Hi Igor,
On 08/18/2017 07:08 AM, Igor Mammedov wrote:
QOMfy cpu models handling introducing propper cpu types
for each cpu model.
Signed-off-by: Igor Mammedov <imamm...@redhat.com>
---
with this and conversion of features to properties,
it would be possible to replace cpu_sparc_init() with
cpu_generic_init() and reuse common -cpu handling
infrastructure.
CC: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
CC: Artyom Tarasenko <atar4q...@gmail.com>
CC: Philippe Mathieu-Daudé <f4...@amsat.org>
v2:
* make base class abstract (Philippe Mathieu-Daudé <f4...@amsat.org>)
---
target/sparc/cpu-qom.h | 2 +
target/sparc/cpu.c | 121 +++++++++++++++++++++++++++++++++----------------
2 files changed, 84 insertions(+), 39 deletions(-)
diff --git a/target/sparc/cpu-qom.h b/target/sparc/cpu-qom.h
index f63af72..af6d57a 100644
--- a/target/sparc/cpu-qom.h
+++ b/target/sparc/cpu-qom.h
@@ -35,6 +35,7 @@
#define SPARC_CPU_GET_CLASS(obj) \
OBJECT_GET_CLASS(SPARCCPUClass, (obj), TYPE_SPARC_CPU)
+typedef struct sparc_def_t sparc_def_t;
/**
* SPARCCPUClass:
* @parent_realize: The parent class' realize handler.
@@ -49,6 +50,7 @@ typedef struct SPARCCPUClass {
DeviceRealize parent_realize;
void (*parent_reset)(CPUState *cpu);
+ sparc_def_t *cpu_def;
} SPARCCPUClass;
typedef struct SPARCCPU SPARCCPU;
diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c
index d606eb5..2994c09 100644
--- a/target/sparc/cpu.c
+++ b/target/sparc/cpu.c
@@ -25,8 +25,6 @@
//#define DEBUG_FEATURES
-static int cpu_sparc_find_by_name(sparc_def_t *cpu_def, const char *cpu_model);
-
/* CPUClass::reset() */
static void sparc_cpu_reset(CPUState *s)
{
@@ -111,17 +109,9 @@ static int cpu_sparc_register(SPARCCPU *cpu, const char
*cpu_model)
{
CPUSPARCState *env = &cpu->env;
char *s = g_strdup(cpu_model);
- char *featurestr, *name = strtok(s, ",");
- sparc_def_t def1, *def = &def1;
+ char *featurestr = strtok(s, ",");
Error *err = NULL;
- if (cpu_sparc_find_by_name(def, name) < 0) {
- g_free(s);
- return -1;
- }
-
- env->def = g_memdup(def, sizeof(*def));
-
featurestr = strtok(NULL, ",");
sparc_cpu_parse_features(CPU(cpu), featurestr, &err);
g_free(s);
@@ -130,18 +120,18 @@ static int cpu_sparc_register(SPARCCPU *cpu, const char
*cpu_model)
return -1;
}
- env->version = def->iu_version;
- env->fsr = def->fpu_version;
- env->nwindows = def->nwindows;
+ env->version = env->def->iu_version;
+ env->fsr = env->def->fpu_version;
+ env->nwindows = env->def->nwindows;
#if !defined(TARGET_SPARC64)
- env->mmuregs[0] |= def->mmu_version;
+ env->mmuregs[0] |= env->def->mmu_version;
cpu_sparc_set_id(env, 0);
- env->mxccregs[7] |= def->mxcc_version;
+ env->mxccregs[7] |= env->def->mxcc_version;
#else
- env->mmu_version = def->mmu_version;
- env->maxtl = def->maxtl;
- env->version |= def->maxtl << 8;
- env->version |= def->nwindows - 1;
+ env->mmu_version = env->def->mmu_version;
+ env->maxtl = env->def->maxtl;
+ env->version |= env->def->maxtl << 8;
+ env->version |= env->def->nwindows - 1;
#endif
return 0;
}
@@ -149,8 +139,19 @@ static int cpu_sparc_register(SPARCCPU *cpu, const char
*cpu_model)
SPARCCPU *cpu_sparc_init(const char *cpu_model)
{
SPARCCPU *cpu;
+ ObjectClass *oc;
+ char *str, *name;
+
+ str = g_strdup(cpu_model);
+ name = strtok(str, ",");
you can free 'str' once here:
g_free(str);
+ oc = cpu_class_by_name(TYPE_SPARC_CPU, name);
+ if (oc == NULL) {
+ g_free(str);
drop
+ return NULL;
+ }
+ g_free(str);
drop
- cpu = SPARC_CPU(object_new(TYPE_SPARC_CPU));
