cpu: Add helper cpu_model_from_type()

Add helper cpu_model_from_type() to extract the CPU model name from the CPU type name in two circumstances: (1) The CPU type name is the combination of the CPU model name and suffix. (2) The CPU type name is same to the CPU model name. The helper will be used in the subsequent commits to conver the CPU type name to the CPU model name. Suggested-by: Igor Mammedov <[email protected]> Signed-off-by: Gavin Shan <[email protected]> Reviewed-by: Philippe Mathieu-Daudé <[email protected]> Reviewed-by: Richard Henderson <[email protected]> Message-ID: <[email protected]> [PMD: Mention returned string must be released with g_free()] Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
xzpeter · Jan 5, 2024 · 445946f · 445946f
1 parent d5be19f
commit 445946f
Show file tree

Hide file tree

Showing 2 changed files with 28 additions and 0 deletions.
diff --git a/cpu-target.c b/cpu-target.c
@@ -241,6 +241,21 @@ void cpu_exec_initfn(CPUState *cpu)
 #endif
 }
 
+char *cpu_model_from_type(const char *typename)
+{
+    const char *suffix = "-" CPU_RESOLVING_TYPE;
+
+    if (!object_class_by_name(typename)) {
+        return NULL;
+    }
+
+    if (g_str_has_suffix(typename, suffix)) {
+        return g_strndup(typename, strlen(typename) - strlen(suffix));
+    }
+
+    return g_strdup(typename);
+}
+
 const char *parse_cpu_option(const char *cpu_option)
 {
     ObjectClass *oc;

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
@@ -779,6 +779,19 @@ void cpu_reset(CPUState *cpu);
  */
 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model);
 
+/**
+ * cpu_model_from_type:
+ * @typename: The CPU type name
+ *
+ * Extract the CPU model name from the CPU type name. The
+ * CPU type name is either the combination of the CPU model
+ * name and suffix, or same to the CPU model name.
+ *
+ * Returns: CPU model name or NULL if the CPU class doesn't exist
+ *          The user should g_free() the string once no longer needed.
+ */
+char *cpu_model_from_type(const char *typename);
+
 /**
  * cpu_create:
  * @typename: The CPU type.