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comparison src/os_cpu/linux_ppc/vm/thread_linux_ppc.hpp @ 14408:ec28f9c041ff

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8019972: PPC64 (part 9): platform files for interpreter only VM. Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs. Reviewed-by: kvn
author goetz
date Fri, 02 Aug 2013 16:46:45 +0200
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14407:94c202aa2646 14408:ec28f9c041ff
1 /*
2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2013 SAP AG. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef OS_CPU_LINUX_PPC_VM_THREAD_LINUX_PPC_HPP
27 #define OS_CPU_LINUX_PPC_VM_THREAD_LINUX_PPC_HPP
28
29 private:
30
31 void pd_initialize() {
32 _anchor.clear();
33 _last_interpreter_fp = NULL;
34 }
35
36 // The `last' frame is the youngest Java frame on the thread's stack.
37 frame pd_last_frame() {
38 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
39
40 intptr_t* sp = last_Java_sp();
41 address pc = _anchor.last_Java_pc();
42
43 // Last_Java_pc ist not set, if we come here from compiled code.
44 if (pc == NULL) {
45 pc = (address) *(sp + 2);
46 }
47
48 return frame(sp, pc);
49 }
50
51 public:
52
53 void set_base_of_stack_pointer(intptr_t* base_sp) {}
54 intptr_t* base_of_stack_pointer() { return NULL; }
55 void record_base_of_stack_pointer() {}
56
57 // These routines are only used on cpu architectures that
58 // have separate register stacks (Itanium).
59 static bool register_stack_overflow() { return false; }
60 static void enable_register_stack_guard() {}
61 static void disable_register_stack_guard() {}
62
63 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava);
64
65 protected:
66
67 // -Xprof support
68 //
69 // In order to find the last Java fp from an async profile
70 // tick, we store the current interpreter fp in the thread.
71 // This value is only valid while we are in the C++ interpreter
72 // and profiling.
73 intptr_t *_last_interpreter_fp;
74
75 public:
76
77 static ByteSize last_interpreter_fp_offset() {
78 return byte_offset_of(JavaThread, _last_interpreter_fp);
79 }
80
81 intptr_t* last_interpreter_fp() { return _last_interpreter_fp; }
82
83 #endif // OS_CPU_LINUX_PPC_VM_THREAD_LINUX_PPC_HPP