From patchwork Sun Oct 20 15:53:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 13843112 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id EB035D3C92A for ; Sun, 20 Oct 2024 15:54:32 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t2YFQ-0003MN-7n; Sun, 20 Oct 2024 11:53:40 -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 1t2YFP-0003MD-5G for qemu-devel@nongnu.org; Sun, 20 Oct 2024 11:53:39 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t2YFN-0005PW-Px for qemu-devel@nongnu.org; Sun, 20 Oct 2024 11:53:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1729439616; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=1bX8SwrawXi6wPzSE0JjFJp8yDQGRij0ZpmKsQ3vth0=; b=OYZEtoLX5jSG+Udyhk4XySwLc/3kp7E+kE0vmXAvw3928ibO/H7Jkhet0TiM0rFjX9htE8 Bxzp0TTuzw8kX62nk97IqXQbc6XMc6EKFtmVYmaJDWHXgCCNdtcBU0lX67wJw4RR3KUBjU cZrAkJCmRmsONDobQVRAzBicvu3cj6U= Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-554-JmPDxycHOESEbqi20MlOkw-1; Sun, 20 Oct 2024 11:53:35 -0400 X-MC-Unique: JmPDxycHOESEbqi20MlOkw-1 Received: by mail-wr1-f70.google.com with SMTP id ffacd0b85a97d-37d563a1af4so1640969f8f.2 for ; Sun, 20 Oct 2024 08:53:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729439612; x=1730044412; 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=1bX8SwrawXi6wPzSE0JjFJp8yDQGRij0ZpmKsQ3vth0=; b=ms9DbI/fjmucyDY0q0ZhvnpiaTyBb+Y3zf3t0kKCd3u3ToJV2npInZzbAA2QLm9nVt PUvXT1SLpfUsKddTUYIZs8arG+S0pwe0Z7OCk8hdr2jKkYQTaWDhVsE4dIW5zl8N1zam f2HsuEB2wquMzhoy2Gux1jxskVIB8Gq0KGG2TaWWigSSE722E5wAwoUz2vpveVFaDenz z81sUvRXXuPFvCUjGmG/BEwcilstj5GqDcFIeFoxdUi3VgogRJNS9binfil43XkF+m+n OT1HMpNoL0tZrPxyrR1Qtql2ieoNgWalAf+PkOKFgHYbSSIwakV78qaCx5VZhJU8uZ3f BUuw== X-Gm-Message-State: AOJu0YyvKJMP7F6TPnXjpcjXHy27cKMTX/MG/ya6GxEnZlETnlr0Ri/E Sk4h73ig2PLDfCADxBXEs3sEozYEgOsOJASfzse3Pw+rgS8ya7YHi/EptkTJrHJKDhI8FFZcB14 xw3uCUBSwGhBTWpbl6743+9qntI5POQ1bAWI7UgsdGmd0K3sGu6KlVuNgBVkeuvtaKEciOEjjUm bhI43jSQRXDYcx3yGWL5bNEJ/kDJI9IIGlhRShsuc= X-Received: by 2002:adf:fd44:0:b0:37d:42ce:f3a5 with SMTP id ffacd0b85a97d-37ea213c624mr5061627f8f.12.1729439612529; Sun, 20 Oct 2024 08:53:32 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGwqYrPsmtpjyII/k8kiWuM34rCyHJVYzNs4qBnQByePejJFMQGb9/059um7HV8XrTfXfghaQ== X-Received: by 2002:adf:fd44:0:b0:37d:42ce:f3a5 with SMTP id ffacd0b85a97d-37ea213c624mr5061611f8f.12.1729439612098; Sun, 20 Oct 2024 08:53:32 -0700 (PDT) Received: from avogadro.local ([151.95.144.54]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-37ee0a49180sm2007266f8f.39.2024.10.20.08.53.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 20 Oct 2024 08:53:30 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: richard.henderson@linaro.org Subject: [PATCH 02/14] target/i386: Tidy cc_op_str usage Date: Sun, 20 Oct 2024 17:53:12 +0200 Message-ID: <20241020155324.35273-3-pbonzini@redhat.com> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241020155324.35273-1-pbonzini@redhat.com> References: <20241020155324.35273-1-pbonzini@redhat.com> MIME-Version: 1.0 Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.527, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Richard Henderson Make const. Use the read-only strings directly; do not copy them into an on-stack buffer with snprintf. Allow for holes in the cc_op_str array, now present with CC_OP_POPCNT. Fixes: 460231ad369 ("target/i386: give CC_OP_POPCNT low bits corresponding to MO_TL") Signed-off-by: Richard Henderson Link: https://lore.kernel.org/r/20240701025115.1265117-2-richard.henderson@linaro.org Signed-off-by: Paolo Bonzini --- target/i386/cpu-dump.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/target/i386/cpu-dump.c b/target/i386/cpu-dump.c index 3bb8e440916..dc6723aedee 100644 --- a/target/i386/cpu-dump.c +++ b/target/i386/cpu-dump.c @@ -27,7 +27,7 @@ /***********************************************************/ /* x86 debug */ -static const char *cc_op_str[CC_OP_NB] = { +static const char * const cc_op_str[] = { [CC_OP_DYNAMIC] = "DYNAMIC", [CC_OP_EFLAGS] = "EFLAGS", @@ -347,7 +347,6 @@ void x86_cpu_dump_state(CPUState *cs, FILE *f, int flags) X86CPU *cpu = X86_CPU(cs); CPUX86State *env = &cpu->env; int eflags, i, nb; - char cc_op_name[32]; static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" }; eflags = cpu_compute_eflags(env); @@ -456,10 +455,16 @@ void x86_cpu_dump_state(CPUState *cs, FILE *f, int flags) env->dr[6], env->dr[7]); } if (flags & CPU_DUMP_CCOP) { - if ((unsigned)env->cc_op < CC_OP_NB) - snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); - else - snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); + const char *cc_op_name = NULL; + char cc_op_buf[32]; + + if ((unsigned)env->cc_op < ARRAY_SIZE(cc_op_str)) { + cc_op_name = cc_op_str[env->cc_op]; + } + if (cc_op_name == NULL) { + snprintf(cc_op_buf, sizeof(cc_op_buf), "[%d]", env->cc_op); + cc_op_name = cc_op_buf; + } #ifdef TARGET_X86_64 if (env->hflags & HF_CS64_MASK) { qemu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%s\n",