--- /dev/null	2017-03-07 11:44:12.271151064 +0100
+++ new/src/cpu/sparc/vm/gc/shared/cardTableModRefBSCodeGen_sparc.cpp	2017-04-25 16:46:02.487172145 +0200
@@ -0,0 +1,106 @@
+
+/*
+ * Copyright (c) 2016, 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.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "asm/macroAssembler.inline.hpp"
+#include "gc/shared/barrierSet.hpp"
+#include "gc/shared/cardTable.hpp"
+#include "gc/shared/cardTableModRefBS.hpp"
+#include "gc/shared/cardTableModRefBSCodeGen.hpp"
+#include "gc/shared/collectedHeap.hpp"
+#include "interpreter/interp_masm.hpp"
+
+#define __ masm->
+
+#ifdef PRODUCT
+#define BLOCK_COMMENT(str) /* nothing */
+#else
+#define BLOCK_COMMENT(str) __ block_comment(str)
+#endif
+
+#define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
+
+void CardTableModRefBSCodeGen::gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators, Register addr, Register count, Register tmp) {
+  CardTableModRefBS* ct = barrier_set_cast<CardTableModRefBS>(Universe::heap()->barrier_set());
+  assert(sizeof(*ct->card_table()->byte_map_base()) == sizeof(jbyte), "adjust this code");
+  assert_different_registers(addr, count, tmp);
+
+  Label L_loop;
+
+  __ sll_ptr(count, LogBytesPerHeapOop, count);
+  __ sub(count, BytesPerHeapOop, count);
+  __ add(count, addr, count);
+  // Use two shifts to clear out those low order two bits! (Cannot opt. into 1.)
+  __ srl_ptr(addr, CardTable::card_shift, addr);
+  __ srl_ptr(count, CardTable::card_shift, count);
+  __ sub(count, addr, count);
+  AddressLiteral rs((address)ct->card_table()->byte_map_base());
+  __ set(rs, tmp);
+  __ BIND(L_loop);
+  __ stb(G0, tmp, addr);
+  __ subcc(count, 1, count);
+  __ brx(Assembler::greaterEqual, false, Assembler::pt, L_loop);
+  __ delayed()->add(addr, 1, addr);
+}
+
+void CardTableModRefBSCodeGen::card_table_write(MacroAssembler* masm,
+                                                jbyte* byte_map_base,
+                                                Register tmp, Register obj) {
+#ifdef _LP64
+  __ srlx(obj, CardTable::card_shift, obj);
+#else
+  __ srl(obj, CardTable::card_shift, obj);
+#endif
+  assert(tmp != obj, "need separate temp reg");
+  __ set((address) byte_map_base, tmp);
+  __ stb(G0, tmp, obj);
+}
+
+void CardTableModRefBSCodeGen::card_write_barrier_post(MacroAssembler* masm, Register store_addr, Register new_val, Register tmp) {
+  // If we're writing constant NULL, we can skip the write barrier.
+  if (new_val == G0) return;
+  CardTableModRefBS* bs =
+    barrier_set_cast<CardTableModRefBS>(Universe::heap()->barrier_set());
+  card_table_write(masm, bs->card_table()->byte_map_base(), tmp, store_addr);
+}
+
+void CardTableModRefBSCodeGen::oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
+                                            Register base, Register index, int offset, Register val, Register tmp) {
+  bool on_array = (decorators & ACCESS_ON_ARRAY) != 0;
+  bool on_anonymous = (decorators & ACCESS_ON_ANONYMOUS) != 0;
+  bool precise = on_array || on_anonymous;
+  BarrierSetCodeGen::store_at(masm, decorators, type, base, index, offset, val, tmp);
+  // No need for post barrier if storing NULL
+  if (val != G0) {
+    if (precise) {
+      if (index == noreg) {
+        __ add(base, offset, base);
+      } else {
+        __ add(base, index, base);
+      }
+    }
+    card_write_barrier_post(masm, base, val, tmp);
+  }
+}