Allow NWINDOWS selection (CPU feature with model specific defaults)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4690 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/target-sparc/machine.c b/target-sparc/machine.c
index 0e7a23e..aaac30b 100644
--- a/target-sparc/machine.c
+++ b/target-sparc/machine.c
@@ -31,7 +31,8 @@
 
     for(i = 0; i < 8; i++)
         qemu_put_betls(f, &env->gregs[i]);
-    for(i = 0; i < NWINDOWS * 16; i++)
+    qemu_put_be32s(f, &env->nwindows);
+    for(i = 0; i < env->nwindows * 16; i++)
         qemu_put_betls(f, &env->regbase[i]);
 
     /* FPU */
@@ -65,9 +66,12 @@
     int i;
     uint32_t tmp;
 
+    if (version_id != 4)
+        return -EINVAL;
     for(i = 0; i < 8; i++)
         qemu_get_betls(f, &env->gregs[i]);
-    for(i = 0; i < NWINDOWS * 16; i++)
+    qemu_get_be32s(f, &env->nwindows);
+    for(i = 0; i < env->nwindows * 16; i++)
         qemu_get_betls(f, &env->regbase[i]);
 
     /* FPU */