[PATCH v3 06/20] target/riscv: remove cpu->cfg.ext_c

[Daniel Henrique Barboza]

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

Remove the old "c" property and 'ext_c' from RISCVCPUConfig.

Signed-off-by: Daniel Henrique Barboza <dbarb...@ventanamicro.com>
Reviewed-by: Weiwei Li <liwei...@iscas.ac.cn>
---
 target/riscv/cpu.c | 7 +++----
 target/riscv/cpu.h | 1 -
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 63efd1b313..693ff10cab 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -400,7 +400,6 @@ static void rv64_thead_c906_cpu_init(Object *obj)
     set_priv_version(env, PRIV_VERSION_1_11_0);
 
     cpu->cfg.ext_g = true;
-    cpu->cfg.ext_c = true;
     cpu->cfg.ext_u = true;
     cpu->cfg.ext_s = true;
     cpu->cfg.ext_icsr = true;
@@ -1108,7 +1107,7 @@ static void riscv_cpu_sync_misa_cfg(CPURISCVState *env)
     if (riscv_cpu_cfg(env)->ext_d) {
         ext |= RVD;
     }
-    if (riscv_cpu_cfg(env)->ext_c) {
+    if (riscv_has_ext(env, RVC)) {
         ext |= RVC;
     }
     if (riscv_cpu_cfg(env)->ext_s) {
@@ -1438,6 +1437,8 @@ static void cpu_get_misa_ext_cfg(Object *obj, Visitor *v, 
const char *name,
 static const RISCVCPUMisaExtConfig misa_ext_cfgs[] = {
     {.name = "a", .description = "Atomic instructions",
      .misa_bit = RVA, .enabled = true},
+    {.name = "c", .description = "Compressed instructions",
+     .misa_bit = RVC, .enabled = true},
 };
 
 static void riscv_cpu_add_misa_properties(Object *cpu_obj)
@@ -1466,7 +1467,6 @@ static Property riscv_cpu_extensions[] = {
     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("c", RISCVCPU, cfg.ext_c, 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),
@@ -1580,7 +1580,6 @@ static void register_cpu_props(Object *obj)
         cpu->cfg.ext_f = misa_ext & RVF;
         cpu->cfg.ext_d = misa_ext & RVD;
         cpu->cfg.ext_v = misa_ext & RVV;
-        cpu->cfg.ext_c = misa_ext & RVC;
         cpu->cfg.ext_s = misa_ext & RVS;
         cpu->cfg.ext_u = misa_ext & RVU;
         cpu->cfg.ext_h = misa_ext & RVH;
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index f703888310..c6dc24d236 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -424,7 +424,6 @@ struct RISCVCPUConfig {
     bool ext_m;
     bool ext_f;
     bool ext_d;
-    bool ext_c;
     bool ext_s;
     bool ext_u;
     bool ext_h;
-- 
2.39.2