From nobody Tue Feb 10 21:41:21 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1615835644; cv=none; d=zohomail.com; s=zohoarc; b=e5+TpQoub9kOUsLxejqaI6UKnLspPMJtIHhsBUNW3OTLlCZfFSqcLxG0YWwelPPOT2IX2C2ucoCQWXkQd2bFphv7k9WtXnqwW3MkYEsLscLWAvitJbQ9ZGZi67v6PZ6zDzhEAoBcDCVVOARNPgSC8fUnU0N+XuJeAZWDffeQvhk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1615835644; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=nDEzeJHZqdUXe/dXYq7qR5PEy35VBqTIPDXHrdEdgcc=; b=UgMP1qunkvwTtggNETA8qX4TO2Ood1v/zOxDIjADKVdztNVhu9UT2VLfHdpn1jLimCR0ch8uBvIWsxUuDMww0xL8+esH7cZg0BXcSUeq5f57unuULgaHn7o5BGWMeXlRWrjiMc64T78FKdo34QDlHouHYbUhLDYKb7ILGXn0JHw= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 16158356443891015.4122709339478; Mon, 15 Mar 2021 12:14:04 -0700 (PDT) Received: from localhost ([::1]:59896 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lLsfD-0001Xe-82 for importer@patchew.org; Mon, 15 Mar 2021 15:14:03 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49074) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lLsEa-0007ME-SG for qemu-devel@nongnu.org; Mon, 15 Mar 2021 14:46:32 -0400 Received: from mail-oi1-x231.google.com ([2607:f8b0:4864:20::231]:34969) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lLsEY-0001db-Up for qemu-devel@nongnu.org; Mon, 15 Mar 2021 14:46:32 -0400 Received: by mail-oi1-x231.google.com with SMTP id u6so28160962oic.2 for ; Mon, 15 Mar 2021 11:46:30 -0700 (PDT) Received: from localhost.localdomain (fixed-187-189-51-144.totalplay.net. [187.189.51.144]) by smtp.gmail.com with ESMTPSA id o25sm7519851otk.11.2021.03.15.11.46.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Mar 2021 11:46:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=nDEzeJHZqdUXe/dXYq7qR5PEy35VBqTIPDXHrdEdgcc=; b=GxwT/s1Kw/Tjbat9Z22XUIdh+t+qliRN/8rOyxf0oyhIZJEVfMdgsD2flK/KcG/SCd T8/FaF155Be2KToSbN1ykM+vMCUbu2rbooULaPH0jepneeEdITyuUlCkQvKgk5JOTjeX ofJvHQ2nRs6ymkXMKQWI//+I03biSYAc9lfFK2imTSSUOIx2yfFyA9wVDz0oR9LfCaBp 6OBLzGL4Z/U9ft9X5KucuGGD3ZlnJ3PdgSIcg68QH7zCVvOfeqik7X58+8HiS3llLb8K /w/suZx2z1w9G6wWK5tG4hj/ghJnQZMxRMVSXMIgjeogB2LPrDvl/htcYC2CYUnwS5vZ HurQ== 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=nDEzeJHZqdUXe/dXYq7qR5PEy35VBqTIPDXHrdEdgcc=; b=hOC29Pyo2cyTHbVgNMu05/ngNBejDaFk78enooxR2oG8k7BnstU94LBrYCs66a6UYY 7pGTr7bEaR7+1D1L1FSGNx3TmGuQ4XVEDdk8QJcytnlTo6qd6LlELivY2pMgYSImo7go WwTnPd5Z+lAtoHm0a0BmDWE50FFL/c7mSw5jB94J++cFQXUnYDXxcC1Fo4gW8X3AyD0s E3CC1ECAYWa5bl0C59XXsUDm7gpT5ZZLajjHYzXjDnW0Euf4C010gU7oJ0DtDtfwi/yd UenKPztLhJGn+MLaLa/fgct7m1pt876c1d8R8xO38Xoz3KBMzJs3Dn8djcwA14+EalEF M2VQ== X-Gm-Message-State: AOAM531f2UJScMbJXzAV7KHYRT+hcpXRLIv/OS8GJOV/MUHi2HUj4QrW sxZwEGhu90YwtbtDXKtZjAV8iucvcSndqO2J X-Google-Smtp-Source: ABdhPJzA4alE9qCP15NyJ2ElJO+BMZg0ujENs9xYWZjU1hOB2H9D/fmKVq4CNaBv0/zy7TKAXnBfAw== X-Received: by 2002:aca:90a:: with SMTP id 10mr361845oij.35.1615833989826; Mon, 15 Mar 2021 11:46:29 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v4 10/17] target/ppc: Create helper_scv Date: Mon, 15 Mar 2021 12:46:08 -0600 Message-Id: <20210315184615.1985590-11-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210315184615.1985590-1-richard.henderson@linaro.org> References: <20210315184615.1985590-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::231; envelope-from=richard.henderson@linaro.org; helo=mail-oi1-x231.