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src/hotspot/share/interpreter/linkResolver.hpp

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rev 52749 : Bootstrap method consolidation
* clean up and simplify JDK support code for BSM invocation
* simplify JVM bootstrap handshake: use BootstrapCallInfo only
* remove unused JVM paths and data fields
* move bootstrap argument processing from MethodHandleNatives to ConstantPool
* remove ConstantGroup; merge argument access into BootstrapCallInfo
* adjust BSM argument access: remove copyArguments, add argumentRef API
* add metadata-free BSM modes, including symbolic arguments from CP


  38 class CallInfo : public StackObj {
  39  public:
  40   // Ways that a method call might be selected (or not) based on receiver type.
  41   // Note that an invokevirtual instruction might be linked with no_dispatch,
  42   // and an invokeinterface instruction might be linked with any of the three options
  43   enum CallKind {
  44     direct_call,                        // jump into resolved_method (must be concrete)
  45     vtable_call,                        // select recv.klass.method_at_vtable(index)
  46     itable_call,                        // select recv.klass.method_at_itable(resolved_method.holder, index)
  47     unknown_kind = -1
  48   };
  49  private:
  50   Klass*       _resolved_klass;         // static receiver klass, resolved from a symbolic reference
  51   Klass*       _selected_klass;         // dynamic receiver class (same as static, or subklass)
  52   methodHandle _resolved_method;        // static target method
  53   methodHandle _selected_method;        // dynamic (actual) target method
  54   CallKind     _call_kind;              // kind of call (static(=bytecode static/special +
  55                                         //               others inferred), vtable, itable)
  56   int          _call_index;             // vtable or itable index of selected class method (if any)
  57   Handle       _resolved_appendix;      // extra argument in constant pool (if CPCE::has_appendix)
  58   Handle       _resolved_method_type;   // MethodType (for invokedynamic and invokehandle call sites)
  59   Handle       _resolved_method_name;   // Object holding the ResolvedMethodName
  60 
  61   void set_static(Klass* resolved_klass, const methodHandle& resolved_method, TRAPS);
  62   void set_interface(Klass* resolved_klass, Klass* selected_klass,
  63                      const methodHandle& resolved_method,
  64                      const methodHandle& selected_method,
  65                      int itable_index, TRAPS);
  66   void set_virtual(Klass* resolved_klass, Klass* selected_klass,
  67                    const methodHandle& resolved_method,
  68                    const methodHandle& selected_method,
  69                    int vtable_index, TRAPS);
  70   void set_handle(const methodHandle& resolved_method,
  71                   Handle resolved_appendix, Handle resolved_method_type, TRAPS);
  72   void set_handle(Klass* resolved_klass,
  73                   const methodHandle& resolved_method,
  74                   Handle resolved_appendix, Handle resolved_method_type, TRAPS);
  75   void set_common(Klass* resolved_klass, Klass* selected_klass,
  76                   const methodHandle& resolved_method,
  77                   const methodHandle& selected_method,
  78                   CallKind kind,
  79                   int index, TRAPS);
  80 
  81   friend class LinkResolver;

  82 
  83  public:
  84   CallInfo() {
  85 #ifndef PRODUCT
  86     _call_kind  = CallInfo::unknown_kind;
  87     _call_index = Method::garbage_vtable_index;
  88 #endif //PRODUCT
  89   }
  90 
  91   // utility to extract an effective CallInfo from a method and an optional receiver limit
  92   // does not queue the method for compilation.  This also creates a ResolvedMethodName
  93   // object for the resolved_method.
  94   CallInfo(Method* resolved_method, Klass* resolved_klass, TRAPS);
  95 
  96   Klass*  resolved_klass() const                 { return _resolved_klass; }
  97   Klass*  selected_klass() const                 { return _selected_klass; }
  98   methodHandle resolved_method() const           { return _resolved_method; }
  99   methodHandle selected_method() const           { return _selected_method; }
 100   Handle       resolved_appendix() const         { return _resolved_appendix; }
 101   Handle       resolved_method_type() const      { return _resolved_method_type; }
 102   Handle       resolved_method_name() const      { return _resolved_method_name; }
 103   // Materialize a java.lang.invoke.ResolvedMethodName for this resolved_method
 104   void     set_resolved_method_name(TRAPS);
 105 
 106   BasicType    result_type() const               { return selected_method()->result_type(); }
 107   CallKind     call_kind() const                 { return _call_kind; }
 108   int          call_index() const                { return _call_index; }
 109   int          vtable_index() const {
 110     // Even for interface calls the vtable index could be non-negative.
