From patchwork Fri Nov 3 06:23:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: gaosong X-Patchwork-Id: 13444341 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 5A167C4167D for ; Fri, 3 Nov 2023 06:24:39 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qynb0-00069o-RX; Fri, 03 Nov 2023 02:23:54 -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 1qynau-00068L-Eb for qemu-devel@nongnu.org; Fri, 03 Nov 2023 02:23:48 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qynar-0004Bl-2o for qemu-devel@nongnu.org; Fri, 03 Nov 2023 02:23:48 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxJujpkURl0ag2AA--.48484S3; Fri, 03 Nov 2023 14:23:37 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxH93hkURlQfg4AA--.60029S7; Fri, 03 Nov 2023 14:23:36 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: stefanha@gmail.com, Richard Henderson Subject: [PULL 05/10] linux-user/loongarch64: Use traps to track LSX/LASX usage Date: Fri, 3 Nov 2023 14:23:27 +0800 Message-Id: <20231103062332.2413724-6-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20231103062332.2413724-1-gaosong@loongson.cn> References: <20231103062332.2413724-1-gaosong@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8AxH93hkURlQfg4AA--.60029S7 X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 Signed-off-by: Richard Henderson Message-Id: <20231101030816.2353416-2-gaosong@loongson.cn> Signed-off-by: Song Gao --- linux-user/loongarch64/cpu_loop.c | 13 +++++++++++++ target/loongarch/insn_trans/trans_vec.c.inc | 11 ----------- 2 files changed, 13 insertions(+), 11 deletions(-) diff --git a/linux-user/loongarch64/cpu_loop.c b/linux-user/loongarch64/cpu_loop.c index 894fdd111a..73d7b6796a 100644 --- a/linux-user/loongarch64/cpu_loop.c +++ b/linux-user/loongarch64/cpu_loop.c @@ -72,6 +72,19 @@ void cpu_loop(CPULoongArchState *env) case EXCCODE_BCE: force_sig_fault(TARGET_SIGSYS, TARGET_SI_KERNEL, env->pc); break; + + /* + * Begin with LSX and LASX disabled, then enable on the first trap. + * In this way we can tell if the unit is in use. This is used to + * choose the layout of any signal frame. + */ + case EXCCODE_SXD: + env->CSR_EUEN |= R_CSR_EUEN_SXE_MASK; + break; + case EXCCODE_ASXD: + env->CSR_EUEN |= R_CSR_EUEN_ASXE_MASK; + break; + case EXCP_ATOMIC: cpu_exec_step_atomic(cs); break; diff --git a/target/loongarch/insn_trans/trans_vec.c.inc b/target/loongarch/insn_trans/trans_vec.c.inc index 98f856bb29..92b1d22e28 100644 --- a/target/loongarch/insn_trans/trans_vec.c.inc +++ b/target/loongarch/insn_trans/trans_vec.c.inc @@ -4,8 +4,6 @@ * Copyright (c) 2022-2023 Loongson Technology Corporation Limited */ -#ifndef CONFIG_USER_ONLY - static bool check_vec(DisasContext *ctx, uint32_t oprsz) { if ((oprsz == 16) && ((ctx->base.tb->flags & HW_FLAGS_EUEN_SXE) == 0)) { @@ -21,15 +19,6 @@ static bool check_vec(DisasContext *ctx, uint32_t oprsz) return true; } -#else - -static bool check_vec(DisasContext *ctx, uint32_t oprsz) -{ - return true; -} - -#endif - static bool gen_vvvv_ptr_vl(DisasContext *ctx, arg_vvvv *a, uint32_t oprsz, gen_helper_gvec_4_ptr *fn) {