diff options
Diffstat (limited to 'target/i386/cpu.c')
| -rw-r--r-- | target/i386/cpu.c | 191 |
1 files changed, 190 insertions, 1 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 0a71594445..139b7ea12e 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -29,10 +29,16 @@ #include "qemu/option.h" #include "qemu/config-file.h" #include "qapi/qmp/qerror.h" +#include "qapi/qmp/qstring.h" +#include "qapi/qmp/qdict.h" +#include "qapi/qmp/qbool.h" +#include "qapi/qmp/qint.h" +#include "qapi/qmp/qfloat.h" #include "qapi-types.h" #include "qapi-visit.h" #include "qapi/visitor.h" +#include "qom/qom-qobject.h" #include "sysemu/arch_init.h" #if defined(CONFIG_KVM) @@ -2288,7 +2294,7 @@ static void x86_cpu_apply_props(X86CPU *cpu, PropValue *props) } } -/* Load data from X86CPUDefinition +/* Load data from X86CPUDefinition into a X86CPU object */ static void x86_cpu_load_def(X86CPU *cpu, X86CPUDefinition *def, Error **errp) { @@ -2297,6 +2303,11 @@ static void x86_cpu_load_def(X86CPU *cpu, X86CPUDefinition *def, Error **errp) char host_vendor[CPUID_VENDOR_SZ + 1]; FeatureWord w; + /*NOTE: any property set by this function should be returned by + * x86_cpu_static_props(), so static expansion of + * query-cpu-model-expansion is always complete. + */ + /* CPU models only set _minimum_ values for level/xlevel: */ object_property_set_int(OBJECT(cpu), def->level, "min-level", errp); object_property_set_int(OBJECT(cpu), def->xlevel, "min-xlevel", errp); @@ -2341,6 +2352,184 @@ static void x86_cpu_load_def(X86CPU *cpu, X86CPUDefinition *def, Error **errp) } +/* Return a QDict containing keys for all properties that can be included + * in static expansion of CPU models. All properties set by x86_cpu_load_def() + * must be included in the dictionary. + */ +static QDict *x86_cpu_static_props(void) +{ + FeatureWord w; + int i; + static const char *props[] = { + "min-level", + "min-xlevel", + "family", + "model", + "stepping", + "model-id", + "vendor", + "lmce", + NULL, + }; + static QDict *d; + + if (d) { + return d; + } + + d = qdict_new(); + for (i = 0; props[i]; i++) { + qdict_put_obj(d, props[i], qnull()); + } + + for (w = 0; w < FEATURE_WORDS; w++) { + FeatureWordInfo *fi = &feature_word_info[w]; + int bit; + for (bit = 0; bit < 32; bit++) { + if (!fi->feat_names[bit]) { + continue; + } + qdict_put_obj(d, fi->feat_names[bit], qnull()); + } + } + + return d; +} + +/* Add an entry to @props dict, with the value for property. */ +static void x86_cpu_expand_prop(X86CPU *cpu, QDict *props, const char *prop) +{ + QObject *value = object_property_get_qobject(OBJECT(cpu), prop, + &error_abort); + + qdict_put_obj(props, prop, value); +} + +/* Convert CPU model data from X86CPU object to a property dictionary + * that can recreate exactly the same CPU model. + */ +static void x86_cpu_to_dict(X86CPU *cpu, QDict *props) +{ + QDict *sprops = x86_cpu_static_props(); + const QDictEntry *e; + + for (e = qdict_first(sprops); e; e = qdict_next(sprops, e)) { + const char *prop = qdict_entry_key(e); + x86_cpu_expand_prop(cpu, props, prop); + } +} + +static void object_apply_props(Object *obj, QDict *props, Error **errp) +{ + const QDictEntry *prop; + Error *err = NULL; + + for (prop = qdict_first(props); prop; prop = qdict_next(props, prop)) { + object_property_set_qobject(obj, qdict_entry_value(prop), + qdict_entry_key(prop), &err); + if (err) { + break; + } + } + + error_propagate(errp, err); +} + +/* Create X86CPU object according to model+props specification */ +static X86CPU *x86_cpu_from_model(const char *model, QDict *props, Error **errp) +{ + X86CPU *xc = NULL; + X86CPUClass *xcc; + Error *err = NULL; + + xcc = X86_CPU_CLASS(cpu_class_by_name(TYPE_X86_CPU, model)); + if (xcc == NULL) { + error_setg(&err, "CPU model '%s' not found", model); + goto out; + } + + xc = X86_CPU(object_new(object_class_get_name(OBJECT_CLASS(xcc)))); + if (props) { + object_apply_props(OBJECT(xc), props, &err); + if (err) { + goto out; + } + } + + x86_cpu_expand_features(xc, &err); + if (err) { + goto out; + } + +out: + if (err) { + error_propagate(errp, err); + object_unref(OBJECT(xc)); + xc = NULL; + } + return xc; +} + +CpuModelExpansionInfo * +arch_query_cpu_model_expansion(CpuModelExpansionType type, + CpuModelInfo *model, + Error **errp) +{ + X86CPU *xc = NULL; + Error *err = NULL; + CpuModelExpansionInfo *ret = g_new0(CpuModelExpansionInfo, 1); + QDict *props = NULL; + const char *base_name; + + xc = x86_cpu_from_model(model->name, + model->has_props ? + qobject_to_qdict(model->props) : + NULL, &err); + if (err) { + goto out; + } + + + switch (type) { + case CPU_MODEL_EXPANSION_TYPE_STATIC: + /* Static expansion will be based on "base" only */ + base_name = "base"; + break; + case CPU_MODEL_EXPANSION_TYPE_FULL: + /* As we don't return every single property, full expansion needs + * to keep the original model name+props, and add extra + * properties on top of that. + */ + base_name = model->name; + if (model->has_props && model->props) { + props = qdict_clone_shallow(qobject_to_qdict(model->props)); + } + break; + default: + error_setg(&err, "Unsupportted expansion type"); + goto out; + } + + if (!props) { + props = qdict_new(); + } + x86_cpu_to_dict(xc, props); + + ret->model = g_new0(CpuModelInfo, 1); + ret->model->name = g_strdup(base_name); + ret->model->props = QOBJECT(props); + ret->model->has_props = true; + +out: + object_unref(OBJECT(xc)); + if (err) { + error_propagate(errp, err); + qapi_free_CpuModelExpansionInfo(ret); + ret = NULL; + } + return ret; +} + X86CPU *cpu_x86_init(const char *cpu_model) { return X86_CPU(cpu_generic_init(TYPE_X86_CPU, cpu_model)); |