target/riscv: remove cpu->cfg.ext_d

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

Remove the old "d" property and 'ext_d' 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: <20230406180351.570807-8-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/cpu.c

@@ -819,13 +819,12 @@ static void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
     /* Do some ISA extension error checking */
     if (cpu->cfg.ext_g && !(cpu->cfg.ext_i && cpu->cfg.ext_m &&
                             riscv_has_ext(env, RVA) &&
-                            cpu->cfg.ext_f && cpu->cfg.ext_d &&
+                            cpu->cfg.ext_f && riscv_has_ext(env, RVD) &&
                             cpu->cfg.ext_icsr && cpu->cfg.ext_ifencei)) {
         warn_report("Setting G will also set IMAFD_Zicsr_Zifencei");
         cpu->cfg.ext_i = true;
         cpu->cfg.ext_m = true;
         cpu->cfg.ext_f = true;
-        cpu->cfg.ext_d = true;
         cpu->cfg.ext_icsr = true;
         cpu->cfg.ext_ifencei = true;
 
@@ -881,7 +880,7 @@ static void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         return;
     }
 
-    if (cpu->cfg.ext_d && !cpu->cfg.ext_f) {
+    if (riscv_has_ext(env, RVD) && !cpu->cfg.ext_f) {
         error_setg(errp, "D extension requires F extension");
         return;
     }
@@ -901,7 +900,7 @@ static void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         cpu->cfg.ext_zve32f = true;
     }
 
-    if (cpu->cfg.ext_zve64d && !cpu->cfg.ext_d) {
+    if (cpu->cfg.ext_zve64d && !riscv_has_ext(env, RVD)) {
         error_setg(errp, "Zve64d/V extensions require D extension");
         return;
     }
@@ -961,7 +960,7 @@ static void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         if (cpu->cfg.ext_f && env->misa_mxl_max == MXL_RV32) {
             cpu->cfg.ext_zcf = true;
         }
-        if (cpu->cfg.ext_d) {
+        if (riscv_has_ext(env, RVD)) {
             cpu->cfg.ext_zcd = true;
         }
     }
@@ -976,7 +975,7 @@ static void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         return;
     }
 
-    if (!cpu->cfg.ext_d && cpu->cfg.ext_zcd) {
+    if (!riscv_has_ext(env, RVD) && cpu->cfg.ext_zcd) {
         error_setg(errp, "Zcd extension requires D extension");
         return;
     }
@@ -1164,7 +1163,7 @@ static void riscv_cpu_sync_misa_cfg(CPURISCVState *env)
     if (riscv_cpu_cfg(env)->ext_f) {
         ext |= RVF;
     }
-    if (riscv_cpu_cfg(env)->ext_d) {
+    if (riscv_has_ext(env, RVD)) {
         ext |= RVD;
     }
     if (riscv_has_ext(env, RVC)) {
@@ -1499,6 +1498,8 @@ static const RISCVCPUMisaExtConfig misa_ext_cfgs[] = {
      .misa_bit = RVA, .enabled = true},
     {.name = "c", .description = "Compressed instructions",
      .misa_bit = RVC, .enabled = true},
+    {.name = "d", .description = "Double-precision float point",
+     .misa_bit = RVD, .enabled = true},
 };
 
 static void riscv_cpu_add_misa_properties(Object *cpu_obj)
@@ -1526,7 +1527,6 @@ static Property riscv_cpu_extensions[] = {
     DEFINE_PROP_BOOL("g", RISCVCPU, cfg.ext_g, false),
     DEFINE_PROP_BOOL("m", RISCVCPU, cfg.ext_m, true),
     DEFINE_PROP_BOOL("f", RISCVCPU, cfg.ext_f, true),
-    DEFINE_PROP_BOOL("d", RISCVCPU, cfg.ext_d, true),
     DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true),
     DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true),
     DEFINE_PROP_BOOL("v", RISCVCPU, cfg.ext_v, false),
@@ -1647,7 +1647,6 @@ static void register_cpu_props(Object *obj)
         cpu->cfg.ext_e = misa_ext & RVE;
         cpu->cfg.ext_m = misa_ext & RVM;
         cpu->cfg.ext_f = misa_ext & RVF;
-        cpu->cfg.ext_d = misa_ext & RVD;
         cpu->cfg.ext_v = misa_ext & RVV;
         cpu->cfg.ext_s = misa_ext & RVS;
         cpu->cfg.ext_u = misa_ext & RVU;

target/riscv/cpu.h

@@ -427,7 +427,6 @@ struct RISCVCPUConfig {
     bool ext_g;
     bool ext_m;
     bool ext_f;
-    bool ext_d;
     bool ext_s;
     bool ext_u;
     bool ext_h;