diff --git a/exec.c b/exec.c
index 18f46cd..c927fbc 100644
--- a/exec.c
+++ b/exec.c
@@ -279,17 +279,24 @@
 #endif
 }
 
-static inline PageDesc *page_find_alloc(target_ulong index)
+static inline PageDesc **page_l1_map(target_ulong index)
 {
-    PageDesc **lp, *p;
-
 #if TARGET_LONG_BITS > 32
     /* Host memory outside guest VM.  For 32-bit targets we have already
        excluded high addresses.  */
     if (index > ((target_ulong)L2_SIZE * L1_SIZE))
         return NULL;
 #endif
-    lp = &l1_map[index >> L2_BITS];
+    return &l1_map[index >> L2_BITS];
+}
+
+static inline PageDesc *page_find_alloc(target_ulong index)
+{
+    PageDesc **lp, *p;
+    lp = page_l1_map(index);
+    if (!lp)
+        return NULL;
+
     p = *lp;
     if (!p) {
         /* allocate if not found */
@@ -316,9 +323,12 @@
 
 static inline PageDesc *page_find(target_ulong index)
 {
-    PageDesc *p;
+    PageDesc **lp, *p;
+    lp = page_l1_map(index);
+    if (!lp)
+        return NULL;
 
-    p = l1_map[index >> L2_BITS];
+    p = *lp;
     if (!p)
         return 0;
     return p + (index & (L2_SIZE - 1));