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[2403:580b:97e8:0:321:6fb2:58f1:a1b1]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21c2d3d6fbbsm8563595ad.168.2025.01.16.21.58.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Jan 2025 21:58:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1737093511; x=1737698311; 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=BW72OZaZ/D+Q71Y9FYOkne6ayz9kvCtmou7oCpmup5w=; b=AhbSc0jCVhR1/kpjVmqE6KckFRjahCXfAUTe8TNA5rT6iVbjb2oN3sY45r3aTOtlWZ H8UNTypCzTZRI7F6/wz5uak0eVjYTax/ooWObOko3cAHzgxAzdkS27whz04tLeCtGAek HV84vkeIoAG7oQ3Z9CLzgkPONZrwlbmeJ3tfenqsVScaq/UPrFTqSoFDE9eZHx98qTrK Un8Vc35tpXu3/w2pLS6FaUmaSs0hdUJKwJ5P6kzEh2P7AHCe+WNZw4vRA0U9mSMFERMA R3476ZuXeRv0EJ7HIJHvw2nZs8wOULPmDfJ1mvU7djaj+sOZW965PoRoYQp0SlGiopdi XV3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1737093511; x=1737698311; 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=BW72OZaZ/D+Q71Y9FYOkne6ayz9kvCtmou7oCpmup5w=; b=t85Zf2tRZY8XbRnLNuNd4d+STCc1e7dU2N/XWX2+Wfh6GHLx9qU6bjvmyw4hn+3KzP aJFrk3C+geA6QQtpuy2QzVNYTSyr+Yw/BVZfeWdcWgovfByiSwxYaKnaWKJn4iqFyGdH FTmubIVlOCwsJFB2AHn1S7uYBLVaaCZf5C07XdOddx9DbG7r083Cn/PuxdNKgrNRIOin L7P9GNDzd5MDIYvPmjIN5BhT/+zovS74NvuFFiYdv96VYUlo3i8w5ESEjpzDoFuDCxNX XdItqtOxBGLOGvm9PnIy8iJZPHsRLA5b2pcLN5aN7SkRQogyh6eeXCphRtWsHU4u3QGu cW7g== X-Gm-Message-State: AOJu0YxX2Lcw19tw2mPRn/ivBubpfPpPbLa2nBYAQp/1r7ovANIDbT27 lTtcskvpId4KzeyhlA5w5dmbAX+CcqzDCtPDjV84KLyp9MDtq1fLMfRyOw== X-Gm-Gg: ASbGncsLO+gTl0NhEmK7FzCP0LqqZyuZzIpqkmPx3OJXACC9ej3kjyV8fpRh/9LPTQi I0XWr984K4Ncu41KIT1FoVBwNCSVQcyZUtqwyMt6TiwDaK9JCtpFLaZ2QTkx8weIqxi5aJujJX+ tHlLf6ui8ZNmIkfcHdkrMU5/tcwJ7qbW0mmiZPg1HtFEfz7iQuwxTeRgjgNN3lQcmTbbKEsoUs5 vFsL01RU9jFUp9hXjLQYVqNjkN+MC4YmadqtlyXRE8bdFRND6j1Cn7Ri9rGpNKp3tb2RKnXj6nk ouq7VWLtWAX9fqR5o86su1QRrcAqS2t2iPH5vKCFfxnxtiC4K3iwKmljzt0w X-Google-Smtp-Source: AGHT+IFTcioo5fqZNJN6oAHy06gU+uGUBdNsspGDabuK7J8TADIfGvm+bFarBuKIPpPF2r9T5Tx3jA== X-Received: by 2002:a17:902:e5ce:b0:216:6590:d472 with SMTP id d9443c01a7336-21c3551ae48mr24905045ad.21.1737093510789; Thu, 16 Jan 2025 21:58:30 -0800 (PST) From: Alistair Francis X-Google-Original-From: Alistair Francis To: qemu-devel@nongnu.org Cc: alistair23@gmail.com, =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= , Alistair Francis Subject: [PULL 44/50] target/riscv: Add Smdbltrp CSRs handling Date: Fri, 17 Jan 2025 15:55:46 +1000 Message-ID: <20250117055552.108376-45-alistair.francis@wdc.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250117055552.108376-1-alistair.francis@wdc.com> References: <20250117055552.108376-1-alistair.francis@wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::630; envelope-from=alistair23@gmail.com; helo=mail-pl1-x630.