From patchwork Mon Oct 23 18:13:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 1853966 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=Um4GTz+k; dkim-atps=neutral Authentication-Results: legolas.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=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4SDk130CGTz23jZ for ; Tue, 24 Oct 2023 05:16:55 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1quzRD-0005if-No; Mon, 23 Oct 2023 14:14:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1quzR3-0005bo-98 for qemu-devel@nongnu.org; Mon, 23 Oct 2023 14:13:54 -0400 Received: from mail-pf1-x42e.google.com ([2607:f8b0:4864:20::42e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1quzR1-0008Fy-Hc for qemu-devel@nongnu.org; Mon, 23 Oct 2023 14:13:52 -0400 Received: by mail-pf1-x42e.google.com with SMTP id d2e1a72fcca58-6be0277c05bso2742232b3a.0 for ; Mon, 23 Oct 2023 11:13:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1698084830; x=1698689630; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=Gscgf9TaNURfjEVsbC8XIQGIbXkPOrKC3iA1FwA6PsE=; b=Um4GTz+kCDi3H0tlkAzuVnTq87askO17lX831qVy23K3DUonU4YnGTxDrb+L0Pe2gL HYkqVNWXHqCAeRgSjPLq+2pWx9Z2QK4yZaqgYnBYHTelZU8ujQwAPDft4/QLqvKcoubS 6B/NYuRQd70JY8/uwQyJ85AaM7LPwUbdZ6uClUFUsXenIjIL1jaZDRHACXF1qEtj6AVd p2em5Dk6jGv4qFJFNkGZRCBMtMja3UL/JiQrLxFH8Z2VHLCa6/y8y/r2J7PBofF2Ct7X AlSXCJvI0WxgcyPQlkVrEAnUp1D0XIED1UdJSkJ+Bv5N5bXLO5sU+HhuUiX9/uvVE7IB aRww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698084830; x=1698689630; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Gscgf9TaNURfjEVsbC8XIQGIbXkPOrKC3iA1FwA6PsE=; b=JRTXwumfb6cQimjYqDmk6/qihh9vo/lUyV3Yf2USZO4Y87l+KkQ1qiJ7KC5Ck4u3uE GbRMwh7OQGSqS5OpX8vC412asao3VrFWiSNbFcAcUMhbHVoGbCIYzqjIQw6TET4+2zvw dxwndl3q8sKNzHrgBGk38jErEznNOpKFxH6hvfZ5r1fgDDhQUnR2heqzwSHyEMRiUsoM s4JB2Qj6j/Gj134atQGpwYgdu7M6DRX6ypT1mEmpJR8zQmk0aL/2Tj+TVJjq86K0zrs0 CBBYMog+6Vhq6vMddlvT7SwdRpU2jYv/7Jfq2tK/UGNIpGeT5Lr9AgBTs2UMvg1wpkRS JyIA== X-Gm-Message-State: AOJu0YxyCjBnVUbyEXsSeVEgX8vJjb/TtVWWTaHOUhaqRCSx4fzADj4N jRLvnDvetsbeQfrkmgxe6EXXj5z1Ytf3WGa23GA= X-Google-Smtp-Source: AGHT+IEb2uk8dn/hWM7uMkAF42GOpUmouupkz1CnMdL2TNrYA+OQ9h7hSLRK/+B+6mwRgZwYTqrzVg== X-Received: by 2002:a62:f245:0:b0:6bd:b4f1:49e8 with SMTP id y5-20020a62f245000000b006bdb4f149e8mr6922428pfl.2.1698084830348; Mon, 23 Oct 2023 11:13:50 -0700 (PDT) Received: from stoup.. ([71.212.149.95]) by smtp.gmail.com with ESMTPSA id v10-20020a65568a000000b005b83bc255fbsm5205137pgs.71.2023.10.23.11.13.49 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Oct 2023 11:13:49 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL v3 22/38] tcg/riscv: Do not reserve TCG_GUEST_BASE_REG for guest_base zero Date: Mon, 23 Oct 2023 11:13:13 -0700 Message-Id: <20231023181329.171490-23-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231023181329.171490-1-richard.henderson@linaro.org> References: <20231023181329.171490-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::42e; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42e.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: 2.1.29 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 Fixes: 92c041c59b ("tcg/riscv: Add the prologue generation and register the JIT") Signed-off-by: Richard Henderson --- tcg/riscv/tcg-target.c.inc | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc index d6dbcaf3cb..dc71f829d1 100644 --- a/tcg/riscv/tcg-target.c.inc +++ b/tcg/riscv/tcg-target.c.inc @@ -2076,8 +2076,10 @@ static void tcg_target_qemu_prologue(TCGContext *s) } #if !defined(CONFIG_SOFTMMU) - tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base); - tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); + if (guest_base) { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base); + tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); + } #endif /* Call generated code */