1 /*
 2  * Copyright (c) 2003, 2020, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
 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
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25 
26 #ifndef CPU_ZERO_FRAME_ZERO_HPP
27 #define CPU_ZERO_FRAME_ZERO_HPP
28 
29 // A frame represents a physical stack frame on the Zero stack.
30 
31  public:
32   enum {
33     pc_return_offset = 0
34   };
35 
36   // Constructor
37  public:
38   frame(ZeroFrame* zeroframe, intptr_t* sp);
39 
40  private:
41   ZeroFrame* _zeroframe;
42 
43  public:
44   const ZeroFrame *zeroframe() const {
45     return _zeroframe;
46   }
47 
48   intptr_t* fp() const {
49     return (intptr_t *) zeroframe();
50   }
51 
52   inline interpreterState get_interpreterState() const;
53 
54  public:
55   const EntryFrame *zero_entryframe() const {
56     return zeroframe()->as_entry_frame();
57   }
58   const InterpreterFrame *zero_interpreterframe() const {
59     return zeroframe()->as_interpreter_frame();
60   }
61 
62  public:
63   bool is_fake_stub_frame() const;
64 
65  public:
66   frame sender_for_nonentry_frame(RegisterMap* map) const;
67 
68  public:
69   void zero_print_on_error(int           index,
70                            outputStream* st,
71                            char*         buf,
72                            int           buflen) const;
73 
74   static jint interpreter_frame_expression_stack_direction() { return -1; }
75 
76 #endif // CPU_ZERO_FRAME_ZERO_HPP