From nobody Tue Feb 10 07:23:49 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=1635791112; cv=none; d=zohomail.com; s=zohoarc; b=Jet4dEUDWXIa6JhGAA6XuMo/5t8xZJEyVLFignGBK6fc/+Q8pSJYkkyUqLyHOeM27rZ8R7wOf23tgKg/nRsLUpWYAi4cQkfmrUKS/zX9y3ilWDUJI11FJtIl2fEnD8PKSkc1ECo4JAv2zmHcs2CkS5qPFB7FVH+ZxgW+E7ajASs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1635791112; 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=54O7y5F6cil48JbVjJeuP4tBSWG4MHFPBxntrZflWpI=; b=BzF4rP9A8ym8yctJnuyYXdEHVI987f9HsED3FDaT2jo/+CtIPr1bDA7kHFXERSSKT4w9ffbaxIIfjLAozPZjK7DCWnJR59fSdzAmSIForl8NFKK1UN7RLWryiBTSfIz1I7DeDJNrT2xgX61AEKfeALfqx5W8Z4ZFDI2awpigsuo= 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) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1635791112055818.3227601001752; Mon, 1 Nov 2021 11:25:12 -0700 (PDT) Received: from localhost ([::1]:43734 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mhbzZ-0008WH-CK for importer@patchew.org; Mon, 01 Nov 2021 14:25:11 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60018) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mhb9C-0007zA-WB for qemu-devel@nongnu.org; Mon, 01 Nov 2021 13:31:03 -0400 Received: from mail-qt1-x832.google.com ([2607:f8b0:4864:20::832]:46014) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mhb9A-0001Ci-EJ for qemu-devel@nongnu.org; Mon, 01 Nov 2021 13:31:02 -0400 Received: by mail-qt1-x832.google.com with SMTP id r2so15244312qtw.12 for ; Mon, 01 Nov 2021 10:31:00 -0700 (PDT) Received: from localhost.localdomain (rrcs-172-254-253-57.nyc.biz.rr.com. [172.254.253.57]) by smtp.gmail.com with ESMTPSA id 13sm1222289qkc.40.2021.11.01.10.30.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Nov 2021 10:30:59 -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=54O7y5F6cil48JbVjJeuP4tBSWG4MHFPBxntrZflWpI=; b=QX8lpa/N6MGCc5XN0sEQ8Tozk/ZcRRE1sKnK/UAcaUYvlax/L3h/Z38wKdpO/t91p0 JX7jUZ3wkH9lryP+LW8tXF3h5KLQzfD5br9Xd5KgqoNoaX8KJQ0iGPAoCLIEW2J7B3p1 C1/VQ/2oQb8Aay/uYIBLE+9XZiSKzp1MGVyVqjvUtR9m0BBiuu9e/IHmIhnhjXw4xUPm hE7SbBJzIFVEbfDF28j74+OWMCti7+O+IygVexfgmTJCzMlHqzSuOjhycHmXyT+ShmhY 7Bw/Voe/YzD1e7+34DfunY6D2Qvm7BlY2d6avghbwMtZFhjssfHNhazu2lFlh4fz4a4o 9vHA== 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=54O7y5F6cil48JbVjJeuP4tBSWG4MHFPBxntrZflWpI=; b=Mk4eETm7mDd0biQPvxfpX0fmSP1Rl1Xq81dRlu6tDQ7hjZ/AIjPASEhmT3vaGYGANL w8/E7HGnVF8FJXGSNkyHT57Opn8VI0LeXq7W6npXpjBha8kRbFa8BmN5tr4PcSB3g22s 2jYHcvPbRNxRUOmOkOxqoZ4wBWQL6MsGqTOfQQRK3looO2QDQZlnpFMu8HN7PX8+ClnN HMZw7frEi0vJkHDsXGEWZJuAx9GlwdeAN4CY40nipSeLO/aZuG2++1DJX2Lsv5VaH/uI Ua3rCSjBKJNtcD7xabH7qmioVSc+X7PHTQX55BjR4FQS2DlrTHbfgSq0LB2tGicvgNUy 6Onw== X-Gm-Message-State: AOAM53252MkFKalyHjKt+3X80jp9rIBdaAB3M49DmJwlF5zkqNa4OTiU aG0rauiSIr+YJdX1FyFHEWmgiY8JoI5u6A== X-Google-Smtp-Source: ABdhPJx1U+T0jy21FCOp2nGRsnxUoeYX2O0X51TGdFkyla7n7V6sdWqqctt4njnho5MRKjxJSC4WvQ== X-Received: by 2002:ac8:58c6:: with SMTP id u6mr31956705qta.230.1635787859555; Mon, 01 Nov 2021 10:30:59 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v7 48/60] target/ppc: Move SPR_DSISR setting to powerpc_excp Date: Mon, 1 Nov 2021 13:27:17 -0400 Message-Id: <20211101172729.23149-49-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211101172729.23149-1-richard.henderson@linaro.org> References: <20211101172729.23149-1-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::832; envelope-from=richard.henderson@linaro.org; helo=mail-qt1-x832.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: , Cc: Peter Maydell Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1635791113082100001 Content-Type: text/plain; charset="utf-8" By doing this while sending the exception, we will have already done the unwinding, which makes the ppc_cpu_do_unaligned_access code a bit cleaner. Update the comment about the expected instruction format. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/ppc/excp_helper.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c index b7d1767920..88a8de4b80 100644 --- a/target/ppc/excp_helper.c +++ b/target/ppc/excp_helper.c @@ -454,13 +454,15 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int = excp_model, int excp) break; } case POWERPC_EXCP_ALIGN: /* Alignment exception = */ - /* Get rS/rD and rA from faulting opcode */ /* - * Note: the opcode fields will not be set properly for a - * direct store load/store, but nobody cares as nobody - * actually uses direct store segments. + * Get rS/rD and rA from faulting opcode. + * Note: We will only invoke ALIGN for atomic operations, + * so all instructions are X-form. */ - env->spr[SPR_DSISR] |=3D (env->error_code & 0x03FF0000) >> 16; + { + uint32_t insn =3D cpu_ldl_code(env, env->nip); + env->spr[SPR_DSISR] |=3D (insn & 0x03FF0000) >> 16; + } break; case POWERPC_EXCP_PROGRAM: /* Program exception = */ switch (env->error_code & ~0xF) { @@ -1462,14 +1464,9 @@ void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr= vaddr, int mmu_idx, uintptr_t retaddr) { CPUPPCState *env =3D cs->env_ptr; - uint32_t insn; - - /* Restore state and reload the insn we executed, for filling in DSISR= . */ - cpu_restore_state(cs, retaddr, true); - insn =3D cpu_ldl_code(env, env->nip); =20 cs->exception_index =3D POWERPC_EXCP_ALIGN; - env->error_code =3D insn & 0x03FF0000; - cpu_loop_exit(cs); + env->error_code =3D 0; + cpu_loop_exit_restore(cs, retaddr); } #endif --=20 2.25.1