8044538: assert(which != imm_operand) failed: instruction is not a movq reg, imm64

Fixed internal_word_Relocation::target() to not retrieve target address from code if relocation points into the constant section. Added test.

Reviewed-by: kvn, twisti, dlong

hotspot/src/share/vm/code/relocInfo.cpp

@@ -877,11 +877,7 @@ address external_word_Relocation::target() {
 void internal_word_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
   address target = _target;
   if (target == NULL) {
-    if (addr_in_const()) {
+    target = new_addr_for(this->target(), src, dest);
-      target = new_addr_for(*(address*)addr(), src, dest);
-    } else {
-      target = new_addr_for(pd_get_address_from_code(), src, dest);
-    }
   }
   set_value(target);
 }
@@ -890,7 +886,11 @@ void internal_word_Relocation::fix_relocation_after_move(const CodeBuffer* src,
 address internal_word_Relocation::target() {
   address target = _target;
   if (target == NULL) {
-    target = pd_get_address_from_code();
+    if (addr_in_const()) {
+      target = *(address*)addr();
+    } else {
+      target = pd_get_address_from_code();
+    }
   }
   return target;
 }

hotspot/test/compiler/relocations/TestPrintRelocations.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8044538
+ * @summary assert hit while printing relocations for jump table entries
+ * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -Xcomp -XX:+PrintRelocations TestPrintRelocations
+ */
+
+/**
+ * The test compiles all methods (-Xcomp) and prints their relocation
+ * entries (-XX:+PrintRelocations) to make sure the printing works.
+ */
+public class TestPrintRelocations {
+
+   static public void main(String[] args) { }
+}