From patchwork Thu Oct 22 08:04:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Baturo X-Patchwork-Id: 11850485 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2272E14B7 for ; Thu, 22 Oct 2020 08:08:04 +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 C137220936 for ; Thu, 22 Oct 2020 08:08:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="QHphouJt" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C137220936 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:37454 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kVVdi-0004rL-PH for patchwork-qemu-devel@patchwork.kernel.org; Thu, 22 Oct 2020 04:08:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42418) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVVaf-000894-1k; Thu, 22 Oct 2020 04:04:53 -0400 Received: from mail-lf1-x142.google.com ([2a00:1450:4864:20::142]:44886) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kVVac-0006vB-Fw; Thu, 22 Oct 2020 04:04:52 -0400 Received: by mail-lf1-x142.google.com with SMTP id b1so1081868lfp.11; Thu, 22 Oct 2020 01:04:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=wX2ZkHWZTsLegDRadNX3/LscZ8sVu41yZQYaAwn+M+o=; b=QHphouJt5o6A9ta685Lt8Xr19qrkDlay/vfYsHLOM/ubAKh1LShFVq9pw7OysDgvtH jp/X6QJhZ9k2IAPg9kg4AQ/lH26TXoO7VJR/GwGZ6WPKHV8IyqQiGXg5hzbmgEuu+AN4 iQXwK0f1IQwjQ7XgYT5lpqd9J9iJYbDQIknHlZsSess6BBJzuLC6mF+khFBnaHThstw+ UbXCqfB6jiAfAoGM385kDJSd+2ZioY2oACIcUa6CNurl8mifyh88UQG+EQMnnhXhkj6x WIz+++JGLSIqmC62d6oYkSAihYWwm8wdt+BjptTWAWV+87SGIOvxIa0IYEpq2B1ek5Cd m4rg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=wX2ZkHWZTsLegDRadNX3/LscZ8sVu41yZQYaAwn+M+o=; b=BDYM33Zhbvt6sXdHdI9OsD4cpURm/d4GSGW+7qz8paRkDhP/mpxZj1NAw1VCB8A0Mp gV+mDlKezhgrMFbjpauqr6LE/QkAncC6ihUfsSXvd5BLNXzp6HABFTSqdstuV3PneBxA AvfH9hS1MNKgAaa12iVq5CtxAnQWO61CsFVhU5awAKHTsM0M/3KImhIM3VunD2bbSDIh /XrbI5f5WCSZEiDXkjTa5VHUYwwloMxPWrBj48x2WyPkOvuyu55oF/cWOulwMsV3gSGe E7MratfoaQy43bBTlA3jjuZsMVfgIZVWHWHWrJM/5V2KIlILMu3U+iy3tb0wtJB70uQX p43A== X-Gm-Message-State: AOAM5305kvW727q/alQfhGCHoYUWGcrnp/ZUQ5FOUBBd4kd9NWw+F10X KSSc58X2jMBY0zvsh1l805E= X-Google-Smtp-Source: ABdhPJx/pBx/KG+bCJfSegZEvCzzwvKtzcAkPMdQm9rCsXUESEXjhBIzk+OuPEELTc49cGg53879Eg== X-Received: by 2002:a19:7f43:: with SMTP id a64mr397873lfd.449.1603353888267; Thu, 22 Oct 2020 01:04:48 -0700 (PDT) Received: from neptune.lab ([46.39.229.104]) by smtp.googlemail.com with ESMTPSA id l8sm143682lfk.203.2020.10.22.01.04.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Oct 2020 01:04:47 -0700 (PDT) From: Alexey Baturo X-Google-Original-From: Alexey Baturo To: Subject: [PATCH v6 5/6] [RISCV_PM] Implement address masking functions required for RISC-V Pointer Masking extension Date: Thu, 22 Oct 2020 11:04:39 +0300 Message-Id: <20201022080440.10069-6-space.monkey.delivers@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201022080440.10069-1-space.monkey.delivers@gmail.com> References: <20201022080440.10069-1-space.monkey.delivers@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::142; envelope-from=baturo.alexey@gmail.com; helo=mail-lf1-x142.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: baturo.alexey@gmail.com, qemu-riscv@nongnu.org, sagark@eecs.berkeley.edu, kbastian@mail.uni-paderborn.de, richard.henderson@linaro.org, qemu-devel@nongnu.org, space.monkey.delivers@gmail.com, Alistair.Francis@wdc.com, kupokupokupopo@gmail.com, palmer@dabbelt.