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src/share/vm/interpreter/linkResolver.hpp@c18cbe5936b8 (annotated)

src/share/vm/interpreter/linkResolver.hpp

Thu, 27 May 2010 19:08:38 -0700

author
trims
date
Thu, 27 May 2010 19:08:38 -0700
changeset 1907
c18cbe5936b8
parent 1863
2ffde6cfe049
child 2015
083fde3b838e
permissions
-rw-r--r--

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

duke@435 1 /*
trims@1907 2 * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved.
duke@435 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435 4 *
duke@435 5 * This code is free software; you can redistribute it and/or modify it
duke@435 6 * under the terms of the GNU General Public License version 2 only, as
duke@435 7 * published by the Free Software Foundation.
duke@435 8 *
duke@435 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@435 13 * accompanied this code).
duke@435 14 *
duke@435 15 * You should have received a copy of the GNU General Public License version
duke@435 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@435 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435 18 *
trims@1907 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907 20 * or visit www.oracle.com if you need additional information or have any
trims@1907 21 * questions.
duke@435 22 *
duke@435 23 */
duke@435 24
duke@435 25 // All the necessary definitions for run-time link resolution.
duke@435 26
duke@435 27 // LinkInfo & its subclasses provide all the information gathered
duke@435 28 // for a particular link after resolving it. A link is any reference
duke@435 29 // made from within the bytecodes of a method to an object outside of
duke@435 30 // that method. If the info is invalid, the link has not been resolved
duke@435 31 // successfully.
duke@435 32
duke@435 33 class LinkInfo VALUE_OBJ_CLASS_SPEC {
duke@435 34 };
duke@435 35
duke@435 36
duke@435 37 // Link information for getfield/putfield & getstatic/putstatic bytecodes.
duke@435 38
duke@435 39 class FieldAccessInfo: public LinkInfo {
duke@435 40 protected:
duke@435 41 KlassHandle _klass;
duke@435 42 symbolHandle _name;
duke@435 43 AccessFlags _access_flags;
duke@435 44 int _field_index; // original index in the klass
duke@435 45 int _field_offset;
duke@435 46 BasicType _field_type;
duke@435 47
duke@435 48 public:
duke@435 49 void set(KlassHandle klass, symbolHandle name, int field_index, int field_offset,
duke@435 50 BasicType field_type, AccessFlags access_flags);
duke@435 51 KlassHandle klass() const { return _klass; }
duke@435 52 symbolHandle name() const { return _name; }
duke@435 53 int field_index() const { return _field_index; }
duke@435 54 int field_offset() const { return _field_offset; }
duke@435 55 BasicType field_type() const { return _field_type; }
duke@435 56 AccessFlags access_flags() const { return _access_flags; }
duke@435 57
duke@435 58 // debugging
duke@435 59 void print() PRODUCT_RETURN;
duke@435 60 };
duke@435 61
duke@435 62
duke@435 63 // Link information for all calls.
duke@435 64
duke@435 65 class CallInfo: public LinkInfo {
duke@435 66 private:
duke@435 67 KlassHandle _resolved_klass; // static receiver klass
duke@435 68 KlassHandle _selected_klass; // dynamic receiver class (same as static, or subklass)
duke@435 69 methodHandle _resolved_method; // static target method
duke@435 70 methodHandle _selected_method; // dynamic (actual) target method
duke@435 71 int _vtable_index; // vtable index of selected method
duke@435 72
duke@435 73 void set_static( KlassHandle resolved_klass, methodHandle resolved_method , TRAPS);
duke@435 74 void set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method , TRAPS);
duke@435 75 void set_virtual( KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS);
duke@435 76 void set_common( KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS);
duke@435 77
duke@435 78 friend class LinkResolver;
duke@435 79
duke@435 80 public:
duke@435 81 KlassHandle resolved_klass() const { return _resolved_klass; }
duke@435 82 KlassHandle selected_klass() const { return _selected_klass; }
duke@435 83 methodHandle resolved_method() const { return _resolved_method; }
duke@435 84 methodHandle selected_method() const { return _selected_method; }
duke@435 85
duke@435 86 BasicType result_type() const { return selected_method()->result_type(); }
duke@435 87 bool has_vtable_index() const { return _vtable_index >= 0; }
duke@435 88 bool is_statically_bound() const { return _vtable_index == methodOopDesc::nonvirtual_vtable_index; }
duke@435 89 int vtable_index() const {
duke@435 90 // Even for interface calls the vtable index could be non-negative.
duke@435 91 // See CallInfo::set_interface.
duke@435 92 assert(has_vtable_index() || is_statically_bound(), "");
duke@435 93 return _vtable_index;
duke@435 94 }
duke@435 95 };
duke@435 96
duke@435 97
duke@435 98 // The LinkResolver is used to resolve constant-pool references at run-time.
duke@435 99 // It does all necessary link-time checks & throws exceptions if necessary.
duke@435 100
duke@435 101 class LinkResolver: AllStatic {
duke@435 102 private:
duke@435 103 static void lookup_method_in_klasses (methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS);
duke@435 104 static void lookup_instance_method_in_klasses (methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS);
duke@435 105 static void lookup_method_in_interfaces (methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS);
jrose@1863 106 static void lookup_implicit_method (methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature,
jrose@1863 107 KlassHandle current_klass, TRAPS);
duke@435 108
duke@435 109 static int vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS);
duke@435 110
duke@435 111 static void resolve_klass (KlassHandle& result, constantPoolHandle pool, int index, TRAPS);
