cpus: Move target-agnostic methods out of cpu-target.c

Various methods of cpu-target.c don't use any target-specific
knowledge at all and can be built once in the target-agnostic
cpu-common.c file.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20250417165430.58213-4-philmd@linaro.org>

cpu-target.c

@@ -19,94 +19,19 @@
 
 #include "qemu/osdep.h"
 #include "cpu.h"
-#include "qapi/error.h"
-#include "qemu/error-report.h"
-#include "qemu/qemu-print.h"
-#include "qemu/target-info.h"
 #include "system/accel-ops.h"
 #include "system/cpus.h"
 #include "exec/cpu-common.h"
 #include "exec/tswap.h"
 #include "exec/replay-core.h"
 #include "exec/log.h"
-#include "accel/accel-cpu-target.h"
+#include "hw/core/cpu.h"
 #include "trace/trace-root.h"
 
 /* Validate correct placement of CPUArchState. */
 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, parent_obj) != 0);
 QEMU_BUILD_BUG_ON(offsetof(ArchCPU, env) != sizeof(CPUState));
 
-char *cpu_model_from_type(const char *typename)
-{
-    g_autofree char *suffix = g_strdup_printf("-%s", target_cpu_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;
-    CPUClass *cc;
-    gchar **model_pieces;
-    const char *cpu_type;
-
-    model_pieces = g_strsplit(cpu_option, ",", 2);
-    if (!model_pieces[0]) {
-        error_report("-cpu option cannot be empty");
-        exit(1);
-    }
-
-    oc = cpu_class_by_name(target_cpu_type(), model_pieces[0]);
-    if (oc == NULL) {
-        error_report("unable to find CPU model '%s'", model_pieces[0]);
-        g_strfreev(model_pieces);
-        exit(EXIT_FAILURE);
-    }
-
-    cpu_type = object_class_get_name(oc);
-    cc = CPU_CLASS(oc);
-    cc->parse_features(cpu_type, model_pieces[1], &error_fatal);
-    g_strfreev(model_pieces);
-    return cpu_type;
-}
-
-static void cpu_list_entry(gpointer data, gpointer user_data)
-{
-    CPUClass *cc = CPU_CLASS(OBJECT_CLASS(data));
-    const char *typename = object_class_get_name(OBJECT_CLASS(data));
-    g_autofree char *model = cpu_model_from_type(typename);
-
-    if (cc->deprecation_note) {
-        qemu_printf("  %s (deprecated)\n", model);
-    } else {
-        qemu_printf("  %s\n", model);
-    }
-}
-
-void list_cpus(void)
-{
-    CPUClass *cc = CPU_CLASS(object_class_by_name(target_cpu_type()));
-
-    if (cc->list_cpus) {
-        cc->list_cpus();
-    } else {
-        GSList *list;
-
-        list = object_class_get_list_sorted(TYPE_CPU, false);
-        qemu_printf("Available CPUs:\n");
-        g_slist_foreach(list, cpu_list_entry, NULL);
-        g_slist_free(list);
-    }
-}
-
 /* enable or disable single step mode. EXCP_DEBUG is returned by the
    CPU loop after each instruction */
 void cpu_single_step(CPUState *cpu, int enabled)

hw/core/cpu-common.c

@@ -25,6 +25,9 @@
 #include "qemu/log.h"
 #include "qemu/main-loop.h"
 #include "qemu/lockcnt.h"
+#include "qemu/error-report.h"
+#include "qemu/qemu-print.h"
+#include "qemu/target-info.h"
 #include "exec/log.h"
 #include "exec/gdbstub.h"
 #include "system/tcg.h"
@@ -152,6 +155,21 @@ ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model)
     return NULL;
 }
 
+char *cpu_model_from_type(const char *typename)
+{
+    g_autofree char *suffix = g_strdup_printf("-%s", target_cpu_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);
+}
+
 static void cpu_common_parse_features(const char *typename, char *features,
                                       Error **errp)
 {
@@ -183,6 +201,33 @@ static void cpu_common_parse_features(const char *typename, char *features,
     }
 }
 
+const char *parse_cpu_option(const char *cpu_option)
+{
+    ObjectClass *oc;
+    CPUClass *cc;
+    gchar **model_pieces;
+    const char *cpu_type;
+
+    model_pieces = g_strsplit(cpu_option, ",", 2);
+    if (!model_pieces[0]) {
+        error_report("-cpu option cannot be empty");
+        exit(1);
+    }
+
+    oc = cpu_class_by_name(target_cpu_type(), model_pieces[0]);
+    if (oc == NULL) {
+        error_report("unable to find CPU model '%s'", model_pieces[0]);
+        g_strfreev(model_pieces);
+        exit(EXIT_FAILURE);
+    }
+
+    cpu_type = object_class_get_name(oc);
+    cc = CPU_CLASS(oc);
+    cc->parse_features(cpu_type, model_pieces[1], &error_fatal);
+    g_strfreev(model_pieces);
+    return cpu_type;
+}
+
 bool cpu_exec_realizefn(CPUState *cpu, Error **errp)
 {
     if (!accel_cpu_common_realize(cpu, errp)) {
@@ -359,3 +404,32 @@ static void cpu_register_types(void)
 }
 
 type_init(cpu_register_types)
+
+static void cpu_list_entry(gpointer data, gpointer user_data)
+{
+    CPUClass *cc = CPU_CLASS(OBJECT_CLASS(data));
+    const char *typename = object_class_get_name(OBJECT_CLASS(data));
+    g_autofree char *model = cpu_model_from_type(typename);
+
+    if (cc->deprecation_note) {
+        qemu_printf("  %s (deprecated)\n", model);
+    } else {
+        qemu_printf("  %s\n", model);
+    }
+}
+
+void list_cpus(void)
+{
+    CPUClass *cc = CPU_CLASS(object_class_by_name(target_cpu_type()));
+
+    if (cc->list_cpus) {
+        cc->list_cpus();
+    } else {
+        GSList *list;
+
+        list = object_class_get_list_sorted(TYPE_CPU, false);
+        qemu_printf("Available CPUs:\n");
+        g_slist_foreach(list, cpu_list_entry, NULL);
+        g_slist_free(list);
+    }
+}