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+/*
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2013 SAP AG. 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.
+ *
+ */
+
+#ifndef OS_CPU_LINUX_PPC_VM_THREAD_LINUX_PPC_HPP
+#define OS_CPU_LINUX_PPC_VM_THREAD_LINUX_PPC_HPP
+
+ private:
+
+ void pd_initialize() {
+ _anchor.clear();
+ _last_interpreter_fp = NULL;
+ }
+
+ // The `last' frame is the youngest Java frame on the thread's stack.
+ frame pd_last_frame() {
+ assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
+
+ intptr_t* sp = last_Java_sp();
+ address pc = _anchor.last_Java_pc();
+
+ // Last_Java_pc ist not set, if we come here from compiled code.
+ if (pc == NULL) {
+ pc = (address) *(sp + 2);
+ }
+
+ return frame(sp, pc);
+ }
+
+ public:
+
+ void set_base_of_stack_pointer(intptr_t* base_sp) {}
+ intptr_t* base_of_stack_pointer() { return NULL; }
+ void record_base_of_stack_pointer() {}
+
+ // These routines are only used on cpu architectures that
+ // have separate register stacks (Itanium).
+ static bool register_stack_overflow() { return false; }
+ static void enable_register_stack_guard() {}
+ static void disable_register_stack_guard() {}
+
+ bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava);
+
+ protected:
+
+ // -Xprof support
+ //
+ // In order to find the last Java fp from an async profile
+ // tick, we store the current interpreter fp in the thread.
+ // This value is only valid while we are in the C++ interpreter
+ // and profiling.
+ intptr_t *_last_interpreter_fp;
+
+ public:
+
+ static ByteSize last_interpreter_fp_offset() {
+ return byte_offset_of(JavaThread, _last_interpreter_fp);
+ }
+
+ intptr_t* last_interpreter_fp() { return _last_interpreter_fp; }
+
+#endif // OS_CPU_LINUX_PPC_VM_THREAD_LINUX_PPC_HPP