 111     // See CallInfo::set_interface.
 112     assert(has_vtable_index() || is_statically_bound(), "");
 113     assert(call_kind() == vtable_call || call_kind() == direct_call, "");
 114     // The returned value is < 0 if the call is statically bound.
 115     // But, the returned value may be >= 0 even if the kind is direct_call.
 116     // It is up to the caller to decide which way to go.
 117     return _call_index;
 118   }
 119   int          itable_index() const {
 120     assert(call_kind() == itable_call, "");
 121     // The returned value is always >= 0, a valid itable index.
 122     return _call_index;
 123   }
 124 
 125   // debugging
 126 #ifdef ASSERT
 127   bool         has_vtable_index() const          { return _call_index >= 0 && _call_kind != CallInfo::itable_call; }
 128   bool         is_statically_bound() const       { return _call_index == Method::nonvirtual_vtable_index; }
 129 #endif //ASSERT
 130   void         verify() PRODUCT_RETURN;
 131   void         print()  PRODUCT_RETURN;
 132 };
 133 















































































































 134 
 135 // Condensed information from constant pool to use to resolve the method or field.
 136 //   resolved_klass = specified class (i.e., static receiver class)
 137 //   current_klass  = sending method holder (i.e., class containing the method
 138 //                    containing the call being resolved)
 139 //   current_method = sending method (relevant for field resolution)
 140 class LinkInfo : public StackObj {
 141   Symbol*     _name;            // extracted from JVM_CONSTANT_NameAndType
 142   Symbol*     _signature;
 143   Klass*      _resolved_klass;  // class that the constant pool entry points to
 144   Klass*      _current_klass;   // class that owns the constant pool
 145   methodHandle _current_method;  // sending method
 146   bool        _check_access;
 147   constantTag _tag;
 148 
 149  public:
 150   enum AccessCheck {
 151     needs_access_check,
 152     skip_access_check
 153   };


 190 };
 191 
 192 // Link information for getfield/putfield & getstatic/putstatic bytecodes
 193 // is represented using a fieldDescriptor.
 194 
 195 // The LinkResolver is used to resolve constant-pool references at run-time.
 196 // It does all necessary link-time checks & throws exceptions if necessary.
 197 
 198 class LinkResolver: AllStatic {
 199   friend class klassVtable;
 200   friend class klassItable;
 201 
 202  private:
 203 
 204   static Method* lookup_method_in_klasses(const LinkInfo& link_info,
 205                                           bool checkpolymorphism,
 206                                           bool in_imethod_resolve);
 207   static Method* lookup_method_in_interfaces(const LinkInfo& link_info);
 208 
 209   static methodHandle lookup_polymorphic_method(const LinkInfo& link_info,
 210                                                 Handle *appendix_result_or_null,
 211                                                 Handle *method_type_result, TRAPS);
 212  JVMCI_ONLY(public:) // Needed for CompilerToVM.resolveMethod()
 213   // Not Linktime so doesn't take LinkInfo
 214   static methodHandle lookup_instance_method_in_klasses (Klass* klass, Symbol* name, Symbol* signature,
 215                                                          Klass::PrivateLookupMode private_mode, TRAPS);
 216  JVMCI_ONLY(private:)
 217 
 218   // Similar loader constraint checking functions that throw
 219   // LinkageError with descriptive message.
