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([177.95.89.231]) by smtp.gmail.com with ESMTPSA id ax35-20020a05687c022300b0017243edbe5bsm5586817oac.58.2023.03.22.15.21.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Mar 2023 15:21:24 -0700 (PDT) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, alistair.francis@wdc.com, bmeng@tinylab.org, liweiwei@iscas.ac.cn, zhiwei_liu@linux.alibaba.com, palmer@rivosinc.com, Daniel Henrique Barboza Subject: [PATCH for-8.1 v4 20/25] target/riscv: make validate_misa_ext() use a misa_ext val Date: Wed, 22 Mar 2023 19:19:59 -0300 Message-Id: <20230322222004.357013-21-dbarboza@ventanamicro.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230322222004.357013-1-dbarboza@ventanamicro.com> References: <20230322222004.357013-1-dbarboza@ventanamicro.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2001:4860:4864:20::2f; envelope-from=dbarboza@ventanamicro.com; helo=mail-oa1-x2f.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, 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org We have all MISA specific validations in riscv_cpu_validate_misa_ext(), and we have a guarantee that env->misa_ext will always be in sync with cpu->cfg at this point during realize time, so let's convert it to use a 'misa_ext' parameter instead of reading cpu->cfg. This will prepare the function to be used in write_misa() where we won't have an updated cpu->cfg object to work with. riscv_cpu_validate_v() is changed to receive a const pointer to the cpu->cfg object via riscv_cpu_cfg(). Signed-off-by: Daniel Henrique Barboza --- target/riscv/cpu.c | 29 ++++++++++++++++------------- 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index f1e82a8dda..bd90e1d329 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -930,7 +930,8 @@ static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info) } } -static void riscv_cpu_validate_v(CPURISCVState *env, RISCVCPUConfig *cfg, +static void riscv_cpu_validate_v(CPURISCVState *env, + const RISCVCPUConfig *cfg, Error **errp) { int vext_version = VEXT_VERSION_1_00_0; @@ -1016,41 +1017,43 @@ static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) } } -static void riscv_cpu_validate_misa_ext(RISCVCPU *cpu, Error **errp) + +static void riscv_cpu_validate_misa_ext(CPURISCVState *env, + uint32_t misa_ext, + Error **errp) { - CPURISCVState *env = &cpu->env; Error *local_err = NULL; - if (cpu->cfg.ext_i && cpu->cfg.ext_e) { + if (misa_ext & RVI && misa_ext & RVE) { error_setg(errp, "I and E extensions are incompatible"); return; } - if (!cpu->cfg.ext_i && !cpu->cfg.ext_e) { + if (!(misa_ext & RVI) && !(misa_ext & RVE)) { error_setg(errp, "Either I or E extension must be set"); return; } - if (cpu->cfg.ext_s && !cpu->cfg.ext_u) { + if (misa_ext & RVS && !(misa_ext & RVU)) { error_setg(errp, "Setting S extension without U extension is illegal"); return; } - if (cpu->cfg.ext_h && !cpu->cfg.ext_i) { + if (misa_ext & RVH && !(misa_ext & RVI)) { error_setg(errp, "H depends on an I base integer ISA with 32 x registers"); return; } - if (cpu->cfg.ext_h && !cpu->cfg.ext_s) { + if (misa_ext & RVH && !(misa_ext & RVS)) { error_setg(errp, "H extension implicitly requires S-mode"); return; } - if (cpu->cfg.ext_d && !cpu->cfg.ext_f) { + if (misa_ext & RVD && !(misa_ext & RVF)) { error_setg(errp, "D extension requires F extension"); return; } @@ -1064,13 +1067,13 @@ static void riscv_cpu_validate_misa_ext(RISCVCPU *cpu, Error **errp) * 50+ entries of isa_edata_arr[] just to check the RVH * entry. */ - if (cpu->cfg.ext_h && env->priv_ver < PRIV_VERSION_1_12_0) { + if (misa_ext & RVH && env->priv_ver < PRIV_VERSION_1_12_0) { error_setg(errp, "H extension requires priv spec 1.12.0"); return; } - if (cpu->cfg.ext_v) { - riscv_cpu_validate_v(env, &cpu->cfg, &local_err); + if (misa_ext & RVV) { + riscv_cpu_validate_v(env, riscv_cpu_cfg(env), &local_err); if (local_err != NULL) { error_propagate(errp, local_err); return; @@ -1355,7 +1358,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) env->misa_ext_mask = env->misa_ext; } - riscv_cpu_validate_misa_ext(cpu, &local_err); + riscv_cpu_validate_misa_ext(env, env->misa_ext, &local_err); if (local_err != NULL) { error_propagate(errp, local_err); return;