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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Perform the test against FSCR_SCV at runtime, in the helper. This means we can remove the incorrect set against SCV in ppc_tr_init_disas_context and do not need to add an HFLAGS bit. Signed-off-by: Richard Henderson --- target/ppc/helper.h | 1 + target/ppc/excp_helper.c | 9 +++++++++ target/ppc/translate.c | 20 +++++++------------- 3 files changed, 17 insertions(+), 13 deletions(-) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index 6a4dccf70c..513066d54d 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -13,6 +13,7 @@ DEF_HELPER_1(rfci, void, env) DEF_HELPER_1(rfdi, void, env) DEF_HELPER_1(rfmci, void, env) #if defined(TARGET_PPC64) +DEF_HELPER_2(scv, noreturn, env, i32) DEF_HELPER_2(pminsn, void, env, i32) DEF_HELPER_1(rfid, void, env) DEF_HELPER_1(rfscv, void, env) diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c index 85de7e6c90..5c95e0c103 100644 --- a/target/ppc/excp_helper.c +++ b/target/ppc/excp_helper.c @@ -1130,6 +1130,15 @@ void helper_store_msr(CPUPPCState *env, target_ulong= val) } =20 #if defined(TARGET_PPC64) +void helper_scv(CPUPPCState *env, uint32_t lev) +{ + if (env->spr[SPR_FSCR] & (1ull << FSCR_SCV)) { + raise_exception_err(env, POWERPC_EXCP_SYSCALL_VECTORED, lev); + } else { + raise_exception_err(env, POWERPC_EXCP_FU, FSCR_IC_SCV); + } +} + void helper_pminsn(CPUPPCState *env, powerpc_pm_insn_t insn) { CPUState *cs; diff --git a/target/ppc/translate.c b/target/ppc/translate.c index 7912495f28..d48c554290 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -173,7 +173,6 @@ struct DisasContext { bool vsx_enabled; bool spe_enabled; bool tm_enabled; - bool scv_enabled; bool gtse; ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */ int singlestep_enabled; @@ -4081,15 +4080,16 @@ static void gen_sc(DisasContext *ctx) #if !defined(CONFIG_USER_ONLY) static void gen_scv(DisasContext *ctx) { - uint32_t lev; + uint32_t lev =3D (ctx->opcode >> 5) & 0x7F; =20 - if (unlikely(!ctx->scv_enabled)) { - gen_exception_err(ctx, POWERPC_EXCP_FU, FSCR_IC_SCV); - return; + /* Set the PC back to the faulting instruction. */ + if (ctx->exception =3D=3D POWERPC_EXCP_NONE) { + gen_update_nip(ctx, ctx->base.pc_next - 4); } + gen_helper_scv(cpu_env, tcg_constant_i32(lev)); =20 - lev =3D (ctx->opcode >> 5) & 0x7F; - gen_exception_err(ctx, POWERPC_SYSCALL_VECTORED, lev); + /* This need not be exact, just not POWERPC_EXCP_NONE */ + ctx->exception =3D POWERPC_SYSCALL_VECTORED; } #endif #endif @@ -7907,12 +7907,6 @@ static void ppc_tr_init_disas_context(DisasContextBa= se *dcbase, CPUState *cs) ctx->spe_enabled =3D (hflags >> HFLAGS_SPE) & 1; ctx->altivec_enabled =3D (hflags >> HFLAGS_VR) & 1; ctx->vsx_enabled =3D (hflags >> HFLAGS_VSX) & 1; - if ((env->flags & POWERPC_FLAG_SCV) - && (env->spr[SPR_FSCR] & (1ull << FSCR_SCV))) { - ctx->scv_enabled =3D true; - } else { - ctx->scv_enabled =3D false; - } ctx->tm_enabled =3D (hflags >> HFLAGS_TM) & 1; ctx->gtse =3D !!(env->spr[SPR_LPCR] & LPCR_GTSE); =20 --=20 2.25.1