From patchwork Fri Feb 24 04:08:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiwei Li X-Patchwork-Id: 13150919 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 53463C61DA4 for ; Fri, 24 Feb 2023 04:10:55 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pVPOh-00062S-6L; Thu, 23 Feb 2023 23:09:27 -0500 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 1pVPOZ-0005ye-6r; Thu, 23 Feb 2023 23:09:19 -0500 Received: from smtp80.cstnet.cn ([159.226.251.80] helo=cstnet.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pVPOU-00031T-7n; Thu, 23 Feb 2023 23:09:18 -0500 Received: from localhost.localdomain (unknown [114.95.238.225]) by APP-01 (Coremail) with SMTP id qwCowAC3u0deOPhjTRffBw--.16142S4; Fri, 24 Feb 2023 12:09:05 +0800 (CST) From: Weiwei Li To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, alistair.francis@wdc.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, wangjunqiang@iscas.ac.cn, lazyparser@gmail.com, Weiwei Li Subject: [PATCH 2/6] target/riscv: Fix the relationship of PBMTE/STCE fields between menvcfg and henvcfg Date: Fri, 24 Feb 2023 12:08:48 +0800 Message-Id: <20230224040852.37109-3-liweiwei@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230224040852.37109-1-liweiwei@iscas.ac.cn> References: <20230224040852.37109-1-liweiwei@iscas.ac.cn> MIME-Version: 1.0 X-CM-TRANSID: qwCowAC3u0deOPhjTRffBw--.16142S4 X-Coremail-Antispam: 1UD129KBjvJXoW7CryUGFWfZF43Zw4kCryUJrb_yoW8WF1UpF yrWrZxJ3s5Kryvva97AFs8WF1rA3WkCws8Zw47uanYvF15Ar1rAF9rtas8A34rW3ykCr4j v3y7Ar13CF4DZ3JanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPj14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jryl82xGYIkIc2 x26xkF7I0E14v26r4j6ryUM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1l84 ACjcxK6I8E87Iv67AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVCY1x0267AKxVWxJr0_GcWl e2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI 8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8JwAC jcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2Y2ka0x kIwI1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AK xVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrx kI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v2 6r4j6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8Jw CI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfU8BMNUUUU U X-Originating-IP: [114.95.238.225] X-CM-SenderInfo: 5olzvxxzhlqxpvfd2hldfou0/ Received-SPF: pass client-ip=159.226.251.80; envelope-from=liweiwei@iscas.ac.cn; helo=cstnet.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, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-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 henvcfg.PBMTE/STCE are read-only zero if menvcfg.PBMTE/STCE are zero. Signed-off-by: Weiwei Li Signed-off-by: Junqiang Wang Reviewed-by: Daniel Henrique Barboza --- target/riscv/csr.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index feae23cab0..02cb2c2bb7 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -1956,7 +1956,11 @@ static RISCVException read_henvcfg(CPURISCVState *env, int csrno, return ret; } - *val = env->henvcfg; + /* + * henvcfg.pbmte is read_only 0 when menvcfg.pbmte = 0 + * henvcfg.stce is read_only 0 when menvcfg.stce = 0 + */ + *val = env->henvcfg & (~(HENVCFG_PBMTE | HENVCFG_STCE) | env->menvcfg); return RISCV_EXCP_NONE; } @@ -1972,7 +1976,7 @@ static RISCVException write_henvcfg(CPURISCVState *env, int csrno, } if (riscv_cpu_mxl(env) == MXL_RV64) { - mask |= HENVCFG_PBMTE | HENVCFG_STCE; + mask |= env->menvcfg & (HENVCFG_PBMTE | HENVCFG_STCE); } env->henvcfg = (env->henvcfg & ~mask) | (val & mask); @@ -1990,14 +1994,15 @@ static RISCVException read_henvcfgh(CPURISCVState *env, int csrno, return ret; } - *val = env->henvcfg >> 32; + *val = (env->henvcfg & (~(HENVCFG_PBMTE | HENVCFG_STCE) | + env->menvcfg)) >> 32; return RISCV_EXCP_NONE; } static RISCVException write_henvcfgh(CPURISCVState *env, int csrno, target_ulong val) { - uint64_t mask = HENVCFG_PBMTE | HENVCFG_STCE; + uint64_t mask = env->menvcfg & (HENVCFG_PBMTE | HENVCFG_STCE); uint64_t valh = (uint64_t)val << 32; RISCVException ret;