target/riscv/tcg: move riscv_cpu_add_misa_properties() to tcg-cpu.c

All code related to MISA TCG properties is also moved.

At this point, all TCG properties handling is done in tcg-cpu.c, all KVM
properties handling is done in kvm-cpu.c.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20230925175709.35696-18-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

1 files changed, 90 insertions, 0 deletions

diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index 30740ba..ef981ad 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -580,6 +580,96 @@ static bool tcg_cpu_realize(CPUState *cs, Error **errp)
     return true;
 }
 
+typedef struct RISCVCPUMisaExtConfig {
+    target_ulong misa_bit;
+    bool enabled;
+} RISCVCPUMisaExtConfig;
+
+static void cpu_set_misa_ext_cfg(Object *obj, Visitor *v, const char *name,
+                                 void *opaque, Error **errp)
+{
+    const RISCVCPUMisaExtConfig *misa_ext_cfg = opaque;
+    target_ulong misa_bit = misa_ext_cfg->misa_bit;
+    RISCVCPU *cpu = RISCV_CPU(obj);
+    CPURISCVState *env = &cpu->env;
+    bool value;
+
+    if (!visit_type_bool(v, name, &value, errp)) {
+        return;
+    }
+
+    if (value) {
+        env->misa_ext |= misa_bit;
+        env->misa_ext_mask |= misa_bit;
+    } else {
+        env->misa_ext &= ~misa_bit;
+        env->misa_ext_mask &= ~misa_bit;
+    }
+}
+
+static void cpu_get_misa_ext_cfg(Object *obj, Visitor *v, const char *name,
+                                 void *opaque, Error **errp)
+{
+    const RISCVCPUMisaExtConfig *misa_ext_cfg = opaque;
+    target_ulong misa_bit = misa_ext_cfg->misa_bit;
+    RISCVCPU *cpu = RISCV_CPU(obj);
+    CPURISCVState *env = &cpu->env;
+    bool value;
+
+    value = env->misa_ext & misa_bit;
+
+    visit_type_bool(v, name, &value, errp);
+}
+
+#define MISA_CFG(_bit, _enabled) \
+    {.misa_bit = _bit, .enabled = _enabled}
+
+static const RISCVCPUMisaExtConfig misa_ext_cfgs[] = {
+    MISA_CFG(RVA, true),
+    MISA_CFG(RVC, true),
+    MISA_CFG(RVD, true),
+    MISA_CFG(RVF, true),
+    MISA_CFG(RVI, true),
+    MISA_CFG(RVE, false),
+    MISA_CFG(RVM, true),
+    MISA_CFG(RVS, true),
+    MISA_CFG(RVU, true),
+    MISA_CFG(RVH, true),
+    MISA_CFG(RVJ, false),
+    MISA_CFG(RVV, false),
+    MISA_CFG(RVG, false),
+};
+
+/*
+ * We do not support user choice tracking for MISA
+ * extensions yet because, so far, we do not silently
+ * change MISA bits during realize() (RVG enables MISA
+ * bits but the user is warned about it).
+ */
+static void riscv_cpu_add_misa_properties(Object *cpu_obj)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(misa_ext_cfgs); i++) {
+        const RISCVCPUMisaExtConfig *misa_cfg = &misa_ext_cfgs[i];
+        int bit = misa_cfg->misa_bit;
+        const char *name = riscv_get_misa_ext_name(bit);
+        const char *desc = riscv_get_misa_ext_description(bit);
+
+        /* Check if KVM already created the property */
+        if (object_property_find(cpu_obj, name)) {
+            continue;
+        }
+
+        object_property_add(cpu_obj, name, "bool",
+                            cpu_get_misa_ext_cfg,
+                            cpu_set_misa_ext_cfg,
+                            NULL, (void *)misa_cfg);
+        object_property_set_description(cpu_obj, name, desc);
+        object_property_set_bool(cpu_obj, name, misa_cfg->enabled, NULL);
+    }
+}
+
 static void cpu_set_multi_ext_cfg(Object *obj, Visitor *v, const char *name,
                                   void *opaque, Error **errp)
 {