Mercurial > hg > graal-compiler

annotate src/share/vm/code/pcDesc.hpp @ 1552:c18cbe5936b8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
6941466: Oracle rebranding changes for Hotspot repositories Summary: Change all the Sun copyrights to Oracle copyright Reviewed-by: ohair
author trims
date Thu, 27 May 2010 19:08:38 -0700
parents f70b0d9ab095
children f95d63e2154a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
a61af66fc99e Initial load
duke
parents:
diff changeset
1 /*
1552
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1253
diff changeset
2 * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load
duke
parents:
diff changeset
4 *
a61af66fc99e Initial load
duke
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load
duke
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load
duke
parents:
diff changeset
7 * published by the Free Software Foundation.
a61af66fc99e Initial load
duke
parents:
diff changeset
8 *
a61af66fc99e Initial load
duke
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load
duke
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load
duke
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load
duke
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load
duke
parents:
diff changeset
13 * accompanied this code).
a61af66fc99e Initial load
duke
parents:
diff changeset
14 *
a61af66fc99e Initial load
duke
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load
duke
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load
duke
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load
duke
parents:
diff changeset
18 *
1552
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1253
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1253
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 1253
diff changeset
21 * questions.
0
a61af66fc99e Initial load
duke
parents:
diff changeset
22 *
a61af66fc99e Initial load
duke
parents:
diff changeset
23 */
a61af66fc99e Initial load
duke
parents:
diff changeset
24
a61af66fc99e Initial load
duke
parents:
diff changeset
25 // PcDescs map a physical PC (given as offset from start of nmethod) to
a61af66fc99e Initial load
duke
parents:
diff changeset
26 // the corresponding source scope and byte code index.
a61af66fc99e Initial load
duke
parents:
diff changeset
27
a61af66fc99e Initial load
duke
parents:
diff changeset
28 class nmethod;
a61af66fc99e Initial load
duke
parents:
diff changeset
29
a61af66fc99e Initial load
duke
parents:
diff changeset
30 class PcDesc VALUE_OBJ_CLASS_SPEC {
a61af66fc99e Initial load
duke
parents:
diff changeset
31 friend class VMStructs;
a61af66fc99e Initial load
duke
parents:
diff changeset
32 private:
a61af66fc99e Initial load
duke
parents:
diff changeset
33 int _pc_offset; // offset from start of nmethod
a61af66fc99e Initial load
duke
parents:
diff changeset
34 int _scope_decode_offset; // offset for scope in nmethod
a61af66fc99e Initial load
duke
parents:
diff changeset
35 int _obj_decode_offset;
a61af66fc99e Initial load
duke
parents:
diff changeset
36
931
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
37 union PcDescFlags {
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
38 int word;
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
39 struct {
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
40 unsigned int reexecute: 1;
1135
e66fd840cb6b 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 1014
diff changeset
41 unsigned int is_method_handle_invoke: 1;
1253
f70b0d9ab095 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 1135
diff changeset
42 unsigned int return_oop: 1;
931
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
43 } bits;
1014
8e954aedbb81 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 931
diff changeset
44 bool operator ==(const PcDescFlags& other) { return word == other.word; }
931
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
45 } _flags;
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
46
0
a61af66fc99e Initial load
duke
parents:
diff changeset
47 public:
a61af66fc99e Initial load
duke
parents:
diff changeset
48 int pc_offset() const { return _pc_offset; }
a61af66fc99e Initial load
duke
parents:
diff changeset
49 int scope_decode_offset() const { return _scope_decode_offset; }
a61af66fc99e Initial load
duke
parents:
diff changeset
50 int obj_decode_offset() const { return _obj_decode_offset; }
a61af66fc99e Initial load
duke
parents:
diff changeset
51
a61af66fc99e Initial load
duke
parents:
diff changeset
52 void set_pc_offset(int x) { _pc_offset = x; }
a61af66fc99e Initial load
duke
parents:
diff changeset
53 void set_scope_decode_offset(int x) { _scope_decode_offset = x; }
a61af66fc99e Initial load
duke
parents:
diff changeset
54 void set_obj_decode_offset(int x) { _obj_decode_offset = x; }
a61af66fc99e Initial load
duke
parents:
diff changeset
55
a61af66fc99e Initial load
duke
parents:
diff changeset
56 // Constructor (only used for static in nmethod.cpp)
a61af66fc99e Initial load
duke
parents:
diff changeset
57 // Also used by ScopeDesc::sender()]
a61af66fc99e Initial load
duke
parents:
diff changeset
58 PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset);
a61af66fc99e Initial load
duke
parents:
diff changeset
59
a61af66fc99e Initial load
duke
parents:
diff changeset
60 enum {
a61af66fc99e Initial load
duke
parents:
diff changeset
61 // upper and lower exclusive limits real offsets:
a61af66fc99e Initial load
duke
parents:
diff changeset
62 lower_offset_limit = -1,
a61af66fc99e Initial load
duke
parents:
diff changeset
63 upper_offset_limit = (unsigned int)-1 >> 1
a61af66fc99e Initial load
duke
parents:
diff changeset
64 };
a61af66fc99e Initial load
duke
parents:
diff changeset
65
931
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
66 // Flags
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
67 bool should_reexecute() const { return _flags.bits.reexecute; }
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
68 void set_should_reexecute(bool z) { _flags.bits.reexecute = z; }
72088be4b386 6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents: 0
diff changeset
69
1014
8e954aedbb81 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 931
diff changeset
70 // Does pd refer to the same information as pd?
8e954aedbb81 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 931
diff changeset
71 bool is_same_info(const PcDesc* pd) {
8e954aedbb81 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 931
diff changeset
72 return _scope_decode_offset == pd->_scope_decode_offset &&
8e954aedbb81 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 931
diff changeset
73 _obj_decode_offset == pd->_obj_decode_offset &&
8e954aedbb81 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 931
diff changeset
74 _flags == pd->_flags;
8e954aedbb81 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 931
diff changeset
75 }
8e954aedbb81 6889869: assert(!Interpreter::bytecode_should_reexecute(code),"should not reexecute")
never
parents: 931
diff changeset
76
1135
e66fd840cb6b 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 1014
diff changeset
77 bool is_method_handle_invoke() const { return _flags.bits.is_method_handle_invoke; }
e66fd840cb6b 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 1014
diff changeset
78 void set_is_method_handle_invoke(bool z) { _flags.bits.is_method_handle_invoke = z; }
e66fd840cb6b 6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents: 1014
diff changeset
79
1253
f70b0d9ab095 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 1135
diff changeset
80 bool return_oop() const { return _flags.bits.return_oop; }
f70b0d9ab095 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 1135
diff changeset
81 void set_return_oop(bool z) { _flags.bits.return_oop = z; }
f70b0d9ab095 6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents: 1135
diff changeset
82
0
a61af66fc99e Initial load
duke
parents:
diff changeset
83 // Returns the real pc
a61af66fc99e Initial load
duke
parents:
diff changeset
84 address real_pc(const nmethod* code) const;
a61af66fc99e Initial load
duke
parents:
diff changeset
85
a61af66fc99e Initial load
duke
parents:
diff changeset
86 void print(nmethod* code);
a61af66fc99e Initial load
duke
parents:
diff changeset
87 bool verify(nmethod* code);
a61af66fc99e Initial load
duke
parents:
diff changeset
88 };