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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42d; envelope-from=mchitale@ventanamicro.com; helo=mail-pf1-x42d.google.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 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, RCVD_IN_SORBS_WEB=1.5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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" X-ZohoMail-DKIM: pass (identity @ventanamicro.com) X-ZM-MESSAGEID: 1654272701054100001 Content-Type: text/plain; charset="utf-8" If smstateen is implemented and sstateen0.fcsr is clear then the floating point operations must return illegal instruction exception. Signed-off-by: Mayuresh Chitale --- target/riscv/csr.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index ae91ae1f7e..8bbbed38ff 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -77,6 +77,10 @@ static RISCVException fs(CPURISCVState *env, int csrno) !RISCV_CPU(env_cpu(env))->cfg.ext_zfinx) { return RISCV_EXCP_ILLEGAL_INST; } + + if (!env->debugger && !riscv_cpu_fp_enabled(env)) { + return smstateen_acc_ok(env, PRV_U, SMSTATEEN0_FCSR); + } #endif return RISCV_EXCP_NONE; } @@ -1700,6 +1704,10 @@ static RISCVException write_mstateen(CPURISCVState *= env, int csrno, (1UL << SMSTATEEN0_HSENVCFG); =20 reg =3D &env->mstateen[csrno - CSR_MSTATEEN0]; + if (riscv_has_ext(env, RVF)) { + wr_mask |=3D 1UL << SMSTATEEN0_FCSR; + } + write_smstateen(env, reg, wr_mask, new_val); =20 return RISCV_EXCP_NONE; @@ -1724,6 +1732,10 @@ static RISCVException write_mstateenh(CPURISCVState = *env, int csrno, reg =3D &env->mstateen[csrno - CSR_MSTATEEN0H]; val =3D (uint64_t)new_val << 32; val |=3D *reg & 0xFFFFFFFF; + if (riscv_has_ext(env, RVF)) { + wr_mask |=3D 1UL << SMSTATEEN0_FCSR; + } + write_smstateen(env, reg, wr_mask, val); =20 return RISCV_EXCP_NONE; @@ -1745,6 +1757,10 @@ static RISCVException write_hstateen(CPURISCVState *= env, int csrno, (1UL << SMSTATEEN0_HSENVCFG); int index =3D csrno - CSR_HSTATEEN0; =20 + if (riscv_has_ext(env, RVF)) { + wr_mask |=3D 1UL << SMSTATEEN0_FCSR; + } + reg =3D &env->hstateen[index]; wr_mask &=3D env->mstateen[index]; write_smstateen(env, reg, wr_mask, new_val); @@ -1769,6 +1785,10 @@ static RISCVException write_hstateenh(CPURISCVState = *env, int csrno, uint64_t wr_mask =3D (1UL << SMSTATEEN_STATEN) | (1UL << SMSTATEEN0_HSENVCFG); =20 + if (riscv_has_ext(env, RVF)) { + wr_mask |=3D 1UL << SMSTATEEN0_FCSR; + } + reg =3D &env->hstateen[index]; val =3D (uint64_t)new_val << 32; val |=3D *reg & 0xFFFFFFFF; @@ -1794,6 +1814,10 @@ static RISCVException write_sstateen(CPURISCVState *= env, int csrno, int index =3D csrno - CSR_SSTATEEN0; bool virt =3D riscv_cpu_virt_enabled(env); =20 + if (riscv_has_ext(env, RVF)) { + wr_mask |=3D 1UL << SMSTATEEN0_FCSR; + } + reg =3D &env->sstateen[index]; if (virt) { wr_mask &=3D env->mstateen[index]; --=20 2.25.1