From patchwork Mon Jan 6 10:23:45 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Baturo X-Patchwork-Id: 13927178 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 6EBB7E77188 for ; Mon, 6 Jan 2025 10:26:10 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tUkHd-00077S-D6; Mon, 06 Jan 2025 05:24:29 -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 1tUkHa-00076c-Uv; Mon, 06 Jan 2025 05:24:27 -0500 Received: from mail-lj1-x233.google.com ([2a00:1450:4864:20::233]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tUkHY-0008RE-T2; Mon, 06 Jan 2025 05:24:26 -0500 Received: by mail-lj1-x233.google.com with SMTP id 38308e7fff4ca-3002c324e7eso163970501fa.3; Mon, 06 Jan 2025 02:24:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1736159063; x=1736763863; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=EoGuafrivYOXJ9X+Hyr0yxdy3q2O4Bs5F7fKJPmOWhQ=; b=B4kzoi4wfDRWn/zf19klMMS4RFT+o/zlMJC3HtnZccrEt9jwIU+6i5ihMaUAQ5070I d37LMNJx/0kW2Ni+wKH7JNp+3SJZInR9yToeFlmJJJhH+W4PCWLxR43DtfYO2QA4xthl h7lrHicgEa/gUW6qGkTM/zHT6omAFiIFefdp0ORG2QJBV5PCxcFLzadYOz/d2HaNItr8 ZQSlC70phrlE4ff5sdtEkWh7jO8lexhlUCtk+tHokWRox+o8AnIvJpx9IOSs2iwc1J37 7p/uffp9UuwptE4QlQxykTNTXKZdkh1dGbjsRNhZqDDNEVtog68MwcAHHuiziY812zSP Q0IA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736159063; x=1736763863; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=EoGuafrivYOXJ9X+Hyr0yxdy3q2O4Bs5F7fKJPmOWhQ=; b=tzUwIR+8Kr6od4Y0zJj30X3+AeepSB/08qgBrdwwSrY3OZuFZWX10wh0+JsmpC7cW/ eYL2vK/wmKzsjrfHMYqaHP02YmyKrrjIgimAZtKOgSZfQCw+EUQhQ1WamNBYcNmspbmj Dq429qRSdWpgSmhh5vyBznwd57C8c8++j+ZoSHppE2vnQcXbiSye2PPcqONnPToLSP4U /3gx+j26jvXqwtwrEpkIDJcleNQNpFdpJ6x0Zu/JhlgIjlpjoDFXqzsQF1aavrwqVfd+ crohJEsuDSO18oEkbIVFz/41KQLRPxWdXwPc6zy49A7TOcj8s8u4Q1AkU466zhcopGwW ABaQ== X-Forwarded-Encrypted: i=1; AJvYcCW1K/0CpJeGZ6zOsIj+A6FdbxEbLtxazQHOCJ/7W3Yd3vhMH/xbecPsLzp4wSW+OuotUW3HqCgANCJn@nongnu.org, AJvYcCX07zVoVXL5lRR7HqraH9JdTy76DNZ9T4I3M03Uhciv8YYiKNt74xrOaNqdMPithodJNQmpAQMGeMR0vA==@nongnu.org X-Gm-Message-State: AOJu0YzgnK0rDINYk792I3ya1mC1xV4I7tVHTa8DfFuGrmXgouY5Z8XU lGqOP8PdWR1z7DkjjrmUKr/pYs3xzu/ct47tuTejzWVfH1CwXdkAbtN/Svtz X-Gm-Gg: ASbGnct9Udi1lazEfcDZgxT9LFnYczcBYG31trvpa7IgkiZvfnzs9BQ412o2tpV0P4X 9aadGpwd577VJAN14CBfwBs7AXqBH5x3+CPFKr2V5/9X6zTbsN1wMkV7RLSWgZkD+JeRrIP3SIo yLQ+StGGPIUJgDquSuQKeEXiJbKpSTHcEZjqa37KVAT/FebXRmIVToiLf+4RS3ZWWnXvAozRzvG drQ8irZBxMLGuWU1cFKq0QnTGE/9uXJQvKnM8GFz/oemWJMu+UCSzvMgsaD X-Google-Smtp-Source: AGHT+IF4+xKm5o5jUaBYgq0EcH5QTm3PObLnKxj8nOc2kkEiiodVylHJiThAdWGtwlxqD8YBY9rrJQ== X-Received: by 2002:a05:6512:12d1:b0:540:263a:131f with SMTP id 2adb3069b0e04-5422957ae4bmr16226481e87.50.1736159062671; Mon, 06 Jan 2025 02:24:22 -0800 (PST) Received: from vmdev.asgard ([81.200.11.243]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-542235fed58sm4811190e87.65.2025.01.06.02.24.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jan 2025 02:24:21 -0800 (PST) From: baturo.alexey@gmail.com To: Cc: baturo.alexey@gmail.com, richard.henderson@linaro.org, palmer@dabbelt.com, Alistair.Francis@wdc.com, sagark@eecs.berkeley.edu, kbastian@mail.uni-paderborn.de, qemu-devel@nongnu.org, qemu-riscv@nongnu.org, zhiwei_liu@linux.alibaba.com, dbarboza@ventanamicro.com, liwei1518@gmail.com, frank.chang@sifive.com, Alistair Francis Subject: [PATCH v15 6/7] target/riscv: Apply pointer masking for virtualized memory accesses Date: Mon, 6 Jan 2025 13:23:45 +0300 Message-Id: <20250106102346.1100149-7-baturo.alexey@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250106102346.1100149-1-baturo.alexey@gmail.com> References: <20250106102346.1100149-1-baturo.alexey@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::233; envelope-from=baturo.alexey@gmail.com; helo=mail-lj1-x233.