Instead of requiring every architecture to implement a class_by_name function, let them set a format string at CPUClass::class_name_format.
This will let us get rid of at least 16 class_by_name functions in the next commits. Signed-off-by: Eduardo Habkost <ehabk...@redhat.com> --- include/qom/cpu.h | 12 ++++++++++++ qom/cpu.c | 18 ++++++++++++++++-- 2 files changed, 28 insertions(+), 2 deletions(-) diff --git a/include/qom/cpu.h b/include/qom/cpu.h index fefd5c26b0..eda6a46b82 100644 --- a/include/qom/cpu.h +++ b/include/qom/cpu.h @@ -163,7 +163,19 @@ typedef struct CPUClass { DeviceClass parent_class; /*< public >*/ + /* The following fields configure CPU model name -> QOM type translation: */ + + /* + * arch-specific CPU model -> QOM type translation function. + * Optional if @class_name_format is set. + */ ObjectClass *(*class_by_name)(const char *cpu_model); + /* + * Format string for g_strdup_printf(), used to generate the CPU + * class name. + */ + const char *class_name_format; + void (*parse_features)(const char *typename, char *str, Error **errp); void (*reset)(CPUState *cpu); diff --git a/qom/cpu.c b/qom/cpu.c index b971a56242..1fa64941b6 100644 --- a/qom/cpu.c +++ b/qom/cpu.c @@ -286,9 +286,23 @@ static bool cpu_common_has_work(CPUState *cs) CPUClass *cpu_class_by_name(const char *typename, const char *cpu_model) { CPUClass *cc = CPU_CLASS(object_class_by_name(typename)); + ObjectClass *oc; + char *class_name; - assert(cpu_model && cc->class_by_name); - return CPU_CLASS(cc->class_by_name(cpu_model)); + assert(cpu_model); + if (cc->class_by_name) { + return CPU_CLASS(cc->class_by_name(cpu_model)); + } + + assert(cc->class_name_format); + class_name = g_strdup_printf(cc->class_name_format, cpu_model); + oc = object_class_by_name(class_name); + g_free(class_name); + if (!oc || !object_class_dynamic_cast(oc, typename) || + object_class_is_abstract(oc)) { + return NULL; + } + return CPU_CLASS(oc); } static void cpu_common_parse_features(const char *typename, char *features, -- 2.18.0.rc1.1.g3f1ff2140