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  const ImmutableOopMap* get_oop_map() const;
37 
38   // Constructor
39  public:
40   frame(ZeroFrame* zeroframe, intptr_t* sp);
41 
42  private:
43   ZeroFrame* _zeroframe;
44 
45  public:
46   const ZeroFrame *zeroframe() const {
47     return _zeroframe;
48   }
49 
50   intptr_t* fp() const {
51     return (intptr_t *) zeroframe();
52   }
53 
54   inline interpreterState get_interpreterState() const;
55 
56  public:
57   const EntryFrame *zero_entryframe() const {
58     return zeroframe()->as_entry_frame();
59   }
60   const InterpreterFrame *zero_interpreterframe() const {
61     return zeroframe()->as_interpreter_frame();
62   }
63 
64  public:
65   bool is_fake_stub_frame() const;
66 
67  public:
68   frame sender_for_nonentry_frame(RegisterMap* map) const;
69 
70  public:
71   void zero_print_on_error(int           index,
72                            outputStream* st,
73                            char*         buf,
74                            int           buflen) const;
75 
76   static jint interpreter_frame_expression_stack_direction() { return -1; }
77 
78   inline address* sender_pc_addr() const;
79 
80   template <bool relative = false>
81   inline intptr_t* interpreter_frame_last_sp() const;
82 
83   template <typename RegisterMapT>
84   static void update_map_with_saved_link(RegisterMapT* map, intptr_t** link_addr);
85 
86 #endif // CPU_ZERO_FRAME_ZERO_HPP