 220   static void check_method_loader_constraints(const LinkInfo& link_info,
 221                                               const methodHandle& resolved_method,
 222                                               const char* method_type, TRAPS);
 223   static void check_field_loader_constraints(Symbol* field, Symbol* sig,
 224                                              Klass* current_klass,
 225                                              Klass* sel_klass, TRAPS);
 226 
 227   static methodHandle resolve_interface_method(const LinkInfo& link_info, Bytecodes::Code code, TRAPS);
 228   static methodHandle resolve_method          (const LinkInfo& link_info, Bytecodes::Code code, TRAPS);
 229 
 230   static methodHandle linktime_resolve_static_method    (const LinkInfo& link_info, TRAPS);
 231   static methodHandle linktime_resolve_special_method   (const LinkInfo& link_info, TRAPS);


 298                                    Bytecodes::Code byte, TRAPS);
 299   static void resolve_field(fieldDescriptor& result, const LinkInfo& link_info,
 300                             Bytecodes::Code access_kind,
 301                             bool initialize_class, TRAPS);
 302 
 303   static void resolve_static_call   (CallInfo& result,
 304                                      const LinkInfo& link_info,
 305                                      bool initialize_klass, TRAPS);
 306   static void resolve_special_call  (CallInfo& result,
 307                                      Handle recv,
 308                                      const LinkInfo& link_info,
 309                                      TRAPS);
 310   static void resolve_virtual_call  (CallInfo& result, Handle recv, Klass* recv_klass,
 311                                      const LinkInfo& link_info,
 312                                      bool check_null_and_abstract, TRAPS);
 313   static void resolve_interface_call(CallInfo& result, Handle recv, Klass* recv_klass,
 314                                      const LinkInfo& link_info,
 315                                      bool check_null_and_abstract, TRAPS);
 316   static void resolve_handle_call   (CallInfo& result,
 317                                      const LinkInfo& link_info, TRAPS);
 318   static void resolve_dynamic_call  (CallInfo& result, int pool_index, Handle bootstrap_specifier,
 319                                      Symbol* method_name, Symbol* method_signature,
 320                                      Klass* current_klass, TRAPS);
 321 
 322   // same as above for compile-time resolution; but returns null handle instead of throwing
 323   // an exception on error also, does not initialize klass (i.e., no side effects)
 324   static methodHandle resolve_virtual_call_or_null  (Klass* receiver_klass,
 325                                                      const LinkInfo& link_info);
 326   static methodHandle resolve_interface_call_or_null(Klass* receiver_klass,
 327                                                      const LinkInfo& link_info);
 328   static methodHandle resolve_static_call_or_null   (const LinkInfo& link_info);
 329   static methodHandle resolve_special_call_or_null  (const LinkInfo& link_info);
 330 
 331   static int vtable_index_of_interface_method(Klass* klass, const methodHandle& resolved_method);
 332 
 333   // same as above for compile-time resolution; returns vtable_index if current_klass if linked
 334   static int resolve_virtual_vtable_index  (Klass* receiver_klass,
 335                                             const LinkInfo& link_info);
 336 
 337   // static resolving for compiler (does not throw exceptions, returns null handle if unsuccessful)
 338   static methodHandle linktime_resolve_virtual_method_or_null  (const LinkInfo& link_info);
 339   static methodHandle linktime_resolve_interface_method_or_null(const LinkInfo& link_info);
 340 




  38 class CallInfo : public StackObj {
  39  public:
  40   // Ways that a method call might be selected (or not) based on receiver type.
