Thu, 07 Sep 2017 09:12:16 +0800
#5745 [Code Reorganization] code cleanup and code style fix
This is a huge patch, but only code cleanup, code style fix and useless code deletion are included, for example:
tab -> two spaces, deleted spacees at the end of a line, delete useless comments.
This patch also included:
Declaration and definition of class MacroAssembler is moved from assembler_mips.h/cpp to macroAssembler_mips.h/cpp
1 /*
2 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2015, 2016, Loongson Technology. 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 */
26 #ifndef CPU_MIPS_VM_JAVAFRAMEANCHOR_MIPS_HPP
27 #define CPU_MIPS_VM_JAVAFRAMEANCHOR_MIPS_HPP
29 private:
31 // FP value associated with _last_Java_sp:
32 intptr_t* volatile _last_Java_fp; // pointer is volatile not what it points to
34 public:
35 // Each arch must define reset, save, restore
36 // These are used by objects that only care about:
37 // 1 - initializing a new state (thread creation, javaCalls)
38 // 2 - saving a current state (javaCalls)
39 // 3 - restoring an old state (javaCalls)
41 void clear(void) {
42 // clearing _last_Java_sp must be first
43 _last_Java_sp = NULL;
44 // fence?
45 _last_Java_fp = NULL;
46 _last_Java_pc = NULL;
47 }
49 void copy(JavaFrameAnchor* src) {
50 // In order to make sure the transition state is valid for "this"
51 // We must clear _last_Java_sp before copying the rest of the new data
52 //
53 // Hack Alert: Temporary bugfix for 4717480/4721647
54 // To act like previous version (pd_cache_state) don't NULL _last_Java_sp
55 // unless the value is changing
56 //
57 if (_last_Java_sp != src->_last_Java_sp)
58 _last_Java_sp = NULL;
60 _last_Java_fp = src->_last_Java_fp;
61 _last_Java_pc = src->_last_Java_pc;
62 // Must be last so profiler will always see valid frame if has_last_frame() is true
63 _last_Java_sp = src->_last_Java_sp;
64 }
66 // Always walkable
67 bool walkable(void) { return true; }
68 // Never any thing to do since we are always walkable and can find address of return addresses
69 void make_walkable(JavaThread* thread) { }
71 intptr_t* last_Java_sp(void) const { return _last_Java_sp; }
73 address last_Java_pc(void) { return _last_Java_pc; }
75 private:
77 static ByteSize last_Java_fp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_fp); }
79 public:
81 void set_last_Java_sp(intptr_t* sp) { _last_Java_sp = sp; }
83 intptr_t* last_Java_fp(void) { return _last_Java_fp; }
84 // Assert (last_Java_sp == NULL || fp == NULL)
85 void set_last_Java_fp(intptr_t* fp) { _last_Java_fp = fp; }
87 #endif // CPU_MIPS_VM_JAVAFRAMEANCHOR_MIPS_HPP