From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 617B3C433EF for ; Thu, 11 Nov 2021 06:01:38 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 020596112D for ; Thu, 11 Nov 2021 06:01:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 020596112D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-sky.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:40362 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ml39U-0003Oy-Vi for qemu-devel@archiver.kernel.org; Thu, 11 Nov 2021 01:01:37 -0500 Received: from eggs.gnu.org ([209.51.188.92]:47892) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ml379-00014Q-TN; Thu, 11 Nov 2021 00:59:13 -0500 Received: from out28-171.mail.aliyun.com ([115.124.28.171]:46249) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ml377-0003BX-CF; Thu, 11 Nov 2021 00:59:11 -0500 X-Alimail-AntiSpam: AC=CONTINUE; BC=0.1101835|-1; CH=green; DM=|CONTINUE|false|; DS=CONTINUE|ham_alarm|0.0320985-0.000647087-0.967254; FP=4212412425320115155|2|2|6|0|-1|-1|-1; HT=ay29a033018047194; MF=zhiwei_liu@c-sky.com; NM=1; PH=DS; RN=7; RT=7; SR=0; TI=SMTPD_---.Lr0jnTY_1636610343; Received: from roman-VirtualBox.hz.ali.com(mailfrom:zhiwei_liu@c-sky.com fp:SMTPD_---.Lr0jnTY_1636610343) by smtp.aliyun-inc.com(10.147.42.241); Thu, 11 Nov 2021 13:59:04 +0800 From: LIU Zhiwei To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH v3 02/20] target/riscv: Sign extend pc for different XLEN Date: Thu, 11 Nov 2021 13:57:42 +0800 Message-Id: <20211111055800.42672-3-zhiwei_liu@c-sky.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211111055800.42672-1-zhiwei_liu@c-sky.com> References: <20211111055800.42672-1-zhiwei_liu@c-sky.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: none client-ip=115.124.28.171; envelope-from=zhiwei_liu@c-sky.com; helo=out28-171.mail.aliyun.com 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, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, UNPARSEABLE_RELAY=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: palmer@dabbelt.com, richard.henderson@linaro.org, bin.meng@windriver.com, Alistair.Francis@wdc.com, LIU Zhiwei Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When pc is written, it is sign-extended to fill the widest supported XLEN. Signed-off-by: LIU Zhiwei Reviewed-by: Richard Henderson --- target/riscv/translate.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 1d57bc97b5..a6a73ced9e 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -150,16 +150,24 @@ static void gen_check_nanbox_s(TCGv_i64 out, TCGv_i64 in) tcg_gen_movcond_i64(TCG_COND_GEU, out, in, t_max, in, t_nan); } +static void gen_set_pc(DisasContext *ctx, target_ulong dest) +{ + if (get_xl(ctx) == MXL_RV32) { + dest = (int32_t)dest; + } + tcg_gen_movi_tl(cpu_pc, dest); +} + static void generate_exception(DisasContext *ctx, int excp) { - tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next); + gen_set_pc(ctx, ctx->base.pc_next); gen_helper_raise_exception(cpu_env, tcg_constant_i32(excp)); ctx->base.is_jmp = DISAS_NORETURN; } static void generate_exception_mtval(DisasContext *ctx, int excp) { - tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next); + gen_set_pc(ctx, ctx->base.pc_next); tcg_gen_st_tl(cpu_pc, cpu_env, offsetof(CPURISCVState, badaddr)); gen_helper_raise_exception(cpu_env, tcg_constant_i32(excp)); ctx->base.is_jmp = DISAS_NORETURN; @@ -179,10 +187,10 @@ static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest) { if (translator_use_goto_tb(&ctx->base, dest)) { tcg_gen_goto_tb(n); - tcg_gen_movi_tl(cpu_pc, dest); + gen_set_pc(ctx, dest); tcg_gen_exit_tb(ctx->base.tb, n); } else { - tcg_gen_movi_tl(cpu_pc, dest); + gen_set_pc(ctx, dest); tcg_gen_lookup_and_goto_ptr(); } } -- 2.25.1