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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
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