From fa6b5a8027b86d2f8a200e72b4ef6a0d3f9189d3 Mon Sep 17 00:00:00 2001
From: duke <none@none>
Date: Sat, 1 Dec 2007 00:00:00 +0000
Subject: Initial load

---
 src/cpu/sparc/vm/stubRoutines_sparc.hpp | 97 +++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 src/cpu/sparc/vm/stubRoutines_sparc.hpp

(limited to 'src/cpu/sparc/vm/stubRoutines_sparc.hpp')

diff --git a/src/cpu/sparc/vm/stubRoutines_sparc.hpp b/src/cpu/sparc/vm/stubRoutines_sparc.hpp
new file mode 100644
index 000000000..6b23258ff
--- /dev/null
+++ b/src/cpu/sparc/vm/stubRoutines_sparc.hpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// This file holds the platform specific parts of the StubRoutines
+// definition. See stubRoutines.hpp for a description on how to
+// extend it.
+
+
+// So unfortunately c2 will call with a pc from a frame object
+// (already adjusted) and a raw pc (unadjusted), so we need to check both.
+// It didn't use to be like this before adapter removal.
+static bool returns_to_call_stub(address return_pc)   {
+  return ((return_pc + frame::pc_return_offset) == _call_stub_return_address) ||
+          (return_pc == _call_stub_return_address );
+}
+
+enum /* platform_dependent_constants */ {
+  // %%%%%%%% May be able to shrink this a lot
+  code_size1 = 20000,                                        // simply increase if too small (assembler will crash if too small)
+  code_size2 = 20000                                         // simply increase if too small (assembler will crash if too small)
+};
+
+class Sparc {
+ friend class StubGenerator;
+
+ public:
+  enum { nof_instance_allocators = 10 };
+
+  // allocator lock values
+  enum {
+    unlocked = 0,
+    locked   = 1
+  };
+
+  enum {
+    v8_oop_lock_ignore_bits = 2,
+    v8_oop_lock_bits = 4,
+    nof_v8_oop_lock_cache_entries = 1 << (v8_oop_lock_bits+v8_oop_lock_ignore_bits),
+    v8_oop_lock_mask = right_n_bits(v8_oop_lock_bits),
+    v8_oop_lock_mask_in_place = v8_oop_lock_mask << v8_oop_lock_ignore_bits
+  };
+
+  static int _v8_oop_lock_cache[nof_v8_oop_lock_cache_entries];
+
+ private:
+  static address _test_stop_entry;
+  static address _stop_subroutine_entry;
+  static address _flush_callers_register_windows_entry;
+
+  static int _atomic_memory_operation_lock;
+
+  static address _partial_subtype_check;
+
+ public:
+  // %%% global lock for everyone who needs to use atomic_compare_and_exchange
+  // %%% or atomic_increment -- should probably use more locks for more
+  // %%% scalability-- for instance one for each eden space or group of
+
+  // address of the lock for atomic_compare_and_exchange
+  static int* atomic_memory_operation_lock_addr() { return &_atomic_memory_operation_lock; }
+
+  // accessor and mutator for _atomic_memory_operation_lock
+  static int atomic_memory_operation_lock() { return _atomic_memory_operation_lock; }
+  static void set_atomic_memory_operation_lock(int value) { _atomic_memory_operation_lock = value; }
+
+  // test assembler stop routine by setting registers
+  static void (*test_stop_entry()) ()                     { return CAST_TO_FN_PTR(void (*)(void), _test_stop_entry); }
+
+  // a subroutine for debugging assembler code
+  static address stop_subroutine_entry_address()          { return (address)&_stop_subroutine_entry; }
+
+  // flushes (all but current) register window
+  static intptr_t* (*flush_callers_register_windows_func())() { return CAST_TO_FN_PTR(intptr_t* (*)(void), _flush_callers_register_windows_entry); }
+
+  static address partial_subtype_check()                  { return _partial_subtype_check; }
+};
-- 
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