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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_ENVFROM_END_DIGIT=0.25, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1737093880844019000 From: Cl=C3=A9ment L=C3=A9ger Add `ext_smdbltrp`in RISCVCPUConfig and implement MSTATUS.MDT behavior. Also set MDT to 1 at reset according to the specification. Signed-off-by: Cl=C3=A9ment L=C3=A9ger Reviewed-by: Alistair Francis Message-ID: <20250110125441.3208676-7-cleger@rivosinc.com> Signed-off-by: Alistair Francis --- target/riscv/cpu_bits.h | 1 + target/riscv/cpu_cfg.h | 1 + target/riscv/cpu.c | 3 +++ target/riscv/csr.c | 13 +++++++++++++ 4 files changed, 18 insertions(+) diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index a3acda4bc8..f97c48a394 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -559,6 +559,7 @@ #define MSTATUS_MPELP 0x020000000000 /* zicfilp */ #define MSTATUS_GVA 0x4000000000ULL #define MSTATUS_MPV 0x8000000000ULL +#define MSTATUS_MDT 0x40000000000ULL /* Smdbltrp extension */ =20 #define MSTATUS64_UXL 0x0000000300000000ULL #define MSTATUS64_SXL 0x0000000C00000000ULL diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h index 20e11a5bdd..aef896ba00 100644 --- a/target/riscv/cpu_cfg.h +++ b/target/riscv/cpu_cfg.h @@ -84,6 +84,7 @@ struct RISCVCPUConfig { bool ext_smcsrind; bool ext_sscsrind; bool ext_ssdbltrp; + bool ext_smdbltrp; bool ext_svadu; bool ext_svinval; bool ext_svnapot; diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 9e1ce0e1f1..e3ed11b0fd 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1064,6 +1064,9 @@ static void riscv_cpu_reset_hold(Object *obj, ResetTy= pe type) env->mstatus_hs =3D set_field(env->mstatus_hs, MSTATUS64_UXL, env->misa_mxl); } + if (riscv_cpu_cfg(env)->ext_smdbltrp) { + env->mstatus =3D set_field(env->mstatus, MSTATUS_MDT, 1); + } } env->mcause =3D 0; env->miclaim =3D MIP_SGEIP; diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 4aded3f00c..afb7544f07 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -1954,6 +1954,13 @@ static RISCVException write_mstatus(CPURISCVState *e= nv, int csrno, } } =20 + if (riscv_cpu_cfg(env)->ext_smdbltrp) { + mask |=3D MSTATUS_MDT; + if ((val & MSTATUS_MDT) !=3D 0) { + val &=3D ~MSTATUS_MIE; + } + } + if (xl !=3D MXL_RV32 || env->debugger) { if (riscv_has_ext(env, RVH)) { mask |=3D MSTATUS_MPV | MSTATUS_GVA; @@ -1996,6 +2003,12 @@ static RISCVException write_mstatush(CPURISCVState *= env, int csrno, uint64_t valh =3D (uint64_t)val << 32; uint64_t mask =3D riscv_has_ext(env, RVH) ? MSTATUS_MPV | MSTATUS_GVA = : 0; =20 + if (riscv_cpu_cfg(env)->ext_smdbltrp) { + mask |=3D MSTATUS_MDT; + if ((valh & MSTATUS_MDT) !=3D 0) { + mask |=3D MSTATUS_MIE; + } + } env->mstatus =3D (env->mstatus & ~mask) | (valh & mask); =20 return RISCV_EXCP_NONE; --=20 2.47.1