haraldwolff/qemu-patch-raspberry4
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sh4: simplify superh_cpu_class_by_name()

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currently for sh4 cpu_model argument for '-cpu' option
could be either 'cpu model' name or cpu_typename.

however typically '-cpu' takes 'cpu model' name and
cpu type for sh4 target isn't advertised publicly
('-cpu help' prints only 'cpu model' names) so we
shouldn't care about this use case (it's more of a bug).

1. Drop '-cpu cpu_typename' to align with the rest of
   targets.
2. Compose searched for typename from cpu model and use
   it with object_class_by_name() directly instead of
   over-complicated
       object_class_get_list()
       g_slist_find_custom() + superh_cpu_name_compare()

With #1 droped, #2 could be used for both lookups which
simplifies superh_cpu_class_by_name() quite a bit.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-23-git-send-email-imammedo@redhat.com>
[ehabkost: Include fixup sent by Igor]
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Igor Mammedov 2017-10-05 15:50:56 +02:00 committed by Eduardo Habkost
parent 974e58d210
commit d5ebe62556
2 changed files with 13 additions and 23 deletions
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2
linux-user/main.c
View file

@ -4331,7 +4331,7 @@ int main(int argc, char **argv, char **envp)
cpu_model = "750";
# endif
#elif defined TARGET_SH4
cpu_model = TYPE_SH7785_CPU;
cpu_model = "sh7785";
#elif defined TARGET_S390X
cpu_model = "qemu";
#else

34
target/sh4/cpu.c
View file

@ -120,36 +120,26 @@ void sh4_cpu_list(FILE *f, fprintf_function cpu_fprintf)
g_slist_free(list);
}
static gint superh_cpu_name_compare(gconstpointer a, gconstpointer b)
{
const SuperHCPUClass *scc = SUPERH_CPU_CLASS(a);
const char *name = b;
return strcasecmp(scc->name, name);
}
static ObjectClass *superh_cpu_class_by_name(const char *cpu_model)
{
ObjectClass *oc;
GSList *list, *item;
char *s, *typename = NULL;
if (strcasecmp(cpu_model, "any") == 0) {
return object_class_by_name(TYPE_SH7750R_CPU);
s = g_ascii_strdown(cpu_model, -1);
if (strcmp(s, "any") == 0) {
oc = object_class_by_name(TYPE_SH7750R_CPU);
goto out;
}
oc = object_class_by_name(cpu_model);
if (oc != NULL && object_class_dynamic_cast(oc, TYPE_SUPERH_CPU) != NULL
&& !object_class_is_abstract(oc)) {
return oc;
typename = g_strdup_printf(SUPERH_CPU_TYPE_NAME("%s"), s);
oc = object_class_by_name(typename);
if (oc != NULL && object_class_is_abstract(oc)) {
oc = NULL;
}
oc = NULL;
list = object_class_get_list(TYPE_SUPERH_CPU, false);
item = g_slist_find_custom(list, cpu_model, superh_cpu_name_compare);
if (item != NULL) {
oc = item->data;
}
g_slist_free(list);
out:
g_free(s);
g_free(typename);
return oc;
}