+ cpu = SPARC_CPU(object_new(object_class_get_name(oc)));
if (cpu_sparc_register(cpu, cpu_model) < 0) {
object_unref(OBJECT(cpu));
@@ -553,23 +554,6 @@ static void add_flagname_to_bitmaps(const char *flagname,
uint32_t *features)
error_report("CPU feature %s not found", flagname);
}
-static int cpu_sparc_find_by_name(sparc_def_t *cpu_def, const char *name)
-{
- unsigned int i;
- const sparc_def_t *def = NULL;
-
- for (i = 0; i < ARRAY_SIZE(sparc_defs); i++) {
- if (strcasecmp(name, sparc_defs[i].name) == 0) {
- def = &sparc_defs[i];
- }
- }
- if (!def) {
- return -1;
- }
- memcpy(cpu_def, def, sizeof(*def));
- return 0;
-}
-
static void sparc_cpu_parse_features(CPUState *cs, char *features,
Error **errp)
{
@@ -796,6 +780,36 @@ static bool sparc_cpu_has_work(CPUState *cs)
cpu_interrupts_enabled(env);
}
+static char *sparc_cpu_type_name(const char *cpu_model)
+{
+ char *name = g_strdup_printf("%s-" TYPE_SPARC_CPU, cpu_model);
+ char *s = name;
+
+ /* SPARC cpu model names happen to have whitespaces,
+ * as type names shouldn't have spaces replace them with '-'
+ */
+ while ((s = strchr(s, ' '))) {
+ *s = '-';
+ }
+
+ return name;
+}
+
+static ObjectClass *sparc_cpu_class_by_name(const char *cpu_model)
+{
+ ObjectClass *oc;
+ char *typename;
+
+ if (cpu_model == NULL) {
+ return NULL;
+ }
+
+ typename = sparc_cpu_type_name(cpu_model);
+ oc = object_class_by_name(typename);
+ g_free(typename);
+ return oc;
+}
+
static void sparc_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
@@ -825,6 +839,7 @@ static void sparc_cpu_initfn(Object *obj)
{
CPUState *cs = CPU(obj);
SPARCCPU *cpu = SPARC_CPU(obj);
+ SPARCCPUClass *scc = SPARC_CPU_GET_CLASS(obj);
CPUSPARCState *env = &cpu->env;
cs->env_ptr = env;
@@ -832,6 +847,8 @@ static void sparc_cpu_initfn(Object *obj)
if (tcg_enabled()) {
gen_intermediate_code_init(env);
}
+
+ env->def = g_memdup(scc->cpu_def, sizeof(*scc->cpu_def));
}
static void sparc_cpu_uninitfn(Object *obj)
@@ -854,6 +871,7 @@ static void sparc_cpu_class_init(ObjectClass *oc, void
*data)
scc->parent_reset = cc->reset;
cc->reset = sparc_cpu_reset;
+ cc->class_by_name = sparc_cpu_class_by_name;
cc->has_work = sparc_cpu_has_work;
cc->do_interrupt = sparc_cpu_do_interrupt;
cc->cpu_exec_interrupt = sparc_cpu_exec_interrupt;
@@ -888,14 +906,39 @@ static const TypeInfo sparc_cpu_type_info = {
.instance_size = sizeof(SPARCCPU),
.instance_init = sparc_cpu_initfn,
.instance_finalize = sparc_cpu_uninitfn,
- .abstract = false,
+ .abstract = true,
.class_size = sizeof(SPARCCPUClass),
.class_init = sparc_cpu_class_init,
};
+static void sparc_cpu_cpudef_class_init(ObjectClass *oc, void *data)
+{
+ SPARCCPUClass *scc = SPARC_CPU_CLASS(oc);
+ scc->cpu_def = data;
+}
+
+static void sparc_register_cpudef_type(const struct sparc_def_t *def)
+{
+ char *typename = sparc_cpu_type_name(def->name);
+ TypeInfo ti = {
+ .name = typename,
+ .parent = TYPE_SPARC_CPU,
+ .class_init = sparc_cpu_cpudef_class_init,
+ .class_data = (void *)def,
+ };
+
+ type_register(&ti);
+ g_free(typename);
+}
+
static void sparc_cpu_register_types(void)
{
+ int i;
+
type_register_static(&sparc_cpu_type_info);
+ for (i = 0; i < ARRAY_SIZE(sparc_defs); i++) {
+ sparc_register_cpudef_type(&sparc_defs[i]);
+ }
}
type_init(sparc_cpu_register_types)
Anyway I can't start Aurelien's image [1] with this commit:
$ sparc-softmmu/qemu-system-sparc -hda debian_etch_sparc_small.qcow2
qemu: Unable to find Sparc CPU definition
[1] https://people.debian.org/~aurel32/qemu/sparc/
