From patchwork Thu May 23 23:07:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicholas Piggin X-Patchwork-Id: 1938626 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=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=TeT9MTxB; 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-ppc-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 4VlkSd2Xxzz20KL for ; Fri, 24 May 2024 09:11:29 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sAHaJ-0005cL-4o; Thu, 23 May 2024 19:10:55 -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 1sAHZn-0003Ht-Et; Thu, 23 May 2024 19:10:23 -0400 Received: from mail-pf1-x430.google.com ([2607:f8b0:4864:20::430]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sAHZl-00069i-67; Thu, 23 May 2024 19:10:22 -0400 Received: by mail-pf1-x430.google.com with SMTP id d2e1a72fcca58-6f8e98760fcso294244b3a.1; Thu, 23 May 2024 16:10:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1716505819; x=1717110619; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=+EaHAd1VEjGNrQj/hLueMBN/H6aC/VxSDZI3s/nISqI=; b=TeT9MTxBL6OKZUtjOgGEE6oYu9mecNhioyvDJjJwHT9TpxDwOacT0Av/wRyUcOxOgv mGTXY1w7qSgp23umSvHI+lvQctdrfBgeBDRu5sqwpFJdtLWLPC5t8AyJ5Pw7Xqc27KoB 5Qe7vZacjziId2sbCkezEqyDHqFLiY+dIxPrSDPj6TKpvYXzgwttH6Enx+94UMA+rCmW dCN3f56HhVWGP9JOJII9fxUjwlZUukIaFBr96auLcHu1B8z5yR04+b72nHThCoi9P9pn E6MIaaQzfnd6k3zkhBcqHiIYL5g1mrxDv1u//Tnubfdng3+l4qc51dYMB2B/xYJI+o14 SlSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716505819; x=1717110619; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=+EaHAd1VEjGNrQj/hLueMBN/H6aC/VxSDZI3s/nISqI=; b=fAkHteP/nioxzzq4BoWpAIL4Y4BL37hsem0AQYJGjdJJ6A0OhCu2A5aX+6eKczwWM7 Xr8GVBfzxRAgyIUEJ87ydUlJaFEwRLenbr2ftdbDWqJyY4oTbXb/Nc5tX8GqbzNKuoWm zVm0JpMLBJk8l4rqF4XnxtlvK2Mz/sosAH9Twb590YQCP0pSsheKpuwEKLbNQyRvthSe qYGY1ECH7Jrc7D/5JyIRgl3wYIJYTqTn+VuwIZnu+4Cr4wPBqzyBhOyp3NB2AhjIQ1JJ /nQsKhmWQYi6Q23J7DjgPctKiAiSjIYrlNtjT40hsoGbcHjo2HkXYf+ZGawobU6PUvwZ MpPA== X-Forwarded-Encrypted: i=1; AJvYcCXzQCi82XOicJXXNsBHE3FMfwgJNuh5Q41lK7w8CLuaKnrqu5VFrDfQ29o/oRJSVR8nQsSIH2EyA1647cYDNoXQj19h X-Gm-Message-State: AOJu0YwXGq2JwriR2ciiK1JUWrvmAFVOimiJLNbEIbOwTiIoSvGz8x+3 hSwxk2zfsovefcwpEVVYmSsMkH64YcWUar/gw4IUw5xtMVzUrs4FzM8SCg== X-Google-Smtp-Source: AGHT+IG3XPiBjXTdOau+XFqZmwzf+j9tFNm9b4AOklbMxsJgeh7FCGcwpAPIuLRKmZQKA9OTOhiwRA== X-Received: by 2002:a05:6a21:6d81:b0:1af:cd4a:212a with SMTP id adf61e73a8af0-1b212cbcee3mr1230933637.1.1716505819042; Thu, 23 May 2024 16:10:19 -0700 (PDT) Received: from wheely.local0.net (110-175-65-7.tpgi.com.au. [110.175.65.7]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-682227f1838sm87041a12.46.2024.05.23.16.10.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 May 2024 16:10:18 -0700 (PDT) From: Nicholas Piggin To: qemu-devel@nongnu.org Cc: Nicholas Piggin , qemu-ppc@nongnu.org, BALATON Zoltan Subject: [PULL 46/72] target/ppc/mmu_common.c: Move else branch to avoid large if block Date: Fri, 24 May 2024 09:07:19 +1000 Message-ID: <20240523230747.45703-47-npiggin@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240523230747.45703-1-npiggin@gmail.com> References: <20240523230747.45703-1-npiggin@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::430; envelope-from=npiggin@gmail.com; helo=mail-pf1-x430.