  41   // Note that an invokevirtual instruction might be linked with no_dispatch,
  42   // and an invokeinterface instruction might be linked with any of the three options
  43   enum CallKind {
  44     direct_call,                        // jump into resolved_method (must be concrete)
  45     vtable_call,                        // select recv.klass.method_at_vtable(index)
  46     itable_call,                        // select recv.klass.method_at_itable(resolved_method.holder, index)
  47     unknown_kind = -1
  48   };
  49  private:
  50   Klass*       _resolved_klass;         // static receiver klass, resolved from a symbolic reference
  51   Klass*       _selected_klass;         // dynamic receiver class (same as static, or subklass)
  52   methodHandle _resolved_method;        // static target method
  53   methodHandle _selected_method;        // dynamic (actual) target method
  54   CallKind     _call_kind;              // kind of call (static(=bytecode static/special +
  55                                         //               others inferred), vtable, itable)
  56   int          _call_index;             // vtable or itable index of selected class method (if any)
  57   Handle       _resolved_appendix;      // extra argument in constant pool (if CPCE::has_appendix)
  58   bool         _has_local_sig;          // use signature from call site, which differs from that of the method itself
  59   Handle       _resolved_method_name;   // Object holding the ResolvedMethodName
  60 
  61   void set_static(Klass* resolved_klass, const methodHandle& resolved_method, TRAPS);
  62   void set_interface(Klass* resolved_klass, Klass* selected_klass,
  63                      const methodHandle& resolved_method,
  64                      const methodHandle& selected_method,
  65                      int itable_index, TRAPS);
  66   void set_virtual(Klass* resolved_klass, Klass* selected_klass,
  67                    const methodHandle& resolved_method,
  68                    const methodHandle& selected_method,
  69                    int vtable_index, TRAPS);
  70   void set_handle(const methodHandle& resolved_method,
  71                   Handle resolved_appendix, bool has_local_sig, TRAPS);
  72   void set_handle(Klass* resolved_klass,
  73                   const methodHandle& resolved_method,
  74                   Handle resolved_appendix, bool has_local_sig, TRAPS);
  75   void set_common(Klass* resolved_klass, Klass* selected_klass,
  76                   const methodHandle& resolved_method,
  77                   const methodHandle& selected_method,
  78                   CallKind kind,
  79                   int index, TRAPS);
  80 
  81   friend class LinkResolver;
  82   friend class BootstrapInfo;
  83 
  84  public:
  85   CallInfo() {
  86 #ifndef PRODUCT
  87     _call_kind  = CallInfo::unknown_kind;
  88     _call_index = Method::garbage_vtable_index;
  89 #endif //PRODUCT
  90   }
  91 
  92   // utility to extract an effective CallInfo from a method and an optional receiver limit
  93   // does not queue the method for compilation.  This also creates a ResolvedMethodName
  94   // object for the resolved_method.
  95   CallInfo(Method* resolved_method, Klass* resolved_klass, TRAPS);
  96 
  97   Klass*  resolved_klass() const                 { return _resolved_klass; }
  98   Klass*  selected_klass() const                 { return _selected_klass; }
  99   methodHandle resolved_method() const           { return _resolved_method; }
 100   methodHandle selected_method() const           { return _selected_method; }
 101   Handle       resolved_appendix() const         { return _resolved_appendix; }
 102   bool         has_local_signature() const       { return _has_local_sig; }
 103   Handle       resolved_method_name() const      { return _resolved_method_name; }
 104   // Materialize a java.lang.invoke.ResolvedMethodName for this resolved_method
 105   void     set_resolved_method_name(TRAPS);
 106 
 107   BasicType    result_type() const               { return selected_method()->result_type(); }
 108   CallKind     call_kind() const                 { return _call_kind; }
 109   int          call_index() const                { return _call_index; }
 110   int          vtable_index() const {
 111     // Even for interface calls the vtable index could be non-negative.
 112     // See CallInfo::set_interface.
 113     assert(has_vtable_index() || is_statically_bound(), "");
 114     assert(call_kind() == vtable_call || call_kind() == direct_call, "");
 115     // The returned value is < 0 if the call is statically bound.
 116     // But, the returned value may be >= 0 even if the kind is direct_call.
 117     // It is up to the caller to decide which way to go.
 118     return _call_index;
 119   }
 120   int          itable_index() const {
 121     assert(call_kind() == itable_call, "");
 122     // The returned value is always >= 0, a valid itable index.
