From patchwork Mon Jan 13 08:25:53 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bibo Mao X-Patchwork-Id: 13936851 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 1E9AAE7719E for ; Mon, 13 Jan 2025 08:26:34 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tXFm8-0002UR-3T; Mon, 13 Jan 2025 03:26:20 -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 1tXFlx-0002Nk-0b for qemu-devel@nongnu.org; Mon, 13 Jan 2025 03:26:09 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tXFlu-0002So-E9 for qemu-devel@nongnu.org; Mon, 13 Jan 2025 03:26:08 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8AxEK8XzoRnYmtiAA--.1640S3; Mon, 13 Jan 2025 16:25:59 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMCx78cVzoRngBAgAA--.63355S3; Mon, 13 Jan 2025 16:25:58 +0800 (CST) From: Bibo Mao To: Song Gao Cc: qemu-devel@nongnu.org Subject: [PATCH 1/5] target/loongarch: Add dynamic function access with CSR register Date: Mon, 13 Jan 2025 16:25:53 +0800 Message-Id: <20250113082557.2926009-2-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20250113082557.2926009-1-maobibo@loongson.cn> References: <20250113082557.2926009-1-maobibo@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: qMiowMCx78cVzoRngBAgAA--.63355S3 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org With CSR register, dynamic function access is used for CSR register access in TCG mode, so that csr info can be used by other modules. Signed-off-by: Bibo Mao --- .../tcg/insn_trans/trans_privileged.c.inc | 37 +++++++++++++++++-- target/loongarch/tcg/tcg_loongarch.h | 12 ++++++ target/loongarch/tcg/translate.c | 3 ++ 3 files changed, 49 insertions(+), 3 deletions(-) create mode 100644 target/loongarch/tcg/tcg_loongarch.h diff --git a/target/loongarch/tcg/insn_trans/trans_privileged.c.inc b/target/loongarch/tcg/insn_trans/trans_privileged.c.inc index 30f9b83fb2..a864a45550 100644 --- a/target/loongarch/tcg/insn_trans/trans_privileged.c.inc +++ b/target/loongarch/tcg/insn_trans/trans_privileged.c.inc @@ -76,7 +76,7 @@ enum { #define CSR_OFF(NAME) \ CSR_OFF_FLAGS(NAME, 0) -static const CSRInfo csr_info[] = { +static CSRInfo csr_info[] = { CSR_OFF_FLAGS(CRMD, CSRFL_EXITTB), CSR_OFF(PRMD), CSR_OFF_FLAGS(EUEN, CSRFL_EXITTB), @@ -160,9 +160,9 @@ static bool check_plv(DisasContext *ctx) return false; } -static const CSRInfo *get_csr(unsigned csr_num) +static CSRInfo *get_csr(unsigned csr_num) { - const CSRInfo *csr; + CSRInfo *csr; if (csr_num >= ARRAY_SIZE(csr_info)) { return NULL; @@ -174,6 +174,37 @@ static const CSRInfo *get_csr(unsigned csr_num) return csr; } +static bool set_csr_trans_func(unsigned int csr_num, GenCSRRead readfn, + GenCSRWrite writefn) +{ + CSRInfo *csr; + + csr = get_csr(csr_num); + if (!csr) { + return false; + } + + csr->readfn = readfn; + csr->writefn = writefn; + return true; +} + +#define SET_CSR_FUNC(NAME, read, write) \ + set_csr_trans_func(LOONGARCH_CSR_##NAME, read, write) + +void csr_translate_init(void) +{ + SET_CSR_FUNC(ESTAT, NULL, gen_helper_csrwr_estat); + SET_CSR_FUNC(ASID, NULL, gen_helper_csrwr_asid); + SET_CSR_FUNC(PGD, gen_helper_csrrd_pgd, NULL); + SET_CSR_FUNC(PWCL, NULL, gen_helper_csrwr_pwcl); + SET_CSR_FUNC(CPUID, gen_helper_csrrd_cpuid, NULL); + SET_CSR_FUNC(TCFG, NULL, gen_helper_csrwr_tcfg); + SET_CSR_FUNC(TVAL, gen_helper_csrrd_tval, NULL); + SET_CSR_FUNC(TICLR, NULL, gen_helper_csrwr_ticlr); +} +#undef SET_CSR_FUNC + static bool check_csr_flags(DisasContext *ctx, const CSRInfo *csr, bool write) { if ((csr->flags & CSRFL_READONLY) && write) { diff --git a/target/loongarch/tcg/tcg_loongarch.h b/target/loongarch/tcg/tcg_loongarch.h new file mode 100644 index 0000000000..c2bccc075d --- /dev/null +++ b/target/loongarch/tcg/tcg_loongarch.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * QEMU LoongArch TCG interface + * + * Copyright (c) 2025 Loongson Technology Corporation Limited + */ +#ifndef TARGET_LOONGARCH_TCG_LOONGARCH_H +#define TARGET_LOONGARCH_TCG_LOONGARCH_H + +void csr_translate_init(void); + +#endif /* TARGET_LOONGARCH_TCG_LOONGARCH_H */ diff --git a/target/loongarch/tcg/translate.c b/target/loongarch/tcg/translate.c index 68be999410..b3cd499a97 100644 --- a/target/loongarch/tcg/translate.c +++ b/target/loongarch/tcg/translate.c @@ -16,6 +16,7 @@ #include "exec/log.h" #include "qemu/qemu-print.h" #include "fpu/softfloat.h" +#include "tcg_loongarch.h" #include "translate.h" #include "internals.h" #include "vec.h" @@ -358,4 +359,6 @@ void loongarch_translate_init(void) offsetof(CPULoongArchState, lladdr), "lladdr"); cpu_llval = tcg_global_mem_new(tcg_env, offsetof(CPULoongArchState, llval), "llval"); + + csr_translate_init(); }