Thu, 19 Mar 2009 09:13:24 -0700
Merge
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2005 Sun Microsystems, Inc. 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 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any 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); |
duke@435 | 106 | |
duke@435 | 107 | static int vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS); |
duke@435 | 108 | |
duke@435 | 109 | static void resolve_klass (KlassHandle& result, constantPoolHandle pool, int index, TRAPS); |
duke@435 | 110 | static void resolve_klass_no_update (KlassHandle& result, constantPoolHandle pool, int index, TRAPS); // no update of constantPool entry |
duke@435 | 111 | |
duke@435 | 112 | static void resolve_pool (KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature, KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS); |
duke@435 | 113 | |
duke@435 | 114 | 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 | 115 | 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 | 116 | |
duke@435 | 117 | 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 | 118 | 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 | 119 | 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 | 120 | 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 | 121 | |
duke@435 | 122 | static void runtime_resolve_special_method (CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, KlassHandle current_klass, bool check_access, TRAPS); |
duke@435 | 123 | 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 | 124 | 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 | 125 | |
duke@435 | 126 | static void check_field_accessability (KlassHandle ref_klass, KlassHandle resolved_klass, KlassHandle sel_klass, fieldDescriptor& fd, TRAPS); |
duke@435 | 127 | static void check_method_accessability (KlassHandle ref_klass, KlassHandle resolved_klass, KlassHandle sel_klass, methodHandle sel_method, TRAPS); |
duke@435 | 128 | |
duke@435 | 129 | public: |
duke@435 | 130 | // constant pool resolving |
duke@435 | 131 | static void check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS); |
duke@435 | 132 | |
duke@435 | 133 | // static resolving for all calls except interface calls |
duke@435 | 134 | static void resolve_method (methodHandle& method_result, KlassHandle& klass_result, constantPoolHandle pool, int index, TRAPS); |
duke@435 | 135 | static void resolve_interface_method(methodHandle& method_result, KlassHandle& klass_result, constantPoolHandle pool, int index, TRAPS); |
duke@435 | 136 | |
duke@435 | 137 | // runtime/static resolving for fields |
duke@435 | 138 | static void resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS); |
duke@435 | 139 | // takes an extra bool argument "update_pool" to decide whether to update the constantPool during klass resolution. |
duke@435 | 140 | static void resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS); |
duke@435 | 141 | |
duke@435 | 142 | // runtime resolving: |
duke@435 | 143 | // resolved_klass = specified class (i.e., static receiver class) |
duke@435 | 144 | // current_klass = sending method holder (i.e., class containing the method containing the call being resolved) |
duke@435 | 145 | 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 | 146 | 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 | 147 | 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 | 148 | 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 | 149 | |
duke@435 | 150 | // same as above for compile-time resolution; but returns null handle instead of throwing an exception on error |
duke@435 | 151 | // also, does not initialize klass (i.e., no side effects) |
duke@435 | 152 | static methodHandle resolve_virtual_call_or_null (KlassHandle receiver_klass, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass); |
duke@435 | 153 | static methodHandle resolve_interface_call_or_null(KlassHandle receiver_klass, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass); |
duke@435 | 154 | static methodHandle resolve_static_call_or_null (KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass); |
duke@435 | 155 | static methodHandle resolve_special_call_or_null (KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass); |
duke@435 | 156 | |
duke@435 | 157 | // same as above for compile-time resolution; returns vtable_index if current_klass if linked |
duke@435 | 158 | static int resolve_virtual_vtable_index (KlassHandle receiver_klass, KlassHandle resolved_klass, symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass); |
duke@435 | 159 | |
duke@435 | 160 | // static resolving for compiler (does not throw exceptions, returns null handle if unsuccessful) |
duke@435 | 161 | 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 | 162 | 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 | 163 | |
duke@435 | 164 | // runtime resolving from constant pool |
duke@435 | 165 | static void resolve_invokestatic (CallInfo& result, constantPoolHandle pool, int index, TRAPS); |
duke@435 | 166 | static void resolve_invokespecial (CallInfo& result, constantPoolHandle pool, int index, TRAPS); |
duke@435 | 167 | static void resolve_invokevirtual (CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS); |
duke@435 | 168 | static void resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS); |
duke@435 | 169 | |
duke@435 | 170 | static void resolve_invoke (CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS); |
duke@435 | 171 | }; |