaNs and SNaNs are handled properly; - NaN propagation rules are different. Signed-off-by: Max Filippov --- Changes v3->v4: - new patch split from the next one target/xtensa/cpu.h | 2 ++ target/xtensa/overlay_tool.h | 23 +++++++++++++++++++++++ 2 files changed, 25 insertions(+) diff --git a/target/xtensa/cpu.h b/target/xtensa/cpu.h index 960f6573447f..6fc1565000b6 100644 --- a/target/xtensa/cpu.h +++ b/target/xtensa/cpu.h @@ -52,6 +52,8 @@ enum { XTENSA_OPTION_COPROCESSOR, XTENSA_OPTION_BOOLEAN, XTENSA_OPTION_FP_COPROCESSOR, + XTENSA_OPTION_DFP_COPROCESSOR, + XTENSA_OPTION_DFPU_SINGLE_ONLY, XTENSA_OPTION_MP_SYNCHRO, XTENSA_OPTION_CONDITIONAL_STORE, XTENSA_OPTION_ATOMCTL, diff --git a/target/xtensa/overlay_tool.h b/target/xtensa/overlay_tool.h index eb9f08af0bf6..9f0846c86b65 100644 --- a/target/xtensa/overlay_tool.h +++ b/target/xtensa/overlay_tool.h @@ -39,6 +39,26 @@ #define XCHAL_HAVE_DEPBITS 0 #endif +#ifndef XCHAL_HAVE_DFP +#define XCHAL_HAVE_DFP 0 +#endif + +#ifndef XCHAL_HAVE_DFPU_SINGLE_ONLY +#define XCHAL_HAVE_DFPU_SINGLE_ONLY 0 +#endif + +#ifndef XCHAL_HAVE_DFPU_SINGLE_DOUBLE +#define XCHAL_HAVE_DFPU_SINGLE_DOUBLE XCHAL_HAVE_DFP +#endif + +/* + * We need to know the type of FP unit, not only its precision. + * Unfortunately XCHAL macros don't tell this explicitly. + */ +#define XCHAL_HAVE_DFPU (XCHAL_HAVE_DFP || \ + XCHAL_HAVE_DFPU_SINGLE_ONLY || \ + XCHAL_HAVE_DFPU_SINGLE_DOUBLE) + #ifndef XCHAL_HAVE_DIV32 #define XCHAL_HAVE_DIV32 0 #endif @@ -99,6 +119,9 @@ XCHAL_OPTION(XCHAL_HAVE_CP, XTENSA_OPTION_COPROCESSOR) | \ XCHAL_OPTION(XCHAL_HAVE_BOOLEANS, XTENSA_OPTION_BOOLEAN) | \ XCHAL_OPTION(XCHAL_HAVE_FP, XTENSA_OPTION_FP_COPROCESSOR) | \ + XCHAL_OPTION(XCHAL_HAVE_DFPU, XTENSA_OPTION_DFP_COPROCESSOR) | \ + XCHAL_OPTION(XCHAL_HAVE_DFPU_SINGLE_ONLY, \ + XTENSA_OPTION_DFPU_SINGLE_ONLY) | \ XCHAL_OPTION(XCHAL_HAVE_RELEASE_SYNC, XTENSA_OPTION_MP_SYNCHRO) | \ XCHAL_OPTION(XCHAL_HAVE_S32C1I, XTENSA_OPTION_CONDITIONAL_STORE) | \ XCHAL_OPTION(((XCHAL_HAVE_S32C1I && XCHAL_HW_VERSION >= 230000) || \