From patchwork Wed Feb 2 00:52:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Tomsich X-Patchwork-Id: 1587556 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=vrull.eu header.i=@vrull.eu header.a=rsa-sha256 header.s=google header.b=aw9YwHQr; dkim-atps=neutral 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=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4JpSzZ3qPbz9sFk for ; Wed, 2 Feb 2022 15:11:37 +1100 (AEDT) Received: from localhost ([::1]:53860 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nF6zV-00038c-ML for incoming@patchwork.ozlabs.org; Tue, 01 Feb 2022 23:11:33 -0500 Received: from eggs.gnu.org ([209.51.188.92]:44652) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nF3tN-0000d0-SN for qemu-devel@nongnu.org; Tue, 01 Feb 2022 19:53:02 -0500 Received: from [2a00:1450:4864:20::130] (port=35702 helo=mail-lf1-x130.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nF3tJ-0003DT-KY for qemu-devel@nongnu.org; Tue, 01 Feb 2022 19:53:00 -0500 Received: by mail-lf1-x130.google.com with SMTP id i34so17029226lfv.2 for ; Tue, 01 Feb 2022 16:52:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vrull.eu; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ifyO0U3WU+aEW53usXKonrrqh+2fiZvZX0iSkoogExU=; b=aw9YwHQrX2v+qHDi2TSBRrMNDNKTfOOxiFsHfpvBVaDu7WiNa3Fu/NRLKfBCW2uAxG jWlI9HmKzPz5BULRYWoeUr0vcB2la4GVXYle1K538SxeD7oqG5TiBFybwD255mK1dlYA glcZo4rKFNX/61a2rQyPZn3hS8Y4XPxW96BE8o5VVLrhncXuryoedkbBzBBfGRivP75r oiuL4qwj7J9Ji4EskpGqXdyEzSpiZ2hV7EXXEDsYR60Fc3Txu1kk6+DbpxTcSXq/rg4z 35d1/VSkQegi+N9tzKsS6I+d7QlJynj/DIMtZmi7ickmXkUSE0wWp6cuiUr1gJmPCRu3 z3+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ifyO0U3WU+aEW53usXKonrrqh+2fiZvZX0iSkoogExU=; b=lR89nadN4fGr+rLtN+Iazzrbc5BXCPVsNw0uxr7rglyIUxRHhG3I15dcFLcJVe0rO3 LAajFtOUMtNZtrVscsxx/mzXZTtHFMir3RDZmAEm4+NzgiYW+oDJPamHMgleduv1ZrJp Jjp7GchJN4XpdaPMAAdRqbP/X2lDumv5UAX0R+q/057Q06Grtf3fMKKFlEy7bcxmd371 5T35rjenrVgGtUOsoiypz4+ErLITtliF//od2NMB2K7ciNkvfdK66xIN0A2bU+8TyWTN DXQJrDqPlhyPvxlUJqC9yPFd3U5mad6X+cDVASAP6CLiBYlVjLeNltqixeTUhFb594RT vv0w== X-Gm-Message-State: AOAM532Cd5gXU+I9RWRHByVmAuIbVgBbATN6hg8zwhpeccInIMuqZorn Lz9HW8LlS9nDsierzKEFRkEG/yGmAkiqbSLX X-Google-Smtp-Source: ABdhPJzMUBh2KCx2ge56EzLAxn3ysaed4HWdUMWU46ZdcARDVD9SfJ+18Vo2NfgvIgRE+EmU1j9d4g== X-Received: by 2002:ac2:4c09:: with SMTP id t9mr20610109lfq.406.1643763175011; Tue, 01 Feb 2022 16:52:55 -0800 (PST) Received: from ubuntu-focal.. ([2a01:4f9:3a:1e26::2]) by smtp.gmail.com with ESMTPSA id bt22sm4305297lfb.262.2022.02.01.16.52.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Feb 2022 16:52:54 -0800 (PST) From: Philipp Tomsich To: qemu-devel@nongnu.org Subject: [PATCH v6 2/7] target/riscv: riscv_tr_init_disas_context: copy pointer-to-cfg into cfg_ptr Date: Wed, 2 Feb 2022 01:52:44 +0100 Message-Id: <20220202005249.3566542-3-philipp.tomsich@vrull.eu> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20220202005249.3566542-1-philipp.tomsich@vrull.eu> References: <20220202005249.3566542-1-philipp.tomsich@vrull.eu> MIME-Version: 1.0 X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::130 (failed) Received-SPF: pass client-ip=2a00:1450:4864:20::130; envelope-from=philipp.tomsich@vrull.eu; helo=mail-lf1-x130.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 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, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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: , Cc: Richard Henderson , Kito Cheng , Alistair Francis , Greg Favor , Philipp Tomsich Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" As the number of extensions is growing, copying them individiually into the DisasContext will scale less and less... instead we populate a pointer to the RISCVCPUConfig structure in the DisasContext. This adds an extra indirection when checking for the availability of an extension (compared to copying the fields into DisasContext). While not a performance problem today, we can always (shallow) copy the entire structure into the DisasContext (instead of putting a pointer to it) if this is ever deemed necessary. Signed-off-by: Philipp Tomsich Reviewed-by: Alistair Francis Suggested-by: Richard Henderson Reviewed-by: Richard Henderson --- (no changes since v5) Changes in v5: - use the typedef in DisasContext instead of the nakes struct for RISCVCPUConfig Changes in v3: - (new patch) copy pointer to element cfg into DisasContext target/riscv/translate.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/target/riscv/translate.c b/target/riscv/translate.c index f0bbe80875..49e40735ce 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -76,6 +76,7 @@ typedef struct DisasContext { int frm; RISCVMXL ol; bool virt_enabled; + const RISCVCPUConfig *cfg_ptr; bool ext_ifencei; bool ext_zfh; bool ext_zfhmin; @@ -908,6 +909,7 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) #endif ctx->misa_ext = env->misa_ext; ctx->frm = -1; /* unknown rounding mode */ + ctx->cfg_ptr = &(cpu->cfg); ctx->ext_ifencei = cpu->cfg.ext_ifencei; ctx->ext_zfh = cpu->cfg.ext_zfh; ctx->ext_zfhmin = cpu->cfg.ext_zfhmin;