2 files changed, 59 insertions, 30 deletions

diff --git a/src/java/com/sun/gluegen/runtime/CPU.java b/src/java/com/sun/gluegen/runtime/CPU.java
index 0456e9f..ee6c9f5 100755
--- a/src/java/com/sun/gluegen/runtime/CPU.java
+++ b/src/java/com/sun/gluegen/runtime/CPU.java
@@ -38,6 +38,7 @@
  */
 
 package com.sun.gluegen.runtime;
+import java.security.*;
 
 /** Provides information to autogenerated struct accessors about what
     kind of data model (32- or 64-bit) is being used by the currently
@@ -47,39 +48,67 @@ public class CPU {
   private static boolean is32Bit;
 
   static {
-    // We don't seem to need an AccessController.doPrivileged() block
-    // here as these system properties are visible even to unsigned
-    // applets
-    // Note: this code is replicated in StructLayout.java
-    String os = System.getProperty("os.name").toLowerCase();
-    String cpu = System.getProperty("os.arch").toLowerCase();
-    if ((os.startsWith("windows") && cpu.equals("x86")) ||
-        (os.startsWith("windows") && cpu.equals("arm")) ||
-        (os.startsWith("linux") && cpu.equals("i386")) ||
-        (os.startsWith("linux") && cpu.equals("x86")) ||
-        (os.startsWith("mac os") && cpu.equals("ppc")) ||
-        (os.startsWith("mac os") && cpu.equals("i386")) ||
-        (os.startsWith("darwin") && cpu.equals("ppc")) ||
-        (os.startsWith("darwin") && cpu.equals("i386")) ||
-        (os.startsWith("sunos") && cpu.equals("sparc")) ||
-        (os.startsWith("sunos") && cpu.equals("x86")) ||
-        (os.startsWith("freebsd") && cpu.equals("i386")) ||
-        (os.startsWith("hp-ux") && cpu.equals("pa_risc2.0"))) {
-      is32Bit = true;
-    } else if ((os.startsWith("windows") && cpu.equals("amd64")) ||
-               (os.startsWith("linux") && cpu.equals("amd64")) ||
-               (os.startsWith("linux") && cpu.equals("x86_64")) ||
-               (os.startsWith("linux") && cpu.equals("ia64")) ||
-               (os.startsWith("mac os") && cpu.equals("x86_64")) ||
-               (os.startsWith("darwin") && cpu.equals("x86_64")) ||
-               (os.startsWith("sunos") && cpu.equals("sparcv9")) ||
-               (os.startsWith("sunos") && cpu.equals("amd64"))) {
-    } else {
-      throw new RuntimeException("Please port CPU detection (32/64 bit) to your platform (" + os + "/" + cpu + ")");
+    NativeLibrary.ensureNativeLibLoaded();
+
+    boolean done=false;
+
+    // Try to use Sun's sun.arch.data.model first ..
+    int bits = getPointerSizeInBits();
+    if ( 32 == bits || 64 == bits ) {
+        is32Bit = ( 32 == bits );
+        done = true ;
+    }
+
+    if(!done) {
+        // We don't seem to need an AccessController.doPrivileged() block
+        // here as these system properties are visible even to unsigned
+        // applets
+        // Note: this code is replicated in StructLayout.java
+        String os = System.getProperty("os.name").toLowerCase();
+        String cpu = System.getProperty("os.arch").toLowerCase();
+
+        if(!done) {
+            if ((os.startsWith("windows") && cpu.equals("x86")) ||
+                (os.startsWith("windows") && cpu.equals("arm")) ||
+                (os.startsWith("linux") && cpu.equals("i386")) ||
+                (os.startsWith("linux") && cpu.equals("x86")) ||
+                (os.startsWith("mac os") && cpu.equals("ppc")) ||
+                (os.startsWith("mac os") && cpu.equals("i386")) ||
+                (os.startsWith("darwin") && cpu.equals("ppc")) ||
+                (os.startsWith("darwin") && cpu.equals("i386")) ||
+                (os.startsWith("sunos") && cpu.equals("sparc")) ||
+                (os.startsWith("sunos") && cpu.equals("x86")) ||
+                (os.startsWith("freebsd") && cpu.equals("i386")) ||
+                (os.startsWith("hp-ux") && cpu.equals("pa_risc2.0"))) {
+              is32Bit = true;
+              done = true;
+            }
+        }
+
+        if(!done) {
+            if ((os.startsWith("windows") && cpu.equals("amd64")) ||
+                (os.startsWith("linux") && cpu.equals("amd64")) ||
+                (os.startsWith("linux") && cpu.equals("x86_64")) ||
+                (os.startsWith("linux") && cpu.equals("ia64")) ||
+                (os.startsWith("mac os") && cpu.equals("x86_64")) ||
+                (os.startsWith("darwin") && cpu.equals("x86_64")) ||
+                (os.startsWith("sunos") && cpu.equals("sparcv9")) ||
+                (os.startsWith("sunos") && cpu.equals("amd64"))) {
+              is32Bit = false;
+              done = true;
+            }
+        }
+
+        if(!done) {
+          throw new RuntimeException("Please port CPU detection (32/64 bit) to your platform (" + os + "/" + cpu + ")");
+        }
     }
   }
 
   public static boolean is32Bit() {
     return is32Bit;
   }
+
+  public static native int getPointerSizeInBits();
+
 }
diff --git a/src/java/com/sun/gluegen/runtime/NativeLibrary.java b/src/java/com/sun/gluegen/runtime/NativeLibrary.java
index 22063a5..c4c9f25 100755
--- a/src/java/com/sun/gluegen/runtime/NativeLibrary.java
+++ b/src/java/com/sun/gluegen/runtime/NativeLibrary.java
@@ -412,7 +412,7 @@ public class NativeLibrary {
   }
 
   private static volatile boolean loadedDynLinkNativeLib;
-  private static void ensureNativeLibLoaded() {
+  static void ensureNativeLibLoaded() {
     if (!loadedDynLinkNativeLib) {
       synchronized (NativeLibrary.class) {
         if (!loadedDynLinkNativeLib) {