 123     return _call_index;
 124   }
 125 
 126   // debugging
 127 #ifdef ASSERT
 128   bool         has_vtable_index() const          { return _call_index >= 0 && _call_kind != CallInfo::itable_call; }
 129   bool         is_statically_bound() const       { return _call_index == Method::nonvirtual_vtable_index; }
 130 #endif //ASSERT
 131   void         verify() PRODUCT_RETURN;
 132   void         print()  PRODUCT_RETURN;
 133 };
 134 
 135 // Condensed information from constant pool to use to invoke a bootstrap method.
 136 class BootstrapInfo : public StackObj {
 137   constantPoolHandle _pool;     // constant pool containing the bootstrap specifier
 138   const int   _bss_index;       // index of bootstrap specifier in CP (condy or indy)
 139   const int   _indy_index;      // internal index of indy call site, or -1 if a condy call
 140   const bool  _is_method_call;  // are we resolving a method (indy) or a value (condy)?
 141   const int   _argc;            // number of static arguments
 142   Symbol*     _name;            // extracted from JVM_CONSTANT_NameAndType
 143   Symbol*     _signature;
 144 
 145   // pre-bootstrap resolution state:
 146   Handle      _bsm;             // resolved bootstrap method
 147   Handle      _name_arg;        // resolved String
 148   Handle      _type_arg;        // resolved Class or MethodType
 149   typeArrayHandle _arg_indexes; // int[] array of static arguments, as CP indexes
 150   objArrayHandle  _arg_values;  // Object[] array of static arguments; null for unresolved
 151 
 152   // post-bootstrap resolution state:
 153   bool        _is_resolved;     // set true when any of the next fields are set
 154   Handle      _resolved_value;  // bind this as condy constant
 155   methodHandle _resolved_method; // bind this as indy behavior
 156   Handle      _resolved_appendix; // extra opaque static argument for _resolved_method
 157 
 158   int nat_ref_index() const { return _pool->bootstrap_name_and_type_ref_index_at(_bss_index); }
 159 
 160  public:
 161   BootstrapInfo(const constantPoolHandle& pool, int bss_index, int indy_index = 0);
 162 
 163   // accessors
 164   const constantPoolHandle& pool() const{ return _pool; }
 165   int bss_index() const                 { return _bss_index; }
 166   int indy_index() const                { return _indy_index; }
 167   int argc() const                      { return _argc; }
 168   bool is_method_call() const           { return _is_method_call; }
 169   Symbol* name() const                  { return _name; }
 170   Symbol* signature() const             { return _signature; }
 171 
 172   // accessors to lazy state
 173   Handle bsm() const                    { return _bsm; }
 174   Handle name_arg() const               { return _name_arg; }
 175   Handle type_arg() const               { return _type_arg; }
 176   typeArrayHandle arg_indexes() const   { return _arg_indexes; }
 177   objArrayHandle arg_values() const     { return _arg_values; }
 178   bool is_resolved() const              { return _is_resolved; }
 179   Handle resolved_value() const         { assert(!is_method_call(), ""); return _resolved_value; }
 180   methodHandle resolved_method() const  { assert(is_method_call(), "");  return _resolved_method; }
 181   Handle resolved_appendix() const      { assert(is_method_call(), "");  return _resolved_appendix; }
 182 
 183   // derived accessors
 184   InstanceKlass* caller() const         { return _pool->pool_holder(); }
 185   oop caller_mirror() const             { return caller()->java_mirror(); }
 186   int decode_indy_index() const         { return ConstantPool::decode_invokedynamic_index(_indy_index); }
 187   int name_index() const                { return _pool->name_ref_index_at(nat_ref_index()); }
 188   int signature_index() const           { return _pool->signature_ref_index_at(nat_ref_index()); }
 189   int bsms_attr_index() const           { return _pool->bootstrap_methods_attribute_index(_bss_index); }
 190   int bsm_index() const                 { return _pool->bootstrap_method_ref_index_at(_bss_index); }
 191   //int argc() is eagerly cached in _argc
 192   int arg_index(int i) const            { return _pool->bootstrap_argument_index_at(_bss_index, i); }
 193   oop arg_value(int i) const;        // pull oop from _arg_values, safely, NULL if not present
 194 
 195   enum BSMMode { _unknown, _metadata, _bsci, _expression };
 196   BSMMode bsm_mode() const;
 197 
 198   // CP cache entry for call site (indy only)
 199   ConstantPoolCacheEntry* invokedynamic_cp_cache_entry() const {
 200     assert(is_method_call(), "");
 201     return _pool->invokedynamic_cp_cache_entry_at(_indy_index);
 202   }
 203 
 204   // If there is evidence this call site was already linked, set the
 205   // existing linkage data into result, or throw previouos exception.