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Anatoly Parshintsev Signed-off-by: Anatoly Parshintsev --- target/riscv/cpu.h | 19 +++++++++++++++++++ target/riscv/translate.c | 34 ++++++++++++++++++++++++++++++++-- 2 files changed, 51 insertions(+), 2 deletions(-) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index c236f01fff..13accaa232 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -386,6 +386,7 @@ FIELD(TB_FLAGS, VL_EQ_VLMAX, 2, 1) FIELD(TB_FLAGS, LMUL, 3, 2) FIELD(TB_FLAGS, SEW, 5, 3) FIELD(TB_FLAGS, VILL, 8, 1) +FIELD(TB_FLAGS, PM_ENABLED, 9, 1) /* * A simplification for VLMAX @@ -432,6 +433,24 @@ static inline void cpu_get_tb_cpu_state(CPURISCVState *env, target_ulong *pc, if (riscv_cpu_fp_enabled(env)) { flags |= env->mstatus & MSTATUS_FS; } + if (riscv_has_ext(env, RVJ)) { + int priv = cpu_mmu_index(env, false); + bool pm_enabled = false; + switch (priv) { + case PRV_U: + pm_enabled = env->mmte & U_PM_ENABLE; + break; + case PRV_S: + pm_enabled = env->mmte & S_PM_ENABLE; + break; + case PRV_M: + pm_enabled = env->mmte & M_PM_ENABLE; + break; + default: + g_assert_not_reached(); + } + flags = FIELD_DP32(flags, TB_FLAGS, PM_ENABLED, pm_enabled); + } #endif *pflags = flags; } diff --git a/target/riscv/translate.c b/target/riscv/translate.c index a7cbf909f3..b3e7b93bc9 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -36,6 +36,9 @@ static TCGv cpu_gpr[32], cpu_pc, cpu_vl; static TCGv_i64 cpu_fpr[32]; /* assume F and D extensions */ static TCGv load_res; static TCGv load_val; +/* globals for PM CSRs */ +static TCGv pm_mask[4]; +static TCGv pm_base[4]; #include "exec/gen-icount.h" @@ -63,6 +66,10 @@ typedef struct DisasContext { uint16_t vlen; uint16_t mlen; bool vl_eq_vlmax; + /* PointerMasking extension */ + bool pm_enabled; + TCGv pm_mask; + TCGv pm_base; } DisasContext; #ifdef TARGET_RISCV64 @@ -102,13 +109,19 @@ static void gen_nanbox_s(TCGv_i64 out, TCGv_i64 in) } /* - * Temp stub: generates address adjustment for PointerMasking + * Generates address adjustment for PointerMasking */ static void gen_pm_adjust_address(DisasContext *s, TCGv_i64 dst, TCGv_i64 src) { - tcg_gen_mov_i64(dst, src); + if (!s->pm_enabled) { + /* Load unmodified address */ + tcg_gen_mov_i64(dst, src); + } else { + tcg_gen_andc_i64(dst, src, s->pm_mask); + tcg_gen_or_i64(dst, dst, s->pm_base); + } } /* @@ -826,6 +839,10 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) ctx->lmul = FIELD_EX32(tb_flags, TB_FLAGS, LMUL); ctx->mlen = 1 << (ctx->sew + 3 - ctx->lmul); ctx->vl_eq_vlmax = FIELD_EX32(tb_flags, TB_FLAGS, VL_EQ_VLMAX); + ctx->pm_enabled = FIELD_EX32(tb_flags, TB_FLAGS, PM_ENABLED); + int priv = cpu_mmu_index(env, false); + ctx->pm_mask = pm_mask[priv]; + ctx->pm_base = pm_base[priv]; } static void riscv_tr_tb_start(DisasContextBase *db, CPUState *cpu) @@ -945,4 +962,17 @@ void riscv_translate_init(void) "load_res"); load_val = tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, load_val), "load_val"); + /* Assign PM CSRs to tcg globals */ + pm_mask[PRV_U] = + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, upmmask), "upmmask"); + pm_base[PRV_U] = + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, upmbase), "upmbase"); + pm_mask[PRV_S] = + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, spmmask), "spmmask"); + pm_base[PRV_S] = + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, spmbase), "spmbase"); + pm_mask[PRV_M] = + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, mpmmask), "mpmmask"); + pm_base[PRV_M] = + tcg_global_mem_new(cpu_env, offsetof(CPURISCVState, mpmbase), "mpmbase"); }