1 /*
2 * Copyright (c) 2002, 2005, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 private:
26 volatile int _flags;
27
28 public:
29
30 enum pd_Constants {
31 flushed = 1 // winodows have flushed
32 };
33
34 int flags(void) { return _flags; }
35 void set_flags(int flags) { _flags = flags; }
36
37 static ByteSize flags_offset() { return byte_offset_of(JavaFrameAnchor, _flags); }
38
39 // Each arch must define clear, copy
40 // These are used by objects that only care about:
41 // 1 - initializing a new state (thread creation, javaCalls)
42 // 2 - saving a current state (javaCalls)
43 // 3 - restoring an old state (javaCalls)
44
80
81 // These are only used by friends
82 private:
83
84 intptr_t* last_Java_sp() const {
85 // _last_Java_sp will always be a an unbiased stack pointer
86 // if is is biased then some setter screwed up. This is
87 // deadly.
88 #ifdef _LP64
89 assert(((intptr_t)_last_Java_sp & 0xF) == 0, "Biased last_Java_sp");
90 #endif
91 return _last_Java_sp;
92 }
93
94 void capture_last_Java_pc(intptr_t* sp);
95
96 void set_window_flushed( void) {
97 _flags |= flushed;
98 OrderAccess::fence();
99 }
|
1 /*
2 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef CPU_SPARC_VM_JAVAFRAMEANCHOR_SPARC_HPP
26 #define CPU_SPARC_VM_JAVAFRAMEANCHOR_SPARC_HPP
27
28 private:
29 volatile int _flags;
30
31 public:
32
33 enum pd_Constants {
34 flushed = 1 // winodows have flushed
35 };
36
37 int flags(void) { return _flags; }
38 void set_flags(int flags) { _flags = flags; }
39
40 static ByteSize flags_offset() { return byte_offset_of(JavaFrameAnchor, _flags); }
41
42 // Each arch must define clear, copy
43 // These are used by objects that only care about:
44 // 1 - initializing a new state (thread creation, javaCalls)
45 // 2 - saving a current state (javaCalls)
46 // 3 - restoring an old state (javaCalls)
47
83
84 // These are only used by friends
85 private:
86
87 intptr_t* last_Java_sp() const {
88 // _last_Java_sp will always be a an unbiased stack pointer
89 // if is is biased then some setter screwed up. This is
90 // deadly.
91 #ifdef _LP64
92 assert(((intptr_t)_last_Java_sp & 0xF) == 0, "Biased last_Java_sp");
93 #endif
94 return _last_Java_sp;
95 }
96
97 void capture_last_Java_pc(intptr_t* sp);
98
99 void set_window_flushed( void) {
100 _flags |= flushed;
101 OrderAccess::fence();
102 }
103
104 #endif // CPU_SPARC_VM_JAVAFRAMEANCHOR_SPARC_HPP
|