 206   // Return true if either action is taken, else false.
 207   bool resolve_previously_linked_invokedynamic(CallInfo& result, TRAPS);
 208   bool save_and_throw_indy_exc(TRAPS);
 209   void resolve_newly_linked_invokedynamic(CallInfo& result, TRAPS);
 210 
 211   // argument location and resolution
 212   // Null returns from these are real, actual null condy constants.
 213   // They never produce Universe::the_null_sentinel.
 214   oop find_arg_oop(int i, Handle if_not_present, TRAPS) {
 215     // Don't pass if_not_present as null unless you are OK with confusing
 216     // "not present" with "present but null".
 217     bool found_it = false;
 218     oop result = _pool->find_cached_constant_at(arg_index(i), found_it, THREAD);
 219     return (found_it ? result : if_not_present());  // OK to execute during exception
 220   }
 221   oop resolve_arg_oop(int i, TRAPS) {
 222     return _pool->resolve_possibly_cached_constant_at(arg_index(i), THREAD);
 223   }
 224 
 225   // pre-bootstrap resolution actions:
 226   Handle resolve_bsm(TRAPS);   // lazily compute _bsm and return it
 227   void resolve_metadata(TRAPS);   // lazily compute _name/_type
 228   void resolve_args(ConstantPool::BootstrapArgumentReferenceMode resolving, TRAPS);  // compute arguments
 229 
 230   // setters for post-bootstrap results:
 231   void set_resolved_value(Handle value) {
 232     assert(!is_resolved() && !is_method_call(), "");
 233     _is_resolved = true;
 234     _resolved_value = value;
 235   }
 236   void set_resolved_method(methodHandle method, Handle appendix) {
 237     assert(!is_resolved() && is_method_call(), "");
 238     _is_resolved = true;
 239     _resolved_method = method;
 240     _resolved_appendix = appendix;
 241   }
 242 
 243   void print() { print_msg_on(tty); }
 244   void print_msg_on(outputStream* st, const char* msg = NULL);
 245 };
 246 
 247 // Condensed information from constant pool to use to resolve the method or field.
 248 //   resolved_klass = specified class (i.e., static receiver class)
 249 //   current_klass  = sending method holder (i.e., class containing the method
 250 //                    containing the call being resolved)
 251 //   current_method = sending method (relevant for field resolution)
 252 class LinkInfo : public StackObj {
 253   Symbol*     _name;            // extracted from JVM_CONSTANT_NameAndType
 254   Symbol*     _signature;
 255   Klass*      _resolved_klass;  // class that the constant pool entry points to
 256   Klass*      _current_klass;   // class that owns the constant pool
 257   methodHandle _current_method;  // sending method
 258   bool        _check_access;
 259   constantTag _tag;
 260 
 261  public:
 262   enum AccessCheck {
 263     needs_access_check,
 264     skip_access_check
 265   };


 302 };
 303 
 304 // Link information for getfield/putfield & getstatic/putstatic bytecodes
 305 // is represented using a fieldDescriptor.
 306 
 307 // The LinkResolver is used to resolve constant-pool references at run-time.
 308 // It does all necessary link-time checks & throws exceptions if necessary.