duke@435 112 static void resolve_klass_no_update (KlassHandle& result, constantPoolHandle pool, int index, TRAPS); // no update of constantPool entry
duke@435 113
duke@435 114 static void resolve_pool (KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature, KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS);
duke@435 115
duke@435 116 static void resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS);
duke@435 117 static void resolve_method (methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS);
duke@435 118
duke@435 119 static void linktime_resolve_static_method (methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS);
duke@435 120 static void linktime_resolve_special_method (methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS);
duke@435 121 static void linktime_resolve_virtual_method (methodHandle &resolved_method, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature,KlassHandle current_klass, bool check_access, TRAPS);
duke@435 122 static void linktime_resolve_interface_method (methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS);
duke@435 123
duke@435 124 static void runtime_resolve_special_method (CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, KlassHandle current_klass, bool check_access, TRAPS);
duke@435 125 static void runtime_resolve_virtual_method (CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS);
duke@435 126 static void runtime_resolve_interface_method (CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS);
duke@435 127
duke@435 128 static void check_field_accessability (KlassHandle ref_klass, KlassHandle resolved_klass, KlassHandle sel_klass, fieldDescriptor& fd, TRAPS);
duke@435 129 static void check_method_accessability (KlassHandle ref_klass, KlassHandle resolved_klass, KlassHandle sel_klass, methodHandle sel_method, TRAPS);
duke@435 130
duke@435 131 public:
duke@435 132 // constant pool resolving
duke@435 133 static void check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS);
duke@435 134
duke@435 135 // static resolving for all calls except interface calls
duke@435 136 static void resolve_method (methodHandle& method_result, KlassHandle& klass_result, constantPoolHandle pool, int index, TRAPS);
twisti@1570 137 static void resolve_dynamic_method (methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS);
duke@435 138 static void resolve_interface_method(methodHandle& method_result, KlassHandle& klass_result, constantPoolHandle pool, int index, TRAPS);
duke@435 139
duke@435 140 // runtime/static resolving for fields
duke@435 141 static void resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS);
duke@435 142 // takes an extra bool argument "update_pool" to decide whether to update the constantPool during klass resolution.
duke@435 143 static void resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS);
duke@435 144
duke@435 145 // runtime resolving:
duke@435 146 // resolved_klass = specified class (i.e., static receiver class)
duke@435 147 // current_klass = sending method holder (i.e., class containing the method containing the call being resolved)
duke@435 148 static void resolve_static_call (CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access, bool initialize_klass, TRAPS);
duke@435 149 static void resolve_special_call (CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS);
duke@435 150 static void resolve_virtual_call (CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access, bool check_null_and_abstract, TRAPS);
duke@435 151 static void resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access, bool check_null_and_abstract, TRAPS);
duke@435 152
duke@435 153 // same as above for compile-time resolution; but returns null handle instead of throwing an exception on error
duke@435 154 // also, does not initialize klass (i.e., no side effects)
duke@435 155 static methodHandle resolve_virtual_call_or_null (KlassHandle receiver_klass, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass);
duke@435 156 static methodHandle resolve_interface_call_or_null(KlassHandle receiver_klass, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass);
duke@435 157 static methodHandle resolve_static_call_or_null (KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass);
duke@435 158 static methodHandle resolve_special_call_or_null (KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass);
duke@435 159
duke@435 160 // same as above for compile-time resolution; returns vtable_index if current_klass if linked
duke@435 161 static int resolve_virtual_vtable_index (KlassHandle receiver_klass, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass);
duke@435 162
duke@435 163 // static resolving for compiler (does not throw exceptions, returns null handle if unsuccessful)
duke@435 164 static methodHandle linktime_resolve_virtual_method_or_null (KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access);
duke@435 165 static methodHandle linktime_resolve_interface_method_or_null(KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, bool check_access);
duke@435 166
duke@435 167 // runtime resolving from constant pool
duke@435 168 static void resolve_invokestatic (CallInfo& result, constantPoolHandle pool, int index, TRAPS);
duke@435 169 static void resolve_invokespecial (CallInfo& result, constantPoolHandle pool, int index, TRAPS);
duke@435 170 static void resolve_invokevirtual (CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS);
duke@435 171 static void resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS);
jrose@1161 172 static void resolve_invokedynamic (CallInfo& result, constantPoolHandle pool, int index, TRAPS);
duke@435 173
duke@435 174 static void resolve_invoke (CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS);
duke@435 175 };

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