diff --git a/opengl/tools/glgen/specs/gles11/GLES30.spec b/opengl/tools/glgen/specs/gles11/GLES30.spec
index f181976..cf5a758 100644
--- a/opengl/tools/glgen/specs/gles11/GLES30.spec
+++ b/opengl/tools/glgen/specs/gles11/GLES30.spec
@@ -218,15 +218,15 @@
 void glUniformBlockBinding ( GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding )
 void glDrawArraysInstanced ( GLenum mode, GLint first, GLsizei count, GLsizei instanceCount )
 void glDrawElementsInstanced ( GLenum mode, GLsizei count, GLenum type, const GLvoid *indices, GLsizei instanceCount )
-// GLsync glFenceSync ( GLenum condition, GLbitfield flags )
-// GLboolean glIsSync ( GLsync sync )
-// void glDeleteSync ( GLsync sync )
-// GLenum glClientWaitSync ( GLsync sync, GLbitfield flags, GLuint64 timeout )
-// void glWaitSync ( GLsync sync, GLbitfield flags, GLuint64 timeout )
-// void glGetInteger64v ( GLenum pname, GLint64 *params )
-// void glGetSynciv ( GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, GLint *values )
-// void glGetInteger64i_v ( GLenum target, GLuint index, GLint64 *data )
-// void glGetBufferParameteri64v ( GLenum target, GLenum pname, GLint64 *params )
+GLsync glFenceSync ( GLenum condition, GLbitfield flags )
+GLboolean glIsSync ( GLsync sync )
+void glDeleteSync ( GLsync sync )
+GLenum glClientWaitSync ( GLsync sync, GLbitfield flags, GLuint64 timeout )
+void glWaitSync ( GLsync sync, GLbitfield flags, GLuint64 timeout )
+void glGetInteger64v ( GLenum pname, GLint64 *params )
+void glGetSynciv ( GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, GLint *values )
+void glGetInteger64i_v ( GLenum target, GLuint index, GLint64 *data )
+void glGetBufferParameteri64v ( GLenum target, GLenum pname, GLint64 *params )
 void glGenSamplers ( GLsizei count, GLuint *samplers )
 void glDeleteSamplers ( GLsizei count, const GLuint *samplers )
 GLboolean glIsSampler ( GLuint sampler )
diff --git a/opengl/tools/glgen/src/JType.java b/opengl/tools/glgen/src/JType.java
index 795d833..b10e7e2 100644
--- a/opengl/tools/glgen/src/JType.java
+++ b/opengl/tools/glgen/src/JType.java
@@ -48,6 +48,8 @@
     typeMapping.put(new CType("char", true, true), new JType("String", false, false));
     typeMapping.put(new CType("GLchar", true, true), new JType("String", false, false));
     typeMapping.put(new CType("int"), new JType("int"));
+    typeMapping.put(new CType("GLuint64"), new JType("long"));
+    typeMapping.put(new CType("GLsync"), new JType("long"));
 
     // EGL primitive types
     typeMapping.put(new CType("EGLint"), new JType("int"));
@@ -103,6 +105,8 @@
             new JType("java.nio.IntBuffer", true, false));
     typeMapping.put(new CType("GLshort", true, true),
             new JType("java.nio.ShortBuffer", true, false));
+    typeMapping.put(new CType("GLint64", false, true),
+            new JType("java.nio.LongBuffer", true, false));
 
     // Typed pointers map to arrays + offsets
     arrayTypeMapping.put(new CType("char", false, true),
@@ -124,6 +128,7 @@
     arrayTypeMapping.put(new CType("GLuint", true, true), new JType("int", false, true));
     arrayTypeMapping.put(new CType("GLintptr"), new JType("int", false, true));
     arrayTypeMapping.put(new CType("GLsizeiptr"), new JType("int", false, true));
+    arrayTypeMapping.put(new CType("GLint64", false, true), new JType("long", false, true));
 
     //EGL typed pointers map to arrays + offsets
     arrayTypeMapping.put(new CType("EGLint", false, true), new JType("int", false, true));
diff --git a/opengl/tools/glgen/src/JniCodeEmitter.java b/opengl/tools/glgen/src/JniCodeEmitter.java
index ffe3767..ba1152a 100644
--- a/opengl/tools/glgen/src/JniCodeEmitter.java
+++ b/opengl/tools/glgen/src/JniCodeEmitter.java
@@ -1421,7 +1421,8 @@
                             "return toEGLHandle(_env, " + baseType + "Class, " +
                             baseType + "Constructor, _returnValue);");
             } else {
-                out.println(indent + "return _returnValue;");
+                out.println(indent + "return (" +
+                            getJniType(jfunc.getType()) + ")_returnValue;");
             }
         }