diff options
| -rw-r--r-- | target/riscv/tcg/tcg-cpu.c | 73 |
1 files changed, 48 insertions, 25 deletions
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index f1eeaa12b9..d2a42a347b 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -42,6 +42,12 @@ static bool cpu_cfg_ext_is_user_set(uint32_t ext_offset) GUINT_TO_POINTER(ext_offset)); } +static bool cpu_misa_ext_is_user_set(uint32_t misa_bit) +{ + return g_hash_table_contains(misa_ext_user_opts, + GUINT_TO_POINTER(misa_bit)); +} + static void cpu_cfg_ext_add_user_opt(uint32_t ext_offset, bool value) { g_hash_table_insert(multi_ext_user_opts, GUINT_TO_POINTER(ext_offset), @@ -357,6 +363,46 @@ static void riscv_cpu_update_named_features(RISCVCPU *cpu) cpu->cfg.cboz_blocksize == 64; } +static void riscv_cpu_validate_g(RISCVCPU *cpu) +{ + const char *warn_msg = "RVG mandates disabled extension %s"; + uint32_t g_misa_bits[] = {RVI, RVM, RVA, RVF, RVD}; + bool send_warn = cpu_misa_ext_is_user_set(RVG); + + for (int i = 0; i < ARRAY_SIZE(g_misa_bits); i++) { + uint32_t bit = g_misa_bits[i]; + + if (riscv_has_ext(&cpu->env, bit)) { + continue; + } + + if (!cpu_misa_ext_is_user_set(bit)) { + riscv_cpu_write_misa_bit(cpu, bit, true); + continue; + } + + if (send_warn) { + warn_report(warn_msg, riscv_get_misa_ext_name(bit)); + } + } + + if (!cpu->cfg.ext_zicsr) { + if (!cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_zicsr))) { + cpu->cfg.ext_zicsr = true; + } else if (send_warn) { + warn_report(warn_msg, "zicsr"); + } + } + + if (!cpu->cfg.ext_zifencei) { + if (!cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_zifencei))) { + cpu->cfg.ext_zifencei = true; + } else if (send_warn) { + warn_report(warn_msg, "zifencei"); + } + } +} + /* * Check consistency between chosen extensions while setting * cpu->cfg accordingly. @@ -366,31 +412,8 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) CPURISCVState *env = &cpu->env; Error *local_err = NULL; - /* Do some ISA extension error checking */ - if (riscv_has_ext(env, RVG) && - !(riscv_has_ext(env, RVI) && riscv_has_ext(env, RVM) && - riscv_has_ext(env, RVA) && riscv_has_ext(env, RVF) && - riscv_has_ext(env, RVD) && - cpu->cfg.ext_zicsr && cpu->cfg.ext_zifencei)) { - - if (cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_zicsr)) && - !cpu->cfg.ext_zicsr) { - error_setg(errp, "RVG requires Zicsr but user set Zicsr to false"); - return; - } - - if (cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_zifencei)) && - !cpu->cfg.ext_zifencei) { - error_setg(errp, "RVG requires Zifencei but user set " - "Zifencei to false"); - return; - } - - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zicsr), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zifencei), true); - - env->misa_ext |= RVI | RVM | RVA | RVF | RVD; - env->misa_ext_mask |= RVI | RVM | RVA | RVF | RVD; + if (riscv_has_ext(env, RVG)) { + riscv_cpu_validate_g(cpu); } if (riscv_has_ext(env, RVI) && riscv_has_ext(env, RVE)) { |