target/riscv/cpu.c: use offset in isa_ext_is_enabled/update_enabled

We'll have future usage for a function where, given an offset of the
struct RISCVCPUConfig, the flag is updated to a certain val.

Change all existing callers to use edata->ext_enable_offset instead of
'edata'.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Message-ID: <20230901194627.1214811-14-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/cpu.c

@@ -162,18 +162,17 @@ static const struct isa_ext_data isa_edata_arr[] = {
     ISA_EXT_DATA_ENTRY(xventanacondops, PRIV_VERSION_1_12_0, ext_XVentanaCondOps),
 };
 
-static bool isa_ext_is_enabled(RISCVCPU *cpu,
-                               const struct isa_ext_data *edata)
+static bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset)
 {
-    bool *ext_enabled = (void *)&cpu->cfg + edata->ext_enable_offset;
+    bool *ext_enabled = (void *)&cpu->cfg + ext_offset;
 
     return *ext_enabled;
 }
 
-static void isa_ext_update_enabled(RISCVCPU *cpu,
-                                   const struct isa_ext_data *edata, bool en)
+static void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset,
+                                   bool en)
 {
-    bool *ext_enabled = (void *)&cpu->cfg + edata->ext_enable_offset;
+    bool *ext_enabled = (void *)&cpu->cfg + ext_offset;
 
     *ext_enabled = en;
 }
@@ -1045,9 +1044,10 @@ static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu)
 
     /* Force disable extensions if priv spec version does not match */
     for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) {
-        if (isa_ext_is_enabled(cpu, &isa_edata_arr[i]) &&
+        if (isa_ext_is_enabled(cpu, isa_edata_arr[i].ext_enable_offset) &&
             (env->priv_ver < isa_edata_arr[i].min_version)) {
-            isa_ext_update_enabled(cpu, &isa_edata_arr[i], false);
+            isa_ext_update_enabled(cpu, isa_edata_arr[i].ext_enable_offset,
+                                   false);
 #ifndef CONFIG_USER_ONLY
             warn_report("disabling %s extension for hart 0x" TARGET_FMT_lx
                         " because privilege spec version does not match",
@@ -2346,7 +2346,7 @@ static void riscv_isa_string_ext(RISCVCPU *cpu, char **isa_str,
     int i;
 
     for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) {
-        if (isa_ext_is_enabled(cpu, &isa_edata_arr[i])) {
+        if (isa_ext_is_enabled(cpu, isa_edata_arr[i].ext_enable_offset)) {
             new = g_strconcat(old, "_", isa_edata_arr[i].name, NULL);
             g_free(old);
             old = new;