target/riscv: remove cpu->cfg.ext_j

Create a new "j" RISCVCPUMisaExtConfig property that will update
env->misa_ext* with RVJ. Instances of cpu->cfg.ext_j and similar are
replaced with riscv_has_ext(env, RVJ).

Remove the old "j" property and 'ext_j' from RISCVCPUConfig.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230406180351.570807-16-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/cpu.c

@@ -1178,7 +1178,7 @@ static void riscv_cpu_sync_misa_cfg(CPURISCVState *env)
     if (riscv_cpu_cfg(env)->ext_v) {
         ext |= RVV;
     }
-    if (riscv_cpu_cfg(env)->ext_j) {
+    if (riscv_has_ext(env, RVJ)) {
         ext |= RVJ;
     }
 
@@ -1511,6 +1511,8 @@ static const RISCVCPUMisaExtConfig misa_ext_cfgs[] = {
      .misa_bit = RVU, .enabled = true},
     {.name = "h", .description = "Hypervisor",
      .misa_bit = RVH, .enabled = true},
+    {.name = "x-j", .description = "Dynamic translated languages",
+     .misa_bit = RVJ, .enabled = false},
 };
 
 static void riscv_cpu_add_misa_properties(Object *cpu_obj)
@@ -1607,7 +1609,6 @@ static Property riscv_cpu_extensions[] = {
 
     /* These are experimental so mark with 'x-' */
     DEFINE_PROP_BOOL("x-zicond", RISCVCPU, cfg.ext_zicond, false),
-    DEFINE_PROP_BOOL("x-j", RISCVCPU, cfg.ext_j, false),
 
     DEFINE_PROP_BOOL("x-zca", RISCVCPU, cfg.ext_zca, false),
     DEFINE_PROP_BOOL("x-zcb", RISCVCPU, cfg.ext_zcb, false),
@@ -1648,7 +1649,6 @@ static void register_cpu_props(Object *obj)
      */
     if (cpu->env.misa_ext != 0) {
         cpu->cfg.ext_v = misa_ext & RVV;
-        cpu->cfg.ext_j = misa_ext & RVJ;
 
         /*
          * We don't want to set the default riscv_cpu_extensions

target/riscv/cpu.h

@@ -423,7 +423,6 @@ typedef struct {
 
 struct RISCVCPUConfig {
     bool ext_g;
-    bool ext_j;
     bool ext_v;
     bool ext_zba;
     bool ext_zbb;