ppc: simplify cpu model lookup by PVR

Signed-off-by: Igor Mammedov <[email protected]>
Signed-off-by: David Gibson <[email protected]>

target/ppc/translate_init.c

@@ -34,6 +34,7 @@
 #include "hw/ppc/ppc.h"
 #include "mmu-book3s-v3.h"
 #include "sysemu/qtest.h"
+#include "qemu/cutils.h"
 
 //#define PPC_DUMP_CPU
 //#define PPC_DEBUG_SPR
@@ -10279,22 +10280,16 @@ static ObjectClass *ppc_cpu_class_by_name(const char *name)
     char *cpu_model, *typename;
     ObjectClass *oc;
     const char *p;
-    int i, len;
-
-    /* Check if the given name is a PVR */
-    len = strlen(name);
-    if (len == 10 && name[0] == '0' && name[1] == 'x') {
-        p = name + 2;
-        goto check_pvr;
-    } else if (len == 8) {
-        p = name;
-    check_pvr:
-        for (i = 0; i < 8; i++) {
-            if (!qemu_isxdigit(*p++))
-                break;
-        }
-        if (i == 8) {
-            return OBJECT_CLASS(ppc_cpu_class_by_pvr(strtoul(name, NULL, 16)));
+    unsigned long pvr;
+
+    /* Lookup by PVR if cpu_model is valid 8 digit hex number
+     * (excl: 0x prefix if present)
+     */
+    if (!qemu_strtoul(name, &p, 16, &pvr)) {
+        int len = p - name;
+        len = (len == 10) && (name[1] == 'x') ? len - 2 : len;
+        if ((len == 8) && (*p == '\0')) {
+            return OBJECT_CLASS(ppc_cpu_class_by_pvr(pvr));
         }
     }