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, FREEMAIL_FROM=0.001, 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Alexey Baturo Signed-off-by: Alexey Baturo Reviewed-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis --- target/riscv/cpu.h | 1 + target/riscv/cpu_helper.c | 19 +++++++++++++ target/riscv/internals.h | 54 ++++++++++++++++++++++++++++++++++++ target/riscv/op_helper.c | 16 +++++------ target/riscv/vector_helper.c | 21 -------------- 5 files changed, 82 insertions(+), 29 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index b7458c40d8..504bab31b1 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -776,6 +776,7 @@ bool riscv_cpu_is_32bit(RISCVCPU *cpu); bool riscv_cpu_virt_mem_enabled(CPURISCVState *env); RISCVPmPmm riscv_pm_get_pmm(CPURISCVState *env); +RISCVPmPmm riscv_pm_get_virt_pmm(CPURISCVState *env); uint32_t riscv_pm_get_pmlen(RISCVPmPmm pmm); RISCVException riscv_csrr(CPURISCVState *env, int csrno, diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 8728541b99..2e307e4ea5 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -263,6 +263,25 @@ RISCVPmPmm riscv_pm_get_pmm(CPURISCVState *env) #endif } +RISCVPmPmm riscv_pm_get_virt_pmm(CPURISCVState *env) +{ +#ifndef CONFIG_USER_ONLY + int priv_mode = cpu_address_mode(env); + + if (priv_mode == PRV_U) { + return get_field(env->hstatus, HSTATUS_HUPMM); + } else { + if (get_field(env->hstatus, HSTATUS_SPVP)) { + return get_field(env->henvcfg, HENVCFG_PMM); + } else { + return get_field(env->senvcfg, SENVCFG_PMM); + } + } +#else + return PMM_FIELD_DISABLED; +#endif +} + bool riscv_cpu_virt_mem_enabled(CPURISCVState *env) { #ifndef CONFIG_USER_ONLY diff --git a/target/riscv/internals.h b/target/riscv/internals.h index 76934eaa7b..67291933f8 100644 --- a/target/riscv/internals.h +++ b/target/riscv/internals.h @@ -145,4 +145,58 @@ static inline float16 check_nanbox_h(CPURISCVState *env, uint64_t f) /* Our implementation of CPUClass::has_work */ bool riscv_cpu_has_work(CPUState *cs); +/* Zjpm addr masking routine */ +static inline target_ulong adjust_addr_body(CPURISCVState *env, + target_ulong addr, + bool is_virt_addr) +{ + RISCVPmPmm pmm = PMM_FIELD_DISABLED; + uint32_t pmlen = 0; + bool signext = false; + + /* do nothing for rv32 mode */ + if (riscv_cpu_mxl(env) == MXL_RV32) { + return addr; + } + + /* get pmm field depending on whether addr is */ + if (is_virt_addr) { + pmm = riscv_pm_get_virt_pmm(env); + } else { + pmm = riscv_pm_get_pmm(env); + } + + /* if pointer masking is disabled, return original addr */ + if (pmm == PMM_FIELD_DISABLED) { + return addr; + } + + if (!is_virt_addr) { + signext = riscv_cpu_virt_mem_enabled(env); + } + addr = addr << pmlen; + pmlen = riscv_pm_get_pmlen(pmm); + + /* sign/zero extend masked address by N-1 bit */ + if (signext) { + addr = (target_long)addr >> pmlen; + } else { + addr = addr >> pmlen; + } + + return addr; +} + +static inline target_ulong adjust_addr(CPURISCVState *env, + target_ulong addr) +{ + return adjust_addr_body(env, addr, false); +} + +static inline target_ulong adjust_addr_virt(CPURISCVState *env, + target_ulong addr) +{ + return adjust_addr_body(env, addr, true); +} + #endif diff --git a/target/riscv/op_helper.c b/target/riscv/op_helper.c index eddedacf4b..20e5bd5088 100644 --- a/target/riscv/op_helper.c +++ b/target/riscv/op_helper.c @@ -472,7 +472,7 @@ target_ulong helper_hyp_hlv_bu(CPURISCVState *env, target_ulong addr) int mmu_idx = check_access_hlsv(env, false, ra); MemOpIdx oi = make_memop_idx(MO_UB, mmu_idx); - return cpu_ldb_mmu(env, addr, oi, ra); + return cpu_ldb_mmu(env, adjust_addr_virt(env, addr), oi, ra); } target_ulong helper_hyp_hlv_hu(CPURISCVState *env, target_ulong addr) @@ -481,7 +481,7 @@ target_ulong helper_hyp_hlv_hu(CPURISCVState *env, target_ulong addr) int mmu_idx = check_access_hlsv(env, false, ra); MemOpIdx oi = make_memop_idx(MO_TEUW, mmu_idx); - return cpu_ldw_mmu(env, addr, oi, ra); + return cpu_ldw_mmu(env, adjust_addr_virt(env, addr), oi, ra); } target_ulong helper_hyp_hlv_wu(CPURISCVState *env, target_ulong addr) @@ -490,7 +490,7 @@ target_ulong helper_hyp_hlv_wu(CPURISCVState *env, target_ulong addr) int mmu_idx = check_access_hlsv(env, false, ra); MemOpIdx oi = make_memop_idx(MO_TEUL, mmu_idx); - return cpu_ldl_mmu(env, addr, oi, ra); + return cpu_ldl_mmu(env, adjust_addr_virt(env, addr), oi, ra); } target_ulong helper_hyp_hlv_d(CPURISCVState *env, target_ulong addr) @@ -499,7 +499,7 @@ target_ulong helper_hyp_hlv_d(CPURISCVState *env, target_ulong addr) int mmu_idx = check_access_hlsv(env, false, ra); MemOpIdx oi = make_memop_idx(MO_TEUQ, mmu_idx); - return cpu_ldq_mmu(env, addr, oi, ra); + return cpu_ldq_mmu(env, adjust_addr_virt(env, addr), oi, ra); } void helper_hyp_hsv_b(CPURISCVState *env, target_ulong addr, target_ulong val) @@ -508,7 +508,7 @@ void helper_hyp_hsv_b(CPURISCVState *env, target_ulong addr, target_ulong val) int mmu_idx = check_access_hlsv(env, false, ra); MemOpIdx oi = make_memop_idx(MO_UB, mmu_idx); - cpu_stb_mmu(env, addr, val, oi, ra); + cpu_stb_mmu(env, adjust_addr_virt(env, addr), val, oi, ra); } void helper_hyp_hsv_h(CPURISCVState *env, target_ulong addr, target_ulong val) @@ -517,7 +517,7 @@ void helper_hyp_hsv_h(CPURISCVState *env, target_ulong addr, target_ulong val) int mmu_idx = check_access_hlsv(env, false, ra); MemOpIdx oi = make_memop_idx(MO_TEUW, mmu_idx); - cpu_stw_mmu(env, addr, val, oi, ra); + cpu_stw_mmu(env, adjust_addr_virt(env, addr), val, oi, ra); } void helper_hyp_hsv_w(CPURISCVState *env, target_ulong addr, target_ulong val) @@ -526,7 +526,7 @@ void helper_hyp_hsv_w(CPURISCVState *env, target_ulong addr, target_ulong val) int mmu_idx = check_access_hlsv(env, false, ra); MemOpIdx oi = make_memop_idx(MO_TEUL, mmu_idx); - cpu_stl_mmu(env, addr, val, oi, ra); + cpu_stl_mmu(env, adjust_addr_virt(env, addr), val, oi, ra); } void helper_hyp_hsv_d(CPURISCVState *env, target_ulong addr, target_ulong val) @@ -535,7 +535,7 @@ void helper_hyp_hsv_d(CPURISCVState *env, target_ulong addr, target_ulong val) int mmu_idx = check_access_hlsv(env, false, ra); MemOpIdx oi = make_memop_idx(MO_TEUQ, mmu_idx); - cpu_stq_mmu(env, addr, val, oi, ra); + cpu_stq_mmu(env, adjust_addr_virt(env, addr), val, oi, ra); } /* diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 0eea124b66..5386e3b97c 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -105,27 +105,6 @@ static inline uint32_t vext_max_elems(uint32_t desc, uint32_t log2_esz) return scale < 0 ? vlenb >> -scale : vlenb << scale; } -static inline target_ulong adjust_addr(CPURISCVState *env, target_ulong addr) -{ - if (riscv_cpu_mxl(env) == MXL_RV32) { - return addr; - } - RISCVPmPmm pmm = riscv_pm_get_pmm(env); - if (pmm == PMM_FIELD_DISABLED) { - return addr; - } - int pmlen = riscv_pm_get_pmlen(pmm); - bool signext = riscv_cpu_virt_mem_enabled(env); - addr = addr << pmlen; - /* sign/zero extend masked address by N-1 bit */ - if (signext) { - addr = (target_long)addr >> pmlen; - } else { - addr = addr >> pmlen; - } - return addr; -} - /* * This function checks watchpoint before real load operation. *