 309 
 310 class LinkResolver: AllStatic {
 311   friend class klassVtable;
 312   friend class klassItable;
 313 
 314  private:
 315 
 316   static Method* lookup_method_in_klasses(const LinkInfo& link_info,
 317                                           bool checkpolymorphism,
 318                                           bool in_imethod_resolve);
 319   static Method* lookup_method_in_interfaces(const LinkInfo& link_info);
 320 
 321   static methodHandle lookup_polymorphic_method(const LinkInfo& link_info,
 322                                                 Handle *appendix_result_or_null, TRAPS);

 323  JVMCI_ONLY(public:) // Needed for CompilerToVM.resolveMethod()
 324   // Not Linktime so doesn't take LinkInfo
 325   static methodHandle lookup_instance_method_in_klasses (Klass* klass, Symbol* name, Symbol* signature,
 326                                                          Klass::PrivateLookupMode private_mode, TRAPS);
 327  JVMCI_ONLY(private:)
 328 
 329   // Similar loader constraint checking functions that throw
 330   // LinkageError with descriptive message.
 331   static void check_method_loader_constraints(const LinkInfo& link_info,
 332                                               const methodHandle& resolved_method,
 333                                               const char* method_type, TRAPS);
 334   static void check_field_loader_constraints(Symbol* field, Symbol* sig,
 335                                              Klass* current_klass,
 336                                              Klass* sel_klass, TRAPS);
 337 
 338   static methodHandle resolve_interface_method(const LinkInfo& link_info, Bytecodes::Code code, TRAPS);
 339   static methodHandle resolve_method          (const LinkInfo& link_info, Bytecodes::Code code, TRAPS);
 340 
 341   static methodHandle linktime_resolve_static_method    (const LinkInfo& link_info, TRAPS);
 342   static methodHandle linktime_resolve_special_method   (const LinkInfo& link_info, TRAPS);


 409                                    Bytecodes::Code byte, TRAPS);
 410   static void resolve_field(fieldDescriptor& result, const LinkInfo& link_info,
 411                             Bytecodes::Code access_kind,
 412                             bool initialize_class, TRAPS);
 413 
 414   static void resolve_static_call   (CallInfo& result,
 415                                      const LinkInfo& link_info,
 416                                      bool initialize_klass, TRAPS);
 417   static void resolve_special_call  (CallInfo& result,
 418                                      Handle recv,
 419                                      const LinkInfo& link_info,
 420                                      TRAPS);
 421   static void resolve_virtual_call  (CallInfo& result, Handle recv, Klass* recv_klass,
 422                                      const LinkInfo& link_info,
 423                                      bool check_null_and_abstract, TRAPS);
 424   static void resolve_interface_call(CallInfo& result, Handle recv, Klass* recv_klass,
 425                                      const LinkInfo& link_info,
 426                                      bool check_null_and_abstract, TRAPS);
 427   static void resolve_handle_call   (CallInfo& result,
 428                                      const LinkInfo& link_info, TRAPS);
 429   static void resolve_dynamic_call  (CallInfo& result,
 430                                      BootstrapInfo& bootstrap_specifier, TRAPS);

 431 
 432   // same as above for compile-time resolution; but returns null handle instead of throwing
 433   // an exception on error also, does not initialize klass (i.e., no side effects)
 434   static methodHandle resolve_virtual_call_or_null  (Klass* receiver_klass,
 435                                                      const LinkInfo& link_info);
 436   static methodHandle resolve_interface_call_or_null(Klass* receiver_klass,
 437                                                      const LinkInfo& link_info);
 438   static methodHandle resolve_static_call_or_null   (const LinkInfo& link_info);
 439   static methodHandle resolve_special_call_or_null  (const LinkInfo& link_info);
 440 
 441   static int vtable_index_of_interface_method(Klass* klass, const methodHandle& resolved_method);
 442 
 443   // same as above for compile-time resolution; returns vtable_index if current_klass if linked
 444   static int resolve_virtual_vtable_index  (Klass* receiver_klass,
 445                                             const LinkInfo& link_info);
 446 
 447   // static resolving for compiler (does not throw exceptions, returns null handle if unsuccessful)
 448   static methodHandle linktime_resolve_virtual_method_or_null  (const LinkInfo& link_info);
 449   static methodHandle linktime_resolve_interface_method_or_null(const LinkInfo& link_info);
 450 


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