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, FREEMAIL_FROM=0.001, 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-ppc@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-ppc-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-ppc-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: BALATON Zoltan In mmu6xx_get_physical_address() we have a large if block with a two line else branch that effectively returns. Invert the condition and move the else there to allow deindenting the large if block to make the flow easier to follow. Reviewed-by: Nicholas Piggin Signed-off-by: BALATON Zoltan Signed-off-by: Nicholas Piggin --- target/ppc/mmu_common.c | 71 ++++++++++++++++++++--------------------- 1 file changed, 34 insertions(+), 37 deletions(-) diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c index b7c07cf515..ba60b4902b 100644 --- a/target/ppc/mmu_common.c +++ b/target/ppc/mmu_common.c @@ -405,47 +405,44 @@ static int mmu6xx_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx, ret = -1; if (!ds) { /* Check if instruction fetch is allowed, if needed */ - if (type != ACCESS_CODE || ctx->nx == 0) { - /* Page address translation */ - qemu_log_mask(CPU_LOG_MMU, "htab_base " HWADDR_FMT_plx - " htab_mask " HWADDR_FMT_plx - " hash " HWADDR_FMT_plx "\n", - ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); - ctx->hash[0] = hash; - ctx->hash[1] = ~hash; - - /* Initialize real address with an invalid value */ - ctx->raddr = (hwaddr)-1ULL; - /* Software TLB search */ - ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); + if (type == ACCESS_CODE && ctx->nx) { + qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); + return -3; + } + /* Page address translation */ + qemu_log_mask(CPU_LOG_MMU, "htab_base " HWADDR_FMT_plx " htab_mask " + HWADDR_FMT_plx " hash " HWADDR_FMT_plx "\n", + ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu), hash); + ctx->hash[0] = hash; + ctx->hash[1] = ~hash; + + /* Initialize real address with an invalid value */ + ctx->raddr = (hwaddr)-1ULL; + /* Software TLB search */ + ret = ppc6xx_tlb_check(env, ctx, eaddr, access_type); #if defined(DUMP_PAGE_TABLES) - if (qemu_loglevel_mask(CPU_LOG_MMU)) { - CPUState *cs = env_cpu(env); - hwaddr curaddr; - uint32_t a0, a1, a2, a3; - - qemu_log("Page table: " HWADDR_FMT_plx " len " HWADDR_FMT_plx - "\n", ppc_hash32_hpt_base(cpu), - ppc_hash32_hpt_mask(cpu) + 0x80); - for (curaddr = ppc_hash32_hpt_base(cpu); - curaddr < (ppc_hash32_hpt_base(cpu) - + ppc_hash32_hpt_mask(cpu) + 0x80); - curaddr += 16) { - a0 = ldl_phys(cs->as, curaddr); - a1 = ldl_phys(cs->as, curaddr + 4); - a2 = ldl_phys(cs->as, curaddr + 8); - a3 = ldl_phys(cs->as, curaddr + 12); - if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { - qemu_log(HWADDR_FMT_plx ": %08x %08x %08x %08x\n", - curaddr, a0, a1, a2, a3); - } + if (qemu_loglevel_mask(CPU_LOG_MMU)) { + CPUState *cs = env_cpu(env); + hwaddr curaddr; + uint32_t a0, a1, a2, a3; + + qemu_log("Page table: " HWADDR_FMT_plx " len " HWADDR_FMT_plx "\n", + ppc_hash32_hpt_base(cpu), ppc_hash32_hpt_mask(cpu) + 0x80); + for (curaddr = ppc_hash32_hpt_base(cpu); + curaddr < (ppc_hash32_hpt_base(cpu) + + ppc_hash32_hpt_mask(cpu) + 0x80); + curaddr += 16) { + a0 = ldl_phys(cs->as, curaddr); + a1 = ldl_phys(cs->as, curaddr + 4); + a2 = ldl_phys(cs->as, curaddr + 8); + a3 = ldl_phys(cs->as, curaddr + 12); + if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) { + qemu_log(HWADDR_FMT_plx ": %08x %08x %08x %08x\n", + curaddr, a0, a1, a2, a3); } } -#endif - } else { - qemu_log_mask(CPU_LOG_MMU, "No access allowed\n"); - ret = -3; } +#endif } else { qemu_log_mask(CPU_LOG_MMU, "direct store...\n"); /* Direct-store segment : absolutely *BUGGY* for now */